Top-mounted magnetic turning plate liquid level meter

Abstract

The utility model relates to the technical field of liquid level measurement, in particular to a top-mounted magnetic turning plate liquid level meter which comprises a connecting pipe fixedly installed on the upper side of a tank body, an installation pipe is connected to the connecting pipe in an inserted mode, a shell is fixedly connected to the top end of the installation pipe, and guide wheels are rotationally installed on the two sides of the upper portion in the shell. And a transmission shaft is rotationally mounted below one side in the shell. According to the top-mounted magnetic flap liquid level meter, the measuring steel belt is driven by the floater along with the change of the liquid level, and infinitesimal displacement is amplified into clear scale indication of the pointer on the low-position indicating dial through the guide wheel and the gear reduction system. The constant tension provided by the coil spring ensures the instantaneity and tracking precision of system response. The whole device does not need external energy, is simple and reliable in structure and low in manufacturing cost, is particularly suitable for large storage tanks and other towering equipment, and reliably transmits the liquid level change at a high position to a low position which is convenient to observe for display.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid level measurement technical field, concretely to a top -loading type magnetic flap liquid level meter. BACKGROUND

[0002] In the industrial fields such as petroleum chemical industry, pharmacy, food processing, environmental protection water treatment, it is often necessary to measure and monitor the interface liquid level of two kinds of immiscible and different density liquids in storage tanks, reaction kettles or separation vessels.

[0003] The authorized publication number CN221803053U, a kind of simple magnetic flap remote interface liquid level meter and simple magnetic flap interface liquid level meter of Chinese patent publication, the interface liquid level meter includes sieve hole float, float and magnetic flap display piece. Among them, sieve hole float is placed in equipment, and is fixedly connected with equipment through equipment flange piece;Magnetic flap display piece is placed outside equipment, and is fixedly connected with equipment through magnetic flap flange piece;And equipment flange piece and magnetic flap flange piece are fixedly connected;Sieve hole float is provided with sieve hole;Float is placed in sieve hole float, and is connected with the magnetic float in magnetic flap display piece through connecting piece. The setting of sieve hole float is convenient for liquid medium in equipment to enter the inside of float through the side of sieve hole float, so that the liquid medium in and outside sieve hole float flows mutually, which can truly reflect the actual position of interface, provide safe and reliable data support for production. In addition, the device is simple in structure, easy to install, small in investment and wide in applicability.

[0004] For the related technology in the above, there are some deficiencies, in actual use process, the interface liquid level meter is suitable for smaller tank or kettle of storage tank or kettle, when being applied on large storage tank or reaction kettle and other high-rise equipment, its on-site indication function has observation limitation. Since the height of equipment is significantly increased, the operator is difficult to clearly identify the accurate junction of red and white flip column on display panel on ground or conventional platform, leading to difficult liquid level manual reading, easy to introduce error. This affects the efficiency of on-site inspection and reading reliability, therefore, it is necessary to provide a kind of top -loading type magnetic flap liquid level meter to solve the above technical problems. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of top -loading type magnetic flap liquid level meter, solves the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of top -loading type magnetic flap liquid level meter, it includes:

[0008] The connecting pipe is fixedly installed on the upper side of the tank body, a mounting pipe is inserted on the connecting pipe, a shell is fixedly connected to the top end of the mounting pipe, guide wheels are rotatably installed on both sides of the upper portion of the inside of the shell, a transmission shaft is rotatably installed on the lower portion of one side of the inside of the shell, a transmission wheel is fixedly installed on the outer wall of the transmission shaft, and a constant assembly is arranged in the lower portion of the inside of the shell.

[0009] The constant assembly comprises a winding shaft rotatably installed in the lower portion of the inside of the shell, a steel belt wheel fixedly installed on the outer wall of the winding shaft, a coil spring arranged on the front side of the outer wall of the winding shaft, a measuring steel belt arranged around the steel belt wheel, the measuring steel belt extending to the inside of the tank body through the transmission wheel and the guide wheels in sequence, and a float fixedly connected to one end of the measuring steel belt.

[0010] A reduction gearbox is fixedly installed on the lower portion of one side of the back of the shell, a reduction assembly is arranged in the inside of the reduction gearbox, and an indicator disc is arranged on the back of the reduction gearbox.

[0011] As a preferred technical solution of the present application, the reduction assembly comprises a reduction shaft rotatably installed in the inside of the reduction gearbox, a second gear fixedly installed on the front side of the outer wall of the reduction shaft, a first gear fixedly installed on the rear end of the transmission shaft, the rear end of the transmission shaft extending to the inside of the reduction gearbox through the shell and the reduction gearbox in sequence, the first gear being engaged with the second gear, a fourth gear fixedly installed on the rear side of the outer wall of the reduction shaft, an indicator shaft rotatably installed on one side of the reduction shaft in the inside of the reduction gearbox, a third gear fixedly installed on the outer wall of the indicator shaft, the third gear being engaged with the fourth gear, the rear end of the indicator shaft extending to the inside of the indicator disc through the reduction gearbox, a pointer fixedly connected to the rear end of the indicator shaft, and a plurality of scale lines equidistantly arranged in the inside of the indicator disc.

[0012] As a preferred technical solution of the present application, the bottom end of the mounting pipe is fixedly installed with symmetrically arranged limiting frames, guide steel ropes are fixedly connected to the limiting frames, guide rings are fixedly installed on both sides of the outer wall of the float, and the guide rings are slidably sleeved on the corresponding guide steel ropes.

[0013] As a preferred technical solution of the present application, one end of the coil spring is fixedly connected to the outer wall of the winding shaft, and the other end of the coil spring is fixedly connected to the inner wall of the shell.

[0014] As a preferred technical solution of the present application, a stabilizing frame is fixedly installed on the inner surface of the shell, and the stabilizing frame is fixedly connected to the outer wall of the tank body through bolts.

[0015] As a preferred technical solution of the present application, the outer diameter of the first gear is smaller than the outer diameter of the second gear, and the outer diameter of the fourth gear is smaller than the outer diameter of the third gear.

[0016] As the preferred technical scheme of the present application, the lower magnetic flap flange is fixedly installed on the top end outer wall of the connecting pipe, the upper magnetic flap flange is fixedly installed on the outer wall of the mounting pipe, and the upper magnetic flap flange and the lower magnetic flap flange are fixedly connected through bolts.

[0017] As the preferred technical scheme of the present application, the float is a hollow sealing structure, and the density of the float is between the densities of two layered liquids of the measured medium.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. The interface liquid level meter adopts mechanical transmission and indication structure, and the core principle is that the float drives the measuring steel belt to change with the liquid level, the small displacement is amplified to clear scale indication of the pointer on the low position indication disc through the guide wheel and the gear reduction system, and the constant tension provided by the disc spring ensures the instantaneity and tracking accuracy of the system response.

[0020] 2. The vertical movement path of the float is accurately constrained through the sliding cooperation of the guide ring and the guide steel rope, and the horizontal degree of freedom of the float is effectively inhibited, the swing of the float caused by medium flow or equipment vibration is significantly reduced, the float can stably and accurately follow the liquid level change, and therefore the stability of liquid level signal transmission and the long-term accuracy of measurement results are fundamentally improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic view of the present application;

[0022] Figure 2 It is a sectional structure schematic view of the present application;

[0023] Figure 3 It is a sectional structure schematic view of the speed reducer in the present application;

[0024] Figure 4 It is a connection structure schematic view of the limiting frame and the mounting pipe in the present application;

[0025] Figure 5 It is a three-dimensional structure schematic view of the present application; Figure 2An enlarged structural schematic view at middle A;

[0026] Figure 6 The utility model discloses a Figure 4 An enlarged structural schematic view at middle B.

[0027] In the figure: 1, tank body; 2, shell; 3, installation pipe; 4, connecting pipe; 5, lower magnetic flap flange part; 6, upper magnetic flap flange part; 7, reduction gearbox; 8, indicating disc; 9, measuring steel band; 10, guide wheel; 11, limiting frame; 12, float; 13, steel band wheel; 14, transmission wheel; 15, transmission shaft; 16, first gear; 17, second gear; 18, indicating shaft; 19, third gear; 20, pointer; 21, fourth gear; 22, reduction shaft; 23, stabilizing frame; 24, winding shaft; 25, disc spring; 26, guide steel rope; 27, guide ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0029] Embodiment 1

[0030] Please refer to Figures 1-6 The utility model provides an embodiment:

[0031] A top-mounted type magnetic flap liquid level meter, comprising:

[0032] The connecting pipe 4 is fixedly installed on the upper side of the tank body 1, the installation pipe 3 is inserted on the connecting pipe 4, the top end of the installation pipe 3 is fixedly connected with the shell 2, the guide wheel 10 is rotatably installed on both sides of the upper part of the inside of the shell 2, the transmission shaft 15 is rotatably installed on the lower part of one side of the inside of the shell 2, the transmission wheel 14 is fixedly installed on the outer wall of the transmission shaft 15, and the constant assembly is arranged below the transmission shaft 15 in the inside of the shell 2.

[0033] The constant assembly comprises the winding shaft 24 rotatably installed below the transmission shaft 15 in the inside of the shell 2, the steel band wheel 13 is fixedly installed on the outer wall of the winding shaft 24, the disc spring 25 is arranged on the front side of the outer wall of the winding shaft 24, the measuring steel band 9 is arranged around the steel band wheel 13, the measuring steel band 9 is guided to the inside of the tank body 1 through the transmission wheel 14 and the guide wheel 10 in sequence, and one end of the measuring steel band 9 is fixedly connected with the float 12.

[0034] The lower side of the back of the shell 2 is fixedly installed with a reduction gearbox 7, the inside of the reduction gearbox 7 is provided with a reduction assembly, and the back of the reduction gearbox 7 is provided with an indicating disc 8.

[0035] Further, the reduction assembly comprises a reduction shaft 22 rotatably installed in the inside of the reduction gearbox 7, the front side of the outer wall of the reduction shaft 22 is fixedly installed with a second gear 17, the rear end of the transmission shaft 15 penetrates the shell 2 and the reduction gearbox 7 in sequence and extends to the inside of the reduction gearbox 7, the rear end of the transmission shaft 15 is fixedly installed with a first gear 16, the first gear 16 is engaged with the second gear 17, the rear side of the outer wall of the reduction shaft 22 is fixedly installed with a fourth gear 21, and the side of the reduction shaft 22 in the inside of the reduction gearbox 7 is rotatably installed with an indicating shaft 18, the outer wall of the indicating shaft 18 is fixedly installed with a third gear 19, the third gear 19 is engaged with the fourth gear 21, the rear end of the indicating shaft 18 penetrates the reduction gearbox 7 and extends to the inside of the indicating disc 8, the rear end of the indicating shaft 18 is fixedly connected with a pointer 20, and the inside of the indicating disc 8 is provided with a plurality of equally distributed scale lines. The first gear 16 on the transmission shaft 15 is engaged with the second gear 17 on the reduction shaft 22 to form a first-stage reduction, and the fourth gear 21 on the reduction shaft 22 is engaged with the third gear 19 on the indicating shaft 18 to form a second-stage reduction. The two-stage reduction transmission can efficiently convert the small linear displacement of the float 12 into the large-angle accurate rotation of the indicating shaft 18, so as to drive the pointer 20 to clearly and stably indicate the liquid level in the scale range of the indicating disc 8, thereby realizing the mechanical amplification and intuitive display of the measurement result.

[0036] Further, one end of the disc spring 25 is fixedly connected with the outer wall of the winding shaft 24, and the other end of the disc spring 25 is fixedly connected with the inner wall of the shell 2. The disc spring 25 provides a continuous and constant reverse torque for the winding shaft 24 and the steel belt wheel 13 through its own elastic torsion force, so as to ensure that the measurement steel belt 9 always maintains appropriate tension in the whole working process, effectively eliminates the slack or jamming of the steel belt, and guarantees the instantaneity and accuracy of displacement transmission.

[0037] Further, the inner surface of the shell 2 is fixedly installed with a stabilizing frame 23, and the stabilizing frame 23 is fixedly connected with the outer wall of the tank body 1 through bolts, thereby improving the operation stability of the shell 2.

[0038] Further, the outer diameter of the first gear 16 is smaller than the outer diameter of the second gear 17, and the outer diameter of the fourth gear 21 is smaller than the outer diameter of the third gear 19. The two-stage reduction transmission is formed, which can convert the small linear displacement of the float 12 with the change of the liquid level into the low-speed, large-amplitude and accurate angular displacement of the pointer 20 through the measurement steel belt 9.

[0039] Further, the top end outer wall of the connecting pipe 4 is fixedly provided with a lower magnetic flap flange 5, and the outer wall of the installation pipe 3 is fixedly provided with an upper magnetic flap flange 6, and the upper magnetic flap flange 6 is fixedly connected with the lower magnetic flap flange 5 through bolts. Stable and reliable mechanical support and sealing are provided, and the coaxiality and overall rigidity between the installation pipe 3 and the connecting pipe 4 are ensured.

[0040] Further, the float 12 is a hollow sealing structure, and the density of the float 12 is between the densities of two layered liquids of the measured medium. The float 12 can be stably suspended at the interface between the two liquids for a long time, so that the interface position of the clear layered liquid can be accurately tracked and continuously measured.

[0041] Embodiment 2

[0042] Refer to Figures 1-6 For the second embodiment of the utility model, the embodiment is based on the previous embodiment, specifically, the bottom end of the installation pipe 3 is fixedly provided with symmetrically distributed limiting frames 11, the two limiting frames 11 are fixedly connected with guide steel ropes 26, and both sides of the outer wall of the float 12 are fixedly provided with guide rings 27, and the guide rings 27 are slidingly sleeved on the corresponding guide steel ropes 26.

[0043] The working principle of the utility model is as follows: the installation of the interface liquid level meter is realized by inserting the installation pipe 3 into the connecting pipe 4 from the top opening of the connecting pipe 4, placing the float 12 in the tank body 1, and screwing the lower magnetic flap flange 5 and the upper magnetic flap flange 6 to ensure the stability of the whole. During detection, the float 12 floats with the liquid level under the action of the buoyancy, and the displacement of the float 12 is transmitted to the transmission wheel 14 through the steel belt guide wheel 10 under the guidance of the measuring steel belt 9, and the transmission shaft 15 is rotated. The rotation is transmitted to the indicating shaft 18 through the internal reduction assembly of the reduction box 7, and the pointer 20 is driven to indicate the corresponding scale on the indicating disc 8, so that the liquid level reading is realized. One end of the measuring steel belt 9 is wound on the steel belt wheel 13 and kept in constant tension under the action of the disc spring 25, and the other end bears the gravity of the float 12, and the system is in dynamic force balance; when the liquid level changes and the balance is destroyed, the force of the disc spring 25 is adjusted in real time, so that the float 12 tracks the liquid level, and the displacement is transmitted to the indicating mechanism at the same time. The instrument is simple in structure, reliable in use, low in manufacturing cost, and does not rely on external energy, and has high safety. It is suitable for economic liquid level measurement in normal pressure or low pressure occasions. The interface liquid level meter uses mechanical power to achieve data reading on the low position indicating disc 8 which is easy to see, and can be applied to high-rise equipment such as large storage tanks or reaction kettles, so as to ensure the efficiency and reading reliability of on-site inspection.

[0044] In the process of vertical movement of the float 12 with the change of the medium liquid level in the tank body 1, the movement of the float 12 is constrained by the sliding of the guide ring 27 along the guide wire 26. The guiding effect of the guide wire 26 on the guide ring 27 effectively limits the horizontal freedom of the float 12, avoids the float swing caused by the medium disturbance or the equipment vibration, and significantly improves the motion stability of the float 12 in the measurement process, thereby ensuring the accuracy and reliability of the liquid level detection result.

[0045] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. A top-mounting type magnetic float level gauge, characterized by comprising: It includes: The connecting pipe (4) is fixedly installed on the upper side of the tank body (1), the installation pipe (3) is inserted on the connecting pipe (4), the top end of the installation pipe (3) is fixedly connected with the shell (2), the two sides of the upper part of the inside of the shell (2) are rotatably installed with guide wheels (10), the lower side of the inside of the shell (2) is rotatably installed with a transmission shaft (15), the outer wall of the transmission shaft (15) is fixedly installed with a transmission wheel (14), the inside of the shell (2) is provided with a constant assembly below the transmission shaft (15). The constant assembly includes a winding shaft (24) rotatably installed in the inside of the shell (2) below the transmission shaft (15), the outer wall of the winding shaft (24) is fixedly installed with a steel belt wheel (13), the front side of the outer wall of the winding shaft (24) is provided with a coil spring (25), the steel belt wheel (13) is provided with a measuring steel belt (9) around, the measuring steel belt (9) extends to the inside of the tank body (1) through the guide of the transmission wheel (14) and the guide wheel (10) in sequence, one end of the measuring steel belt (9) is fixedly connected with a float (12). The lower side of one side of the back of the shell (2) is fixedly installed with a reduction gearbox (7), the inside of the reduction gearbox (7) is provided with a reduction assembly, the back of the reduction gearbox (7) is provided with an indicating disc (8).

2. A top-mounting type magnetic float plate liquid level meter according to claim 1, characterized in that: The reduction assembly includes a reduction shaft (22) rotatably installed in the inside of the reduction gearbox (7), the front side of the outer wall of the reduction shaft (22) is fixedly installed with a second gear (17), the rear end of the transmission shaft (15) extends to the inside of the reduction gearbox (7) through the shell (2) and the reduction gearbox (7) in sequence, the rear end of the transmission shaft (15) is fixedly installed with a first gear (16), the first gear (16) is engaged with the second gear (17), the rear side of the outer wall of the reduction shaft (22) is fixedly installed with a fourth gear (21), the indicating shaft (18) is rotatably installed on one side of the inside of the reduction gearbox (7), the outer wall of the indicating shaft (18) is fixedly installed with a third gear (19), the third gear (19) is engaged with the fourth gear (21), the rear end of the indicating shaft (18) extends to the inside of the indicating disc (8) through the reduction gearbox (7), the rear end of the indicating shaft (18) is fixedly connected with a pointer (20), the inside of the indicating disc (8) is provided with a plurality of equally spaced scale lines.

3. A top-mounting type magnetic float plate liquid level meter according to claim 1, characterized in that: The bottom end of the installation pipe (3) is fixedly installed with symmetrically distributed limiting racks (11), the two limiting racks (11) are fixedly connected with guide steel ropes (26), the two sides of the outer wall of the float (12) are fixedly installed with guide rings (27), the guide rings (27) are slidingly sleeved on the corresponding position of the guide steel ropes (26).

4. A top-mounting type magnetic float level meter according to claim 1, characterized in that: One end of the coil spring (25) is fixedly connected with the outer wall of the winding shaft (24), the other end of the coil spring (25) is fixedly connected with the inner wall of the shell (2).

5. A top-mounting type magnetic float level meter according to claim 1, characterized in that: The inner surface of the shell (2) is fixedly installed with a stabilizing rack (23), the stabilizing rack (23) is fixedly connected with the outer wall of the tank body (1) through bolts.

6. A top-mounting type magnetic float level meter according to claim 2, characterized in that: The outer diameter of the first gear (16) is smaller than the outer diameter of the second gear (17), and the outer diameter of the fourth gear (21) is smaller than the outer diameter of the third gear (19).

7. A top-mounting type magnetic float level meter according to claim 1, characterized in that: The lower magnetic flap flange (5) is fixedly installed on the top end outer wall of the connecting pipe (4), and the upper magnetic flap flange (6) is fixedly installed on the outer wall of the mounting pipe (3).

8. A top-mounting type magnetic float level meter according to claim 1, characterized in that: The float (12) is a hollow sealed structure, and the density thereof is between the densities of two layered liquids of the measured medium.

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