JP2000270648A - Apparatus for removing stone in harvested root vegetables - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for removing a stone in a harvested root vegetable, capable of securely separating and removing a stone from a root vegetable. SOLUTION: A separator 2 equipped with an uneven face 3a on an up-slope 3 is immersed and arranged in a treating water tank 1 so as to form a return route 4 between the separator and the treating water tank 1. A water jetting mechanism 7 for spraying water upon the up-slope 3 is installed at a return flow opening 2e of the base end of the separator 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing stones contained in root vegetables such as potatoes, sweet potatoes and carrots harvested by a digging machine.

[0002]

2. Description of the Related Art Conventionally, root crops such as potatoes, sweet potatoes, carrots, etc. are dug up together with field soil and stones by a digging machine and harvested. Then, the harvested root vegetables will be sent to the processing step of peeling and sprouting, etc.Because the harvested root vegetables contain soil and stone,
Stones mixed into root crops can cause the peeler to break down and stop the peeler. However, the stoppage of some peelers in the line of the processing equipment interrupts the processing of root vegetables in the line, which may damage the root vegetables being processed and cause defective products. there were. However, at present, there is no device that reliably removes stones from root crops, and the current situation is that processing is being performed in preparation for possible problems. Had been requested.

[0003]

SUMMARY OF THE INVENTION The object of the present invention is to provide an apparatus for removing stones from harvested root crops which has been developed based on the above-mentioned demand and which can reliably separate and remove stones from root crops. It is.

[0004]

In order to achieve the above-mentioned object, the present invention relates to a separator having an uneven surface formed on an upward slope, which is provided in a treatment water tank such that a reflux path for stirring water is formed between the separator and the treatment water tank. A device for removing stones in harvested root crops, which is provided with a water jetting mechanism that jets water toward the upward slope at the reflux opening at the base end of the separator, while being immersed in the separator. Item 1. In the invention of Item 1, by imparting resilience to the collided root vegetables by imparting elasticity to the uneven surface to promote the separation of stones, and to prevent the root vegetables from being scratched, cracked, or broken. The function and effect of performing the operation can be obtained. Further, in the invention of the first aspect and the above-mentioned structure, the turbulence can be efficiently generated in the water flow flowing in the separator by forming the uneven surface into a wavy ridge orthogonal to the direction of the water flow, and the root vegetables can be produced. In addition to being able to stir and flow effectively, it is possible to obtain the function and effect that the forming process of the uneven surface is simple and the manufacturing can be performed at low cost.

Further, in the invention according to the first aspect and each of the above constitutions, by making the uneven surface freely replaceable, if the uneven surface is damaged, it can be easily replaced and repaired, and the type and size of root vegetables It is possible to obtain the effect of being able to change the size and interval of the unevenness according to the weight and the weight, and to make it possible to cause an optimal stirring flow according to the type of root vegetables. Further, in the invention of claim 1 and each of the above configurations, by making the forward end of the separator tapered, it is possible to suppress a decrease in the flow velocity at the forward end of the upward slope and to perform efficient separation over the entire separator. It is possible to obtain the effect of being able to.
Further, in the invention of claim 1 and the above-mentioned respective structures,
By attaching a crop stopper to the reflux opening of the separator, it is possible to prevent the root crops that could not carry the water flow from flowing into the treated water tank, and to obtain the effect of being able to suppress a decrease in yield. it can.

In the invention according to the first aspect and each of the above constitutions, the upper nozzle hole and the lower nozzle hole are arranged in parallel with the nozzle pipe of the water injection mechanism, so that the root vegetables can be separated from the base end of the separator. The effect of being able to reliably prevent accumulation in the valley to be in a non-fluid state, and to be able to efficiently carry out stirring and flowing and feeding of root vegetables can be obtained. Further, in the invention according to claim 1 and the above-mentioned respective structures, by facing the tip of the transport mechanism for carrying out root crops to the outside below the delivery opening of the separator,
Since the root vegetables from which the stones have been removed and separated can be automatically carried out to the outside, it is possible to obtain an operational effect that facilitates the incorporation into the next process line or the like.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described in detail with reference to FIGS. Reference numeral 1 denotes a stainless steel treatment water tank having a rectangular shape. The treatment water tank 1 includes a stainless steel separator 2 provided with a water injection mechanism 7 for separating stones mixed into root vegetables, and a root vegetable without stones. And a transport mechanism 12 for transporting the water from the treated water tank 1 to the outside.

The separator 2 has a tapered upward slope 3 on the outflow direction side of the water flow, a leading end of the upward slope 3 serving as a delivery opening 2b, and a reflux for returning circulating water to the base end of the upward slope 3. It is made of a stainless steel rectangular box having an opening 2e and a crop input port 2c at the upper end of the base.
a is attached. Due to the uneven surface 3a, the water flow becomes turbulent, and the root vegetables in the separator 2 are vigorously stirred and fluidized, and the stones mixed in the root vegetables separate from the root vegetables and settle, and remain on the uneven surface 3a, and only the root vegetables are left. It is sent out from the separator 2. The uneven surface 3a is a plastic corrugated plate that is exchangeably disposed on the uphill slope 3 so that a repulsive force can be applied to root vegetables that have collided with the corrugated plate, and when the uneven surface 3a is damaged. The size and spacing of the uneven surface 3a are changed according to the type, size, weight, etc. of the root vegetables, and the turbulence and repulsion are optimized according to the type of root vegetables. It is settable.

Further, the separator 2 has a reflux path 4 through which agitated water can be circulated between an outer bottom surface of the separator 2 and an inner bottom of the treatment water tank 1 and between a side surface of the treatment water tank 1 and a side surface of the separator 2. , And are immersed in the treatment water tank 1 with a gap 5 therebetween. The gap 5 formed below the separator 2 has a tip-opening 5a formed by the upward slope 3 of the separator 2 as a maximum, and becomes gradually narrower toward the base end of the separator 2, so that the outlet opening 2b of the separator 2 is formed. The outflowing water stream hits the treatment water tank 1 so that the flow rate of the water stream which is returned to the gap 5 increases toward the base end. By increasing the flow velocity in this manner, the amount of agitated water supplied into the separator 2 is not shorted, and a strong water flow is formed in the separator 2.
Further, by making the upward slope 3 tapered, the flow velocity of the water flow passing through the separator 2 is prevented from decreasing. Reference numeral 6 denotes a crop stop attached to the return opening 2e at the base valley of the separator 2. The crop stop 6 is composed of a plurality of horizontal rods 6a extending over the return opening 2e of the separator 2.
The width of each horizontal rod 6a is set to a size that does not allow root vegetables to pass through.

Reference numeral 7 denotes a water injection mechanism attached to the separator 2. The water injection mechanism 7 includes a pump 7a and the pump 7a.
And a nozzle tube 7c connected via a connection hose 7b. The nozzle tube 7c is disposed near the reflux opening 2e at the base end of the separator 2 over the entire width of the reflux opening. In addition, the water flow spouted from the nozzle pipe 7c toward the upward slope 3 becomes turbulent due to the wavy uneven surface 3a of the upward slope 3, and the root vegetables in the separator 2 are vigorously stirred and flown. Further, the nozzle pipe 7c is provided with an upper nozzle hole 8a and a lower nozzle hole 8b which are arranged in a staggered manner and penetrate therethrough, and the water jet spouted from the upper nozzle hole 8a is sprayed on the root vegetables to stir the root vegetables. This is to fluidize and generate a water stream for sending the root vegetables from the separator 2. In addition, the water jet spouted from the lower nozzle hole 8b is sprayed on the root vegetables to stir and fluidize the root vegetables,
The lower root vegetables are placed in the water stream of the upper nozzle hole 8a. Such root crops that collide with the uneven surface 3a while riding on the water jets ejected from the upper nozzle hole 8a and the lower nozzle hole 8b bounce off due to the elasticity of the uneven surface 3a, and are further violently randomly stirred and mixed into the root vegetables. The separated stones are surely separated and removed. Also, the lower nozzle hole 8
The water stream b serves to fluidize the root vegetables charged and deposited in the vicinity of the valley (the reflux opening 2e) of the separator 2 and to put the root vegetables on the water stream of the upper nozzle hole 8a. Reference numeral 9 denotes a strainer connected to a water supply port of the pump 7a.
Prevents the pebbles and the like from being sucked into the pump 7a, thereby preventing the blades of the pump 7a from being damaged. Reference numeral 10 denotes a motor for driving the pump 7a, and reference numeral 11 denotes a valve for adjusting the amount of water in the water injection mechanism 7.

The transport mechanism 12 is for transporting the root vegetables from which stones have been removed to the outside from the treatment tank 1.
The transport mechanism 12 includes a side frame 1 disposed obliquely in the treated water tank 1.
3, 13; sprocket wheels 13a, 13b pivotally supported at the beginning and end of the side frames 13, 13; an endless chain 13c wound around the sprocket wheels 13a, 13b; A plate 14 with a gate-shaped frame bar 14a that is stretched at intervals,
The bar conveyor 12a includes a plurality of bars 15 stretched over an endless chain 13c between the platelets 14, and root vegetables are drained and carried out by the bar conveyor 12a. The starting end of the bar conveyor 12a as the transport mechanism 12 is disposed near the bottom in the treated water tank 1 so that the delivery opening 2b of the separator 2 faces upward, and the end is located outside the upper part of the treated water tank 1. I have. Reference numeral 16 denotes a discharge chute for root vegetables formed at the bottom of the end of the transport mechanism 12;
Reference numeral 7 denotes a side cover attached to the side frames 13, 13 of the transport mechanism 12, and the side covers 17, 17 are for preventing root vegetables from falling off from both sides. 18 is the transport mechanism 1
A motor 19 with a speed reducer for driving the motor 2 is a driving force transmission chain wound around the sprocket 18a of the motor 18 with the speed reducer and the sprocket 20 attached to the shaft of the sprocket wheel 13b of the bar conveyor 3a.

An overflow hose 21 is attached to the treated water tank 1. One end of the overflow hose 21 is connected to a lower part of the side wall of the treated water tank 1, and the other end is connected to a height-adjustable arm 23 by a hook 22. This is for stopping and keeping the water level of the treated water tank 1 constant.

[0013] The thus constructed water treatment tank 1
After supplying water from a water supply pipe (not shown), the motor 10 of the water injection mechanism 7 is driven to operate the pump 7a.
By the operation of the pump 7a, the water in the treated water tank 1 is sucked through the strainer 9 and sent to the nozzle pipe 7c arranged near the reflux opening 2e through the hose 7b. And the upper nozzle hole 8a and the lower nozzle hole 8b of the nozzle pipe 7c
From this, water is sprayed toward the upward slope 3 of the separator 2. The injection of the upper nozzle hole 8a is performed by the discharge opening 2 of the separator 2.
b, and the jet of the lower nozzle hole 8 b is directed to a substantially intermediate portion of the upward slope 3 on which the corrugated uneven surface 3 a of the separator 2 is formed. Then, the water jet ejected from the lower nozzle hole 8b hits the uneven surface 3a to form a turbulent flow,
The separator 2 is mixed with the water flow from the upper nozzle hole 8a.
From the delivery opening 2b. The water flow sent from the outlet 2b of the separator 2 collides with the opposite side wall of the treated water tank 1 and is reflected, flows into the gap 5 as the return passage 4 formed below the separator 2, and flows into the return opening 2b.
e to form a circulating flow that is again delivered from the delivery opening 2b of the separator 2.

The recirculation path 4 for forming the circulating flow has a leading opening 5a which narrows from the largest opening 5a on the lower surface of the leading end of the separator toward the base end of the separator.
The flow rate of the water recirculated into the gap 5 is increased, and a sufficient amount of water is sent to the recirculation opening 2e. Then, this circulating water flow is supplied to the upper nozzle hole 8 of the nozzle pipe 7c of the water injection mechanism 7.
a and accelerated by the water jetted from the lower nozzle hole 8b, flow toward the upward slope 3 having the uneven surface 3a of the separator 2, and flow out of the delivery opening 2b while generating turbulent flow on the uneven surface 3a. Become. In a state where such a circulating water flow is formed in the treated water tank 1, root crops are introduced from the crop introduction port 2 c of the separator 2.

The root crops fed from the crop inlet 2c are fed into the base valley of the separator 2, but the water jets injected from the upper nozzle hole 8a and the lower nozzle hole 8b of the nozzle pipe 7c are root crops. And the root vegetables are stirred and fluidized. And the root vegetables that are stirred and flowed are the nozzle pipe 7c.
The water is jetted from the upper nozzle hole 8a and the lower nozzle hole 8b to be sent out of the separator 2. The root crops are entrained in the turbulent flow formed by the uneven surface 3a of the separator 2, collide with the uneven surface 3a, bounce off due to the elasticity thereof, and violently agitate and flow. The stones mixed into the root vegetables are separated by this stirring flow,
It will settle on the uneven surface 3a of the upward slope 3. In this way, the root vegetables go up the slope 3 of the separator 2 by the water flow from the upper nozzle hole 8a while separating and removing the stone.

At the time when the ascending slope 3 is completely lifted, 100% of the stones are removed from the root vegetables, and the stones are sent into the treated water tank 1 through the delivery opening 2b of the separator 2. The root vegetables sent out into the treated water tank 1 have a tip disposed below the delivery opening 2b of the separator 2, and the bar 1 of a bar conveyor 12a as an unloading device 12 is provided.
5 will be sent. The root vegetables are scraped up by the frame-shaped bar 14 a erected on the sheet 14 between the bars 15, drained from the water in the treatment water tank 1, pulled up, and discharged chute 1 formed at the end of the transport mechanism 12.
6 to the outside. The stirring water in the treatment water tank 1 is contaminated by such a separation operation, but the stirring water is drained from an overflow hose 21 having a base connected to the bottom of the treatment water tank 1, and new stirring water is supplied from a water supply pipe (not shown). Since it is supplied, the contamination of the stirring water is suppressed.

In the preferred embodiment, the uneven surface 3a is a corrugated plastic plate arranged on the up slope 3 at a wavy shape. However, the separator 2 is made of stainless steel and the uneven surface 3a is press-formed on the up slope 3. In this case, the entire upward slope 3 is given elasticity by bending of the stainless steel. The uneven surface 3a
Although the wavy ridge perpendicular to the circulating water flow is formed continuously over the entire width of the upward slope 3, it is a matter of course that the bulging portions may be intermittently arranged in a staggered manner.

[0018]

According to the present invention, as is apparent from the above description, a separator is disposed in a treatment water tank so that a reflux path for stirring water is formed between the separator and the treatment water tank, and the separator has an uneven slope. By forming a water jetting mechanism for jetting water toward the upward slope, a water stream is jetted to the root crops introduced into the separator and agitated and caused to flow in the turbulent flow generated by the uneven surface of the separator. The root vegetables are sent to and stirred and fluidized, and the root vegetables that flow on the uphill slope by turbulence are bounced off by colliding with the uneven surface, and are stirred and fluidized more vigorously.
By separating the stones mixed into the root crops and sedimenting them on the uneven surface, it is possible to mechanically perform the separation and removal of stones, which was not possible in the past, and to improve productivity. Since the line of the processing equipment does not stop due to troubles caused by stones, there are few occurrences of defective products, the yield can be greatly improved, and various cost reductions can be achieved. It has advantages. Therefore, the present invention greatly contributes to the development of the industry as an apparatus for removing stones from harvested root vegetables which has solved the conventional problems.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a preferred embodiment of the present invention.

FIG. 2 is a plan view showing a preferred embodiment of the present invention.

FIG. 3 is a sectional view showing a separator portion according to a preferred embodiment of the present invention.

FIG. 4 is a cross-sectional view illustrating a transport mechanism according to a preferred embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Treatment water tank 2 Separator 2e Reflux opening 3 Up slope 3a Uneven surface 4 Reflux path 7 Water injection mechanism

Claims (1)

[Claims] A separator (2) having an uneven surface (3a) formed on an upward slope (3) is provided with a reflux path for stirring water between the separator (2) and a treated water tank (1).
A water injection mechanism for immersing and disposing in a treatment water tank (1) so as to form (4), and for injecting water toward an upward slope (3) at a reflux opening (2e) at a base end of the separator (2). (7) A device for removing stones from harvested root vegetables, comprising: