JP3192091U - Tank water supply grinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continuously and surely and continuously supply water to a rotary blade without interrupting operations such as cutting, grinding or polishing of an object by the rotary blade of a grinder, and to continue scattering dust generated by the rotary blade. To provide a water supply tank device having good workability and reducing the amount of water. SOLUTION: A water supply that reduces the scattering of dust by supplying water to the rotary blade when a rotary blade 2b covered with a cover 2c of a grinder 2 comes into contact with an object to be processed. In the tank device 10, a water absorbing body 5 that abuts on the side surface of the rotary blade, a holding portion 4 that holds the water absorbing body, a fixture 13 that holds the holding portion and is fixed to the cover, and the above. A tank 6 having a cap 6b for storing water and being fixed to the cover, a liquid feeding unit 7 having one end located in the tank and the other end communicating with the water absorber, and the liquid feeding unit 7 taking air into the tank and feeding the water. The configuration of the water supply tank device is characterized by comprising an intake unit 8 that enables natural water flow to the liquid unit. [Selection diagram] Fig. 1

Description

  The present invention rotates the rotating blade of a grinder that cuts, grinds or polishes an object such as concrete, stone, metal, wood, plastic such as vinyl chloride, etc., and reduces dust when it contacts the object with water The present invention relates to a water supply tank apparatus and a tank water supply type grinder.

  The invention of Patent Document 1 is disclosed as a technique for reducing dust in cutting, grinding, polishing, or the like using a rotary blade. The invention of Patent Document 1 is an apparatus that can be attached to a grinder used for cutting concrete or the like to prevent dust from being scattered and can also effectively collect dust, along the rotary blade 3 of the grinder 1. And a porous water absorbent cover 10 that is detachably attached to the protective member 4 provided, and a porous water absorbent hood 20 that is detachably attached near the rear end of the protective member 4.

In paragraph 0012 of Patent Document 1, “the cover 10 has a curved locking portion 12 having a surface fastener 11 that engages with the surface fastener 5 as shown in FIGS. 3 and 4, and It consists of a substantially crescent-shaped eaves portion 13 protruding from the upper end so as to cover the rotary blade 3. The eave portion 13 is formed of a porous and water-absorbing material such as sponge or cotton. In addition, if a flap 14 is provided at the tip of the locking portion 12 and a slit 15 is provided in the middle of the flap 14 so that the rotary blade 3 rotates through the slit 15, the dustproof effect is further improved. This flap 14 is also preferably made of a porous water-absorbing material such as sponge. "

In addition, paragraph 0017 states that “when using the dustproof device as described above, if the eaves portion 13 and the dust bag 22 are impregnated with water, the dustproof / dust collecting effect is improved”.

  That is, the dust prevention device of the grinder of the cited document 1 is a porous water absorbent cover that covers the rotary blade and collects dust with a porous water absorbent hood, and impregnates water as necessary. is there.

However, in the dustproof device of the grinder of the cited document 1, even if the porous water-absorbing cover is impregnated with water, the impregnated water is blown off by the rotation of the rotary blade as the work proceeds, and sufficient dust is continuously generated. The prevention effect cannot be demonstrated. In order to maintain the dust-proof effect, operations such as cutting, grinding or polishing must be interrupted from time to time to perform water-containing work on the porous water-absorbent cover, which is cumbersome and inefficient in workability.

Japanese Utility Model Publication No. 5-85545

Therefore, the present invention continues to supply water to the rotary blade reliably and continuously without interrupting operations such as cutting, grinding or polishing of the object with the rotary blade of the grinder, and scattering of dust generated by the rotary blade. An object of the present invention is to provide a water supply tank device and a tank water supply type grinder with good workability that continuously reduce the water content.

In order to solve the above problems, the present invention
(1)
A water supply tank device that reduces dust scattering by supplying water to the rotary blade, dust scattered by the rotary blade covered with a grinder cover coming into contact with the object to be treated,
A water-absorbing body in contact with a side surface of the rotary blade;
A holding portion for holding the water absorbent;
A fixture that holds the holding portion and is fixed to the cover;
A tank having a cap for storing the water and being fixed to the cover;
A liquid feed section having one end located in the tank and the other end communicating with the water absorbent;
An air intake section that takes air into the tank and allows natural water flow to the liquid feeding section;
A water tank apparatus comprising:
(2)
(1) characterized in that the intake portion is provided with a knob for adjusting the intake amount of air, and the amount of water flowing into the liquid supply portion is adjusted by adjusting the intake amount of air. Water tank equipment.
(3)
The water tank apparatus according to (1) or (2), further comprising: a protector that hangs and is fixed to a bottom of the cover or / and the main body of the grinder and applies splashes splashed off by the rotary blade.
(4)
(1)-(3) The water supply tank apparatus in any one of (3) was mounted | worn with the cover of the said grinder, The tank water supply type grinder characterized by the above-mentioned.
(5)
The tank water supply grinder according to (4) is provided with a forced water supply type water storage and liquid supply device, the tank and the intake portion are excluded from the tank water supply grinder, and the water storage and liquid supply device is provided in the liquid supply portion. The tank water supply type grinder is characterized in that liquid feeding from the water storage liquid feeding device is also possible by connecting a liquid feeding tube through which water is fed from.
It was.

  Since the present invention has the above-described configuration, water is reliably and continuously supplied to the rotating blade of the grinder without interrupting operations such as cutting, grinding or polishing of the object, and the dust generated by the rotating blade can be reduced. Spattering can be prevented continuously. In addition, since the dust can be reduced with water by using the present invention for the rotary blade in the cutting, grinding, and polishing of the object, it is possible to reduce the health damage of the worker due to the suction of the dust. Moreover, since it is a tank water supply type, preparation, workability, and cleaning up are easy.

  Water supply is limited because of the water supply tank type, but it is convenient to use because it does not leak (does not discharge) when the grinder is not in use or carried without using a valve or the like without water supply and water stop operations.

1 is a schematic perspective view of a first embodiment of a tank water supply type grinder according to the present invention. It is a front schematic diagram of a first embodiment of a tank water supply type grinder according to the present invention. It is a front schematic diagram of the cap of the tank water supply type grinder which is this invention, an intake part, a liquid feeding part, and intervention. It is explanatory drawing of the attachment method to the cover of a fixing tool. It is a perspective schematic diagram of an intervention. It is a front schematic diagram of another water supply tank apparatus. It is explanatory drawing (tank diagonal position) of a non-return valve. It is explanatory drawing (tank upside down position) of a check valve. It is explanatory drawing of a 2nd protector. It is explanatory drawing of another protector. It is explanatory drawing of an integrated protector. It is a back perspective view of an integrated protector. It is explanatory drawing of the water supply from a water storage liquid feeding apparatus.

  Hereinafter, the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to the following Example.

  As shown in FIGS. 1-5, the tank water supply type grinder 1 which is 1st embodiment of this invention is the grinder 2, the fixing tool 3, the holding | maintenance part 4, the water absorption body, and the water supply tank apparatus 10. The dust which consists of the protector 12 and is scattered when the rotary blade 2b comes into contact with the object to be processed is reduced by supplying water to the rotary blade 2b. The protector 12 is used as necessary.

  The grinder 2 incorporates a motor that rotates the rotary blade 2b and is connected to a main body 2a that is gripped by a hand, a cord 2d that is electrically connected to the motor of the main body 2a, and a power source that is provided at an end of the cord 2d. An existing plug 2e and a cover 2c that covers approximately half of the upper side of the upper surface of the rotary blade 2b and that is exposed to the entire surface of the rotary blade 2b and is detachably fixed to the main body 2a. Or a grinder (sometimes called a sander or the like) can be used.

  As a power source, a rechargeable battery or a generator can be used in addition to a commercial power source. Further, an engine-type grinder does not include a motor and a cord 2d and does not require a power source. The present invention can also be applied to an engine type grinder.

  The water absorbing body is housed in the holding portion 4, and the end portion slightly protrudes from the holding portion 4 and comes into contact with the side surface of the rotary blade 2 b. The material of the water-absorbing body is the sponge 5 here, but the name and the material are not particularly limited as long as the material is porous and water-absorbing. For example, cloth can be used, and various materials can be combined. The shape of the water absorbing body is a columnar shape here, but the shape is not limited and depends on the shape of the holding portion 4.

  Without adopting the sponge 5, simply spraying and supplying the water 6c to the rotary blade 2b causes the water sprayed and supplied by the rotation of the rotary blade 2b to be repelled and sufficiently wet the rotary blade 2b. Therefore, it cannot make a coexistence of dust and water, and the dust scattering effect is not high.

  The holding unit 4 stores and holds the sponge 5. Here, as shown in FIG. 4, a cylindrical shape having a notch-like hole 4 a through which the liquid feeding part 7 is inserted is used, but if the sponge 5 is fixed so as not to be blown off by the rotation of the rotary blade 2 b, The sponge 5 may be held by other means.

  Here, as shown in FIG. 4 and the like, the fixture 3 includes a left L-shaped portion 3a having a left L-shaped groove 3b and fixed to the cover 2c, and a right having a right L-shaped groove 3d and fixed to the cover 2c. The L-shaped portion 3c, the left and right L-shaped portions 3a, 3c are connected and fixed by the fastener 3f, and the holding portion 4 is positioned and held by a screw 3g or the like, and the second hole 2g of the cover 2c is inserted. The left and right engaging portions 3h and 3i and the wing nut 3k which is screwed into the left and right engaging portions 3h and 3i and fastens and fixes the left and right L-shaped portions 3a and 3c to the cover 2c.

  The left and right L-shaped portions 3a and 3c are rotatable and can be moved according to the size of the cover 2c. The shape of the fixing device 3 is not limited as long as the holding unit 4 can be fixed to the cover 2c by fixing the position of the holding unit 4 as described above. When the left and right L-shaped portions 3a and 3c are not rotated, the left and right L-shaped portions 3a and 3c, the connecting portion 3e, and the holding portion 4 may be integrally formed.

  A method of fixing the fixture 3 to the cover 2c will be described with reference to FIG. First, as shown in FIG. 4A, the left and right L-shaped portions 3a and 3c and the connecting portion 3e are assembled, the holding portion 4 is attached to the connecting portion 3e, and the sponge 5 is stored in the holding portion 4.

  Subsequently, the left and right L-shaped grooves 3b and 3d are fitted into the left and right engaging portions 3h and 3i that are locked inside the cover 2c shown in FIG. 4B and project outward (FIG. 4C). In addition, the 3rd hole 2h of FIG. 4 (B) is a hole for fixing the interposition 9 to the cover 2c with the screw 9g.

  Thereafter, as shown in FIG. 4D, the left and right L-shaped portions 3a and 3c are slid in the direction of solid arrows (upward in FIG. 4), and the left and right engaging portions 3h are bent at the bent portions of the left and right L-shaped grooves 3b and 3d. 3i is locked.

  Finally, the wing nut 3k is screwed into the left and right engaging portions 3h and 3i, the fixing tool 3 is tightened, and the fixing to the cover 2c is completed. Here, the left and right engaging portions 3h and 3i are screws. However, it is also possible to extend the screw end portion and fit the screw into the bent portion of the left and right L-shaped grooves without using the wing nut 3k. 3 can be prevented from falling off.

  As a result, the first hole 2f of the cover 2c and the hole 4a of the holding portion 4 coincide with each other, and a through hole penetrating the cover 2c and the holding portion 4 is formed. Thereafter, when the water supply tank device 10 is fixed to the cover 2 c together with the interposition 9, the liquid feeding part 7 is inserted into the through hole, and the water 6 c is continuously supplied to the sponge 5.

  The water supply tank apparatus 10 includes a tank 6, a liquid feeding unit 7, an intake unit 8, and an interposition 9, and a cover 2 c of a handy type grinder 2 including a rotary blade 2 b partially covered with a cover 2 c. The water 6c is continuously supplied to the rotary blade 2b.

  The tank 6 includes a main body 6a that stores water 6c and a cap 6b that is screwed into the main body 6a, and is directly or indirectly fixed to the cover 2c. When the water 6c in the tank 6 is reduced, the main body 6a is removed from the cap 6b, the water 6c is replenished to the main body 6a, and then screwed into the cap 6b again.

  The liquid feeding part 7 is a tubular tube made of rubber, metal or the like, one end of which is located in the tank 6 and the other end connected to the water absorbing body, and the material is not limited. Here, it passes through the hole drilled in the cap 6b, the first hole 2f of the cover, and the hole 4a of the holding part 4 and is pierced into the sponge 5 to continuously absorb water 6c. By taking in air 6d from the intake portion 8, the water 6c naturally passes through the sponge 5 by turning the rotary blade 2b downward. The other end of the liquid feeding section 7 may bypass the cover 2 c and bypass the cover 2 c to communicate with the sponge 5 to supply the water 6 c to the sponge 5. In addition, you may integrally mold the liquid feeding part 7 and the cap 6b.

  The intake portion 8 takes air 6d into the tank 6 and allows natural water flow to the liquid feeding portion 7, and is positioned outside the tank 6 of the tube 8a passing through the cap 6b and the tube 8a. An inlet 8b at one end, a knob 8c for adjusting the intake air amount provided in the tube 8a, and a check valve 8d at one end connected to the main body 6f of the tank 6. The check valve 8d includes a cylinder 8e connected to one end of the tube 8a, a valve 8f that moves up and down in the cylinder 8e, and a discharge port 8g of air 6d provided at the other end of the cylinder 8e. In any case, the check valve 8d has a structure that allows only one-way flow of air from the outside to the inside of the tank 6 without discharging the water 6c in the tank 6. It is not a thing. Further, the check valve 8d and the knob 8c may be installed directly on the tank 6 as separate bodies. By adjusting the air intake amount with the knob 8c, the amount of water 6c passing through the liquid feeding section 7 can be adjusted. The tube 8a and the cap 6b may be integrally formed.

  As shown in FIG. 5 and the like, the interposition 9 includes a hole 9b formed at the position of the hole of the cap 6b and the first hole 2f of the cover 2c, and a screw hole 9c that fixes the interposition 9 to the cap 6b with a screw 9f. It consists of a flat plate 9a and a hanging portion 9d provided with a hole 9e depending from the flat plate 9a. The hole 9e is a screw hole through which a screw 9g for fixing the interposition 9 to the cover 2c is passed. The interposition 9 is fixed to the cover 2c with a screw 9g.

  As shown in FIG. 2, the protector 12 includes a fixing tool 13 and a sheet 14. The protector 12 is fixed to the bottom of the cover 2 c, and the other end of the sheet 14 hangs downward and splashes due to the rotation of the rotary blade 2 b. To reduce dirt around the operator and work area. The sheet 14 is desirably a flexible waterproof sheet such as a rubber sheet.

  The fixture 13 includes a U-shaped sandwiching portion 13a, a magnet 13b disposed in the sandwiching portion 13a and fixed to the sandwiching portion 13a with a screw 13c, and the like, and screwed into the sandwiching portion 13a to cover the sandwiching portion 13a. It consists of a butterfly bolt 13d to be fixed to 2c, a plate 13e having a hole through which the fastener 13f connected to the clamping portion 13a is passed, and a fastener 13f for fixing the sheet 14 to the plate 13e. The sandwiching portion 13a and the plate 13e may be integrally formed of plastic or metal or separately formed.

  In place of the fixture 13, even if the seat 14 is fixed to the bottom of the cover 2c via a plate with the left and right engaging portions 3h and 3i and the wing nut 3k in the same manner as the left and right L-shaped portions 3a and 3c of the fixture 3. Similarly to the interposition 9, the sheet 14 may be fixed by screwing an L-shaped metal fitting with a screw 9g to the left side surface of the cover 2c. Anyway, the fixing tool 13 will not be specifically limited if it is a shape which can hang down and fix the sheet | seat 14 to the bottom part of the cover 2c.

  The magnet 13b is attracted to the cover 2c of the grinder 2 made of iron or the like by a magnetic force, and is temporarily fixed until the clamping portion 13a is fixed with the butterfly bolt 13d. The position of the protector 12 is maintained and the fixing operation is assisted. By having the magnet 13b, one person can easily tighten the butterfly bolt 13d.

  If the magnet 13b is a neodymium magnet, the protector 12 can be stably attached to the cover 2c even in the grinder 2 operation without using the butterfly bolt 13d.

  With reference to FIG. 6, another water supply tank apparatus 10a will be described. The water supply tank apparatus 10a is different from the water supply tank apparatus 10 of the first embodiment in that the intake portion 8 does not penetrate the cap 6b but penetrates the main body 6f. Others are the same as the water tank apparatus 10.

  That is, the water supply tank apparatus 10a includes a tank 6e, a liquid feeding unit 7, an intake unit 8h, and an interposition 9, and includes a rotary blade 2b partially covered with a cover 2c. The cover 2c is detachably mounted and used, and water is continuously supplied to the rotary blade 2b.

  The tank 6e includes a main body 6f that stores water 6c and a cap 6g that is screwed into the main body 6f, and is directly or indirectly fixed to the cover 2c.

  The intake portion 8h takes air 6d into the tank 6e and allows natural water flow to the liquid feeding portion 7. The intake portion 8h is located at one end of the tube 8a located outside the tank 6e. It consists of a port 8b, a knob 8c for adjusting the intake air amount provided in the tube 8a, and a check valve 8d connected to the main body of the tank 6e at one end located on the tank 6e side.

  As shown in FIG. 7, even when the water supply tank apparatus 10a is inclined, if the liquid feeding part 7 is located at the bottom of the water 6c, the water 6c naturally passes from the liquid feeding part 7 to the sponge 5. Watered. As the water flows, the intake portion 8h draws air from the intake port 8b and discharges the air from the outside of the tank 6e into the tank 6e even if the discharge port 8g is exposed in the water 6c or from the water 6c. Air is introduced into the tank 6e from the discharge port 8g by the passing check valve 8d, and natural water flow is enabled from the liquid feeding section 7.

  As shown in FIG. 8, when the water supply tank apparatus 10a is turned upside down on the cap 10b side, the water 6c is not in contact with the liquid feeding section 7, so that the water 6c is naturally not discharged from the liquid feeding section 7. On the other hand, although the discharge port 8g of the intake portion 8h is located in the water 6c, the water 6c is not discharged from the intake port 8b because it includes the one-way check valve 8d from the outside of the tank 6e into the tank 6e.

  Accordingly, in the water supply tank apparatus 10a, the rotary blade 2b is down and the liquid feeding part 7 is located at the bottom of the water 6c during operations such as grinding. ) On the other hand, when the rotary blade 2b is not used, if the rotary blade 2b is positioned above the tank 6e, the water 6c is not drained from the liquid feeding section 7 and is saved. Further, if the introduction of air into the tank 6e is blocked by the knob 8c, the water 6c is not passed through the liquid feeding unit 7 even if the liquid feeding unit 7 is at the bottom of the water 6c.

  Next, the added second protector 16 will be described with reference to FIG. The second protector 16 includes a second sheet 16a hanging from the bottom of the main body 2a of the grinder 2 of the tank water supply type grinder 1 of the first embodiment, a band 16b for fixing the second sheet 16a to the main body 2a of the grinder 2, and a band 16b. The fastener 16c is fastened and fixed to the main body 2a. The second sheet 16 a is the same as the sheet 14. The second protector 16 can be used alone without using the protector 12.

  By positioning the second sheet 16a at the bottom of the main body 2a of the grinder 2, it is possible to prevent the splashes splashed by the rotary blade 2b from hitting the main body 2a and the hand. Since the grinder 2 does not originally have a waterproof function, it is desirable to prevent the grinder 2 from malfunctioning or electric shock.

  Next, another protector 17 will be described with reference to FIG. The protector 17 is used in place of the protector 12 of the first embodiment. The protector 17 is detachably fixed to the bottom of the cover 2c by butterfly bolts 17b and 17b, and the left and right extending from the plate to the right and left. A T-plate 17a having a portion and a sheet 17c fixed to the left and right projecting portions by hanging down by a fastener 17d.

  Since the protector 17 has a hole in the cover 2c and is firmly fixed to the cover 2c with the butterfly bolt 17b, and the water tank device 10 is also fixed to the cover 2c, the cover 2c and the existing grinder 2 The cover 2c can be replaced with the main body 2a.

  Next, the integrated protector 18 will be described with reference to FIGS. 11 and 12. The integrated protector 18 includes a second sheet 18a that covers from the left overhanging portion on the main body 2a side of the protector 17 of the fourth embodiment to the bottom of the main body 2a, a back surface of the second sheet 18a, and the left overhanging portion 18d. It consists of the L-shaped connector 18c connected by 18e. The main body 2a side end portion of the second sheet 18a includes a convex portion 18b along the shape of the main body 2a.

  Even when the second sheet 18a is positioned at the bottom of the main body 2a of the grinder 2, it is possible to prevent the splash splashed by the rotary blade 2b from hitting the main body 2a and the hand.

  Next, with reference to FIG. 13, the water supply method to the rotary blade 2b by the forced water supply type water storage and supply device 15 will be described. In the third embodiment, the tank water supply type grinder 1 further includes a forced water supply type water storage and supply device 15.

  By removing the tank 6 and the intake portion 8 from the tank water supply type grinder 1 of Example 1, and connecting the liquid supply tube 15g through which the water 15b supplied from the water storage and supply device 15 passes to the liquid supply portion 7, It is also possible to send water 15b from the water storage and delivery device 15. Thereby, depending on the working time of the grinder 2, it is possible to select natural water supply from the water supply tank devices 10, 10a and forced liquid supply from the water storage liquid supply device 15, and to use two water supply methods in combination. Become.

  The water storage and delivery device 15 is provided with a tank body 15a capable of accumulating a large amount of water 15b, an internal tube 15d that is located inside the tank body 15a and discharges the water 15b to the outside of the tank, and is screwed into an opening of the tank body 15a. A cap 15c to be joined, a pressurizing portion 15f that is attached to the cap 15c and increases the pressure in the tank body 15a by a piston operation, a liquid feeding tube 15g that passes through the internal tube 15d and passes water 15b that is pushed out by pressure, It consists of a connecting pipe 15h that connects the liquid feeding tube 15g and the liquid feeding section 7, and a knob 15i that adjusts the amount of water to be fed.

  By using the tank body 15, a long-time grinder action is possible, and the start of the work, the cleaning of the instrument, and the tidying up are extremely useful. A commercially available pressurized outdoor pump or the like can be used as the water storage and delivery device 15. The cord 2d and the liquid feeding tube 15g may be bundled together with a binding band or the like. The cord 2d and the liquid feeding tube 15g do not get in the way and workability is improved.

  In addition, the liquid supply of the water 15b of the tank main body 15a can be replaced with a pressurization type, and liquid supply by a pump from a container in which water is stored can be employed. Further, the liquid feeding tube 15g may be connected to a tap of a water tap to supply water to the liquid feeding unit 7. The amount of water supply can be adjusted by changing the opening and closing of the faucet.

DESCRIPTION OF SYMBOLS 1 Tank water supply type grinder 2 Grinder 2a Main body 2b Rotary blade 2c Cover 2d Cord 2e Plug 2f First hole 2g Second hole 2h Third hole 3 Fixing tool 3a Left L-shaped part 3b Left L-shaped groove 3c Right L-shaped part 3d Right L-shaped groove 3e Connecting portion 3f Fastener 3g Screw 3h Left locking portion 3i Right locking portion 3k Wing nut 4 Holding portion 4a Hole 5 Sponge 6 Tank 6a Main body 6b Cap 6c Water 6d Air 6e Tank 6f Main body 6g Cap 7 Liquid feeding Portion 8 Air intake portion 8a Tube 8b Air intake port 8c Knob 8d Check valve 8e Tube 8f Valve 8g Discharge port 8h Air intake portion 9 Interposition 9a Flat plate 9b Hole 9c Screw hole 9d Hanging portion 9e Hole 9f Screw 9g Screw 10 Water tank device 10a Water tank Device 12 Protector 13 Fixing tool 13a Clamping part 13b Magnet 13c Screw 13d Butterfly bolt 13e Plate 13f Fastener 14 Sheet 1 5 Water storage and delivery device 15a Tank body 15b Water 15c Cap 15d Internal tube 15f Pressure unit 15g Liquid delivery tube 15h Connection tube 15i Knob 16 Second protector 16a Second sheet 16b Band 16c Fastener 17 Protector 17a T-shaped plate 17b Butterfly Bolt 17c Seat 17d Fastener 18 Integrated protector 18a Second seat 18b Convex 18c Joint 18d Fastener 18e Fastener

Claims (5)

A water supply tank device that reduces dust scattering by supplying water to the rotary blade, dust scattered by the rotary blade covered with a grinder cover coming into contact with the object to be treated,
A water-absorbing body in contact with a side surface of the rotary blade;
A holding portion for holding the water absorbent;
A fixture that holds the holding portion and is fixed to the cover;
A tank having a cap for storing the water and being fixed to the cover;
A liquid feed section having one end located in the tank and the other end communicating with the water absorbent;
An air intake section that takes air into the tank and allows natural water flow to the liquid feeding section;
A water tank apparatus comprising: The said intake part is provided with the knob which adjusts the air intake amount of air, The water flow volume to the said liquid feeding part is adjusted by adjusting the air intake amount of the said air. Water tank equipment. The water tank apparatus according to claim 1 or 2, further comprising a protector that is suspended and fixed to a bottom portion of the cover or / and the main body of the grinder, and that applies a splash splashed by the rotary blade. A tank water supply type grinder, wherein the water supply tank device according to any one of claims 1 to 3 is mounted on a cover of the grinder. 5. The tank water supply grinder according to claim 4, comprising a forced water supply type water storage and liquid supply device, wherein the tank and the intake portion are excluded from the tank water supply type grinder, and the water storage and liquid supply device is provided in the liquid supply portion. The tank water supply type grinder is characterized in that liquid feeding from the water storage liquid feeding device is also possible by connecting a liquid feeding tube through which water is fed from.

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