CN215296390U

CN215296390U - Mechanical adjustable proportion liquid level meter

Info

Publication number: CN215296390U
Application number: CN202121570499.1U
Authority: CN
Inventors: 余杰; 程长林; 李正华; 熊凯
Original assignee: Hunan Junxin Environmental Co ltd
Current assignee: Hunan Junxin Environmental Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-12-24
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses an adjustable proportion level gauge of mechanical type, the mounting bracket comprises a mounting bracket, the scale, the assembly pulley, rope and floater, the assembly pulley includes at least one fixed pulley and at least one movable pulley, the fixed pulley is fixed on the mounting bracket, the stiff end of rope is fixed in the mounting bracket, on fixed pulley or the movable pulley, the free end of rope is walked around behind movable pulley and the fixed pulley and is linked to each other with the floater, it has a liquid level mark to hang below the assembly pulley, the centre of a circle of movable pulley and the focus of liquid level mark are located same vertical line and are located between two long limits of scale, liquid level mark is pressed close to and is located scale the place ahead. The utility model discloses a mechanical level gauge actual measurement size and scale proportion are adjustable, have realized reading directly perceived to high volume liquid level, can save the occupation space of scale, and operating personnel ascends a height the risk of reading when can avoiding measuring the wide-range liquid level again to the reading is accurate.

Description

Mechanical adjustable proportion liquid level meter

Technical Field

The utility model belongs to the technical field of the liquid level detection, concretely relates to adjustable proportion level gauge of mechanical type.

Background

The liquid level meter is frequently used in the life production, the variety of the liquid level meter is various, but the liquid level meter has respective advantages, disadvantages and applicability, and particularly in a landfill leachate regulating reservoir, the environment is complex, the liquid level meter is not suitable for an ultrasonic sensor, and the error is large; the underwater use of the regulating reservoir is a submersible pump lift pump, which is not suitable for a pressure liquid level meter and is easily interfered by the pump. In order to accurately measure the liquid level, the mechanical liquid level meter is still a good choice and can visually display the liquid level change in real time, but the existing mechanical liquid level meter also has certain limitations, for example, the length of a liquid level data scale is 1: 1 with the height of the liquid level, when the liquid level meter is used for detecting the liquid level of a tank, a well or a pool with the depth of more than 5 meters, the data scale is too long, the occupied space is not convenient to read, even the height is required to read the numerical value, and the potential safety hazard exists. Chinese patent CN210719338U discloses a height-adjustable's mechanical type level gauge, mainly drive a pair of perpendicular meshed bevel gear through scalable ball arm, fixed corner through the ball arm realizes the measurement height of certain within range, solved the ball arm and stretched out the bottom or because too long the problem of exceeding the installation face, the measurement of the dark liquid level of high volume has been solved to a certain extent, nevertheless need extension telescopic link during the measurement, when the environment in the high volume is complicated, the telescopic link can influence the degree of accuracy of level gauge. Therefore, the development of a mechanical liquid level meter with deep liquid level and convenient reading is still an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a liquid level change convenient to read the wide range, directly perceived, the error is little, the efficient adjustable proportion level gauge of mechanical type.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides an adjustable proportion level gauge of mechanical type, includes mounting bracket, scale, assembly pulley, rope and floater, the assembly pulley includes at least one fixed pulley and at least one movable pulley, the fixed pulley is fixed on the mounting bracket, the stiff end of rope is fixed in on mounting bracket, fixed pulley or the movable pulley, the free end of rope is walked around link to each other with the floater behind movable pulley and the fixed pulley, a liquid level indicator has been hung to the movable pulley below, the centre of a circle of movable pulley with the focus of liquid level indicator is located same vertical line and is located between two long limits of scale, the liquid level indicator is pressed close to and is located scale the place ahead.

Preferably, the ratio of the scale on the scale to the actual size is 1: n, where n is the number of segments of the rope connected to the movable pulley, and the mass M of the floating ball, the mass M1 of the liquid level indicator, and the mass M2 of the movable pulley satisfy the formula of (M1+ M2)/n, excluding friction. A plurality of fixed pulleys lean on first connecting piece fixed connection, and a plurality of movable pulleys lean on second connecting piece fixed connection, rope one end with the floater is connected, and the other end is fixed on mounting bracket, fixed pulley or movable pulley, can change connected mode as required: the n of the rope fixing end on the mounting frame or the fixed pulley is an even number, and the n of the rope fixing end on the movable pulley is an even number.

Preferably, the liquid level meter further comprises at least one positioning pulley, the positioning pulley is movably mounted on the mounting frame, and the free end of the rope bypasses the movable pulley and the fixed pulley in the pulley block and then bypasses the positioning pulley to be connected with the floating ball.

In the above mechanical adjustable proportional liquid level meter, preferably, the positioning pulley is slidably mounted on the mounting frame through a sliding groove and a fastening bolt nut.

The above mechanical adjustable proportion liquid level meter preferably further comprises an encoder, the encoder is fixed on the mounting frame and is coaxially connected with any fixed pulley or positioning pulley through a connecting piece, and the output end of the encoder is electrically connected with the input end of a display.

Preferably, in the mechanical adjustable proportional liquid level meter, the diameter of the movable pulley below the pulley block is larger than that of the movable pulley above the pulley block, and the diameter of the fixed pulley above the pulley block is larger than that of the fixed pulley below the pulley block.

In the above mechanical adjustable proportional liquid level meter, preferably, the fixed pulley around which the free end of the rope finally passes is located at the uppermost row of the pulley block and in front of or on both sides of the scale.

Preferably, the liquid level mark is a triangular iron weight, the bottom side of the triangular iron weight is smaller than the width of the scale, and the vertex of the triangular iron weight is vertically downward.

The aforesaid adjustable proportion level gauge of mechanical type, it is preferred, the mounting bracket includes diaphragm and pillar, pillar perpendicular to ground, the diaphragm is installed pillar upper portion, fixed pulley and encoder are installed respectively the positive and negative of diaphragm.

Preferably, the transverse plate comprises a top plate and a back plate, the long edges of the top plate and the back plate are spliced, the plate surfaces of the top plate and the back plate are perpendicular to each other, and the fixed pulley and the encoder are respectively arranged on the front surface and the back surface of the back plate.

Preferably, the mechanical adjustable proportional liquid level meter is characterized in that the scale is marked on the pillar by laser printing scales.

Preferably, the mechanical adjustable proportional liquid level meter is characterized in that the support is telescopic.

Preferably, the rope is a thin steel rope.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses the principle of assembly pulley has been utilized, the mechanical level gauge of actual measurement size and scale proportion adjustable has been designed, the number that can change the pulley according to actual demand comes the size of adjustment proportion, realized reading directly perceivedly to high volume liquid level, the occupation space of scale has been saved, the risk that operating personnel ascended a height when can avoid measuring the wide-range liquid level again, and the centre of a circle of movable pulley and the focus of liquid level mark lie in same vertical line and lie in between two long limits of scale, the liquid level mark is pressed close to and lies in scale the place ahead, it is more direct accurate to instruct, it is little influenced by the environment, can guarantee the accuracy of reading.

2. The utility model discloses an adjustable proportion level gauge of machinery passes through the encoder and turns into digital pulse signal transmission to display with fixed pulley or positioning pulley's rotatory displacement volume, has realized the remote function of reading numerical value in real time of level gauge.

Drawings

Fig. 1 is a schematic structural diagram of a mechanical adjustable ratio liquid level meter according to embodiment 1 of the present invention.

Fig. 2 is a cross-sectional view taken along line AA in fig. 1.

Fig. 3 is a schematic structural diagram of a mechanical adjustable ratio liquid level meter according to embodiment 2 of the present invention.

Fig. 4 is a schematic structural diagram of a mechanical adjustable ratio liquid level meter according to embodiment 3 of the present invention.

Fig. 5 is a schematic structural diagram of a mechanical adjustable ratio liquid level meter according to embodiment 4 of the present invention.

Illustration of the drawings:

1. a mounting frame; 11. a transverse plate; 111. a top plate; 112. a back plate; 12. a pillar; 2. a scale; 3. a fixed pulley; 31. a first fixed pulley; 32. a second fixed pulley; 33. positioning the pulley; 34. a first connecting member; 4. a movable pulley; 41. a first movable pulley; 42. a second movable pulley; 43. a second connecting member; 5. a floating ball; 6. a liquid level indicator; 7. an encoder; 8. a connecting member; 9. an output end; 10. a chute; 101. and fastening the bolt.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and drawings.

Example 1:

as shown in fig. 1 and 2, the utility model discloses an adjustable proportion level gauge of mechanical type, including mounting bracket 1, scale 2, assembly pulley, rope and floater 5, the assembly pulley is including first fixed pulley 31, first movable pulley 41 and second movable pulley 42 from top to bottom. First fixed pulley 31 is fixed on mounting bracket 1 and is located the scale 2 upper end, and first fixed pulley 31 one side is fixed with second fixed pulley 32, and first movable pulley 41 and second movable pulley 42 are connected with second connecting piece 43 side by side, and movable pulley 4 (be first movable pulley 41 and second movable pulley 42) hangs in front of scale 2 through the rope. A liquid level indicator 6 is hung below the second movable pulley 42, the liquid level indicator 6 is close to and located in front of the scale 2, and the circle center of the movable pulley 4 and the gravity center of the liquid level indicator 6 are located on the same vertical line and located between two long edges of the scale 2. The liquid level meter in this embodiment further includes a positioning pulley 33, the positioning pulley 33 is slidably mounted on the mounting frame 1 through the sliding groove 10 and the fastening bolt 101, and is located on one side of the second fixed pulley 32, opposite to the first fixed pulley 31, and the distance between the positioning pulley 33 and the second fixed pulley 32 can be adjusted in a sliding manner according to actual needs, so that the floating ball 5 can just hang down on the liquid level, and the liquid level indicator 6 and the scale 2 are located at positions convenient for reading. The fixed end of the rope is fixed on the shaft of the first fixed pulley 31, and the free end of the rope is connected with the floating ball 5 after passing through the first movable pulley 41, the first fixed pulley 31, the second movable pulley 42, the second fixed pulley 32 and the positioning pulley 33 in the pulley block in sequence.

In other embodiments, the positioning pulley 33 may not be used, and the floating ball 5 may directly drop to the liquid level after passing around the last fixed pulley in the pulley block, or the positioning pulley 33 may be replaced by a smooth ring or a support member, so as to pass around the free end of the rope and suspend the floating ball 5 at a position spaced apart from the scale 2.

When the device is used, the mounting frame 1 is mounted above the liquid level to be measured of a water pool or a water well, the floating ball 5 is placed on the liquid level, when the floating ball 5 goes up and down along with the change of the liquid level, the rope sequentially drives the positioning pulley 33, the second fixed pulley 32 and the first fixed pulley 31 to rotate in the sliding process, meanwhile, the first movable pulley 41, the second movable pulley 42 and the liquid level mark 6 are driven to move up and down, then the numerical value marked on the scale can be read according to the position of the liquid level mark 6, and the change of the liquid level can be visually displayed on site.

The movable pulley 4 is used in the embodiment, so that the scale 2 and the actual liquid level are adjustable in proportion, large-range liquid level change can be read visually, the shortened scale saves space, and reading is facilitated. Moreover, the center of circle of the movable pulley 4 and the center of gravity of the liquid level indicator 6 are located on the same vertical line and between two long edges of the scale 2, and the liquid level indicator 6 is close to and located in front of the scale 2, so that the indication is more direct and accurate.

In the present embodiment, the diameter of the first movable sheave 41 is smaller than the diameter of the second movable sheave 42. The mass M of the float, the mass M1 of the liquid level indicator and the mass M2 of the two movable pulleys satisfy the formula M ═ M1+ M2)/n, where n is the total number of segments of the rope connected to the two movable pulleys 4, the two movable pulleys 4 are fixedly connected by the second connecting member 43, one end of the rope is connected to the float 5, and the other end is fixedly connected to the fixed pulley on the top of the scale 2 (the connection manner can be changed as needed: n is an even number at the fixed end of the rope on the fixed pulley, n is an odd number at the movable pulley, the distance S traveled by the free end of the rope, i.e., the end connected to the float, is equal to nh, where h is the height traveled by the liquid level indicator 6, therefore, the ratio of the scale on the scale 2 to the actual size is 1: n, as in the mechanical liquid level indicator shown in fig. 1, the number of segments of the rope connected to the movable pulley 4 is equal to 4, the ratio of the scale to the actual size is 1: 4, if the liquid level change of 20 meters needs to be measured, only 5 meters of scales are needed, the number of the movable pulleys 4 is increased, and the shorter scales can be used for showing, so that the danger of the ascending reading of a mechanical liquid level meter with the actual size being 1: 1 of the scales in the prior art can be avoided, and the shortened scales 2 not only save space, but also facilitate the reading.

In this embodiment, the liquid level meter further includes an encoder 7, as shown in fig. 2, the encoder 7 is fixed on the mounting frame 1 and connected to the second fixed pulley 32 through a connecting member 8, and an output end 9 of the encoder 7 is electrically connected to an input end of a display. When the floating ball 5 goes up and down along with the change of the liquid level, the rope can drive the second fixed pulley 32 to rotate, and then the shaft of the encoder 7 is driven to rotate through the connecting piece 8, the encoder 7 converts the rotation displacement into a digital pulse signal, and the digital pulse signal is remotely transmitted to a specified point through a cable to display a numerical value, so that the liquid level change can be remotely monitored in real time, the error is small, and the efficiency is high.

In other embodiments, the encoder 7 may be coaxial with the first fixed pulley 31 or the positioning pulley 33.

In this embodiment, liquid level mark 6 weighs down for triangle-shaped iron, and triangle-shaped iron weighs down the base and is less than scale 2's width, and triangle-shaped iron weighs down the perpendicular downwards in summit, corresponds scale 2's position reading according to triangle-shaped iron weighs down the summit, and liquid level mark 6 has certain weight to be located in the middle of the scale, be difficult to the swing, indicate more fast stable.

In this embodiment, the mounting bracket 1 includes the horizontal plate 11 and the pillar 12, the pillar 12 is perpendicular to the ground, the horizontal plate 11 is installed on the pillar 12, the horizontal plate 11 includes the top plate 111 and the back plate 112, the long sides of the top plate 111 and the back plate 112 are spliced and the plate surfaces are perpendicular to each other, the fixed pulley 3 and the encoder 7 are installed on the front and back of the back plate 112 respectively, as shown in fig. 2.

In this embodiment, the scale 2 is marked on the pillar 12 by laser printing.

In this embodiment, the support 12 is retractable to facilitate storage and transportation.

In this embodiment, the ropes are thin steel ropes, which can reduce the friction force during sliding.

Example 2:

the mechanically adjustable proportional liquid level meter of the present embodiment is substantially the same as embodiment 1 except that the first fixed pulley 31 and the second fixed pulley 32 are installed at different positions.

The specific connection mode is as shown in fig. 3, the two fixed pulleys 3 are a first fixed pulley 31 and a second fixed pulley 32 from top to bottom, the first fixed pulley 31 is fixed on the mounting frame 1, and the second fixed pulley 32 is hung below the first fixed pulley 31 by a first connecting piece 34. The fixed end of the rope is fixed on the second fixed pulley 32, and the free end of the rope is connected with the floating ball 5 after sequentially passing around the first movable pulley 41, the second fixed pulley 32, the second movable pulley 42, the first fixed pulley 31 and the positioning pulley 33. In the mechanical liquid level meter of the present embodiment, the number of stages n of the rope connected to the movable sheave 4 is 4, and the ratio of the scale to the actual size is 1: 4. In this embodiment, the first fixed pulley 31 and the second fixed pulley 32 are vertically arranged, so that the whole mechanical liquid level meter is simpler and more compact in structure, and space is saved.

The diameter of the movable pulley on the lower side in the pulley block is larger than that of the movable pulley on the upper side, the diameter of the fixed pulley on the upper side is larger than that of the fixed pulley on the lower side, namely the diameter of the second movable pulley 42 is larger than that of the first movable pulley 41, the diameter of the first fixed pulley 31 is larger than that of the second fixed pulley 32, and the liquid level indicator 6 is hung below the pulley block.

In this embodiment, the distance between the float ball 5 and the scale 2 is adjusted by adjusting the installation distance between the positioning pulley 33 and the pulley block in a sliding manner.

Example 3:

the mechanical adjustable ratio liquid level meter of the present embodiment is basically the same as the embodiment 2, except that the liquid level meter of the present embodiment has a total of three pulleys, a positioning pulley 33, and a fixed pulley 3 and a movable pulley 4 which constitute a pulley block.

The specific connection mode is as shown in fig. 4, the fixed pulley 3 is fixed on the top end of the scale 2, the movable pulley 4 is suspended below the fixed pulley 3 through a rope, the fixed end of the rope is located on the fixed pulley 3, the free end of the rope bypasses the movable pulley 4 and the fixed pulley 3 and then bypasses a positioning pulley 33 arranged at the end part of the mounting frame 1 to be connected with the floating ball 5, and the liquid level indicator 6 is suspended below the movable pulley 4. In the mechanical liquid level meter of the embodiment, the number of the segments of the rope connected with the movable pulley 4 is 2, the ratio of the scales to the actual size is 1: 2, for example, only 5 meters of scales are needed for measuring the liquid level change with the depth of 10 meters, the number of the movable pulleys 4 in the pulley block is increased, and the measuring device can also be embodied by shorter scales.

Example 4:

the mechanical type adjustable ratio liquid level meter of this embodiment is substantially the same as embodiment 3 except that the fixed end of the rope is fixed to the mounting frame 1 at one side of the upper end of the scale 2 as shown in fig. 5, and the fixed pulley 3 is fixed to the mounting frame 1 at the other side of the scale 2 opposite to the fixed end of the rope, in a specific mounting position of the fixed pulley 3 and a way of winding the rope around the pulley. The free end of the rope rounds the movable pulley 4, the fixed pulley 3 and the positioning pulley 33 and then is connected with the floating ball 5, the movable pulley 4 and the liquid level indicator 6 below the movable pulley are suspended right in front of the scale 2 by two sections of ropes on two sides of the scale 2, the number n of the sections of the rope connected with the movable pulley 4 is 2, and the ratio of the scale to the actual size is 1: 2.

The above is only the preferred embodiment of the present invention, the protection scope of the present invention is not limited to the above-mentioned embodiments, and the above description describes that the technical features involved in the various embodiments of the present invention can be mutually combined as long as they do not constitute a conflict with each other, all belong to the technical solution under the idea of the present invention. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.

Claims

1. The utility model provides an adjustable proportion level gauge of mechanical type which characterized in that: including mounting bracket (1), scale (2), assembly pulley, rope and floater (5), the assembly pulley includes at least one fixed pulley (3) and at least one movable pulley (4), fixed pulley (3) are fixed on mounting bracket (1), the stiff end of rope is fixed in on mounting bracket (1), fixed pulley (3) or movable pulley (4), the free end of rope is walked around movable pulley (4) and fixed pulley (3) back link to each other with floater (5), a liquid level indicator (6) has been hung to movable pulley (4) below, the centre of a circle of movable pulley (4) with the focus of liquid level indicator (6) is located same vertical line and is located between two long limits of scale (2), liquid level indicator (6) are pressed close to and are located scale (2) the place ahead.

2. The mechanical adjustable ratio liquid level meter according to claim 1, wherein the ratio of the scale on the scale (2) to the actual size is 1: n, wherein n is the number of segments of the rope connected with the movable pulley (4), the mass M of the floating ball (5), the mass M1 of the liquid level indicator (6) and the mass M2 of the movable pulley (4) satisfy the formula M1+ M2)/n, n is an even number when the fixed end of the rope is fixed on the mounting frame (1) or the fixed pulley (3), and n is an odd number when the fixed end of the rope is fixed on the movable pulley (4), excluding friction.

3. The mechanically adjustable ratio liquid level gauge according to claim 1, wherein the liquid level gauge further comprises at least one positioning pulley (33), the positioning pulley (33) is movably mounted on the mounting frame (1), and the free end of the rope passes through the movable pulley (4) and the fixed pulley (3) in the pulley block and then passes through the positioning pulley (33) to be connected with the floating ball (5).

4. The mechanically adjustable ratio liquid level gauge according to claim 3, wherein the liquid level gauge further comprises an encoder (7), the encoder (7) is fixed on the mounting frame (1) and is coaxially connected with any fixed pulley (3) or positioning pulley (33) through a connecting piece (8), and an output end (9) of the encoder (7) is electrically connected with an input end of a display.

5. The mechanical adjustable ratio liquid level meter according to claim 1, wherein the diameter of the lower movable pulley (4) in the pulley block is larger than that of the upper movable pulley (4), and the diameter of the upper fixed pulley (3) is larger than that of the lower fixed pulley (3).

6. The mechanically adjustable ratio gauge according to claim 1, wherein the last passing fixed pulley (3) of the free end of the rope is located at the uppermost row of pulley blocks and in front of or on both sides of the scale (2).

7. The mechanical adjustable proportion liquid level meter according to claim 3, wherein the liquid level indicator (6) is a triangular iron weight, the base of the triangular iron weight is smaller than the width of the scale (2), and the vertex of the triangular iron weight is vertically downward;

or the positioning pulley (33) is slidably mounted on the mounting frame (1) through the sliding groove (10) and the fastening bolt (101).

8. The mechanical adjustable proportion liquid level meter of claim 4, wherein the mounting bracket (1) comprises a cross plate (11) and a support column (12), the support column (12) is perpendicular to the ground, the cross plate (11) is mounted on the upper portion of the support column (12), and the fixed pulley (3) and the encoder (7) are respectively mounted on the front and the back surfaces of the cross plate (11).

9. The mechanically adjustable proportional liquid level gauge according to claim 8, wherein said scale (2) is marked on said pillar (12) with laser-printed graduations; or, the strut (12) is telescopic.

10. The mechanical adjustable proportion liquid level gauge according to any one of claims 1 to 9, wherein the rope is a thin steel rope.