Seedling cultivating soil classification roller screen

Abstract

The invention discloses a seedling cultivating soil classification roller screen. The seedling cultivating soil classification roller screen is composed of a roller frame, a blocking cover, a rotary roller device and a crushing roll shaft device. The roller frame comprises a bottom frame, a damping device, a front supporting base and a rear supporting base. The blocking cover is composed of a roller blocking cover, a feeding hopper, a blinding discharging port and a subsoil discharging port. The rotary roller device is composed of a roller speed reducer, a small gear, a large gear and a double-layer roller screen body. The crushing roll shaft device is composed of a crushing speed reducer, a small belt wheel, a large belt wheel, a center rotary shaft, a front roll shaft supporting frame, a rear roll shaft supporting frame, vibration roll shafts and elastic stirring rods. According to the seedling cultivating soil classification roller screen, crushing of soil blocks can be achieved through relative rotation of the vibration roll shafts and the double-layer roller screen body. Subsoil and blinding needed for machine-transplanted seedling cultivating can be directly obtained from crushed fine grained soil by means of the double-layer roller screen body, and manpower and material resources are saved. The seedling cultivating soil classification roller screen also has the beneficial effects of being stable in running, simple in structure, convenient to operate and the like.

Description

technical field [0001] The invention relates to a crushing and screening device, in particular to a drum screen for grading seedling raising soil. Background technique [0002] Seedling-raising soil should be prepared as early as possible for machine transplanting. Generally, 100 kilograms of seedling-raising fine soil for fertilization needs to be prepared per mu of field as subsoil, and 25 kilograms of sifted fine soil are used as cover seed soil for subsequent use. It is required that the particle size of seedling-raising fine soil is not greater than 2-5 mm, and the particle size of seedling soil is less than 3 mm. The existing method for preparing the subsoil and the cover soil is to manually crush the soil clods and sieve them. However, manual crushing of soil clods is not only time-consuming and labor-intensive, but also the fine soil particle size after crushing is very uneven, which affects the seedling raising effect. If the humidity of the soil clods is slightly ...

AI Technical Summary

Problems solved by technology

However, manual crushing of soil clods is not only time-consuming and labor-intensive, but also the fine soil particle size after crushing is very uneven, which affects the seedling raising effect. If the humidity of the soil clods is slightly high, the fine soil crushed by hand will still stick during sieving. , blocking sieve and other phenomena; in addition, this method also has the defect that the subsoil and cover soil cannot be prepared at the same time during one sieving

Although fine soil can be prepared by crushing clods with a crusher, the crushed fine soil still needs to be screened many times to obtain subsoil and cover soil, which is obviously time-consuming and laborious, and the efficiency is low

Therefore lack a kind of device that can simultaneously realize crushing and prepare subsoil and cover soil

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