JPH02265415A - Culture medium raking-out device - Google Patents

Abstract

PURPOSE:To obtain a culture medium raking-out device capable of scraping off all culture medium in a culture bottle while preventing rotation of culture medium by providing two raking-out blades capable of rotating in the opposite direction while differentiating rotating area. CONSTITUTION:When a culture medium 20 in a culturing bottle 21 is raked out using the above-mentioned culture medium raking-out device, a raking-out blade 1 inserting from the mouth of bottle kept in inverted state is moved upward while scraping the culture medium 20 by rotating the raking-out blade 1. In the bottle 21 kept in the inverted state, since blades 1 and 2 are rotated while differentiating rotating region and rotating mutually in the opposite state, most of culture medium 20 is scraped off by the blade 1 and culture medium 20 leaving near the wall face of the bottle can be also scraped off. Rotation of the culture medium 1 can be prevented by the blade 2 rotating in the direction opposite to the blade 1 even when the culture medium 20 is contracted and rotated with the blade 1 and the culture medium 20 can be scraped off without lowering scraping-off rate of the culture medium.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a culture medium scraper, and more particularly to a culture medium scraper for scraping out a culture medium in a bottle for cultivating mushrooms or the like.

(Prior Art) In the artificial cultivation of mushrooms, etc., wide-mouthed bottles are commonly used, and after the mushrooms, etc. are harvested, the culture medium inside the bottle is scraped out to reuse the bottle. At this time, since the medium is densely infested with hyphae, the medium is extremely hard, and a medium scraper is usually used.

Such a culture medium scraper is equipped with a scraping blade at the upper end of the rotating shaft, and the scraping blade inserted through the inverted bottle mouth is rotated to scrape off the culture medium and scrape it out of the bottle. It is something.

However, even though it is a wide-mouthed bottle, since there is a constriction part, the scraping blade cannot reach the culture medium near the wall of the bottle and it tends to remain inside the bottle, which requires manual scraping.

In order to eliminate such drawbacks of conventional culture medium scraping machines, Japanese Patent Publication No. 57-9323 and Japanese Patent Application Laid-Open No. 60-248114 disclose a driving device using an approximately O-shaped arm having a scraping blade at the tip. A culture medium scraper has been proposed which is attached eccentrically to the rotating shaft of the medium and biased by a biasing member.

(Problems to be Solved by the Invention) According to the culture medium scraper described in the above publication, the scraping blade swings during rotation and reaches the culture medium near the bottle wall, so that the scraping blade does not move inside the cultivation bottle. It is possible to scrape off all of the medium.

However, even when such a culture medium scraper is used, when the culture medium is dried, the culture medium may shrink and a gap may be created between the culture medium and the wall surface of the bottle. In such a case, the culture medium rotates together with the rotating scraping blade, and the speed at which the culture medium is scraped off is significantly reduced. In particular, if rotation of the culture medium occurs during scraping of the culture medium, the culture medium cannot be scraped off.

Regarding such cultivation bottles, since it is necessary to scrape off the culture medium manually, the existence of a cultivation bottle in which the culture medium rotates together with the scraping blade is one of the causes of deteriorating the workability of the culture medium scraping operation.

By the way, recently, in order to improve the efficiency of culture medium scraping work, multiple culture medium scrapers have been installed on a machine stand to scrape out the culture medium from multiple cultivation bottles at the same time. In some cases, if there is a cultivation bottle in which the culture medium rotates together with a scraping blade, the culture medium cannot be scraped from other cultivation bottles, which further deteriorates the workability of medium scraping.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a culture medium scraper with good workability that can scrape off all the culture medium inside the cultivation bottle while preventing the rotation of the culture medium, even in a cultivation bottle where the culture medium rotates together with the scraping blade. It's about doing.

(Means for Solving the Problems) In order to achieve the above object, the present inventor has proposed that the culture medium rotating together with the scraping blade be prevented from rotating by the scraping blade rotating in a direction opposite to the rotational direction of the scraping blade. As a result of intensive study and thinking that it might be effective to scrape it off, we arrived at the present invention.

That is, the present invention provides a culture medium scraping machine that scrapes out the culture medium while rotating a scraping blade inserted from the mouth of a bottle for cultivating mushrooms, etc., in which at least two scraping blades each have different rotation areas. at least one of the two scraping blades, the rotating shaft of the scraping blade closest to the bottle wall of the cultivation bottle is biased toward the center of rotation by a biasing member; The culture medium scraper is characterized in that the rotating shaft is provided so as to be able to rotate and swing outward with respect to the center of rotation against the biasing force of the biasing member.

(Function) According to the present invention, the medium can be scraped off while preventing rotation of the medium by using two scraping blades that are rotatably provided in mutually opposite directions with different rotation areas.

Moreover, since the scraping blade installed at the position closest to the wall of the cultivation bottle rotates and swings outward with respect to the center of rotation, it is possible to scrape off all the medium near the wall of the cultivation bottle. can.

(Implementation IIA) The present invention will be explained in more detail using the drawings.

FIG. 1 is an explanatory diagram showing an embodiment of the present invention, in which a scraping blade 1 is provided at the upper end of a rotating shaft 5, a cutting portion 15 is provided on a horizontal portion of the upper surface, and a cutting portion 15 is provided at the tip of the horizontal portion. It is processed smoothly so that it has a rounded appearance.

The rotating shaft 5 on which the scraping blade 1 is provided is attached to a fixed rotating shaft 13 by a pin 11 and is biased by a spring 3.

Such a rotating shaft 5 is maintained in a substantially vertical state when the fixed rotating shaft 13 is stationary due to the urging force of the spring 3, and resists the urging force of the spring 3 when the fixed rotating shaft 13 rotates. As a result, the scraping blade 1 provided at the upper end of the rotating shaft 5 rotates and swings outward (in the direction of arrow A) with respect to the center of rotation.

Further, the scraping blade 2 is provided at the upper end of the rotating shaft 6 and at a position below the scraping blade 1, and a cutting portion 16 is provided at the tip of the horizontal portion.

The rotating shaft 6 on which the scraping blade 2 is provided is attached to a fixed rotating shaft 14 by a pin 12 and biased by a spring 4, and the lower part of the fixed rotating shaft 14 is a cylindrical rotating body. It is screwed onto the side of 7.

Note that a fixed rotation shaft 111+13 is inserted into an inner cylinder provided near the center of the cylindrical rotating body 7, and a bearing 22 is provided between the fixed rotating shaft 13 and the inner wall surface of the cylindrical rotating body 7. There is.

When the fixed rotation shaft 14 is stationary, such a rotation shaft 6 is maintained in a substantially vertical layer, and when the fixed rotation shaft 14 rotates, it resists the biasing force of the spring 4 and rotates around the bottle 12. To f! To move the blade 2, the scraping blade 2 provided at the upper end of the rotating shaft 6 rotates and swings outward (in the direction of arrow B) with respect to the center of rotation.

The fixed rotating shaft 13 and the cylindrical rotating body 7 are each provided with a pulley 8.9 at their lower end, and are driven by a motor (not shown) in the directions of arrows C and D, that is, in mutually opposite directions. rotated by a belt.

For this reason, the scraping blades 1.2 rotate outward (
It can swing in the directions of arrows A and B).

This swing angle can be arbitrarily adjusted by adjusting the biasing force of the spring 3.4.

The culture medium scraper of this embodiment is fixed to a machine base 10, and moves up and down as the machine base 10 moves in the vertical direction (direction of arrow E).

In addition, the motor that drives the belt that rotates the pulleys 8 and 9 may be one white, and this motor may be installed in the machine base 10 so that the motor also moves up and down together with the machine base 10. In this case, the belt By using one side of the belt as an open belt and the other as a cross belt that loops in a figure 8 shape, even if there is only one motor, the pulley 8.9
can be rotated in opposite directions.

The rotating shaft 5.6 and fixed rotating shaft 13.14 of this culture medium scraper
The connecting portion with the 1st part will be explained with reference to FIG. 2.

Figure 2 (a) shows the fixing 11 seen from the direction of arrow F in Figure 1.
% 116 and the fixed rotating shaft 14, as shown in Figure 2 (
b) is the connecting portion seen from the direction of arrow G in FIG. 2(a).

In FIG. 2, the rotating shaft 6 and the fixed rotating shaft 14 are mounted on the bottle 12 and engaged in a convex-concave manner, and the rotating shaft 6 is held in the direction of the center of rotation by the spring 4, that is, in a substantially vertical layer. energized.

Furthermore, the rotation shaft 6 is attached to the upper end of the fixed rotation shaft 14 by a spring 4.
A stopper 25 is provided to prevent the substantially vertical layer from collapsing toward the center of rotation due to the urging force.

In this embodiment, the connecting portion between the rotating shaft 5 and the fixed rotating shaft 13 has the same structure as the connecting portion between the rotating shaft 6 and the fixed rotating shaft 14 shown in FIG.

When scraping out the culture medium from a cultivation bottle using the culture medium scraping machine according to this embodiment, first, the scraping blade 1 inserted through the inverted bottle mouth is rotated to scrape off the culture medium and move upward. The scraping blade 1.2 is moved, and then when the scraping blade 2 does not reach the culture medium, the scraping blade 2 is rotated to scrape off the culture medium.
The fixed rotating shafts 13 and 14 that rotate the two have substantially the same number of rotations.

When the cultivation bottle is in an inverted state, the scraping blades 1.2 rotate and swing in opposite directions with different rotation areas, so that most of the culture medium is removed by the scraping blades 1, as shown in FIG. The scraped-off culture medium remaining near the MK wall surface is also scraped off by the scraping blade 2.

Furthermore, even when the culture medium contracts and rotates together with the scraping blade 1, the scraping blade 2 rotates in the opposite direction to the scraping blade 1.
Rotation of the medium can be prevented by this, and the medium can be scraped off without reducing the cutting speed of the medium.

In the culture medium scraper of this embodiment, the scraping blade 2 is provided at a position lower than the scraping blade 1 in order to avoid contact with the scraping blade 1.2. The medium often rotates together with the scraping blade after the medium scraping has progressed to a certain extent, and in this case, both scraping blades 1 and 2 have already reached the medium, causing rotation of the medium. The medium can be scraped out without any damage.

For example, even if the rotation of the culture medium occurs by the scraping blade 1 before the scraping blade 2 reaches the culture medium, the speed at which the scraping blade 1 breaks down the medium until the scraping blade 2 reaches the culture medium is lower, but the scraping blade 2
After reaching the medium, the medium can be scraped off at normal chipping speed.

In this embodiment, the scraping blades 1 and 2 both rotate and swing, but the scraping blade 1 rotates without swinging without scraping off the vicinity of the center of the medium of the cultivation bottle, that is, the rotation axis 5
and the fixed rotating shaft 13 may be integrally connected so that the rotating shaft 5 rotates without swinging, and the scraping blade 1.
As long as they do not come into contact with each other during rotation, they may be provided so that they are located on the same plane when they are at rest.

Also, although the start of rotation of the scraping blade 2 is delayed from the start of rotation of the scraping blade l, both may be rotated at the same time.
Furthermore, if the scraping blades 1 and 2 do not come into contact with each other during rotation, the rotational speed may be differentiated in order to adjust the swing angle of the scraping blades 1 and 2.

In this embodiment, the rotation of the fixed rotating shafts 13 and 14 is driven by a belt, but it may be driven by a gear drive or a chain drive, and the scraping blade 1.2 may be any conventionally used one. It can be used for.

A plurality of the culture medium scraping machines of the present embodiment described above are provided on the machine stand 10, and the culture medium of a plurality of cultivation bottles can be scraped out at the same time.

At that time, it is possible to eliminate the concern that the culture medium rotates with the scraping blade and the scraping speed becomes extremely slow, and the efficiency of the culture medium scraping work can be significantly improved (effects of the invention). According to the extractor, even when the culture medium rotates together with the scraping blade in the cultivation bottle, it is possible to scrape out while preventing the rotation of the culture medium.

Therefore, when a plurality of culture medium scrapers are installed on a machine, even when scraping the culture medium from a plurality of cultivation bottles at the same time, the culture medium scraping operation can be performed without worrying about occurrence of rotation of the culture medium.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram illustrating an embodiment of the present invention, FIG. 2 is a side view of the connecting portion between the rotating shaft 6 and the residential rotating shaft 14 shown in FIG. 1, and FIG. 3 is the same as that shown in FIG. 1. Explanatory diagrams illustrating the scraping state of the culture medium scraper shown in FIG. In the figure, 1.2... scraping blade, 3.4... spring, 5.6...
Rotating shaft, 11.12... Bottle, 13.14... Fixed rotating shaft, 20... Culture medium, 21... Cultivation bottle, A, B... Rocking direction of scraping blade 1.2, X , Y... Rotation direction of scraping blade 1.2. drawing chart

Claims (1)

[Claims] In a culture medium scraping machine that scrapes out the culture medium while rotating a scraping blade inserted from the mouth of a cultivation bottle for mushrooms, etc., at least two scraping blades are used as the scraping blades, each rotating in a different rotation area and moving in opposite directions. The rotating shaft of at least one of the two scraping blades that is rotatably provided and closest to the bottle wall of the cultivation bottle is urged toward the center of rotation by a biasing member, and the rotating shaft rotates. What is claimed is: 1. A culture medium scraper characterized in that the device is provided so as to be able to swing outward with respect to a center of rotation against the urging force of an urging member.