阅读说明：本技术 一种沥青贮槽用顶装杠杆式浮标液位计 (Top-mounted lever type buoy liquid level meter for asphalt storage tank ) 是由 杨雪松 于 2019-11-01 设计创作，主要内容包括：本发明涉及一种沥青贮槽用顶装杠杆式浮标液位计,包括由杠杆浮球机构及浮球联动指示机构组成的杠杆式浮标液位计；所述杠杆浮球机构的杠杆支架设于沥青液面上方,杠杆浮球机构中的杠杆与杠杆支架通过从动轮轴铰接,从动轮轴上固定有从动轮,从动轮能够在杠杆带动下绕从动轮轴的轴线转动；浮球联动指示机构中的钢丝绳一端与从动轮连接,另一端竖直向上延伸穿出沥青贮槽后连接重锤,钢丝绳自沥青贮槽穿出处通过密封孔板密封。本发明在现有沥青贮槽用杠杆式浮标液位计的基础上进行结构改进,具有全氮气密封结构,杠杆浮球机构的转动连接部位处于液面之上,能够在长时间运行时保证运转灵活,同时安装、检修更加方便,使液位计的使用更加可靠、稳定。(The invention relates to a top-mounted lever type buoy liquid level meter for an asphalt storage tank, which comprises a lever type buoy liquid level meter consisting of a lever floating ball mechanism and a floating ball linkage indicating mechanism; a lever support of the lever floating ball mechanism is arranged above the asphalt liquid level, a lever in the lever floating ball mechanism is hinged with the lever support through a driven wheel shaft, a driven wheel is fixed on the driven wheel shaft, and the driven wheel can rotate around the axis of the driven wheel shaft under the driving of the lever; one end of a steel wire rope in the floating ball linkage indicating mechanism is connected with the driven wheel, the other end of the steel wire rope vertically extends upwards to penetrate through the asphalt storage tank and then is connected with a heavy hammer, and the part, penetrating out of the asphalt storage tank, of the steel wire rope is sealed through a sealing pore plate. The lever type buoy liquid level meter for the asphalt storage tank is structurally improved on the basis of the existing lever type buoy liquid level meter for the asphalt storage tank, has a full nitrogen sealing structure, can ensure flexible operation when in long-time operation because the rotary connecting part of the lever floating ball mechanism is positioned above the liquid level, is more convenient to install and maintain, and ensures that the liquid level meter is more reliable and stable to use.)

1. A top-mounted lever type buoy liquid level meter for an asphalt storage tank comprises a lever type buoy liquid level meter consisting of a lever floating ball mechanism and a floating ball linkage indicating mechanism; the asphalt mixing machine is characterized in that a lever bracket of the lever floating ball mechanism is arranged above the asphalt liquid level, a lever in the lever floating ball mechanism is hinged with the lever bracket through a driven wheel shaft, a driven wheel is fixed on the driven wheel shaft, and the driven wheel can rotate around the axis of the driven wheel shaft under the driving of the lever; one end of a steel wire rope in the floating ball linkage indicating mechanism is connected with the driven wheel, the other end of the steel wire rope vertically extends upwards to penetrate through the asphalt storage tank and then is connected with a heavy hammer, and the part, penetrating out of the asphalt storage tank, of the steel wire rope is sealed through a sealing pore plate.

2. A top-mounted lever type float level gauge for an asphalt storage tank as claimed in claim 1, wherein said lever is composed of side bars and connecting rods, 2 side bars are arranged in parallel, and 2 side bars are connected with each other by a plurality of connecting rods; the lever bracket consists of 2 frame rods arranged in parallel, and a through hole is formed in one end of each frame rod, which is connected with the driven wheel shaft; the driven wheel shaft penetrates through the side lever on one side, the frame lever on one side, the driven wheel, the frame lever on the other side and the side lever on the other side in sequence, and two ends of the driven wheel shaft are respectively locked through locking nuts; the side rod is connected with the driven wheel shaft and the driven wheel is connected with the driven wheel shaft through keys.

3. The top-mounted lever type float level gauge for asphalt storage tank of claim 1, wherein the float ball of said lever-float ball mechanism is an oval hollow ball.

4. The top-mounted lever type buoy level gauge for the asphalt storage tank as claimed in claim 1, wherein the top of the asphalt storage tank is provided with a tee pipe mounting hole, the bottom inlet of the fixed tee pipe is connected with the tee pipe mounting hole through a flange, the sealing orifice plate is arranged between 2 flanges, and the middle part of the sealing orifice plate is provided with a small hole through which only a steel wire rope can pass.

Technical Field

The invention relates to the technical field of liquid level measurement, in particular to a top-mounted lever type buoy liquid level meter for an asphalt storage tank.

Background

Asphalt raw materials and asphalt products used by tar distillation equipment are stored in an asphalt storage tank, but asphalt level measurement is always difficult. Chinese patent application No. CN 201910336481.6 discloses a lever type float level gauge for asphalt storage tank, which comprises a lever float ball mechanism and a float ball linkage indicating mechanism mounted on the asphalt storage tank; the lever floating ball mechanism consists of a lever bracket, a lever and a floating ball, one end of the lever bracket is connected with the asphalt storage tank, the other end of the lever bracket is hinged with the middle part of the lever through a pin shaft, the floating ball is arranged at one end of the lever, and the tail wheel is arranged at the other end of the lever; the floating ball linkage indicating mechanism consists of a steel wire rope, a pulley, a fixed three-way pipe, a connecting three-way pipe, a vertical pipe, a heavy hammer, a magnet and a magnetic turning plate indicator; the fixed three-way pipe and the connecting three-way pipe are arranged at the top of the asphalt storage tank in parallel, pulleys are respectively arranged in the fixed three-way pipe and the connecting three-way pipe, one end of a steel wire rope is connected with a tail pulley, the other end of the steel wire rope is connected with a heavy hammer after bypassing the fixed three-way pipe and the pulleys in the connecting three-way pipe, the heavy hammer is arranged in the vertical pipe, the vertical pipe is fixed outside the asphalt storage tank, a magnet is arranged at the bottom of the heavy hammer, a magnetic turning plate indicator is arranged on one side of the vertical pipe in parallel.

Although the lever type buoy liquid level meter overcomes various defects of the traditional buoy liquid level meter in the liquid level measurement of the asphalt storage tank, the problem of the liquid level measurement of asphalt liquid with the characteristics of high temperature, high boiling point, high liquid viscosity, easy solidification, high asphalt smoke volatilization and easy condensation is solved. However, in practical application, the technical scheme still has a place which needs to be improved, for example, a lever bracket in the lever floating ball mechanism is positioned below the asphalt liquid level, and the asphalt contains solid suspended matters such as polymers, so that the problem of unsmooth rotation of a lever in the lever floating ball mechanism can exist in long-time application; in addition, in the technical scheme, the lever bracket is hinged with the middle part of the lever, the tail part of the lever is connected with the steel wire rope through the tail wheel, and when the floating ball floats along with the liquid level, the track of the steel wire rope at the penetrating position from the asphalt storage tank is a plane motion track which is approximately directly connected, so that hard sealing cannot be realized at the position; in the technical scheme, only the part behind the connecting three-way pipe is sealed by nitrogen, and the risk of poor operation of the front pulley can exist in long-time application.

Disclosure of Invention

The invention provides a top-mounted lever-type buoy liquid level meter for an asphalt storage tank, which is structurally improved on the basis of the existing lever-type buoy liquid level meter for the asphalt storage tank.

In order to achieve the purpose, the invention adopts the following technical scheme:

a top-mounted lever type buoy liquid level meter for an asphalt storage tank comprises a lever type buoy liquid level meter consisting of a lever floating ball mechanism and a floating ball linkage indicating mechanism; a lever support of the lever floating ball mechanism is arranged above the asphalt liquid level, a lever in the lever floating ball mechanism is hinged with the lever support through a driven wheel shaft, a driven wheel is fixed on the driven wheel shaft, and the driven wheel can rotate around the axis of the driven wheel shaft under the driving of the lever; one end of a steel wire rope in the floating ball linkage indicating mechanism is connected with the driven wheel, the other end of the steel wire rope vertically extends upwards to penetrate through the asphalt storage tank and then is connected with a heavy hammer, and the part, penetrating out of the asphalt storage tank, of the steel wire rope is sealed through a sealing pore plate.

The lever consists of side rods and connecting rods, wherein 2 side rods are arranged in parallel, and the 2 side rods are connected through a plurality of connecting rods; the lever bracket consists of 2 frame rods arranged in parallel, and a through hole is formed in one end of each frame rod, which is connected with the driven wheel shaft; the driven wheel shaft penetrates through the side lever on one side, the frame lever on one side, the driven wheel, the frame lever on the other side and the side lever on the other side in sequence, and two ends of the driven wheel shaft are respectively locked through locking nuts; the side rod is connected with the driven wheel shaft and the driven wheel is connected with the driven wheel shaft through keys.

The floating ball in the lever floating ball mechanism is an elliptic hollow ball body.

The top of the asphalt storage tank is provided with a three-way pipe mounting hole, the bottom inlet of the fixed three-way pipe is connected with the three-way pipe mounting hole through a flange, a sealing orifice plate is arranged between 2 flanges, and the middle part of the sealing orifice plate is provided with a small hole through which a steel wire rope can only pass.

Compared with the prior art, the invention has the beneficial effects that:

1) the lever type buoy liquid level meter for the conventional asphalt storage tank adopts a single lever to connect a circular floating ball, but the lever type buoy liquid level meter adopts the lever connection of an oval floating ball and a double-lever structure, so that the lever motion stability can be improved, and the buoyancy is larger;

2) the resistance arm of the lever is changed into a driven wheel from the lever, the steel wire rope is vertically upwards connected with the pulley along the tangential direction of the driven wheel, the motion track of the steel wire rope is approximate to a point, sealing can be realized by opening a hole on the sealing orifice plate, the loss of sealing nitrogen is reduced, and the integral sealing of the floating ball linkage indicating mechanism is realized;

3) the resistance arm of the lever is changed from the lever to the driven wheel, so that the movement track of the steel wire rope is more stable, the scales of the magnetic turning plate indicator plate are more uniform and linear, and the remote display function of the instrument is favorably realized;

4) the rotation connecting part of the lever floating ball mechanism is positioned above the liquid level, and compared with the lever buoy liquid level meter for the existing asphalt storage tank, the rotation connecting part of the lever floating ball mechanism is positioned below the liquid level, the device can keep clean under the working state, the influence of asphalt on the device is effectively prevented and reduced, the long-time operation flexibility is ensured, the installation and the maintenance are more convenient, and the operation of the liquid level meter is more reliable and stable.

Drawings

FIG. 1 is a front view of a top-mounted lever float level gauge for an asphalt storage tank according to the present invention.

Fig. 2 is a sectional view a-a in fig. 1.

In the figure: 1. asphalt storage tank 2, lever mounting hole 3, tee pipe mounting hole 4, lever support 5, lever 6, floating ball 7, driven wheel 8, pin shaft 9, steel wire rope 10, mounting hole blind plate 11, fixed tee pipe 12, connecting tee pipe 13, vertical pipe 14, horizontal pipe 15, sealing orifice plate 16, pulley 17, tee pipe blind plate 18, heavy hammer 19, magnet 20, magnetic turning plate indicator 21, nitrogen inlet 22, connecting flange 23, vertical pipe fixing support

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in figures 1 and 2, the top-mounted lever type buoy liquid level meter for the asphalt storage tank comprises a lever type buoy liquid level meter consisting of a lever floating ball mechanism and a floating ball linkage indicating mechanism; the lever bracket 4 of the lever floating ball mechanism is arranged above the asphalt liquid level, a lever 5 in the lever floating ball mechanism is hinged with the lever bracket 4 through a driven wheel shaft, a driven wheel 7 is fixed on the driven wheel shaft, and the driven wheel 7 can rotate around the axis of the driven wheel shaft under the driving of the lever 5; one end of a steel wire rope 9 in the floating ball linkage indicating mechanism is connected with the driven wheel 7, the other end of the steel wire rope vertically extends upwards to penetrate through the asphalt storage tank 1 and then is connected with a heavy hammer, and the part, where the steel wire rope 9 penetrates out of the asphalt storage tank 1, is sealed through a sealing pore plate 15.

The lever 5 consists of side rods and connecting rods, wherein 2 side rods are arranged in parallel, and the 2 side rods are connected through a plurality of connecting rods; the lever bracket 4 consists of 2 frame rods arranged in parallel, and a through hole is formed in one end of each frame rod connected with the driven wheel shaft; the driven wheel shaft penetrates through the side lever on one side, the frame lever on one side, the driven wheel 7, the frame lever on the other side and the side lever on the other side in sequence, and two ends of the driven wheel shaft are respectively locked through locking nuts; the side rod is connected with the driven wheel shaft and the driven wheel 7 is connected with the driven wheel shaft through keys.

The floating ball 6 in the lever floating ball mechanism is an elliptic hollow ball body.

The top of the asphalt storage tank 1 is provided with a three-way pipe mounting hole 3, the bottom inlet of a fixed three-way pipe 11 is connected with the three-way pipe mounting hole 3 through a flange, a sealing orifice plate 15 is arranged between 2 flanges, and the middle part of the sealing orifice plate 15 is provided with a small hole through which a steel wire rope 9 can only pass.

The invention relates to a top-mounted lever type buoy liquid level meter for an asphalt storage tank, which comprises a lever floating ball mechanism and a floating ball linkage indicating mechanism, wherein the lever floating ball mechanism and the floating ball linkage indicating mechanism are arranged on the asphalt storage tank 1; the lever floating ball mechanism consists of a lever bracket 4, a lever 5, a floating ball 6 and a driven wheel 7, one end of the lever bracket 4 is connected with the asphalt storage tank 1, the other end of the lever bracket is connected with a driven wheel shaft fixed at the tail end of the lever 5 through a pin shaft 8, the floating ball 6 is arranged at one end of the lever 5, and the other end of the lever 5 drives the driven wheel 7 through the lever 5; the floating ball linkage indicating mechanism consists of a steel wire rope 9, a pulley 16, a fixed three-way pipe 11, a horizontal pipe 14, a connecting three-way pipe 12, a vertical pipe 13, a heavy hammer 18, a magnet 19 and a magnetic turning plate indicator 20; the fixed three-way pipe 11 and the connecting three-way pipe 12 are arranged at the top of the asphalt storage tank 1 in parallel, the middle parts of the fixed three-way pipe 11 and the connecting three-way pipe 12 are in transitional connection through a horizontal pipe 14, pulleys 16 are respectively arranged in the fixed three-way pipe 11 and the connecting three-way pipe 12, a steel wire rope 9 vertically extends upwards from the outer edge of one end, away from the floating ball 6, of the driven wheel 7, the other end of the steel wire rope 9 bypasses the fixed three-way pipe 11 and the pulleys 16 in the connecting three-way pipe 12 and then is connected with a heavy hammer 18, the heavy hammer 18 is arranged in a vertical pipe 13, the vertical pipe 13 is fixed on the outer side of the asphalt storage tank 1, a magnet 19 is arranged at.

The distance L1 between the floating ball and the pin shaft is equivalent to a power arm, the radius L2 of the driven wheel is equivalent to a resistance arm, and L1 is at least 3 times of L2.

As shown in fig. 1, a lever mounting hole 2 is formed in one side of the top of the asphalt storage tank 1, the lever mounting hole 2 is sealed through a mounting hole blind plate 10, and one end of a lever bracket 4 is fixedly connected with the mounting hole blind plate 10; the lever bracket 4 is composed of 2 frame plates which are arranged in parallel, and 2 side rods of the lever 5 are respectively arranged on the outer sides of the 2 frame plates.

The weight of the weight 18 is set at L1: and L2 is 2 times of the buoyancy of the floating ball 6 under the condition of 4.

The top of the asphalt storage tank 1 is provided with a three-way pipe mounting hole 3, the inlet of a fixed three-way pipe 11 is connected with the three-way pipe mounting hole 3 through flanges, a sealing orifice plate 15 is clamped between 2 flanges, the sealing orifice plate 15 can be made of metal or nonmetal, and the middle part of the asphalt storage tank is provided with a small hole through which a steel wire rope 9 can only pass. When the floating ball linkage indicating mechanism is filled with sealed nitrogen, the loss of the nitrogen can be reduced; the outlet of one side of the fixed three-way pipe 11, which is close to the connecting three-way pipe 12, is connected with a transverse pipe 14 for transition through a flange, the outlet of the other side is closed through a three-way pipe blind plate 17, and a pulley support is arranged on the three-way pipe blind plate and used for supporting a pulley 16.

One outlet of the connecting three-way pipe 12 is connected with the vertical pipe 13 through a connecting flange, the inlet of one side, close to the fixed three-way pipe 11, of the connecting three-way pipe 12 is connected with the transverse pipe 14 for transition through a flange, the outlet of the other side is closed through a three-way pipe blind plate 17, and a pulley support is arranged on the three-way pipe blind plate 17 and used for supporting a pulley 16.

A transverse pipe 14 for transition is arranged between the fixed three-way pipe 11 and the connecting three-way pipe 12, two ends of the transverse pipe 14 are respectively connected with the fixed three-way pipe 11 and the connecting three-way pipe 12 through flanges, a steel wire rope 9 penetrating out from a pulley 16 on the fixed three-way pipe penetrates through the pulley 16 in the connecting three-way pipe 12 after passing through the transverse pipe 14, and a nitrogen inlet 21 is arranged at the top of the transverse pipe 14.

The stand pipe 13 is detachably and fixedly connected with the side wall of the asphalt storage tank 1 through a stand pipe fixing bracket 23.

In the invention, the floating ball 6 is fixed at one end of the lever 5 and can float up and down along with the liquid surface of the stored asphalt in the asphalt storage tank 1, and the driven wheel 7 can synchronously rotate with the lever 5 through a driven wheel shaft 8 which is horizontally arranged.

The distance L1 between the floating ball 6 and the pin shaft 8 is several times of the radius L2 of the driven wheel 7, so that a lever force which is larger than the buoyancy of the floating ball 6 can be generated at the resistance end of the driven wheel 7, such as L1: and L2 is 4, the resistance end of the driven wheel 7 can generate a lever force 4 times of the buoyancy of the floating ball 6. Because the reverse lever force of the weight 18 is overcome when the floating ball 6 floats, the weight of the weight 18 is set to be half of the lever force acting on one end of the tail wheel 7 through the buoyancy, i.e. the weight of the weight 18 is 2 times of the buoyancy of the floating ball 6, so that the lifting force and the descending force are kept consistent (both are 2 times of the buoyancy of the floating ball 6).

The use process of the top-mounted lever type buoy liquid level meter for the asphalt storage tank comprises the following steps: when the liquid level of the asphalt stored in the asphalt storage tank 1 rises, the floating ball 6 floats upwards along with the rise of the liquid level under the action of asphalt buoyancy, the driven wheel 7 pulls the steel wire rope 9 vertically downwards under the action of the lever 5, the steel wire rope 9 sequentially bypasses the two pulleys 16 and then is connected to the heavy hammer 18, and the heavy hammer 18 is pulled upwards by balance force to drive the magnet 19 to move upwards; when the liquid level descends, the floating ball 6 descends along with the descending of the liquid level, at the moment, the buoyancy disappears, the lever force disappears, the heavy hammer 18 in the vertical pipe 13 moves downwards under the action of the gravity force, the magnet 19 is driven to move downwards, the driven wheel 7 synchronously rotates until the floating ball 6 generates the buoyancy and reaches a balanced state, and the heavy hammer 18 stops moving; when the magnet 19 moves, the magnetic coupling is transmitted to the magnetic turning plate indicator 20, so that the magnetic turning column in the magnetic turning plate indicator 20 is driven to turn red and white and display the liquid level height.

The asphalt storage tank is continuously filled with nitrogen during operation using a top-mounted lever-type float level gauge to protect the magnetic flip indicator 20 from asphalt fumes.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.