阅读说明：本技术 一种针片状碎卵石筛分装置及方法 (Needle-shaped broken pebble screening device and method ) 是由 赵家满 刘东洲 高昆勇 *** 纪文雨 于 2020-08-04 设计创作，主要内容包括：一种针片状碎卵石筛分装置及方法属于工程材料试验检测技术领域,具体涉及一种针片状碎卵石筛分装置及方法。本发明提供一种可以避免人为目测筛选而导致检测不准确,并且方便操作,提高筛选效率的针片状碎卵石筛分装置及方法。本发明提供一种针片状碎卵石筛分装置,包括片状筛网、针状筛网、筛壁、筛网支撑,其特征在于：所述筛壁和所述筛网支撑固定连接,所述片状筛网和所述针状筛网可替换式置于所述筛网支撑上,所述片状筛网上设置有筛片通孔,所述针状筛网上设置有筛针通孔。本发明还提供一种针片状碎卵石筛分方法,利用上述的筛分装置。(A needle-shaped broken pebble screening device and a method belong to the technical field of engineering material test detection, and particularly relate to a needle-shaped broken pebble screening device and a method. The invention provides a needle-shaped broken pebble screening device and method which can avoid inaccurate detection caused by manual visual inspection screening, are convenient to operate and improve screening efficiency. The invention provides a needle-shaped broken pebble screening device, which comprises a sheet screen, a needle-shaped screen, a screen wall and a screen support, and is characterized in that: the sieve wall with screen cloth supports fixed connection, the slice screen cloth with but needle screen cloth substitution is arranged in on the screen cloth supports, be provided with sieve piece through-hole on the slice screen cloth, be provided with the sieve needle through-hole on the needle screen cloth. The invention also provides a screening method of the needle-shaped broken pebbles, and the screening device is utilized.)

1. The utility model provides a garrulous cobble screening plant of needle slice, includes slice screen cloth (1), needle screen cloth (2), sieve wall (3), screen cloth support (4), its characterized in that: sieve wall (3) with screen cloth supports (4) fixed connection, slice screen cloth (1) with needle screen cloth (2) but the substitution is arranged in screen cloth supports (4), be provided with sieve piece through-hole (5) on slice screen cloth (1), be provided with sieve needle through-hole (6) on needle screen cloth (2).

2. A needle-shaped crushed pebble screening device as claimed in claim 1, wherein: a placing disc (7) is arranged below the needle-shaped screen (2), and the placing disc (7) and the needle-shaped screen (2) are sequentially placed on the screen support (4).

3. A needle-shaped crushed pebble screening device as claimed in claim 1, wherein: still include sieve lid (8), sieve end tray (9), sieve lid (8) with sieve wall (3) match and can dismantle and arrange in the top of sieve wall (3), sieve end tray (9) with sieve support (4) match and can dismantle and arrange in sieve support (4) below.

4. A needle-shaped crushed pebble screening device as claimed in claim 1, wherein: the sieve needle through hole (6) is of a cubic structure, slag baffles (10) are arranged at the bottoms of the two ends of the sieve needle through hole (6), and arc-shaped grooves (11) are formed in the tops of the two ends of the sieve needle through hole (6).

5. A needle-shaped broken pebble screening device according to claim 4, wherein: the sieve sheet through holes (5) are of inverted trapezoidal cube structures with wide upper parts and narrow lower parts.

6. A screening method of needle-shaped crushed pebbles by using the screening device of any one of claims 1 to 5, characterized in that: the method comprises the following steps:

1) sampling a broken pebble sample, screening a flaky sample, putting the flaky screen (1) into the screen wall (3) and placing the flaky screen on the screen support (4);

2) pouring a sample onto the flaky screen (1), swinging two hands along the hole length direction of the screen through holes (5) until the amount of the sample falling from the screen through holes (5) per minute is less than 1% of the total mass of the sample, wherein the falling sample is a flaky broken pebble sample to be detected;

3) then, needle-shaped samples are sieved, and the needle-shaped screen (2) is placed in the screen wall (3) and on the screen support (4);

4) and pouring the residual sample left on the sheet-shaped screen (1) onto the needle-shaped screen (2), swinging the two hands along the hole length direction of the screen needle through holes (6), stopping when the sample does not fall from the screen needle through holes (6), and taking the residual sample left on the needle-shaped screen (2) as a needle-shaped broken pebble sample to be detected.

7. A needle-shaped crushed pebble screening method as claimed in claim 6, wherein: the steps 1) and 2) are as follows:

1) sampling broken pebble samples, firstly screening flaky samples, putting the flaky screen (1) into the screen wall (3) and placing the flaky screen on the screen support (4), covering the screen cover (8) above the screen wall (3), and placing the screen bottom tray (9) below the screen support (4);

2) pour the sample into on slice screen cloth (1), both hands are followed the hole length direction swing of sieve piece through-hole (5) or along the vertical direction swing from top to bottom, and partial sample passes through sieve piece through-hole (5) drop in sieve end tray (9), follow until the minute the volume of dropping of sieve piece through-hole (5) is less than 1% of the total quality of sample, the sample in sieve end tray (9) is the slice rubble sample of required detection.

8. A needle-shaped crushed pebble screening method as claimed in claim 6, wherein: the steps 3) and 4) are as follows:

3) then, needle-shaped samples are screened, a tray (7) is arranged below the needle-shaped screen (2), the tray (7) and the needle-shaped screen (2) are sequentially placed on the screen support (4), and the screen cover (8) is covered above the screen wall;

4) and pouring the residual sample left on the sheet-shaped screen (1) onto the needle-shaped screen (2), swinging the needle-shaped screen along the hole length direction of the screen needle through holes (6) or the vertical direction by two hands, enabling the needle-shaped sample to keep horizontal in the screening process by the tray (7), enabling part of the sample to fall on the tray (7), stopping when the sample does not fall from the screen needle through holes (6), and enabling the residual sample left on the needle-shaped screen (2) to be the needle-shaped broken pebble sample to be detected.

Technical Field

The invention belongs to the technical field of engineering material test detection, and particularly relates to a needle-shaped broken pebble screening device and a method.

Background

The broken stone and pebble are engineering materials with certain strength after being mixed and hardened with cement, fly ash and other cementing materials, fine aggregate, additives and water, and the broken stone and pebble are used for preparing concrete. However, in the existing detection technology, the broken stones and pebbles are detected by adopting a needle and a sheet gauge, and specifically, a tester visually removes samples which do not belong to the shape of a needle sheet and compares the samples one by one, so that the tester has subjective misjudgment in the test, the detection result is inaccurate, and the test period one by one is long. Therefore, a needle-shaped broken pebble screening device and a method which can avoid inaccurate detection caused by manual visual inspection screening, are convenient to operate and improve screening efficiency are needed at present.

Disclosure of Invention

Aiming at the problems, the invention provides the needle-shaped broken pebble screening device and the method which can avoid inaccurate detection caused by manual visual inspection screening, are convenient to operate and improve screening efficiency.

In order to achieve the above object, the present invention adopts the following technical solutions, and the present invention provides a needle-shaped crushed pebble screening device, which includes a sheet-shaped screen, a needle-shaped screen, a screen wall, and a screen support, and is characterized in that: the sieve wall with screen cloth supports fixed connection, the slice screen cloth with but needle screen cloth substitution is arranged in on the screen cloth supports, be provided with sieve piece through-hole on the slice screen cloth, be provided with the sieve needle through-hole on the needle screen cloth.

Preferably, a placing disc is arranged below the needle-shaped screen, and the placing disc and the needle-shaped screen are sequentially placed on the screen support.

Preferably, the screen cover is matched with the screen wall and detachably arranged above the screen wall, and the screen bottom tray is matched with the screen support and detachably arranged below the screen support.

Preferably, the sieve needle through hole is of a cubic structure, slag baffles are arranged at the bottoms of the two ends of the sieve needle through hole, and arc-shaped grooves are formed in the tops of the two ends of the sieve needle through hole.

Preferably, the sieve sheet through holes are in an inverted trapezoidal cubic structure with a wide upper part and a narrow lower part.

Preferably, the lower hole width of the sieve sheet through hole refers to the corresponding hole width design of a sheet gauge in GB/T14685-.

Preferably, the hole width of the sieve needle through holes is designed according to the corresponding hole width of a sheet gauge in GB/T14685-.

The invention also provides a needle-shaped broken pebble screening method, which utilizes the screening device and comprises the following steps:

1) sampling a broken pebble sample, screening a flaky sample, putting a flaky screen into the screen wall, and placing the flaky screen on the screen support;

2) pouring a sample into the sheet-shaped screen mesh, swinging two hands along the hole length direction of the screen sheet through holes until the falling amount of the sample per minute from the screen sheet through holes is less than 1% of the total mass of the sample, wherein the falling sample is a sheet-shaped broken pebble sample to be detected;

3) then, needle-shaped samples are screened, and the needle-shaped screen is placed in the screen wall and on the screen support;

4) and pouring the residual sample left on the sheet screen into the needle screen, swinging the needle screen through holes by two hands in the hole length direction, stopping when the sample does not drop in the needle screen through holes, and keeping the residual sample on the needle screen as a needle-shaped broken pebble sample needing to be detected.

Preferably, the steps 1) and 2) are:

1) sampling a crushed pebble sample, firstly screening a flaky sample, putting a flaky screen into the screen wall, placing the flaky screen on the screen support, covering the screen cover above the screen wall, and placing the screen bottom tray below the screen support;

2) pour the sample into on the slice screen cloth, both hands are followed the hole length direction swing of sieve piece through-hole or along the swing of vertical direction from top to bottom, partial sample passes through sieve piece through-hole drops in the tray of sieve end, follow until the per minute the volume of dropping of sieve piece through-hole is less than 1% of sample total mass, the sample in the tray of sieve end is the slice garrulous cobble sample of required detection.

Preferably, the steps 3) and 4) are:

3) then, needle-shaped samples are screened, a placing disc is arranged below the needle-shaped screen mesh, the placing disc and the needle-shaped screen mesh are sequentially placed on the screen mesh support, and the screen cover is covered above the screen wall;

4) remaining sample on the slice screen cloth is poured into on the needle screen cloth, both hands are followed the hole length direction of sieve needle through-hole or vertical direction swing about, put the dish and make needle-like sample keep the level in the screening process, some samples drop on putting the dish, wait the sample no longer follow stop when dropping in the sieve needle through-hole, the surplus is left sample for the needle-like broken pebble sample of required detection on the needle screen cloth.

The invention has the beneficial effects.

According to the invention, through the arrangement of the screen wall, the screen support, the flaky screen and the needle-shaped screen, a user can select the screen with the corresponding size corresponding to the grain size, and further can easily and quickly screen out needle-shaped and flaky broken pebble samples from test samples, so that the operation is convenient.

Description of the drawings.

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the invention

FIG. 1 is a schematic top view of one design of the present invention, a sheet screen.

Fig. 2 is a schematic top view of a needle screen design of the present invention.

Fig. 3 is an elevational view of a combination of one design feature of the sheet screen of the present invention.

Fig. 4 is an elevational view of a needle screen of the present invention in combination with one design feature.

In the attached drawing, 1 is a sheet screen, 2 is a needle screen, 3 is a screen wall, 4 is a screen support, 5 is a screen sheet through hole, 6 is a screen needle through hole, 7 is a placing disc, 8 is a screen cover, 9 is a screen bottom tray, 10 is a slag baffle, and 11 is an arc-shaped groove.

Detailed Description

The utility model provides a pair of garrulous cobble screening plant of needle slice form, including slice screen cloth 1, needle screen cloth 2, sieve wall 3, the screen cloth supports 4, sieve wall 3 and screen cloth support 4 fixed connection, but slice screen cloth 1 and needle screen cloth 2 substitution are arranged in on screen cloth supports 4, the internal diameter of sieve wall 3 upper aperture slightly is greater than the diameter of slice screen cloth 1 and needle screen cloth 2, the lower part of screen cloth support 4 is unanimous with sieve wall 3 upper aperture, conveniently make up with sieve end tray 9, be provided with sieve piece through-hole 5 on the slice screen cloth 1, be provided with sieve needle through-hole 6 on the needle screen cloth 2.

The number of the sieve sheet through holes 5 of the sheet-shaped screen 1 is manufactured according to nominal size fraction of stones by referring to a table 7.9.3-2 in a JGJ52-2006 (JGJ 52-2006), the sieve sheet through holes 5 are provided with openings in an inverted trapezoidal cubic structure, the lower width of the sieve sheet through holes 5 is referred to 7.6.2.2 table 13 in GB/T14685 plus 2011, the corresponding hole width design of the sheet-shaped gauge in the table 7.9.3-2 in the JGJ52-2006, the upper hole length and the lower hole length of the sieve sheet through holes 5 are consistent, the hole length of the sieve sheet through holes 5 is referred to 7.6.2.2 table 13 in GB/T14685 plus 2011, the upper hole width of the sieve sheet through holes 5 is referred to 7.6.2.2 table 13 in the table 7.9.3-2 in the JGJ52-2006, and the upper hole width and the sieve sheet thickness of the sieve sheet through holes 5 are correspondingly adjusted.

The quantity of the sieve sheet through holes 5 of the needle-shaped screen 2 is referred to (JGJ 52-2006) in a table 7.9.3-2 according to the nominal size grade of the stone, a placing disc 7 with the same size (diameter) as the needle-shaped screen 2 is arranged at the bottom of the needle-shaped screen 2, the placing disc 7 can enable the needle-shaped sample to be kept horizontal when the needle-shaped sample is screened, the needle-shaped sample is prevented from falling vertically to cause quality error of the screened needle-shaped sample, the placing disc 7 and the needle-shaped screen 2 are sequentially placed on a screen support 4, the sieve needle through holes 6 are of a cubic structure, the hole width of the sieve needle through holes 6 is referred to GB/T14685-, the hole length of the sieve needle through holes 6, the thickness of the needle-shaped sieve 2 and the radius and the length of the arc-shaped groove 11 are designed according to the stone particle size in GB/T14685-2011 and JGJ 52-2006.

The sieve lid 8 and the sieve wall 3 are matched and can be detachably arranged above the sieve wall 3, the sieve lid 8 can ensure that the sample does not fall off when vertically shaking up and down, and the sieve bottom tray 9 and the sieve support 4 are matched and can be detachably arranged below the sieve support 4 so as to sieve the flaky sample into the sieve bottom tray 9 for centralized collection.

The needle-shaped broken pebble screening device is utilized to screen needle-shaped broken pebbles, and the method comprises the following steps:

1) sampling a crushed pebble sample, firstly screening a flaky sample, putting a flaky screen 1 into a screen wall 3, placing the flaky screen on a screen support 4, covering a screen cover 8 above the screen wall 3, and placing a screen bottom tray 9 below the screen support 4;

2) pouring a sample onto a sheet-shaped screen mesh 1, swinging two hands along the hole length direction of a screen piece through hole 5 or swinging along the vertical direction, and allowing part of the sample to fall into a screen bottom tray 9 through the screen piece through hole 5 until the falling amount of the sample from the screen piece through hole 5 per minute is less than 1% of the total mass of the sample, wherein the sample in the screen bottom tray 9 is a sheet-shaped crushed pebble sample to be detected;

3) then, needle-shaped samples are screened, a placing disc 7 is arranged below the needle-shaped screen 2, the placing disc 7 and the needle-shaped screen 2 are sequentially placed on the screen support 4, and a screen cover 8 is covered above the screen wall 3;

4) and pouring the residual sample left on the sheet-shaped screen mesh 1 onto the needle-shaped screen mesh 2, swinging two hands along the hole length direction or the vertical direction of the screen needle through holes 6, keeping the needle-shaped sample horizontal in the screening process by the placing disc 7, dropping part of the sample on the placing disc 7, stopping when the sample does not drop from the screen needle through holes 6 any more, and taking the residual sample left on the needle-shaped screen mesh 2 as a needle-shaped broken pebble sample to be detected.

It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.