JPH0330613A - Apparatus for scraping out culture medium - Google Patents

Abstract

PURPOSE:To surely scrape out a culture medium at a high speed independently of the nature of the medium by introducing an upward-directing vertical rotary screw into a culture medium in a screw-scraping part and scraping out the medium with a rotary scraping blade in a blade-scraping part. CONSTITUTION:Culture bottles 32 in a container are turned upside down together with the container, placed on a transfer conveyor 14 and passed successively through a screw-scraping part 40, a blade-scraping part 50 and a brush cleaning part 60 in the order. In the screw-scraping part, a vertically supported screw 62 directing upward is introduced through the mouth of the culture bottle into the culture medium under rotation and the medium is dug out with the screw and removed from the bottle. A rotating scraping blade 64 is introduced into the culture bottle in the blade-scraping part and the medium attached to the inner wall of the bottle is scraped out with the blade.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a culture medium scraping device used for scraping culture medium from a cultivation bottle.

(Prior Art) In mushroom cultivation using cultivation bottles, there is an operation to remove the medium after the mushrooms have grown from the cultivation bottle, and to scrape out the medium in order to fill the cultivation bottle with new medium. In this work of scraping out the culture medium, a conventional culture medium scraping device with pillars is used as a device for scraping out the culture medium from a plurality of cultivation bottles housed in a container at once. Generally used culture substrate scraping devices support the neck of the cultivation bottle with an iron plate with a hole large enough for the opening of the cultivation bottle to fit in, and hold the cultivation bottle with the opening facing vertically downward. A blade-like scraping blade is rotated and inserted from the mouth of the bottle to scrape out the culture medium stuck inside the cultivation bottle.

(Problems to be Solved by the Invention) However, the conventional scraping device described above has a problem in that it takes about 40 seconds for each container to scrape out the culture medium, and the scraping operation takes time.

In addition, in the conventional method of inserting the scraping blade into the cultivation bottle while rotating, the culture substrate may get stuck in the bottle mouth and cannot be scraped out effectively, or the culture substrate may not be able to be scraped out effectively when the scraping blade rotates. There are cases where both the bases rotate inside the bottle, making it difficult to scrape them out properly. For example, when cultivating shimeji mushrooms, a medium with a relatively high moisture content is used, so when scraping out such a medium, the medium may become dumpling-shaped, making it difficult to scrape out. There were processing problems such as the fact that it could not be scraped out cleanly unless it was done twice.

In recent years, mushroom cultivation has become increasingly large-scale, and there is a strong demand for improved work efficiency in the work of scraping out the medium. There is a demand for an efficient scraping device that has a high scraping processing speed.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a medium scraping device that can reliably scrape out regardless of differences in the properties of the culture medium and has a high scraping processing speed. This is what we are trying to provide.

(Means for solving problems) In order to achieve the above object, the present invention has the following features.

A culture medium scraping method in which a cultivation bottle filled with culture substrate is supported with the bottle mouth facing vertically downward, and a scraping member such as a scraping blade is inserted into the cultivation bottle from the bottle mouth to scrape out the culture medium. In the device, a screw is provided vertically upward under each bottle mouth of each cultivation bottle supported with the bottle mouth facing vertically downward, and the screw is rotated around the axis to enter the culture medium in the axial direction. A screw scraping part that scrapes out the culture base by scraping out the culture base, and a screw drawing part that supports the cultivation bottle with the bottle mouth facing vertically downward after the culture base has been scraped out, and also supports the cultivation bottle with the bottle mouth facing vertically downward. The present invention is characterized in that a scraping blade is rotatably provided below, and a scraping blade scraping part is provided for moving the scraping blade into the cultivation bottle while rotating it and scraping out the culture medium adhering to the inner wall of the cultivation bottle.

(Function) In the screw scraping section, the screw supported vertically upward enters the culture medium from the bottle opening of the cultivation bottle while rotating, thereby removing the culture medium as if picking the culture medium. The culture base removed by the screw scraping part is within the screw passage range, and the culture base is scraped out in a cylindrical shape by the screw scraping part.Next, the scraping blade scrape part removes the culture base inside the cultivation bottle while rotating. and scrape out the culture medium that remains attached to the inner wall of the cultivation bottle after being scraped out by the screw scraping part.

(Embodiments) Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is an explanatory diagram showing an embodiment of the culture medium scraping device according to the present invention.

In the figure, reference numeral 10 denotes a frame body of the culture substrate scraping device, and the side shape of the frame body 10 is formed into a substantially rectangular frame shape. The width size of the frame body 10 is the size of one container, and the longitudinal size is large enough to place five containers side by side. Reference numeral 12 denotes a central support frame provided at the center of the upper surface of the frame body 10, and is installed horizontally above the upper frame of the frame body 10.

13 is a vibrator fixed to the central support frame 12. This vibrator applies vibration to the suppression frame, which will be described later.

Reference numeral 14 denotes a conveyor for conveying the cultivation bottle, and is disposed so as to extend around the outer circumferential position between the upper frames of the frame body 10. Reference numeral 16 denotes sprockets provided at the four corners of the frame body 10, and a drive mechanism for rotationally driving the sprockets 16 is linked. Further, a chain 18 is engaged with the sprocket 16, and the chain 18 is connected to both ends of the conveyor 14 in the width direction.

As shown in FIG. 3, the conveyor 14 is constructed by connecting a chain 18 with thin conveyor plates 14a each having a length corresponding to the width of the cultivation bottle and the width of the container. A bottle opening insertion hole 20 having a diameter slightly larger than the outer diameter of the bottle opening of the cultivation bottle is bored in accordance with the position of the opening of the cultivation bottle housed in the container.

Since the container of the embodiment accommodates four cultivation bottles per row, one conveyor plate 14a is provided with four bottle opening insertion holes 20, and one container accommodates four rows of cultivation bottles. 4 conveyor plates per container14
This will require a.

In FIG. 1, 30 is a container placement part, 40 is a screw scraping part, 50 is a scraping blade scraping part, 60 is a brush cleaning part, and 70
is the unloading part of the container.

In the container mounting section 30, the cultivation bottles that had been placed upright in the containers are set on the conveyor 14 with the bottle mouth facing downward. The cultivation bottles 32 are set by inserting each bottle spout into the bottle spout insertion hole 20. With the cultivation bottle 32 placed on the conveyor 14, the neck portion of the cultivation bottle 32 projects downward from the conveyor plate 4a.

Note that a mechanism for inverting the cultivation bottle 32 and the container 34 and placing them on the conveyor 14 will be described later.

The cultivation bottle 32 placed on the conveyor 14 has the screw scraping section 40, scraping blade scraping section 50, and brush cleaning section 60.
The medium is removed by passing through in this order. Since the screw scraping unit 40, scraping blade scraping unit 50, and brush cleaning unit 60 share the same support mechanism and drive mechanism for the operating member,
Hereinafter, each of these parts will be explained in relation to each other.

42 is a suppression frame suspended from the central support frame 12. As shown in the figure, the suppression frame 42 is connected to the brush cleaning section 60 from the bottom of the container located at the screw scraping section 40.
Provided over a range up to the bottom of the container at the location.

The suspension member 44 swingably supports the suppression frame 42 on the central support frame 1112 with a buffer member such as elastic rubber interposed therebetween, and prevents the suppression frame 42 from shifting upward and swings. It is meant to be suspended by allowing things to happen.

Reference numeral 46 denotes a bottle mouth support frame provided at a position facing the above-mentioned suppression frame with the conveyor 14 in between. As shown in FIG. 3, the bottle opening support frame 1146 is provided with a bottle opening fitting part 48 corresponding to the position of the opening of each cultivation bottle set facing downward on the conveyor 14. The bottle spout fitting parts 48 are arranged in rows of four each in accordance with the bottle mouth positions of the cultivation bottles located at the respective positions of the screw scraping part 40, the scraping blade scraping part 50, and the brush cleaning part 60. .

FIG. 4 is an explanatory diagram showing the structure of the bottle mouth fitting part 48 and the state in which the cultivation bottle 32 is set on the conveyor 14,
The state seen from the conveyance direction of the conveyor 14 is shown. The bottle spout fitting part 48 is a member formed in a cylindrical shape, and the upper side that receives the neck of the bottle is made of an elastic material such as rubber, and has a tapered shape that expands in diameter. fixes the metal ring 48b. The inner diameter size of the metal ring 48a matches the inner diameter size of the bottle mouth, and the inner diameter size of the fitting part 48a matches the outer diameter size of the bottle mouth. therefore,
A step is formed at the boundary with the metal ring 48b, and entry of the bottle mouth is regulated by this step.

47 is an L-shaped arm fixed to the side edge of the bottle spout support frame 46, and 52 is an L-shaped arm fixed to the side edge of the bottle spout support frame 46 and the suppression frame 4.
This is an air cylinder that connects the two. The main body of the air cylinder 52 is fixed to the side surface of the suppression frame 42, and the lower end of a drive rod 52a that protrudes in and out of the main body of the air cylinder 52 is fixed to the L-shaped arm 47. As shown in FIG. 3, the suppression frame 42 suspends the bottle opening support frame 46 by four air cylinders 52. The air cylinder 52 can be moved by moving the drive rod 52a in and out.
The bottle opening support frame 46 is moved relatively close to or difficult to press against the suppression frame 42, and the bottom surface of the suppression frame 42 suppresses the top surface of the container 34, and the bottle opening of the cultivation bottle is fitted into the bottle opening fitting part 48 or Pull it away from the bottle mouth fitting part 48. Although the suppressing frame 42 and the bottle opening support frame 46 approach each other or open and open in this way, they are supported by only the hanging member 44 with respect to the main body 10 of the flange 11.

15 is a steady rest plate for the conveyor plate 14a;
The ends of 4a are fixed to the frame body 10 with a gap between them from below. Both ends of the conveyor plate 14a slide and pass through the gap between the upper and lower sides of the steady rest plate 15, so that the conveyor plate 14a is rested and conveyed in the horizontal direction.

In FIG. 1, reference numeral 54 denotes a vertically movable box disposed horizontally below the bottle spout support frame 46. This vertical movement box 54
Similar to the bottle mouth support frame 46, the screw scraping part 40
The brush cleaning section 60 is integrally formed over the range from the brush cleaning section 60 to the brush cleaning section 60. A slide portion 56 is provided at both ends of the vertical movement box 54, and a slide shaft 58 vertically fixed to the frame body 10 is slidably inserted into the slide portion 56. The vertical movement box 54 is linked to a vertical movement drive mechanism such as a motor or a crank mechanism, and moves up and down within a predetermined range.

The vertical movement box 54 includes a screw 62, a scraping blade 64,
A brush 66 is provided. The screw 62 is erected such that its tip is vertically upward and rotatable around an axis in accordance with the position of the bottle opening of the cultivation bottle to be placed in the screw drawing section 40. Since the container accommodates 16 cultivation bottles, 16 screws 62 are provided. It is preferable to use a screw with a large diameter as the screw 62, and in the embodiment, a screw having an outer diameter approximately equal to the inner diameter of the bottle mouth of a cultivation bottle is used.

The vertical movement box 54 below the scraping blade scraping section 50 includes:
A scraping blade 64 having two blades is provided for scraping out the culture medium adhering to the inner wall surface of the cultivation bottle.

The scraping blades 64 are also arranged according to the number of cultivation bottles set on the conveyor 14 in accordance with the bottle mouth positions of the cultivation bottles. 6
A support shaft 4a supports the base of the scraping blade 64, and is supported by the vertical movement box 54 so as to be rotatable around an axis. The scraping blade 64 has two blades whose upper ends are bent into an L shape, and are supported by the support rod 64 with the blade edges facing outward. The cutting edge is biased by a spring 64b or the like in a direction in which the cutting edge approaches the cutting edge.

Further, in the brush cleaning section 60, a brush 66 is similarly arranged in accordance with the arrangement position of the cultivation bottle. brush 6
6 is for removing the culture medium remaining in the cultivation bottle, and has a brush part formed in the shape of a fluff.

It consists of a brush handle 66a that supports the brush portion.

The brush handle 66a is also rotatably supported by the vertical movement box 54 in the same way as the support shaft 64a and the screw 62. The brush cleaning unit 60 uses a brush to clean the inside of the cultivation bottle, and various types such as a brush made of thin wire can be used.

In this way, the screw 62, the support shaft 64a, and the brush handle 66a are rotatably supported by the vertical movement box 54, but as shown in FIG. A pulley 68 is provided, and a belt 72 that circulates in conjunction with the driving machine is passed through the screw scraping section 40, scraping blade scraping section 50, and brush cleaning section 60, and each rotating member is It is arranged to be rotationally driven at a predetermined rotational speed. Note that the screw 62 and scraping blade 64. The brushes 66 are set so that adjacent rows rotate in opposite directions. In addition, blades are provided at the bases of the screw 62 and the scraping blade 64 for discharging the scraped culture medium.

Next, the operation of the above embodiment will be explained.

The cultivation bottle filled with the culture medium is set in the container together with the bottle opening into the bottle opening insertion hole 20 formed in the conveyor 14, and facing downward onto the conveyor 14. The cultivation bottle 32 and the container 34 are placed on the conveyor 14 and conveyed forward, and are stopped when they reach a predetermined position of the screw scraping section 40. At this point, the air cylinder 52 operates,
The lower surface of the suppression frame 42 suppresses the container 34 downward, and the bottle spout support frame 46 rises to fit the bottle spout fitting part 48 into the bottle spout of the cultivation bottle. Since the bottle spout fitting part 48 is formed in a tapered shape with an enlarged inner wall surface at the top, the bottle spout of the cultivation bottle can be easily fitted into the bottle spout fitting part 48. In this way, the cultivation bottle 32 is supported under pressure from above and below by the suppression frame 42 and the bottle mouth support frame 46.

The vertical movement box 54 starts to rise as the bottle mouth support frame 46 rises, and the screw 62 enters the cultivation bottle while being rotationally driven by the belt 72. FIG. 2 shows the vertical movement box 54 raised to the upper position.
As the vertical movement box 54 rises, the culture medium is scraped downward by the rotation of the screw 62.

When the medium is scraped out by the screw 62, only the portion of the cultivation bottle 32 through which the screw 62 passes is scraped out, and the medium remains on the inner peripheral wall portion of the cultivation bottle through which the screw 62 does not pass. Since the screw 62 has an outer diameter about the same as the inner diameter of the bottle mouth, after scraping by the screw 62, the culture base is hollowed out in a shape of a thank-you note about the diameter of the bottle mouth.

When scraping out with this screw 62, the screw 62 pushes the culture medium inside the cultivation bottle and enters into the cultivation bottle, so the culture medium does not turn inside the cultivation bottle. Since scraping is done by picking the base, there is an advantage that scraping errors do not occur. Furthermore, when the screw 62 enters the culture medium, the medium on the inner wall side of the cultivation bottle, which is in the range that the screw 62 does not pass through, is pressed against the wall surface, so that the next scraping operation by the scraping blade 64 will be difficult. In this case, there is an advantage that the culture substrate does not rotate inside the cultivation bottle and can be scraped out reliably by the scraping blade 64.

When the scraping by the screw 62 is completed, the vertical movement box 54 is lowered and the screw 62 is lowered from inside the cultivation bottle. When the tip of the screw 62 is pulled out from the bottle spout, the cultivation bottle is released from being held by the suppression frame 42 and the bottle spout support frame 46, and the bottle spout is separated from the bottle spout fitting part 48, and the screw 62 is lowered. Although FIG. 1 shows the vertical movement box 54 in the lower position, the vertical movement box 54 is in the lower position.
4 is at the lowest position, the tip of the screw 62 is located within the metal ring 48b of the bottle mouth fitting part 48.

The cultivation bottle whose opening has been released is conveyed together with the container to the next scraping blade scraping section 50 and stopped at a predetermined position. Next, the cultivation bottle 32 and the container 34 are supported under pressure by the suppression frame 42 and the bottle mouth support frame 46, as in the case of the screw scraping section 40 described above. At the same time, the vertical movement box 54 starts to rise, and the scraping blade 64 enters into the cultivation bottle from the bottle opening of the cultivation bottle while rotating. Scraping blade 64
Due to the biasing force of the spring 64b, the cutting edges of the two blades press the culture medium toward the inner wall of the cultivation bottle, and while rotating, enter the cultivation bottle and scratch the culture medium remaining on the inner wall of the cultivation bottle. After the scraping blade 64 has entered near the bottom of the cultivation bottle, the vertical movement box 54 is lowered again. At this time, the cultivation bottle is released from being held by the suppression frame 42 and the bottle spout support frame 46, and the bottle spout is removed from the bottle spout fitting part 48.

Similar to the screw 62, the scraping blade 64 is in a position where it contacts the metal ring 48b of the bottle opening fitting part 48 when the vertical movement box 54 is in the lower position, and rotates while contacting the inner peripheral surface of the metal ring 48. are doing. Vertical movement box 54
The bottle spout support frame 46 and the bottle spout support frame 46 are interlocked with each other by adjusting the timing of the vertical movement so that the blade of the scraping blade 64 does not always come into contact with the fitting part 48a of the bottle spout fitting part 48.

Note that when the culture medium is scraped out by the scraping blade 64, the vibrator 13 is operated at the same time to forcibly apply vibration to the upper surface of the suppression frame 42. Suppression frame 4
By applying vibration to 2, the culture medium adhering to the wall of the cultivation bottle or remaining at the bottle opening is shaken off.

The suppression frame 46 is supported by the hanging member 44 to restrict upward displacement, and serves as a stop when the screw 62, scraper, and blade 64 enter the culture base, and also serves as a stop for the screw 62, scraper, and blade 64 to enter the culture base. When the blade 64 descends, it oscillates slightly and vibrations from the vibrator 13 are transmitted to the cultivation bottle, making it easier to drop the culture medium from inside the cultivation bottle. Suppression frame 42
Since the screw scraping part 40, the scraping blade scraping part 50, and the brush cleaning part 60 are integrally formed, the cultivation bottle is vibrated by each operating part by the vibration of the vibrator 13. It acts to shake off the base from the cultivation bottle.

Conventionally, with a scraping device that uses a scraping blade that scratches the culture medium, there are cases where the culture medium gets stuck in the mouth of the bottle when scraping, but as described above, the culture medium can be removed by vibration. When used in combination with the shaking-off action, there is a synergistic effect in that no culture medium remains in the cultivation bottle and scraping becomes extremely reliable.

Alternatively, as described above, if the screw 62 is used to remove the medium at the center of the medium in advance.

Scraping with the scraping blade 64 only requires removing the culture medium remaining on the inner wall surface of the cultivation bottle, and the scraping with the scraping blade 64 can be done efficiently and cleanly, and there are no problems such as the culture medium clogging the bottle opening. It has the advantage of not causing any damage.

After the scraping by the scraping blade is completed, the process moves to the next brush cleaning section 6o. In the brush cleaning section 60, the vertical movement box 54
As the brush 66 rises, the brush 66 enters the cultivation bottle while rotating and cleanly removes the culture medium attached to the inner wall of the cultivation bottle. As described above, when the suppression frame 42 is vibrated by the vibrator 13, the brush cleaning unit 60
The medium is also shaken off from the cultivation bottle.

In this embodiment, as is clear from the above description, the screw scraping section 40, the scraping blade scraping section 50, and the brush cleaning section 60 operate in conjunction with each other, and each time the operation in each section is completed, the cultivation Bottles and containers are processed sequentially to the next stage.

In terms of operation, cultivation bottles are sequentially placed in containers in the container placement section 30, and empty cultivation bottles are sequentially taken out in the container removal section 70.

FIGS. 5(a) and 5(b) are explanatory diagrams showing a schematic configuration of a reversing device for reversing a cultivation bottle placed upright in a container on the container mounting section 30 and placing it on the conveyor 14. In the figure, 80 is a pressure plate that comes into contact with the neck of the cultivation bottle 32 and presses the cultivation bottle 32 from both sides of the container 34, and is the upper part of the support rod 84 that is pivotally supported by the inversion support plate 82 on which the container 34 is placed. Fixed. The lower end of the support rod 84 extends slightly downward from the inversion support plate 82, and the tip of a drive rod 88 of an air cylinder 86 is pivotally attached to the extended end. On the end surface of the pressure plate 80 that is in contact with the neck of the cultivation bottle, a semi-circular recess is provided in accordance with the outer diameter of the neck, as shown in the fifth illustration.

The reversing support plate 82 is connected to a reversing mechanism that reverses the cultivation bottle along with the container by 180 degrees. The air cylinder 86 is operated to project drive rods 88 extending from both ends into and out in opposite directions. By protruding the drive rods 88, the pressure plate 80 is pressed against the neck of the cultivation bottle by a lever mechanism. By abutting and pressing the neck portions, the cultivation bottles housed in the container 34 are pressed against each other, all the cultivation bottles are held under pressure, and the container 34 is supported at the same time. By inverting the inversion support plate 82 as it is, the cultivation bottle can be placed on the conveyor 14.

In the embodiment shown in FIG. 1, a reversing device is installed on the front side of the container placement section 30, and the container is reversed from the front side to place the cultivation bottle on the conveyor 14.

In addition, when reversing and taking out the cultivation bottle from the top of the transport conveyor 14, it is sufficient to perform the operation opposite to the above method. The container is configured to remove the empty cultivation bottle together with the container.

Since the culture medium scraping device of the above-described embodiment uses the screw 62 and the scraping blade 64 in combination to carry out the scraping process, it is possible to greatly improve the processing speed for scraping out the culture medium. For example, with a conventional culture substrate scraping machine that uses only a scraping blade, it takes about 40 seconds to process one container, but with the device of this example, scraping can be completed in about 10 seconds per container. becomes possible. As a result, it is possible to significantly shorten the processing time, which conventionally took time and effort, and to greatly improve work efficiency.

In the above embodiment, the vertical movement box 54, bottle mouth support frame 46, etc. are configured to operate together with the screw scraping section 40 and scraping blade scraping section 50, but each scraping processing section operates separately. Of course, it is also possible to configure the vertical movement box 54 and the like to operate independently. Further, in the above example, the vibrator 13 is provided on the central support frame 12 to apply vibration to the cultivation bottle during scraping, but it is not necessary to apply vibration. Further, in the embodiment, a two-blade scraping blade 64 is used, but a normal single-blade scraping blade may be used. According to the method of this embodiment, since the center portion of the cultivation bottle is scraped out in advance using the screw 62, scraping can be done sufficiently efficiently even with the conventional method. Further, the brush cleaning section 60 is for cleaning the inside of the cultivation bottle, and may be installed as appropriate.

The present invention has been variously explained above using preferred embodiments, but the present invention is not limited to these embodiments.
It goes without saying that many modifications, such as the structure of each part, can be made without departing from the spirit of the invention.

(Effects of the Invention) The medium scraping device of the present invention, configured as described above, can remove the medium in the cultivation bottle very efficiently, speeding up the work of scraping out the medium. can be achieved. In addition, even if the culture medium contains a large amount of moisture and is difficult to scrape out, it can be scraped out reliably and efficiently.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing one embodiment of the culture medium scraping device according to the present invention, Fig. 2 is an explanatory diagram showing a state in which the vertically movable box is raised, and Fig. 3 is an explanatory diagram showing the planar shape of the conveyor, etc. FIG. 4 is an explanatory diagram showing an enlarged view of the bottle mouth fitting portion, etc., and FIG. 5 is an explanatory diagram showing the reversing device. 10... Frame body, 13. Rator, 14... Conveyor, Bottle mouth insertion hole,
30... Placement part, - Cultivation bottle, 34... Container, - Screw scraping part, 42... 44... Hanging member, 46... Vibrator 20... 32... 40...・・Press frame, ・Bottle mouth support frame, 48... Bottle mouth fitting part, 5o... Scraping blade scraping part, 52... Air cylinder, 6°... Brush cleaning part, 62...・Screw 64... scraping blade,
66...Brush, 68...Pulley, 7o...
- Removal section, 72... Belt, 80... Pressure plate, 82... Inversion support plate. Diagram

Claims (1)

[Scope of Claims] 1. Support a cultivation bottle filled with a culture medium with the bottle mouth facing vertically downward, and scrape out the culture medium by entering a scraping member such as a scraping blade into the cultivation bottle from the bottle mouth. In the culture substrate scraping device, a screw is provided vertically upward under each bottle mouth of each cultivation bottle supported with the bottle mouth facing vertically downward, and the screw is rotated around the axis to scrape the culture in the axial direction. a screw scraping part that enters into the base and scrapes out the culture base;
The cultivation bottle after the culture medium has been scraped out by the screw scraping part is supported with the bottle mouth facing vertically downward, and a scraping blade is rotatably provided below the bottle mouth of each cultivation bottle. A medium substrate scraping device characterized by comprising a scraping blade scraping unit that rotates the scraping blade and enters into the cultivation bottle to scrape out the medium adhering to the inner wall of the cultivation bottle.