The utility model discloses a particle sieve, which comprises a sieve frame and a filter part with a sieve hole connected to the sieve frame. The sieve frame is formed by bending rectangular sheets, the two ends of which overlap and are connected by spot welding; at least one indentation is arranged along the outer wall of the sieve frame along the middle circle; the outer flange of the upper end of the sieve frame is provided with a semi-circular arc; the diameter of the sieve frame gradually decreases from top to bottom; The edge is bent downward to form a folding edge, and the folding edge is connected with the lower part of the inner wall of the screen frame by spot welding. There is at least one indentation on the outer wall of the screen frame along the middle circle. The indentation is equivalent to the torsion spring and has certain resilience. When the screen frame is extruded, the indentation can buffer the pressure. When the pressure disappears, the indentation is restored, so that the extrusion deformed part of the screen frame is reset, thus increasing the service life of the screen. The folding edge is connected with the lower part of the inner wall of the screen frame by spot welding. In this way, spot welding can be realized by welding machine, which is very fast and more stable than the traditional hammer-smashed connection, saving time and labor.
【技术实现步骤摘要】
一种颗粒分样筛
本技术属于筛子领域,具体涉及一种颗粒分样筛。
技术介绍
现有的工业和食品加工的筛子,有些可以相互插入叠放在一起,但是当叠放的个数比较多的时候,筛框所受到的作用力会非常大,或者其他原因大力挤压筛框时,容易造成筛框变形,变形后不易恢复,使筛子的使用寿命减小。采用金属做的筛子,其筛框与晒面的连接,制作筛框的金属片其中相对两端的连接,大多用人工敲击来连接,这样比较费时费力,生产效率低下,连接的强度也不够大。
技术实现思路
本技术所要解决的技术问题是:针对现有技术存在的不足,提供一种筛框不易变形,且生产效率高的食品加工筛。为实现本技术之目的,采用以下技术方案予以实现:一种颗粒分样筛,包括有筛框和与筛框连接的、设有筛孔的过滤部,所述筛框由矩形片弯折而成,连接的两端部分重叠,并通过点焊连接;所述筛框外壁沿中部一圈至少设有一条压痕;所述筛框上端设有半圆弧的外翻边;所述筛框直径从上往下逐渐变小;所述过滤部边缘向下弯折成型为折边,所述折边与筛框内壁下部点焊连接。作为优选方案之一,所述筛孔直径为1-20mm,相邻筛孔之间的距离为1-30mm。作为优选方案之一,所述筛孔的目数为1-400目。所述折边下端距离筛框下端2-5mm;所述折边还连接有用于加固折边与筛框连接的环边,所述环边上部与折边点焊连接,所述环边下部与筛框内壁下部点焊连接。进一步优化地,所述压痕宽度为2-10mm,压痕深度为1-150mm。进一步优化地,所述筛框和过滤部均采用不锈钢、铜或铁。进一步优化地,所述筛框表面光滑。进一步优化地,所述筛框上端内径为10-600cm。与现有技术相比较,本技术的有益效果是 ...
【技术保护点】
1.一种颗粒分样筛,包括有筛框和与筛框连接的、设有筛孔的过滤部,其特征在于:所述筛框由矩形片弯折而成,连接的两端部分重叠,并通过点焊连接;所述筛框上端设有半圆弧的外翻边;所述筛框直径从上往下逐渐变小;所述过滤部边缘向下弯折成型为折边,所述折边与筛框内壁下部点焊连接;所述筛框外壁沿中部一圈至少设有一条压痕。
【技术特征摘要】
1.一种颗粒分样筛,包括有筛框和与筛框连接的、设有筛孔的过滤部,其特征在于:所述筛框由矩形片弯折而成,连接的两端部分重叠,并通过点焊连接;所述筛框上端设有半圆弧的外翻边;所述筛框直径从上往下逐渐变小;所述过滤部边缘向下弯折成型为折边,所述折边与筛框内壁下部点焊连接;所述筛框外壁沿中部一圈至少设有一条压痕。2.根据权利要求1所述的一种颗粒分样筛,其特征在于:所述筛孔直径为1-20mm,相邻筛孔之间的距离为1-30mm。3.根据权利要求1所述的一种颗粒分样筛,其特征在于:所述筛孔的目数为1-400目。4.根据权利要求3所述的...
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