JPH0669723U - Level - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a level on the surrounding wall of the buoy chamber, which enables quick and accurate setting of the mark of the level line and the smooth floating movement of the buoy. A pair of buoy stop rings 30 are mounted in the interior thereof, a hollow buoy 40 is placed below the buoy stop ring, slidably accommodated therein, and both ends are opened to form a buoy chamber formed of a hollow tube. 50: a lower end of which is fixed to the top end of the buoyancy chamber, and a pipe joint 20 having an inner pipe portion 22; and: a lower end peripheral edge of the pipe joint apex peripherally bonded and fixed, and a water stop valve provided at the lower end of the guide rod 12. Reference numeral 17 denotes an airtight body 10 that adjustably moves along the inner peripheral wall of the pipe joint, and an impervious valve 60 that is fixed to the bottom end of the buoyancy chamber and has a connection end 61 at the other end. : Connect the connecting ends of the construction to both ends of a plastic tube 70 filled with liquid of appropriate length inside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a spirit level.

[0002]

[Prior art]

 Conventionally, there have been automatic levelers and theodolites as the instruments used for level measurement, but since they are expensive and highly accurate, they are carried with caution so that they do not collide with other objects. In addition, since the machine itself has a relatively large volume and it must be handled by a person who has specialized knowledge in handling it, people other than specialized personnel, for example, may not For setting level lines, erection of framing, brick laying work, tiling, etc., signboard wall mounting work in advertising work, large machine tools, hoisting machines, self-propelled conveyors, etc. It is indispensable for the workers engaged in the foundation work to have an accurate level line setting device as an alternative, and therefore the applicant of the present invention is 199 Received a year Taiwan utility model rights. No. 158,371, but the result of extensive further research not come Soredakenia, does not lead point, such as those mentioned then has been discovered. That is, the utility model “level line setting device” is such that a cock plug having a plurality of pores and air passages is screwed to the upper end of a cylindrical buoy chamber having a buoy inside the hollow, and the air passage is A gasket is provided on the upper end face, and an opening / closing means for moving the operation inside the hollow of the cock stopper is attached to the upper end of the cock stopper. By operating the means, the gasket can be brought into contact with and blocked from the air passage, or can be released by opening it, to allow the air in the hose pipe to circulate, to prevent the water in the pipe from flowing out, and to prevent the dust inside the pipe. Although it is designed to prevent the intrusion into, there are the following drawbacks.

(1) The buoy chamber has a “cylindrical shape”, and when the level line is marked on the work wall surface, the buoy chamber and the work wall surface are in contact with each other as shown in FIG. 4 (B). The brush must be inserted in the narrow space, which is not easy to insert and affects the accuracy of the position of the marked level line.

(2) The floating of the buoy in the buoy chamber is carried out because the gap formed by the water film existing between the buoy peripheral wall and the buoy chamber inner wall makes a lubricating action. If left after use, some liquid may flow over the buoy by lying down, and when used again, the liquid that has flowed out above the buoy should be returned to below the buoy. If you rely on it, it will be slow, and if you do not shake it because it traps air bubbles, the liquid that has flowed out of the buoy will not flow back quickly.

(3) If the device is left in the air without using the conventional level line setting device, the airtightness of the structure is not perfect, and there is a risk that sand dust may enter from the pores and adhere to the peripheral wall of the buoy chamber. As the buoy slides between the buoy and the inner circumference of the buoy via a water film, a congestion phenomenon occurs and the sliding is not smooth, and errors are likely to occur unless handled carefully.

(4) Furthermore, since a cock device for stopping water is not provided in the conventional level line setting, it is difficult for air bubbles to intrude anywhere in the plastic water pipe to control it, and therefore, before use. Accurate measurement of the water level is not possible unless the bubbles are expelled from the water pipe to the buoy beforehand. However, finding and expelling air bubbles in a tube wound in a long loop is a very complicated and time-consuming task.

[0007]

[Problems to be solved by the device]

 In view of the problems of the above-mentioned conventional level line setting device, the present invention can form a part of the peripheral wall of the buoyancy chamber in a flat surface so that it can be easily brought into close contact with the work wall surface to quickly and accurately mark the level line. It is an object of the present invention to provide a spirit level that does not allow dust to enter the buoy chamber and prevents bubbles from entering the water pipe.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a pair of buoy stop rings mounted inside thereof, and a hollow buoy whose cross-section is semicircular or arcuate is placed below the buoy stop rings to allow liquid or air to flow. A buoy chamber which is slidably accommodated so that it can be distributed and is formed of a transparent hollow tubular body whose both ends are open and whose cross section is semicircular or bow-shaped: The lower end of which is fixed to the top end of each of the above buoy chambers. , A pipe joint having a slightly contracted inner pipe portion inside its top end: and a water pipe attached to the lower end of the guide rod at the center of the pipe joint by bonding and fixing the lower end periphery to each of the pipe joint top end periphery. A stop valve includes an airtight body that slidably and slidably moves along the inner peripheral wall of the pipe joint: a top end thereof is fixed to each bottom end of the buoy chambers, and a blocking end is formed at the other end. With a water valve: a plast filled with liquid at each of the above-mentioned connection ends. Respectively connected to the click tube ends configured to measure installing the same water level line of a predetermined distance between each local point.

And, the airtight body, the guide rod is inserted in the central portion of the airtight body, and a cap having an internal thread on the inner surface of the peripheral wall at an appropriate distance from the guide rod: A large number of through holes are provided, and a male screw is threaded on the upper peripheral surface to be screwed into the female thread of the cap, and a plurality of holes are provided between the inner race and the outer race having the through hole at the center. A ventilation pipe shaft that forms a ventilation hole and connects the other end to the pipe joint: A coil spring is circumferentially attached to the upper end of the guide rod, and a ring is inserted in the through hole and the middle peripheral wall of the ventilation pipe shaft in order. It is inserted into the through hole of the separation prevention sleeve provided with a groove, and a C-shaped fitting ring is attached to the lower end thereof, and a water stop valve having an annular groove on the outer peripheral wall is fitted into the ring groove. An airtight structure is formed by inserting and mounting a water stop valve into the pipe joint; The buoy is fitted with an outer ring that fits vertically along the inner wall of the buoy chamber and a tapered cone that extends vertically toward both edges of the outer peripheral wall of the hollow interior of the buoy. It is formed with connected hollow cones, and tapered edges sloping toward the inner peripheral wall are provided at the upper and lower ends of the outer ring to facilitate the introduction and distribution of air bubbles, and at the bottom end of the hollow cone, a cone is also formed. Similarly, a tip is formed to allow the bubbles to be easily introduced and flowed, and a spherical edge is formed on the top of the hollow cone to be fitted into a flexible reed type bonding port formed on the bottom of the buoy prevention ring. Further, the outer ring and the hollow cone are connected by a plurality of ribs, and a flow path is formed between the outer ring and the hollow cone so that air and water can quickly flow. The above-mentioned impermeability valve is installed in a cavity on the top end face of which water is provided with both water flow holes vertically opposed to each other. And: a hollow annular outer sleeve that is placed in the water stop chamber and has both flowing water holes facing the peripheral wall, and forms a convex peripheral edge on the peripheral surface of the water flowing hole; A hollow cylinder part is provided which has a scooping piece and an annular edge, and has a slightly smaller diameter bored water flow hole facing the peripheral wall at the bottom, and the inner peripheral surface of both water flow holes is provided with a recess corresponding to the convex edge. A water stop cover which forms a peripheral edge and further has vertical streaks formed on the inner peripheral surface of the hollow cylinder: A recess groove groove that is placed on the bottom of the water stop cover and that corresponds to the vertical streaks on one side of the outer peripheral wall. , And an inner sleeve having perforated water holes facing the peripheral wall: an O-ring is fitted to the ring edge of the rotary cutting piece of the water stop cover, and the cover ring is ultrasonically and closely joined. It is more preferable to configure the above.

[0010]

[Action]

 Since the present invention configured as described above has the flat side wall formed in the transparent buoyancy chamber, if the flat side wall is brought into contact with the work wall surface, the contact angle formed between the two becomes large. , Therefore, the mark on the level line is fast. Also, since two flow paths are formed between the outer ring of the buoy and the hollow cone, when it is left unused after use, the air and liquid flow quickly, and an airtight body is provided. Since the air passage can be sealed when not in use, sand dust does not enter the buoy chamber in any condition, so the sliding movement of the buoy in the buoy chamber does not become jammed, and an impervious valve is installed. Therefore, if the cutoff valve is shut off, the liquid level and the flow of air will remain only in the buoyancy chamber.Therefore, opening the cutoff valve will cause rapid fusion with the water level in the plastic pipe. The time required can be significantly reduced. Furthermore, since the buoy stop ring is provided, the buoy raised according to the water level abuts and engages with the spigot-shaped adhesive port at the bottom end of the buoy stop ring to prevent water from overflowing. On the other hand, since the buoy chamber is molded to “straightness” and the semicircular or bow-shaped transparent tube is molded by a high-level injection technology so as to have a convex lens function, the level line position in the tube can be easily found. In addition, the accuracy of the whole equipment is improved.

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description of the embodiments with reference to the drawings.

[0012]

【Example】

 First, as shown in FIGS. 1 and 2, the spirit level of the present invention mainly comprises an airtight body 10, a pipe joint 20, a buoy stop ring 30, a buoy 40, a buoy chamber 50, and an impervious valve 60. ing.

The airtight body 10 is integrally formed with a stainless steel guide rod 12 extending downward in a central portion, a recessed chamber 110 is provided on a top end surface of the airtight body 10, and a lid member 111 made of a resin material is fitted therein. Meanwhile, an internal thread 112 is threaded on the inner surface of the outer peripheral wall that is separated from the guide rod 12 by an appropriate gap, and a slightly smaller small diameter portion 120 is formed at the lower end of the guide rod 12, and a fastening groove 112 is formed at the tip. A cap 11 made of a soft resin material, and two coil springs 131 attached to the upper and lower ends of the cap 11 to wind the guide rod 12 around the cap 11. As shown in FIG. An inner race 141 having a through hole 147 having a relatively large hole diameter, a male screw 145 is threaded on the upper end peripheral surface thereof and screwed into the female screw 112 of the cap 11, and an inner race 141 having a through hole 140 at the center thereof. And the outer race 142 with three ribs 14 3 To form three vent holes 144, and the inner race 141 has an edge to hold the lower end of the coil spring 13 in contact therewith, and the other end is formed of a soft resin material which is connected to the pipe joint 20 described below. The guide rod 12 is provided with a through hole 140 for the ventilation pipe shaft 14 and a middle peripheral wall ring groove 151, and a through hole 150 for a detachment prevention sleeve 15 formed of a resin material. After being inserted into the guide rod 12, a C-shaped fitting ring 16 is attached to the fixing groove 121 at the tip of the guide rod 12 to prevent the ventilation pipe shaft 14 and the separation preventing sleeve 15 from separating, and FIG. As shown, a water stop valve 17 having a hole 170 at one end and the periphery of the hole fitted in the ring groove 151 of the separation preventing sleeve 15 is provided with an annular groove 171 on the outer peripheral wall thereof, and both ends of the annular groove 171 are provided with Each raised edge 1 2 is formed, and the lower end of the by converging the cone shape 173, the water stop valve 17 which is engaged with the rod 12 the lower end guiding is to assume a closed state by the inner circumferential wall 23 below fitting 20. That is, the outer peripheral wall edge is in solid contact with the pipe joint 20, and the tip of the guide rod 12 can be slidably slidably moved to the inner peripheral wall 23 of the pipe joint 20 by a predetermined distance, and the air can be transferred to the airtight body 10. The connection gap with the pipe joint 20 can be adjusted so that it can escape.

As shown in FIG. 2, the pipe joint 20 is formed of a soft resin material, one end of which is formed in the pipe portion 21 and is fitted to one end of the ventilation pipe shaft 14 and fixedly bonded with an adhesive. The inside of the pipe portion 21 is provided with an inner pipe portion 22 having a slightly reduced hole diameter in the opposite direction, an inner peripheral wall 23 is formed in the inner pipe portion 22, and the other end of the pipe joint 20 has a flat side wall. The flat tube portion 24 is formed and fitted and adhered to the top end of the buoyancy chamber 50 described below.

As shown in FIG. 2, the buoy stop ring 30 is molded in a flexible silica resin material and is installed in the buoy chamber 50 described below. The top end surface of the flow hole 31 is formed into a recessed tapered surface 32 so that the liquid spouted from the flow hole 31 can slide around the recessed tapered surface 32 and flow around the bottom end edge of the flow hole 31 in the shape of a flexible spoon. A bonding port 33 is provided.

As shown in FIG. 2, the buoy 40 is also made of a soft resin material, and a color ring is marked on the outer peripheral wall of the buoy to reflect it outside the tube. It becomes easier to mark the reflection level line. Then, in order to be accommodated in the buoy chamber 50 described below and to be able to float and move, it is formed by an outer ring 41 and a hollow cone 45, and both end edges of the outer ring 41 are tapered edge 42 which inclines and contracts from the outside to the inside. Then, the outflow of bubbles is measured, and the lower end of the hollow cone 45 is formed into a conical point 46, and the outflow of bubbles is similarly measured. Further, the top end of the hollow cone 45 is formed with a spherical edge 47 so that it can be engaged with the adhesive port 33 at the bottom end of the buoyancy prevention ring 30, and the outer ring 41 and the hollow cone 45 are formed into two pieces. By connecting with the ribs 48, two flow paths 49 are formed between the outer ring 41 and the hollow cone 45 so that the gas / liquid can flow out or flow quickly.

The buoy chamber 50 is a transparent flat tube that is molded from a soft resin material and has a flat side wall and has a hollow cross section of a semicircle or an arc shape. A fitting edge 51 having a hole diameter is formed.

The blocking valve 60 is for adjusting and controlling the opening and closing of the water flow hole in the pipe. One end of the blocking valve 60 is fitted and fixed to the bottom end of the buoyancy chamber 50, and the other end is formed as a connection end 61. The outer pipe portion 611 is screwed onto the connecting end portion 61. The water blocking valve 60 is provided with a water stop chamber 62 having a hollow top end and having both water flow openings 620 in a vertical direction: the water stop chamber 62 is installed in the water stop chamber 62, and a pair of water flow holes 630 are provided on the peripheral wall. An outer sleeve 63 having a raised peripheral edge 6301 formed on the peripheral surface of the water flow outlet 630; and an end portion provided with a rotary cutting piece 641 and a ring edge 642, and the other end. Is formed in a cylindrical portion having a slightly smaller diameter, and a pair of flowing water ports 643 facing the peripheral wall of the cylindrical portion are provided, and recesses are formed in the peripheral edges of both flowing water ports 643 adjacent to the outer peripheral wall of the cylindrical portion of both flowing water ports 643. A water stop cover 64 having a peripheral edge 6431 and axial longitudinal ribs (not shown) provided on the inner peripheral surface of the end of the cylindrical portion, and: a groove groove corresponding to the vertical rib on the outer peripheral wall thereof. 650 is provided in the cylindrical portion of the water stop cover 64. And an O-ring 66 fitted to the outer circumference of the rotating threshing piece 641 of the water stop cover 64, and an inner sleeve 65 attached to the peripheral wall with a pair of water flow openings 651 corresponding to the water flow openings 643. And a cover ring 67 that is tightly fixed by ultrasonic treatment.

When the above respective configurations are combined, first, the fitting edge 51 at the bottom end of the buoy chamber 50 is fitted to the water blocking valve 60 and fixed by adhesion with an industrial adhesive, and then the buoy 40 Was placed in the buoyancy chamber 50, a buoyancy prevention ring 30 made of a soft silica resin material was attached to an appropriate position at the upper end of the buoyancy chamber 50, and the airtight body 10 was fixedly attached to one end. The top end of the buoyancy chamber 50 may be fitted and fixed to the other end of the pipe joint 20, and finally, the connecting end edges 61 in the outer pipe portions 611 of the above-mentioned two configurations are respectively provided, and the plastic pipe 70 filled with the liquid therein is provided. The level line is set by connecting both ends and measuring the level at each position separated by a predetermined distance.

As can be seen from the above description, the method of using the airtight body 10 of the present invention is a completely hermetic type, and as shown in FIG. 3, when the cap 11 is twisted open from the ventilation pipe shaft 14, The cap 11 is pushed up by the coil spring 13 to separate from the end of the male screw 145 of the ventilation pipe shaft 14, and the air moves in the direction of the arrow in the drawing to the ventilation hole 144 of the ventilation pipe shaft 14 and the end of the cap 11. The vent pipe shaft 14 escapes from the gap formed with the edge of the vent pipe shaft 14. On the other hand, in the present invention, after the cap 11 is twisted open, the separation preventing sleeve 15 provided at the lower end of the guide rod 12 is The vent pipe shaft 14 is prevented from coming into contact with the periphery of the inner race 141 and prevented from coming off.

Finally, comparing the spirit level of the present invention with the conventional one, there are the following advantages.

(1) FIGS. 4 (A) and 4 (B) are mark status display diagrams of respective level lines in this device and the conventional level line setting device. As shown in the figure, since the conventional buoy chamber has a cylindrical shape, the space on the horizontal plane formed by the contact between the buoy chamber and the work wall surface is relatively small, and the writing tool is deeply in contact with the work wall surface. It is not easy to insert at a point, and if the line of sight is accompanied, it will be obstructed and the accuracy of the marked waterline will be affected. On the contrary, since the buoyancy chamber 50 of the present invention is provided with the flat side wall, when the flat side wall is brought into contact with the work wall surface, the contact angle formed by both is large as shown in FIG. Since the level line is marked in the open horizontal space, the operation is quick and the accuracy is good.

(2) When used after being used again after being used, since the Japanese distribution path 49 is formed between the outer ring 41 of the buoy 40 of the present invention and the hollow cone 45,・ The liquid and liquid can be swirled quickly, and air and liquid are not swirled slowly as in the past, relying only on the gap of the water film formed between the buoy surface and the buoy chamber inner surface. Moreover, it is not necessary to constantly hold the buoyancy chamber in the hand and shake it to circulate the liquid above the buoy.

(3) Since the present invention is provided with the airtight body 10, the pores are closed even when the use is stopped, and the sand dust does not enter the buoyancy chamber 50 through the pores even if it is left in any state. The dust does not adhere to the inner wall of the buoy and the sliding movement of the buoy does not become congested.

(4) Since the water blocking valve 60 is provided, when the water blocking valve 60 is closed, the flow of liquid and air remains only in the buoyancy chamber, and therefore, when the water blocking valve 60 is opened, it floats. The liquid in the standard chamber can be quickly joined to the liquid in the closed plastic tube 70.

(5) Since the buoy stop ring 30 is provided as described above, during measurement, when the buoy chamber 50 at either end of the plastic tube 70 comes into contact with the work wall surface at a height that is too low, Since the spherical edge 47 at the top end of the buoy 40 rises and is quickly engaged with the coupling contact port 33 at the bottom end of the buoy stop ring 30, there is no risk of water in the pipe overflowing.

(6) The buoyancy chamber 50 of the present invention is formed to have "straightness", and the transparent tube curved in the shape of an arc has a convex lens function, so that the level line marked on the surface of the buoyancy can be easily performed. As you can find out, the level line survey setting is fast.

[0028]

[Effect of device]

 According to the present invention configured as described above, since the flat side wall is formed in the transparent buoyancy chamber, if the flat side wall is brought into contact with the work wall surface, the contact angle formed between the two becomes large, and therefore, The level line markings are fast and accurate. Also, since two flow paths are formed between the outer ring of the buoy and the hollow cone, when it is used again after being used, air and liquid are swirled quickly, and an airtight body is provided. Since the ventilation path can be sealed when not in use, sand dust does not enter the buoy chamber in any condition, so the sliding movement of the buoy in the buoy chamber does not become jammed, and an impervious valve is installed. Therefore, if the cutoff valve is shut off, the liquid level and the flow of air will remain only in the buoyancy chamber.Therefore, opening the cutoff valve will cause rapid fusion with the water level in the plastic pipe. Can be significantly shortened. Further, since the buoy stop ring is provided, the buoy raised according to the water level abuts and engages with the spout-shaped adhesive port at the bottom end of the buoy stop ring to prevent overflow of water. On the other hand, since the buoy chamber is molded to "straightness" and the semicircular or arc-shaped transparent tube is molded by a high-level injection technology so as to have a convex lens function, the level line position in the tube can be easily found. At the same time, the accuracy of the overall equipment improves.

[Brief description of drawings]

FIG. 1 is an exploded view of an embodiment of the present invention.

FIG. 2 is an assembly sectional view of the embodiment.

FIG. 3 is a view showing an air escape state in the embodiment.

FIG. 4 is a comparative display diagram of a level line mark situation in the present invention and a conventional level line setting device.

[Explanation of symbols]

 10 Airtight body 11 Cap 112 Female screw 12 Guide rod 13 Coil spring 14 Vent pipe axis 140 Penetration hole 141 Inner race 143 Rib muscle 144 Vent hole 145 Male screw 146 Convex edge 147 Through hole 15 Disengagement prevention sleeve 150 Disassembly prevention sleeve through hole 151 Ring Groove 16 Fitting Ring 17 Water Stop Valve 171 Annular Groove 20 Pipe Joint 22 Inner Pipe Part 30 Flotation Blocking Ring 33 Bonding Port 40 Flotation 41 Outer Ring 42 Tapered Edge 45 Hollow Cone 46 Conical Point 47 Spherical Edge 48 Muscle rib 49 Flow path 50 Flotation chamber 60 Impervious valve 61 Connection end 62 Water stop chamber 620 Water stop chamber water outlet 63 Outer sleeve 630 Outer sleeve water outlet 6301 Convex rim 64 Water stop cover 641 Rotating splint 642 Ring edge 643 Water outlet of water stop cover 6431 Recessed peripheral edge 65 Inner Sleeve 650 Recessed Groove 651 Inner Sleeve Flow Port 66 O-ring 67 Cover Ring 70 Plastic Tube

Claims (4)

[Scope of utility model registration request] 1. A buoy stop ring (30) is mounted in a pair thereof, and a hollow buoy (40) having a semicircular or arcuate cross section is placed below the buoy stop ring (30) to form a liquid. Alternatively, a buoy chamber (50) which is slidably accommodated so that air can be circulated and is formed of a transparent hollow tube body whose both ends are open and whose cross section is semicircular or bow-shaped: A pipe joint (20) fixed to the top end of the chamber (50) and provided with an inner pipe part (22) having a slightly reduced diameter inside the top end.
And: A water stop valve (17) whose lower end peripheral edge is adhered and fixed to the top end peripheral edge of each of the pipe joints (20) and which is attached to the lower end of the guide rod (12) provided at the center of the pipe joint (20) so that the pipe joints can be adjusted. (20) Airtight body that slides airtightly along the inner peripheral wall (1
0) and: a water blocking valve (60) having its top end fixed to the bottom end of each of the buoyancy chambers (50) and forming a connection end (61) at the other end: each of the above connections A spirit level in which the end portion (61) is connected to both ends of a plastic tube (70) filled with a liquid, and the same level line at each point separated by a predetermined distance is measured and installed. 2. The airtight body (10), the guide rod (12) is inserted in the center thereof, and a female screw (112) is screwed on the inner surface of the peripheral wall at an appropriate distance from the guide rod (12). An engraved cap (11): a through hole (147) having a relatively large hole diameter is provided at the center of the upper end of the cap (11), and a male screw (14) is provided on the peripheral surface of the upper end.
5) is screwed into the female screw (11) of the cap (11).
A plurality of ventilation holes (144) are formed between an inner race (11) having a through hole (140) at the center and an outer race (142), and the other end is formed into the pipe described above. A ventilation pipe shaft (14) connected to the joint (20): A coil spring (13) is circumferentially attached to the upper end portion of the guide rod (12), and the through hole (140) of the ventilation pipe shaft (14) in order. Also, a middle portion of the outer peripheral wall is inserted into the through hole (150) of the separation prevention sleeve (15) having the ring groove (151), and a C-shaped fitting ring (16) is attached to the lower end thereof to form an annular ring on the outer peripheral wall. A water stop valve (17) provided with a groove (171) is fitted into the ring groove (151), and the water stop valve (17) is connected to the pipe joint (20).
The spirit level according to claim 1, wherein an airtight structure is formed by inserting and fitting the level inside. 3. The buoy (40) is installed in the buoy chamber (5).
0) Outer ring (4
1) and a hollow cone (45) in which both ends of the outer peripheral wall inside the hollow are connected vertically with a tapered cone toward the central portion, and the outer ring (41) Tapered edges (42) inclined toward the inner peripheral wall are provided at the upper and lower ends to facilitate the introduction and circulation of air bubbles, and at the bottom end of the hollow cone (45), a cone tip (46) is formed. Similarly, air bubbles are easily introduced and flowed, and a spherical edge (47) is formed on the top end of the hollow cone (45), and the buoy stop ring (3) is formed.
0) The flexible ring-shaped adhesive opening (33) formed at the bottom end is fitted and joined, and the outer ring (41) and the hollow cone (45) are connected by a plurality of ribs (48). And a flow path (49) between the outer ring (41) and the hollow cone (45).
The leveling device according to claim 1, wherein the level is formed so that air and water can be swirled quickly. 4. A water stop chamber (62) in which the water blocking valve (60) is provided with two water flow holes (620) vertically opposed to each other in a cavity of a top end surface thereof: the water stop chamber (62) It is placed inside and drills both water flow holes (630) facing the peripheral wall,
A hollow ring-shaped outer sleeve (63) forming a raised peripheral edge (6301) on the peripheral surface of the water flow hole (630); and a rotary cutting piece (641) and a ring edge (642) on the top end surface thereof. ,
A water hole (64
3) is provided with a hollow cylindrical portion, and both the water flow holes (64
3) A water stop cover (64) in which a concave peripheral edge (6431) corresponding to the raised peripheral edge (6301) is formed on the inner peripheral surface, and a vertical streak is formed on the inner peripheral surface of the hollow cylinder at the bottom: An inner sleeve (65) which is placed on the bottom of the stop cover (64), is provided with a groove groove (650) corresponding to the vertical line on one side of the outer peripheral wall, and has a water flow hole (651) facing the peripheral wall. And the O-ring (6) on the ring edge (642) of the rotary cutting piece (641) of the water stop cover (64).
6. The electronic level according to claim 1, wherein 6) is fitted and the cover ring (67) is ultrasonically and closely bonded.