CN100595560C

CN100595560C - Portable classification screen and its application method

Info

Publication number: CN100595560C
Application number: CN200610089264A
Authority: CN
Inventors: 李胜利; 杨敦启; 杨光; 郑博文
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-14
Filing date: 2006-08-14
Publication date: 2010-03-24
Anticipated expiration: 2026-08-14
Also published as: CN1904585A

Abstract

The invention provides a portable grading screen that includes screen body containing different specification screen nets. The feature is that: it has back taper bench structure on each layer of screen body, and the screen bodies are inter-tabling by the neighbor surfaces. It also supplies the amplification method of the grading screen. It has the advantages of reasonable structure, stable workingstability, high reliability of the test result and portability.

Description

Portable classification screen and application process thereof

Technical field

The present invention relates to the feed stripped analysis and detecting instrument, especially relate to a kind of quantitative test the domestic animal particularly portable classification screen of the distribution of particles of its roughage of milk cow and total mixed ration and application process of this classifying screen of being used for, with the production and processing quality of control roughage, ensiling, total mixed ration.

Background technology

In recent years, the industry that the milk industry is encouraged and supported as state key, the development of milk industry not only becomes the emphasis of agricultural restructuring and the bright spot that increasing peasant income are got rich, and is to improve resident's diet structure, improve the physique of the entire people and a vital measure of commonwealth quality.

Yet the present situation of China raising dairy cattle industry but allows of no optimist, the one, raising scale is little, mainly raises based on the peasant household that disperses, raising scale is the 3-5 head per family, breeding milk cow head number at the scale management proportion more than 20 less than 1/4; The 2nd, the raising scientific and technological level is low, because the raiser is mainly based on peasant household, input in science and technology is not enough, the raising output capacity is low, investment repayment is poor, for example Chinese adult milk cow per unit area yield mean value only is 3200kg calendar year 2001, and countries such as the U.S. and the Israel average per unit area yield of cow of growing up is 8400kg, and Denmark, France, Japan etc. are more than the state average out to 6500kg.Therefore, carry out scientific culture, the output that improves milk cow just becomes current important topic.

The scientific matching milk cow forage will produce significant effects to raising dairy cattle.As the quantization profile of milk cow roughage or total mixed ration granularity size, dry matter intake, function of rumen, the price of deed, production performance, the concrete important indicator of healthy water equality of milk cow will be influenced directly.For a long time, never have effective roughage and total mixed ration granularity check and analysis method in the milk cattle cultivating production, its direct consequence is that milk cow roughage and total mixed ration processing can't realize standardization always, has seriously restricted roughage and total mixed ration giving full play to the milk cow prouctiveness.

At present, a kind of rectangle classifying screen has been invented by Univ Pennsylvania USA, the different sieve nest of mesh that utilizes layering to be provided with, can be according to variable grain degree sorting cow roughage and total mixed ration, and through calculating the value of the granularities at different levels after the sorting, so that the production of control milk cow roughage and total mixed ration.

But this classifying screen has following defective and deficiency:

(1) each layer sieve nest less stable during working motion is often beated, and directly influences the accuracy of determination data, makes the resultant error of hierarchical detection higher; (2) each layer screen frame size is identical, and volume is very big, and inconvenience is carried; (3) import price is very expensive; (4) screen cloth is fixing insecure, fragile.

Summary of the invention

At existing defective of existing classifying screen and deficiency, the object of the present invention is to provide a kind of not only being easy to carry but also can improve each layer sieve nest stability and direct novel classifying screen that improves the ranked data accuracy, reduces the check and analysis resultant error when working motion.

The present invention also aims to provide a kind of application process of above-mentioned classifying screen.

Technical scheme of the present invention is as follows:

A kind of portable classification screen, the distribution of particles that is used for quantitative test milk cow roughage and total mixed ration, comprise several layers of sieve nest with different size screen cloth, it is characterized in that: described each layer sieve nest has the back taper stage body structure that is connected successively, and each sieve nest is by chimeric mutually between the neighbouring end face, the pin-and-hole that the top sieve nest of described classifying screen is provided with handle and can inserts fixed pin, the height of described each layer sieve nest all is less than or equal to the inner chamber height of last layer sieve nest, wherein, second layer sieve nest height is less than or equal to the height of top layer sieve nest inner chamber bottom surface to pin-and-hole bottom, and described pin-and-hole is arranged at top layer sieve nest sieve wall top.

Described back taper stage body structure is back taper round platform, elliptical table or gengon platform shape structure.

The corresponding respectively adaptive concaveconvex structure mutually that is provided with on the neighbouring end face of described sieve nest.

Described concaveconvex structure is annular recess or the annular boss that is provided with along described sieve nest end face outer rim.

Described screen cloth is arranged on the sieve nest bottom face, and the screen cloth outer is bonding by binding and sieve nest bottom face, and the screen cloth arranged outside has pressure ring, and described pressure ring overlays screen cloth on the bottom face of sieve nest.

A kind of application process of aforesaid classifying screen is characterized in that may further comprise the steps: 1) screening: swing aforesaid classifying screen along different directions with certain speed, so that varigrained particle fully sieves and drops down onto in the corresponding sieve nest in the feed sample; 2) classification weighing: the feed sample net weight in the difference weighing sieve nests at different levels; 3) calculate the interior feed sample shared number percent in feed sample gross weight of sieve nests at different levels.

Classifying screen rotates to an angle behind a certain direction of the sieve nest swing some cycles at every turn and swings respective cycle again in the described step 1).

The swing step of described classifying screen is: move back and forth 10 times along a certain direction, then the sieve nest half-twist is moved back and forth 10 times again, more than for once repeating, require to repeat four times.

Described rate travel is greater than 20cm/ second.

Technique effect of the present invention is:

The present invention is by round platform, elliptical table or the polygon stage body structure of the taper each layer sieve nest being arranged to be connected chimeric successively, on the one hand, chimeric mutually by each layer sieve nest, make whole classifying screen when working motion, each layer sieve nest good stability, difficult beating, thus the accuracy of ranked data after the screening guaranteed, and the result that hierarchical detection is analyzed is more true and reliable; On the other hand, behind the screening EO, can easily sieve nests at different levels be taken apart, and sieve nests at different levels are set in the last layer sieve nest successively according to opposite order, so both reduced the space that idle time stage sieve is occupied, be convenient to again transport carry, particularly by being arranged at the pin-and-hole on the sieve nest wall of top, utilize fixed pin will be sleeved on together sieve nest fixations at different levels, not only be easy to carry but also can avoid carrying in the process sieve nests at different levels owing to rocking the hidden danger that sieve nest or screen cloth take place to move and cause damaging mutually in transhipment.

In addition, the present invention also provides a kind of application process of classifying screen, may further comprise the steps: 1) screening: swing above-mentioned classifying screen along different directions with certain speed, so that varigrained particle fully sieves and drops down onto in the corresponding sieve nest in the feed sample; 2) classification weighing: the feed sample net weight in the difference weighing sieve nests at different levels; 3) calculate the interior feed sample shared number percent in feed sample gross weight of sieve nests at different levels.

Because particle becomes mixed and disorderly admixture in the feed, the arrangement of particle does not have rule, therefore adopts different directions swing classifying screen, can to greatest extent each grade particles be sieved respectively to drop down onto in the corresponding sieve nest, make gradation sizing more accurate, improve check and analysis result's authenticity and reliability.

In sum, the present invention has simple and reasonable, good operating stability, testing result reliability height, portable advantage.

Description of drawings

Accompanying drawing 1 is the structural representation of classifying screen of the present invention;

Accompanying drawing 2 is the structural representation of middle part sieve nest;

Motion state synoptic diagram when accompanying drawing 3 is classifying screen screening work.

1-bottom sieve nest, 2-middle part sieve nest, 3-top layer sieve nest, 4-handle, 5-pin-and-hole, 6-boss, 7-groove, 8-screen cloth.

Embodiment

The present invention will be further described below in conjunction with accompanying drawing.

Figure 1 shows that structural representation when classifying screen of the present invention uses.As shown in the figure, classifying screen integral body is the back taper frustum cone structure, also can be other inverted cone-shaped structure, as back taper elliptical table or back taper polyhedral structure.

Classifying screen comprises top layer sieve nest 3, bottom sieve nest 1 and middle part sieve nest 2 in the present embodiment, amounts to 4 layers, and wherein middle part sieve nest 2 comprises 2 grades of sieve nest structures, certainly, also can look actual needs, increases or reduce the quantity of middle part sieve nest 2.Do not have screen cloth in the bottom sieve nest 1, be subjected to its upper strata sieve nest to sieve the feed that falls in order to Sheng.

During work, the feed of band screening is stacked in the top layer sieve nest 3, classifying screen is moved according to the direction and the number of times of specific order along regulation, feed sieves through sieve nests at different levels, the feed of different size particles degree is kept somewhere respectively in corresponding sieve nest, and then collect and weighing sieve nests at different levels in forage volume, and calculate the content of granularity materials at different levels in the feed according to specific account form, instruct the processing of feed with feedback.

The top layer sieve nest 1 sieve wall that is positioned at the classifying screen top is provided with handle 4, so that classifying screen is manipulated and the classifying screen transhipment is easy to carry, top layer sieve nest 1 sieve wall top also is provided with pin-and-hole 5, after classifying screen is finished using, with sieve nests at different levels dismounting and be set in successively in the upper level sieve nest inner chamber, can utilize pin-and-hole 5 mount pins to be loaded on sieve nests at different levels in it with fixing sleeve.

Figure 2 shows that the structural representation of middle part sieve nest.Be respectively arranged with annular boss 6 and groove 7 on the upper and lower end face of middle part sieve nest 2, when the assembling classifying screen, with boss on the upper and lower end face of adjacent two sieve nests 6 and groove 7 mutual chimeric getting final product.Certainly, boss 6 and groove 7 also can be discontinuous ring texture.

Screen cloth 8 is fixedly set on the bottom end face of middle part screen cloth 2, and in order to increase the intensity of screen cloth 8, screen cloth 8 inboards are bonding by binder and sieve nest bottom surface among the present invention, and the outside compresses by pressure ring.

In the sieve nest at different levels of the present invention, the mode that its inside and outside both sides of screen cloth adopt gummed and pressure ring to compress is respectively fixed, and can obviously strengthen combining between screen cloth and the sieve nest like this.Traditional way is: the mode that general independent employing gummed of screen cloth or pressure ring compress is fixed, screen cloth comes unstuck easily in working motion or tears phenomenon, and the present invention is used in combination dual mode, increased the safety coefficient of screen cloth greatly, avoided screen cloth that part or integral body take place to greatest extent and come off and tear phenomenon.

Each figure shown in Figure 3 is the action synoptic diagram of classifying screen when screening.

(a) in, classifying screen is along a certain direction reciprocally swinging some cycles, and one of its every swing is one-period back and forth, and the movement velocity of swing time stage sieve should be greater than 10cm/ second, and in the present embodiment, classifying screen is good along a direction to swing 10 cycles;

(b) in, 90 ℃ of classifying screen rotations, because classifying screen carries out left and right sides reciprocally swinging, its sense of rotation can be unrestricted, adopts (a) middle direction of motion and cycle to swing then;

(c) in, classifying screen rotates 90 ℃ once more, and its direction of motion is identical with (a), according to same periodic oscillations 10 times;

(d) in, classifying screen rotates 90 ℃ once more, and its direction of motion is identical with (b), gets final product for 10 times according to same periodic oscillations, and screening finishes.

Cao Zuo advantage is like this, can to greatest extent the feed granules that mixes all be sieved to drop down onto in the next stage sieve nest, makes that screening is more thorough, improves check and analysis result's accuracy and reliability.

Sieve back dismounting sieve nests at different levels, and the feed sample net weight in the difference weighing sieve nests at different levels, obtain the interior feed sample shared number percent in feed sample gross weight of sieve nests at different levels at last respectively and get final product.

The above is a preferred implementation of the present invention only, should be pointed out that for a person skilled in the art, according to invention essence of the present invention, can also make a lot of modification and improvement, but these modification and improvement all will fall into protection scope of the present invention.

Claims

1. portable classification screen, the distribution of particles that is used for quantitative test milk cow roughage and total mixed ration, comprise several layers of sieve nest with different size screen cloth, it is characterized in that: described each layer sieve nest has the back taper stage body structure that is connected successively, and each sieve nest is by chimeric mutually between the neighbouring end face, the pin-and-hole that the top sieve nest of described classifying screen is provided with handle and can inserts fixed pin, the height of described each layer sieve nest all is less than or equal to the inner chamber height of last layer sieve nest, wherein, second layer sieve nest height is less than or equal to the height of top layer sieve nest inner chamber bottom surface to pin-and-hole bottom, and described pin-and-hole is arranged at top layer sieve nest sieve wall top.

2. a kind of portable classification screen as claimed in claim 1 is characterized in that: described back taper stage body structure is back taper round platform, elliptical table or polygon stage body structure.

3. a kind of portable classification screen as claimed in claim 2 is characterized in that: the corresponding respectively adaptive mutually concaveconvex structure and chimeric mutually by this concaveconvex structure that is provided with on the neighbouring end face of described sieve nest.

4. a kind of portable classification screen as claimed in claim 3 is characterized in that: annular recess or the annular boss of described concaveconvex structure for being provided with along described sieve nest end face outer rim.

5. the application process of classifying screen as claimed in claim 1, it is characterized in that may further comprise the steps: 1) screening: swing classifying screen as claimed in claim 1 along different directions with certain speed, so that varigrained particle fully sieves and drops down onto in the corresponding sieve nest in the feed sample; 2) classification weighing: the feed sample net weight in the difference weighing sieve nests at different levels; 3) calculate the interior feed sample shared number percent in feed sample gross weight of sieve nests at different levels.

6. the application process of classifying screen as claimed in claim 5 is characterized in that: classifying screen rotates to an angle behind a certain direction swing of the sieve nest some cycles at every turn and swings respective cycle again in the described step 1).

7. the application process of classifying screen as claimed in claim 6, it is characterized in that: the swing step of described classifying screen is: moving back and forth 10 times along a certain direction, then the sieve nest half-twist is moved back and forth 10 times again, more than is once to repeat, and requires to repeat four times.

8. the application process of classifying screen as claimed in claim 7 is characterized in that: described rate travel is greater than 20cm/ second.