CN215726247U

CN215726247U - Water level mechanical detection device of civil air defense water tank

Info

Publication number: CN215726247U
Application number: CN202122130128.8U
Authority: CN
Inventors: 黄香玲; 杨晓伟; 王志伟
Original assignee: Handan Civil Air Defense Engineering Development Management Station Handan Civil Air Defense Engineering Quality Supervision And Management Station
Current assignee: Handan Civil Air Defense Engineering Development Management Station Handan Civil Air Defense Engineering Quality Supervision And Management Station
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-02-01
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses a mechanical water level detection device of a civil air defense water tank. The device comprises a floating ball structure and a sealing structure, wherein the floating ball structure is connected with a corner floating ball and a central floating ball through a connecting rod, and the top of the corner floating ball is connected with a water level display rod. The display hole of the sealing structure sealing the top plate of the water tank comprises a transparent pipe marked with opaque scale lines and a magnet at the top of the transparent pipe. The water level display rod is divided into an upper display rod and a lower display rod, an iron plate matched with the magnet is fixed at the top end of the upper display rod, the upper display rod and the lower display rod are connected through a spring small ball connecting device, a small ball of the device is placed between the pressing plate and the outer surface of the upper display rod, a spherical pit matched with the small ball is machined in the bottom of the inner surface of the pressing plate and the outer surface of the upper display rod, one end of the spring abuts against the end of the fastening screw, and the other end of the spring abuts against the outer surface of the pressing plate. The utility model does not fear cold weather, does not use electric power and improves the safety factor.

Description

Water level mechanical detection device of civil air defense water tank

Technical Field

The utility model is applied to the field of civil air defense of buildings, and relates to a device for measuring the water level of a civil air defense water tank by adopting a mechanical method.

Background

In the underground civil air defense engineering of buildings, the water tank is necessary civil air defense equipment. The water level display of the water tank usually adopts a transparent plastic pipe based on the principle of a communicating vessel, and the water level display has three obvious defects, namely, under the environment of insufficient underground light, the water level is not easy to observe because the water and the transparent plastic pipe have light transmittance; secondly, in extremely cold weather, freezing may occur, the transparent plastic pipe is frozen to cause water leakage, and serious accidents may occur when people do not frequently go to the underground; and thirdly, observing the water level, and opening a valve below the transparent plastic pipe. Patents 2012203249258 and 2020222090684 disclose that the device of measuring water tank water level does not adopt the transparent plastic tubing of linker, has saved the valve, does not fear severe cold weather, and the water level directly passes through the signal of telecommunication and shows, and it is convenient to observe, but its shortcoming needs the power consumption, and in wartime or emergency, the circular telegram of civil air defense engineering is the lower thing of a guarantee coefficient.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the utility model is as follows: the water level mechanical detection device of the civil air defense water tank does not use electric power, adopts a mechanical method to detect the water level of the water tank, and is not affected by extreme cold weather and power failure.

The technical scheme adopted by the utility model is as follows: the mechanical water level detecting device of the civil air defense water tank comprises a floating ball structure in the water tank and a sealing structure on a water tank top plate, wherein a water level display rod is fixedly connected with the center of the top surface of a corner floating ball of the floating ball structure, and the water level display rod comprises an upper display rod and a lower display rod which are connected through a spring small ball connecting device. An upper end ring is designed at the top of the lower display rod, and the inner ring surface of the upper end ring is matched with the outer surface of the upper display rod; the bottom of the upper display rod is designed with a lower end ring, and the outer ring surface of the lower end ring is matched with the inner surface of the lower display rod. The spring small ball connecting device is positioned in an annular cavity formed between the upper end ring, the lower end ring, the outer surface of the upper display rod and the inner surface of the lower display rod, the spring small ball connecting device comprises a screw, a spring, a pressing plate and a small ball, the small ball is placed between the pressing plate and the outer surface of the upper display rod, spherical pits matched with the small ball are machined in the inner surface of the pressing plate and the bottom of the outer surface of the upper display rod, the two spherical pits are opposite in position, and the centers of the two spherical pits are corresponding. The spring is a pressure spring or a pressing sheet, one end of the spring props against the end part of the fastening screw, and the other end of the spring props against the outer surface of the pressing plate.

The sealing structure is positioned at the corner of the water tank top plate and comprises a transparent pipe and a magnet, the magnet is fixedly connected to the top of the transparent pipe, and the transparent pipe covers a display hole formed in the corner of the water tank top plate. The height of the transparent tube corresponds to the length of the upper and lower display rods. And the top end of the upper display rod is fixedly connected with an iron plate matched with the magnet. In order to facilitate rapid water surface detection, opaque scale lines are marked on the transparent tube.

Further, the floating ball structure comprises a corner floating ball, a connecting rod, a central floating ball and a water level display rod; the corner floating balls are positioned at four corners of the square water tank and are in contact with two side walls of the water tank; the central floating ball is positioned in the center of the square water tank; and the corner floating ball and the center floating ball are fixedly connected with each other by adopting a connecting rod. In order to facilitate the descending of the floating ball structure, balance weights are placed in the corner floating balls and the central floating ball.

Further, for the convenience of rapid detection of the water surface, the upper display rod and the lower display rod are different in color.

The utility model has the beneficial effects that: the utility model does not need cold weather, does not use electric power, adopts mechanical principles such as magnetic force, springs and the like, controls the upper and lower display rods to descend orderly through the magnetic force, and controls the upper and lower display rods to ascend orderly through adjusting the pressure on the small ball by the springs. The utility model can work smoothly for a long time under extreme conditions, and improves the safety factor.

Drawings

FIG. 1 is a schematic top view of a floating ball structure according to the present invention;

FIG. 2 is a schematic view of the water tank in an anhydrous state;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic view of the water tank in a full state;

FIG. 5 is an enlarged view of the portion B of FIG. 4;

wherein: 1-water tank, 2-corner floating ball, 3-connecting rod, 4-central floating ball, 5-water level display rod, 51-lower display rod, 52-upper display rod, 6-iron plate, 7-display hole, 8-transparent tube, 9-magnet, 10-screw, 11-spring, 12-pressing plate, 13-small ball, 14-upper end ring and 15-lower end ring.

Detailed Description

The upper, lower and top and bottom are all according to the upper and lower position of the civil air defense water tank. The radial direction of the inner and outer pointing circles is that the direction pointing to the circle center is inner, and the direction back to the circle center is outer. The fixed connection described below may be a variety of connection methods such as bonding, welding, plugging, fastener connection, and combinations of different connection methods.

The water level mechanical detection device of the waterproof tank comprises a floating ball structure in the water tank and a sealing structure on a top plate of the water tank. The floating ball structure in the water tank is shown in figure 1 and comprises a corner floating ball 2, a connecting rod 3, a central floating ball 4 and a water level display rod 5. The civil air defense water tank is generally considered from the aspect of occupying space and is mostly of a square structure. The four corner floating balls 2 are respectively positioned at four corners of the square water tank, and each corner floating ball 2 is contacted with two side walls of the water tank 1 and is positioned by using the side walls of the water tank 1. The central floating ball 4 is positioned in the center of the square. Four corner floating balls 2 and a central floating ball 4 are fixedly connected with each other by connecting rods 3 to form a stable triangular structure. The center of the top surface of the four corner floating balls 2 is fixedly connected with a water level display rod 5.

The sealing structure on the top plate of the water tank is shown in figure 2, and figure 2 is a schematic view of the water tank in a water-free state. Four display holes 7 are formed at four corners of the top plate of the water tank 1. The transparent tube 8 is fixedly connected to the display hole 7, and the center of the transparent tube 8 is consistent with the center of the display hole 7. A permanent magnet 9 is fixedly connected to the top of the transparent tube 8. Therefore, a sealing structure is formed by the transparent tube 8 and the magnet 9, the display hole 7 is sealed, foreign matters such as dust, insects, rats and the like are prevented from entering the water tank, and the water quality is guaranteed. The center of the display hole 7 is consistent with that of the corner floating ball 2, so that the water level display rod 5 can smoothly enter the transparent pipe 8 when the water level rises.

The water level display rod 5 is constructed as shown in fig. 2 to 5, and the water level display rod 5 includes a plurality of components such as an upper display rod 52, a lower display rod 51, and a connecting means. The upper display rod 52 is sleeved in the lower display rod 51, and the lower display rod 51 is fixedly connected to the center of the arc-shaped top surface of the corner floating ball 2. The connection mode of the upper and lower display rods is shown in fig. 3, wherein an upper end ring 14 is designed at the top of the lower display rod 51, and a lower end ring 15 is designed at the bottom of the upper display rod 52. The inner ring surface of the upper ring 14 engages the outer surface of the upper display rod 52 and slides up and down the outer surface of the upper display rod 52. The outer ring surface of the lower end ring 15 is engaged with the inner surface of the lower display rod 51 to slide up and down along the inner surface of the lower display rod 51. As shown in fig. 2, an iron plate 6 is fixedly connected to the top end of the upper display rod 52.

Referring to fig. 3, an annular cavity is formed between the upper end ring 14, the lower end ring 15, the outer surface of the upper display rod 52 and the inner surface of the lower display rod 51, and 3-4 connecting devices shown in the figure are uniformly distributed in the cavity in the circumferential direction, wherein the connecting devices are spring ball connecting devices and comprise screws 10, springs 11, pressure plates 12 and balls 13. The small ball 13 is placed between the pressure plate 12 and the outer surface of the upper display rod 52, spherical pits matched with the small ball 13 are processed on the inner surface of the pressure plate 12 (the surface contacted with the small ball 13) and the bottom of the outer surface of the upper display rod 52, and the two spherical pits are opposite in position and corresponding in center. One end of the spring 11 is pressed against the end of the fastening screw 10, and the other end is pressed against the outer surface of the pressure plate 12. When the device is installed, the spring 11, the pressure plate 12 and the small ball 13 are sequentially placed into the annular cavity, the upper display rod 52 is inserted, and the screw 10 is screwed. By adjusting the screwing length of the screw 18, the compression amount of the spring 11 can be adjusted, thereby realizing the adjustment of the pressure applied to the small ball 13.

Usually, the height in the water tank is about 1.5 m, and the distance between the top plate of the water tank and the top plate of the building is at least more than 1.0 m. The effective working length of the upper display rod 52 and the lower display rod 51 is 700mm, and the effective height of the transparent tube 8 is about 700mm, which corresponds to the length of the upper and lower display rods.

When the water level of the civil air defense water tank is positioned on the overflow flat surface, as shown in the attached figure 4, the corner floating balls 2 float to the top along the inner walls of the two side surfaces of the water tank 1, and at the moment, the upper display rod and the lower display rod of the water level display rod 5 are contracted. As shown in fig. 5, the iron plate 6 at the top end of the upper display rod 52 is in contact with the magnet 9, and both are fixed by magnetic force. When the water level of the water tank is lowered, the corner floating ball 2 and the central floating ball 4 are lowered under the action of gravity to drive the water level display rod 5 to be lowered, and because the iron plate 6 at the top end of the upper display rod 52 is fixed with the magnet 9 in a magnetic manner, the lower display rod 51 has no magnetic action, the lower display rod 51 is lowered under the drive of the corner floating ball 2, and at the moment, the transparent pipe 8 is exposed out of the upper display rod 52. When the lower display rod 51 is lowered to the position shown in fig. 3, the ball 13 enters the spherical recess on the outer surface of the upper display rod 52 under the action of the spring 11, and only the upper display rod 52 is shown in the transparent tube 8. If the water level in the water tank is then lowered, the upper ring 14 of the lower display rod 51 transmits force to the lower ring 15 of the upper display rod 52 through the spring ball coupling device, thereby disengaging from the magnetic force at the top end of the upper display rod 52 and driving the upper display rod 52 to be lowered. When the water level in the tank is at the lower limit, as shown in fig. 2, the upper display rod 52 is completely lowered into the tank, and there is no display rod in the transparent pipe 8.

When water is filled into the water tank from the position shown in the attached drawing 2, the corner floating ball 2 floats upwards along the inner walls of the two side surfaces of the water tank 1 to drive the water level display rod 5 to float upwards, the two upper and lower display rods are connected by the spring small ball connecting device shown in the attached drawing 3, the lower display rod 51 drives the upper display rod 52 to ascend under the action of the spring small ball connecting device, the upper display rod 52 firstly extends out of the display hole 7, and the upper display rod 52 can be seen from the transparent pipe 8. When the top end of the upper display rod 52 is pressed against the magnet 9 along with the rise of the water level of the water tank, the spring 11 is compressed under the action of the small ball 13, the small ball 13 rolls out of the concave pit on the outer surface of the upper display rod 52, the lower display rod 51 continues to rise, extends out of the display hole 8, is sleeved in the upper display rod 52, and the lower display rod 51 can be seen from the transparent pipe 8.

The magnetic control type display device controls the upper display rod and the lower display rod to descend orderly through magnetic force, and controls the upper display rod and the lower display rod to ascend orderly through the spring ball device. In order to quickly determine the water level of the water tank, the positions of the upper and lower display rods visible in the transparent tube are distinguished, the upper and lower display rods can be made to be different in color, and meanwhile, opaque scale lines are marked on the transparent tube 8. The color of the display rod leaking from the transparent pipe 8 and the scale of the display rod relative to the transparent pipe can quickly judge the water level height of the civil air defense water tank.

The spring adopts pressure spring or preforming, because of the spring is in the surface of water tank always, in order to guarantee that the spring works smoothly for a long time, does not advise to adopt the carbon steel material, should adopt stainless steel material. Because the plastic resists the corrosion of water and steam and has lighter density, the corner floating ball, the central floating ball, the connecting rod, the display rod and the like are preferably made of plastic. In order to ensure that the floating ball can descend smoothly when the water level descends so as to offset the received magnetic force, counter weights are added in the corner floating ball and the central floating ball. The iron plates 6 and the magnets 9 are subjected to corrosion prevention treatment.

The water level mechanical detection device of the waterproof box of the user is not afraid of cold weather, and icing does not influence the water level mechanical detection device. The utility model does not use electric power, adopts mechanical principles such as magnetic force, spring and the like, and can work smoothly for a long time under the condition of extreme ends such as power failure and the like.

The utility model moves the transparent plastic pipe displayed by the water level of the communicating vessel from the side part of the water tank to the top part of the water tank, thereby effectively preventing the transparent plastic pipe from being damaged by manual misoperation or accidental events. In general, once a transparent plastic pipe for displaying the water level of the communicating vessel is damaged, the water level measurement cannot work, and a certain time is needed for purchasing and replacing spare parts.

Claims

1. The utility model provides a mechanical detection device of water level of people's air defense water tank which characterized in that: the water level display device comprises a floating ball structure in a water tank and a sealing structure on a top plate of the water tank, wherein the center of the top surface of a corner floating ball (2) of the floating ball structure is fixedly connected with a water level display rod (5), and the water level display rod (5) comprises an upper display rod (52) and a lower display rod (51) which are connected by a spring small ball connecting device; the top of the lower display rod (51) is designed with an upper end ring (14), the bottom of the upper display rod (52) is designed with a lower end ring (15), the inner ring surface of the upper end ring (14) is matched with the outer surface of the upper display rod (52), and the outer ring surface of the lower end ring (15) is matched with the inner surface of the lower display rod (51); the spring ball connecting device is positioned in an annular cavity formed between an upper end ring (14), a lower end ring (15), the outer surface of an upper display rod (52) and the inner surface of a lower display rod (51), and comprises a screw (10), a spring (11), a pressing plate (12) and a ball (13), wherein the ball (13) is placed between the pressing plate (12) and the outer surface of the upper display rod (52), spherical pits matched with the ball (13) are machined in the inner surface of the pressing plate (12) and the bottom of the outer surface of the upper display rod (52), and the two spherical pits are opposite in position; one end of the spring (11) is propped against the end part of the fastening screw (10), and the other end of the spring is propped against the outer surface of the pressing plate (12).

2. The mechanical water level detection device for the civil air defense water tank as claimed in claim 1, characterized in that: the sealing structure is positioned at the corner of the top plate of the water tank and comprises a transparent tube (8) and a magnet (9), the magnet (9) is fixedly connected to the top of the transparent tube (8), and the transparent tube (8) covers a display hole (7) formed in the corner of the top plate of the water tank; the height of the transparent tube (8) corresponds to the length of the upper and lower display rods; the top end of the upper display rod (52) is fixedly connected with an iron plate (6) matched with the magnet (9).

3. The mechanical water level detection device for the civil air defense water tank as claimed in claim 2, characterized in that: the transparent tube (8) is marked with opaque scale lines.

4. The mechanical water level detection device for the civil air defense water tank as claimed in claim 1, characterized in that: the spring (11) is a compression spring or a pressing sheet.

5. The mechanical water level detection device for the civil air defense water tank as claimed in claim 1, characterized in that: the floating ball structure comprises a corner floating ball (2), a connecting rod (3), a central floating ball (4) and a water level display rod (5); the corner floating balls (2) are positioned at four corners of the square water tank and are in contact with two side walls of the water tank; the central floating ball (4) is positioned in the center of the square water tank; the corner floating ball (2) and the central floating ball (4) are fixedly connected with each other by a connecting rod (3).

6. The mechanical water level detection device for the civil air defense water tank as claimed in claim 5, characterized in that: balance weights are placed in the corner floating ball (2) and the central floating ball (4).

7. The mechanical water level detection device for the civil air defense water tank as claimed in claim 1, characterized in that: the upper display rod (52) and the lower display rod (51) are different in color.