CN210570929U

CN210570929U - Material level meter

Info

Publication number: CN210570929U
Application number: CN201921662689.9U
Authority: CN
Inventors: 王松委; 赵庆威; 明杰; 谭清明
Original assignee: Jidong Cement Chongqing Hechuan Co Ltd
Current assignee: Jidong Cement Chongqing Hechuan Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-05-19
Anticipated expiration: 2029-09-30

Abstract

The utility model belongs to the technical field of measuring device, a charge level indicator, including casing, reel, plummet and drag chain, open at the casing bottom has the through-hole, the inside rotation of casing connects the reel, the drag chain twines at the reel outer wall, the drag chain free end wears out the through-hole and extends outside the casing, drag chain free end fixed connection plummet, be equipped with power module in the casing, drag chain parcel has flexible cable, the outer wall fixed connection of casing has the signal lamp, the plummet bottom surface is equipped with the trigger switch that receives pressure closure, trigger switch is off-state at the free state; one end of the flexible cable is electrically connected to the trigger switch, the other end of the flexible cable is electrically connected to the power supply module, and the power supply module, the trigger switch and the signal lamp form a closed series circuit. An object of the utility model is to provide a charge level indicator to solve the technical problem who how to confirm that the plummet touches the end completely.

Description

Material level meter

Technical Field

The utility model belongs to the technical field of measuring device.

Background

The level meter is an instrument for detecting the height change of solid gravel materials in a container in real time, and is used for measuring the height position of the surface of the gravel materials in the storage bin so as to know the quantity of the stored materials in the storage bin. Level gauges typically include self-plumb level gauges, nuclear radiation level gauges, and ultrasonic level gauges.

The measurement of gravel material level is typically done for lead hammer level gauges using hall effect detection technology and a microcontroller timer circuit. However, the hall element is easily interfered by temperature, which affects the stability of the working state of the hall element, so that an operator needs to calibrate the hall element before using the hall element every time, and the problem of complicated operation exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a charge level indicator to solve the direct convenient technical problem that measures of charge level indicator.

In order to achieve the above object, the basic scheme of the utility model is: a material level meter comprises a shell, a winding drum, a plumb bob and a traction chain, wherein a through hole is formed in the bottom of the shell, the shell is internally and rotatably connected with the winding drum, the traction chain is wound on the outer wall of the winding drum, the free end of the traction chain penetrates out of the through hole and extends to the outside of the shell, the free end of the traction chain is fixedly connected with the plumb bob, a power supply module is arranged in the shell, the traction chain is wrapped with a flexible cable, a signal lamp is fixedly connected to the outer wall of the shell, a trigger switch which is closed under pressure is arranged; one end of the flexible cable is electrically connected to the trigger switch, the other end of the flexible cable is electrically connected to the power supply module, and the power supply module, the trigger switch and the signal lamp form a closed series circuit.

The working principle and the beneficial effects of the basic scheme are as follows: the rotation of the drum lengthens the length of the drag chain in the vertical direction, and the plumb bob descends along the vertical direction under the action of gravity. When the bottom surface of the plumb bob just contacts the top surface of the gravel material, the trigger switch contacts the gravel material. After the top surface of plumb bob complete contact gravel material, the gravity that the trigger switch received and brought by the plumb is converted into closed state, and power module, trigger switch and signal lamp form closed series circuit under this state and have the electric current to pass through, and then make the signal lamp can the circular telegram light, finally make the height of measurement that the plumb bob surveyed be the height of the place of the real gravel material after the plumb bob completely touched the end.

Compare in prior art, technical scheme itself utilizes mechanics to judge the actual position of plummet and has higher accuracy, only needs to have promptly can send the signal of feedback when the plummet falls on the grit material completely, does not need operating personnel to carry out calibration in advance. In addition, the technical scheme can more visually inform the plumb condition of the operator by means of visual transmission through the signal lamp, and has more obvious prompt effect.

Further, the trigger switch comprises a sliding block, a groove is formed in the bottom surface of the plumb bob, the sliding block is connected in the groove in a sliding mode along the axial direction of the plumb bob, a pressure spring is connected between the sliding block and the groove, the sliding block protrudes out of the bottom surface of the plumb bob when the pressure spring is in a free state, a conducting strip is fixed on the top surface of the sliding block, a conducting protrusion matched with the conducting strip is fixed on the top surface of the groove, and the conducting protrusion and the conducting strip are respectively and electrically connected to the flexible cable.

After the bottom surface of the plumb bob contacts the gravel material, the sliding block is compressed towards the direction of the top surface of the groove under the action of pressure, the conducting strip and the conducting protrusion on the top surface of the sliding block are close to each other until the conducting strip and the conducting protrusion are contacted with each other, the formed trigger switch is in a closed state after the conducting strip and the conducting protrusion are contacted with each other, and then the power supply module, the trigger switch and the signal lamp form a closed series circuit to pass through current, so that the signal lamp is finally turned on.

Further, the groove is an annular groove, and the sliding block is of an annular structure matched with the groove.

This technical scheme adopts annular structure so that technical staff's installation or dismantlement.

Furthermore, the bottom surface of the plumb bob is coaxially and fixedly connected with a positioning needle.

This technical scheme is through addding the pilot pin to utilize the pilot pin to swiftly insert the gravel material of the height to be measured in the middle of, also guaranteed the stability of plummet decline in-process simultaneously.

Furthermore, the outer wall of the positioning needle is provided with a plurality of annular bulges along the axial direction of the positioning needle at equal intervals.

In the process of inserting the positioning needle into the gravel material, the annular bulge is utilized to play a role in fixing, so that the positioning needle cannot move freely in the gravel material, and the technical effect of stably placing the plumb bob is finally achieved.

Furthermore, a guide cylinder is welded and fixed at the bottom of the shell, the axial direction of the guide cylinder is parallel to the vertical direction, and the traction chain is connected to the inner wall of the guide cylinder in a sliding manner.

This technical scheme is through addding the guide cylinder to play the guide effect to the drag chain, avoid the skew in the horizontal direction to appear in the drag chain.

Further, an annular sponge layer is arranged on the inner wall of the guide cylinder, and the inner diameter of the annular sponge layer is smaller than the outer diameter of the traction chain.

This technical scheme passes through the interference fit between cyclic annular sponge and the drag chain, and at the in-process that the drag chain passes through cyclic annular sponge layer, the sponge layer strikes off the dust dirt of adhering to at the drag chain outer wall to reach the clear technological effect to the drag chain outer wall.

Further, the coaxial fixedly connected with a plurality of telescopic cylinder in bottom surface of guide cylinder, it is adjacent telescopic cylinder is along axial sliding connection, the one end fixed connection in the top surface of plummet that the guide cylinder was kept away from to telescopic cylinder, the drag chain is located in the telescopic cylinder.

This technical scheme is through addding a flexible section of thick bamboo, and then makes a flexible section of thick bamboo can prolong or shorten along with the length change of drag chain to reach the not technological effect of harm of protection drag chain.

Further, the plumb bob is of a vertical type round table body structure.

Compare in prior art's cylinder structure, the round platform structure can provide higher stability, and the bottom surface of round platform also can laminate better at the grit material top surface that awaits measuring simultaneously.

Further, the outer wall of the shell is further fixed with a buzzer, and the buzzer is connected in series in a closed series loop formed by the power supply module, the trigger switch and the signal lamp.

This technical scheme is through adopting the mode of series connection bee calling organ, through the technical effect of sound signals in order to reach warning operating personnel.

Drawings

FIG. 1 is a front cross-sectional view of a level gauge according to a first embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a front sectional view of the level gauge according to the second embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a shell 1, a winding drum 2, a servo motor 3, a traction chain 4, a plumb bob 5, a guide cylinder 6, an annular groove 7, a baffle plate 8, a signal lamp 9, a buzzer 10, a telescopic cylinder 11, an annular bulge 12, a sliding block 13, a conducting strip 14 and a conducting bulge 15.

Example one

Substantially as shown in figures 1 and 2: a charge level indicator comprises a shell 1, wherein the outer contour of the shell 1 is of a cuboid box-packed structure. The bottom of the shell 1 is provided with a through hole. The bottom surface of the shell 1 is fixedly connected with a guide cylinder 6 which is coaxial with the through hole, the guide cylinder 6 and the shell 1 are integrally formed, and the inner diameter of the guide cylinder 6 is equal to that of the through hole. The outer wall of the guide cylinder 6 is also provided with a baffle 8, the baffle 8 is of an annular plate-shaped structure, the axial direction of the baffle 8 is coaxial with the axial direction of the guide cylinder 6, and the baffle 8 is welded and fixed on the outer wall of the guide cylinder 6.

The inner wall of the shell 1 is fixedly connected with a servo motor 3 through a bolt, and the axial direction of an output shaft of the servo motor 3 is parallel to the horizontal plane. Be equipped with reel 2 in the casing 1, reel 2 is located the side top of through-hole, and the one end of the center pin of reel 2 rotates and connects in the 1 inner wall of casing, and the coaxial fixed connection in servo motor 3's of the other end output shaft. The outer wall of the winding drum 2 is wound with a traction chain 4 along the circumferential direction, and the traction chain 4 is a flexible cable wrapped by rubber materials. One end of the drag chain 4 is fixedly connected to the outer wall of the winding drum 2, and the other end of the drag chain 4 passes through the through hole and the guide cylinder 6 and extends to the outside of the shell 1. One end fixedly connected with plummet 5 that reel 2 was kept away from to drag chain 4, plummet 5 is the structure of cylinder, and the bottom surface of plummet 5 is the plane. The bottom surface of the plumb bob 5 is provided with a circular annular groove 7. The annular groove 7 is internally provided with a sliding block 13 matched with the annular groove, the sliding block 13 is connected in the annular groove 7 in a sliding manner along the axial direction of the plumb 5, a pressure spring is fixedly connected between the sliding block 13 and the annular groove, and the bottom end of the sliding block 13 protrudes out of the bottom surface of the plumb when the pressure spring is in a free state. The top surface of the sliding block 13 is embedded and fixed with a conducting strip 14, the top surface of the annular groove is fixed with a conducting bulge 15 matched with the conducting strip 14, the conducting bulge 15 is positioned right above the conducting strip 14, and the conducting bulge 15 and the conducting strip 14 are both in an annular structure. The conductive protrusion 15 and the conductive plate 14 are electrically connected to the flexible cable, respectively. And a positioning needle is welded and fixed at the center of the bottom surface of the plumb bob 5, and the axial direction of the positioning needle is coaxial with the axial direction of the plumb bob 5. The outer wall of the shell 1 is respectively embedded and fixedly connected with a signal lamp 9 and a buzzer 10, wherein the specific model of the buzzer 10 is an active piezoelectric ASM-27-III type buzzer, and the inner thread of the shell 1 is fixedly connected with a power supply. The power supply, the conductive protrusion 15, the conductive sheet 14, the buzzer 10 and the signal lamp 9 form a closed series circuit.

The specific implementation process is as follows: when the actual place height of gravel material needs to be surveyed, at first start servo motor 3, circumferential direction takes place for reel 2 under servo motor 3's drive, and the rotation of reel 2 makes the length increase of 4 vertical directions of drag chain, and plumb bob 5 is close to the direction of gravel material simultaneously. Then, the pilot pin of the plumb bob 5 is inserted into the gravel material, and the pilot pin is inserted into the inside of the gravel material by the gravity of the plumb bob 5. After the positioning pin completely extends into the gravel material, the bottom surface of the sliding block 13 is contacted with the top surface of the gravel material, and the sliding block 13 moves into the annular groove after being extruded by the gravity of the plumb bob 5 until the conducting strip 14 on the top surface of the sliding block 13 is contacted with the conducting protrusion 15. After the conducting strip 14 is abutted to the conducting lug 15, the power supply, the conducting lug 15, the conducting strip 14, the buzzer 10 and the signal lamp 9 form a closed series loop, current passes through the closed series loop, the buzzer 10 and the signal lamp 9 are finally triggered, the buzzer 10 and the signal lamp 9 are transmitted to an operator through a visual signal and a sound signal, and the technical effect of prompting that the plumb bob 5 reaches the height of the gravel material is achieved.

Example two

As shown in fig. 3, the difference between the first embodiment and the second embodiment is that four telescopic cylinders 11 are fixedly welded to the bottom surface of the guide cylinder 6 coaxially, each adjacent telescopic cylinder 11 is connected in a sliding manner in the axial direction, and one end of each telescopic cylinder 11 away from the guide cylinder 6 is fixedly welded to the top surface of the plumb bob 5. The drag chain 4 at the top of the plumb bob 5 is located inside the telescopic cylinder 11. The outer wall of pilot pin is equipped with a plurality of annular bulge 12 along its self axial equidistance, and annular bulge 12 is the wedge shape that the top external diameter is greater than the bottom external diameter, and formula as an organic whole shaping between annular bulge 12 and the pilot pin.

The specific implementation mode is as follows: during the lowering of the plumb bob 5, the drag chain 4 is extended. Because the telescopic cylinder 11 is fixedly connected with the plumb bob 5, the telescopic cylinder 11 is also extended along with the plumb bob 5 in the descending process, and the protection effect on the traction chain 4 is achieved. The side slope of the annular protrusion 12 outside the pilot pin will act as a guide when the pilot pin is inserted into the gravel material. And after the positioning pin is inserted, the annular protrusion 12 increases the friction force with the gravel material, thereby improving the stability of the whole plumb bob 5.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be pointed out that to those skilled in the art, without departing from the structure of the present invention, a plurality of modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the present invention.

Claims

1. The utility model provides a charge level indicator, includes casing, reel, plummet and drag chain, open the casing bottom has the through-hole, the casing is inside to be rotated and is connected the reel, the drag chain winding is at the reel outer wall, the drag chain free end is worn out the through-hole extends in the casing is outside, drag chain free end fixed connection the plummet, its characterized in that: a power supply module is arranged in the shell, the flexible cable is wrapped on the traction chain, a signal lamp is fixedly connected to the outer wall of the shell, a trigger switch which is closed under pressure is arranged on the bottom surface of the plumb bob, and the trigger switch is in an off state in a free state; one end of the flexible cable is electrically connected with the trigger switch, the other end of the flexible cable is electrically connected with the power supply module, and the power supply module, the trigger switch and the signal lamp form a closed series circuit.

2. A level gauge as claimed in claim 1, wherein: the trigger switch comprises a sliding block, a groove is formed in the bottom surface of the plumb bob, the sliding block is connected in the groove in a sliding mode along the axial direction of the plumb bob, a pressure spring is connected between the sliding block and the groove, the sliding block protrudes out of the bottom surface of the plumb bob when the pressure spring is in a free state, a conducting strip is fixed on the top surface of the sliding block, a conducting protrusion matched with the conducting strip is fixed on the top surface of the groove, and the conducting protrusion and the conducting strip are respectively and electrically connected to the flexible cable.

3. A level gauge as claimed in claim 2, wherein: the groove is an annular groove, and the sliding block is of an annular structure matched with the groove.

4. A level gauge as claimed in claim 1, wherein: and the bottom surface of the plumb bob is coaxially and fixedly connected with a positioning needle.

5. A level gauge as claimed in claim 4, wherein: the outer wall of the positioning needle is provided with a plurality of annular bulges along the axial direction of the positioning needle at equal intervals.

6. A level gauge as claimed in claim 1, wherein: the bottom welded fastening of casing has the guide cylinder, the axial of guide cylinder is on a parallel with vertical direction, drag chain sliding connection is in the inner wall of guide cylinder.

7. A level gauge as claimed in claim 6, wherein: and an annular sponge layer is arranged on the inner wall of the guide cylinder, and the inner diameter of the annular sponge layer is smaller than the outer diameter of the traction chain.

8. A level gauge as claimed in claim 6, wherein: the bottom surface of guide cylinder is coaxial fixedly connected with a plurality of telescopic cylinders, and is adjacent telescopic cylinder is along endwise slip connection, the one end fixed connection that the guide cylinder was kept away from to the telescopic cylinder is in the top surface of plummet, the drag chain is located in the telescopic cylinder.

9. A level gauge as claimed in claim 1, wherein: the plumb bob is of a vertical type round table body structure.

10. A level gauge as claimed in claim 1, wherein: the shell outer wall is also fixed with a buzzer, and the buzzer is connected in series in a closed series loop formed by the power supply module, the trigger switch and the signal lamp.