Cloth thickness measuring device for rotary hearth furnace

Abstract

The utility model discloses a rotary hearth furnace material distribution thickness measuring device which comprises a rotary hearth furnace material distribution machine (1), a rotary hearth furnace hearth (2) and a plurality of heavy hammer level gauges (3), the rotary hearth furnace material distribution machine (1) is fixedly arranged above the rotary hearth furnace hearth (2), and the rotary hearth furnace hearth (2) is provided with a plurality of measuring chain through holes matched with the heavy hammer level gauges (3). And a plurality of heavy hammer level gauges (3) extend into the lower part of the rotary hearth furnace from the through hole of the measuring chain. According to the utility model, quantitative feedback can be carried out on large material layer thickness data in the width direction in the rotary hearth furnace by utilizing the heavy hammer level gage, and production and material distribution are guided.

Description

Technical Field

[0001] The utility model relates to a device for measuring the thickness of rotary hearth furnace material distribution, belonging to the technical field of metallurgical machinery. Background Art

[0002] The rotary hearth furnace process is a relatively mature metallurgical technology for treating metallurgical dust and sludge in industrial application. The pellets prepared from metallurgical dust and sludge are distributed on the annular bottom of the rotary hearth furnace and are in a relatively static state. As the bottom of the furnace rotates, the pellets undergo different roasting zones and are reduced after being heated by radiation, and are discharged from the bottom of the furnace after the reduction is completed. Therefore, evenly distributing the pellets prepared from metallurgical dust and sludge on the bottom of the furnace can ensure that the rotary hearth furnace has a good roasting effect on the pellets. At present, the rotary hearth furnace generally uses a vibrating distributor to distribute the pellets. The bottom surface of the vibrating distributor has a certain inclination angle. With the continuous vibration of the distributor, the pellet flow slowly moves through several parallel guide chutes. The guide chutes divide the flow into several pellet flows. The end of each guide chute is a narrow and long distribution port of the distributor. The width of the distribution port is consistent with the width of the rotary hearth furnace bottom, and finally the pellet flow is spread on the bottom of the rotary hearth furnace.

[0003] In the industrial production process, there is no equipment to measure the thickness of the material layer in the rotary hearth furnace, so the thickness of the material layer cannot be quantitatively fed back. Most of the time, the uniformity of the material distribution is roughly judged by observing the material flow of the material distribution machine. Limited by the high temperature (above 900℃) and high dust content in the rotary hearth furnace, the radar surface shape measurement device commonly used in the market cannot be applied to the rotary hearth furnace. With the gradual increase in the requirements for intelligent and refined operations, there is an actual objective demand for the uniformity data of the material layer thickness of the rotary hearth furnace in production. The data fed back by the material layer thickness can specify measures to adjust the uniformity of the material layer thickness, which is used to improve the production efficiency and product quality of the rotary hearth furnace. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a rotary hearth furnace material thickness measuring device, which can quantitatively feedback the large material layer thickness data in the width direction of the rotary hearth furnace to guide the production of material distribution.

[0005] In the first aspect, the utility model provides a rotary hearth furnace charge thickness measuring device, comprising a rotary hearth furnace charge distribution machine, a rotary hearth furnace hearth and a plurality of weight level gauges, wherein the rotary hearth furnace charge distribution machine is fixedly arranged above the rotary hearth furnace hearth, and a measuring chain through hole for matching with the plurality of weight level gauges is provided on the rotary hearth furnace hearth, and the plurality of weight level gauges extend from the measuring chain through hole into the bottom of the rotary hearth furnace.

[0006] Preferably, the rotary hearth furnace charging machine includes a first horizontal plate, a second horizontal plate, a first vertical plate, a second vertical plate, an inclined plate, a plurality of partition plates, a plurality of partition rods and a bottom plate, the first vertical plate and the second vertical plate are fixedly connected to the bottom plate, both ends of the first horizontal plate are fixedly connected to the first vertical plate and the second vertical plate, both ends of the second horizontal plate are fixedly connected to the first vertical plate and the second vertical plate, the inclined plate is fixedly arranged on the bottom plate, a plurality of partition plates are fixedly arranged in parallel on the bottom plate, the upper ends of a plurality of partition rods are fixedly connected to the second horizontal plate, the lower ends of a plurality of partition rods are fixedly connected to a plurality of partition plates, the first horizontal plate, the inclined plate, a plurality of partition plates, a plurality of partition rods and the second horizontal plate are arranged in sequence.

[0007] Preferably, the rotary hearth furnace charging crane comprises a plurality of reinforcing triangular plates and a plurality of reinforcing transverse plates, wherein the plurality of reinforcing transverse plates are fixedly arranged on the first vertical plate or the second vertical plate, one end of the plurality of reinforcing triangular plates is fixedly connected to the reinforcing transverse plates, and the other end of the plurality of reinforcing triangular plates is fixedly arranged on the first vertical plate or the second vertical plate.

[0008] Preferably, the plurality of partition plates include a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, and the lengths of the first partition plate, the second partition plate, the third partition plate and the fourth partition plate are increased in sequence with equal intervals.

[0009] Beneficial effects achieved by the utility model:

[0010] The utility model designs a rotary hearth furnace charge thickness measuring device, comprising a rotary hearth furnace charge distribution machine, a rotary hearth furnace hearth and a plurality of weight level meters. The rotary hearth furnace charge distribution machine is fixedly arranged above the rotary hearth furnace hearth, a measuring chain through hole for matching with a plurality of weight level meters is arranged on the rotary hearth furnace hearth, a plurality of weight level meters extend from the measuring chain through hole into the bottom of the rotary hearth furnace, and the weight level meters can be used to quantitatively feedback the thickness data of the largest material layer in the width direction of the rotary hearth furnace to guide the production of charge distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0012] Figure 1 is a structural diagram of some embodiments of the present application;

[0013] Figure 2 are cross-sectional views of some embodiments of the present application;

[0014] Figure 3 It is a schematic diagram of the material surface shape in some embodiments of the present application;

[0015] Meaning of the reference numerals: 1-rotary hearth furnace charging machine; 2-rotary hearth furnace hearth; 3-weight level meter; 4-measuring chain; 5-weight; 6-rotary hearth furnace bottom; 11-first horizontal plate; 12-second horizontal plate; 13-first vertical plate; 14-second vertical plate; 15-reinforced triangular plate; 16-reinforced horizontal plate; 17-inclined plate; 18-partition plate; 19-partition rod; 20-bottom plate. DETAILED DESCRIPTION

[0016] To facilitate the technical solution of the application, some concepts involved in the application are first explained below.

[0017] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention, they are only used to explain the relative position relationship and movement status of the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0018] In addition, if the descriptions of "first" and "second" etc. are involved in the present utility model, they are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0019] See also Figure 1 The present application discloses a rotary furnace charge thickness measuring device, comprising a rotary furnace charge distributor 1, a rotary furnace hearth 2 and a plurality of weight level meters 3. The rotary furnace charge distributor 1 is fixedly arranged above the rotary furnace hearth 2. The rotary furnace hearth 2 is provided with a measuring chain through hole for matching with a plurality of weight level meters 3. The plurality of weight level meters 3 extend from the measuring chain through hole into the bottom of the rotary furnace. The utility model designs a rotary furnace charge thickness measuring device, which can quantitatively feedback the large material layer thickness data in the width direction of the rotary furnace to guide the production of charge distribution.

[0020] In the embodiment of the present application, the rotary hearth furnace charging machine 1 includes a first horizontal plate 11, a second horizontal plate 12, a first vertical plate 13, a second vertical plate 14, an inclined plate 17, 5 partition plates 18, 5 partition rods 19 and a bottom plate 20. The first vertical plate 13 and the second vertical plate 14 are fixedly connected to the bottom plate 20. Both ends of the first horizontal plate 11 are fixedly connected to the first vertical plate 13 and the second vertical plate 14. Both ends of the second horizontal plate 12 are fixedly connected to the first vertical plate 13 and the second vertical plate 14. The inclined plate 17 is fixedly arranged on the bottom plate 20. Several partition plates 18 are fixedly arranged in parallel on the bottom plate 20. The upper ends of several partition rods 19 are fixedly connected to the second horizontal plate 12. The lower ends of several partition rods 19 are fixedly connected to several partition plates 18. The first horizontal plate 11, the inclined plate 17, several partition plates 18, several partition rods 19 and the second horizontal plate 12 are arranged in sequence. The first horizontal plate 11, the second horizontal plate 12, the first vertical plate 13, the second vertical plate 14, the inclined plate 17, the plurality of partition plates 18, the plurality of partition rods 19 and the bottom plate 20 may be flat plates.

[0021] In the embodiment of the present application, the rotary hearth furnace charging boom 1 includes 12 reinforced triangular plates 15 and 4 reinforced transverse plates 16. The 4 reinforced transverse plates 16 are fixedly arranged on the first vertical plate 13 or the second vertical plate 14. One end of every three reinforced triangular plates 15 is fixedly connected to a reinforced transverse plate 16, and the other ends of the three reinforced triangular plates 15 are fixedly arranged on the first vertical plate 13 or the second vertical plate 14.

[0022] In the embodiment of the present application, the plurality of partition plates 18 include a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, and the lengths of the first partition plate, the second partition plate, the third partition plate and the fourth partition plate are increased in sequence with equal intervals.

[0023] There are many types of rotary hearth furnace chamber 2 and several weight level meters 3 available in the prior art, and those skilled in the art can select them according to actual needs, and no examples are given in this embodiment.

[0024] The utility model designs a rotary hearth furnace material distribution thickness measuring device, which can quantitatively feedback the material layer thickness data in the width direction of the rotary hearth furnace and guide the production of material distribution.

[0025] (1) A rotary hearth furnace charge thickness measuring device comprises a rotary hearth furnace charge distributor, a weight level meter, a computer, and a rotary hearth furnace.

[0026] (2) A series of weight level meters are installed on the top of the rotary hearth furnace with circulating water cooling behind the rotary hearth furnace distributor. The series of weight level meters are evenly arranged linearly, and the linear arrangement direction coincides with the radial direction of the rotary hearth furnace.

[0027] (3) A series of linearly arranged weight level meters span the width of the entire rotary hearth furnace. The distance between the measuring points of adjacent weight level meters is less than 0.3 meters. The number of weight level meters is related to the width of the rotary hearth furnace.

[0028] (3) Each weight level meter measures the material layer thickness at its corresponding point at the same frequency, with the measurement frequency being 0.5 min / time to 10 min / time. The measurement data are fed back to the computer at the same time and can be used to draw and fit into a coordinate graph by the computer, which can be used to obtain the material layer thickness curve at the corresponding time.

[0029] (4) The measuring chain and the weight of the weight level meter are made of high temperature resistant and oxidation resistant metal materials. At the same time, except for the measuring chain and the weight, the rest of the weight level meter is outside the furnace of the rotary hearth furnace. The installation part of the weight level meter and the furnace of the rotary hearth furnace is sealed to isolate the high temperature and dust in the rotary hearth furnace.

[0030] The utility model utilizes a weight level meter to meet the working conditions of high temperature and high dust in a rotary hearth furnace, utilizes a series of weight level meters to synchronously and frequency measure the height of the distribution material layer in the rotary hearth furnace, realizes the measurement of the distribution material layer shape, can accurately feedback the shape of the material surface in the rotary hearth furnace, and formulate an operation plan to optimize the distribution uniformity, and has the characteristics of simple operation and convenient maintenance.

[0031] Hammer level - is to use the hammer level meter or hammer level meter to measure the continuous amount of material level, such as the German UWT SLS-NB hammer, which is an electronic mechanical level measuring instrument, mainly used for the continuous measurement of material height or volume in hoppers, silos and storage tanks. The moving distance of the induction hammer during the downward measurement is measured by the electronic part of the internal steel belt / (cable) The rotation is converted into an output signal by the microprocessor. The signal is proportional to the height of the silo and will be automatically updated every time the induction hammer touches the surface of the material. The hammer level meter can measure feed, chemicals, plastic particles, cement, stones, PVC powder, aggregates, liquids, coal, limestone, ground plastics, sand, powder, grains, oil, etc. The hammer level meter is often used in power plant ash storage, coal bunkers, slag bunkers, mud pools, etc. Advantages: Mechanical measurement, simple and reliable, strong anti-dust interference ability. The range of the heavy hammer level meter can reach 45.7 meters. The heavy hammer level meter has multiple dust-proof designs (dust-proof brush, air inlet, measurement chamber isolation), which is not affected by the humidity and viscosity of the medium. The heavy hammer level meter is not affected by the dielectric constant, conductivity, and thermal conductivity of the medium. The heavy hammer level meter can also be used to measure special liquids such as mud, slurry, and asphalt (high temperature). The heavy hammer level meter consists of a sensor and an instrument. The sensor adopts a heavy hammer detection type. Various signals are taken out by a special acquisition unit. There is no mechanical contact and reliable operation. The sensor is placed on the top of the silo, and the heavy hammer is pulled into the silo by a motor through a stainless steel belt or a wire rope. The instrument controls the sensor to automatically detect the material level at a fixed time. Each time the measurement is made, the heavy hammer starts to drop from the starting position on the top of the silo, and immediately returns to the top of the silo when it touches the material surface to wait for the next measurement. The instrument can obtain the distance hl from the top of the silo to the material surface by processing the sensor signal of the falling process of the heavy hammer. The silo height H is preset by the user. In this way, the material level height h=H-hl can be obtained by subtracting hl from the silo height H. The instrument directly displays the material level height h. The system adopts PLC control, which is powerful, stable and easy to operate; it is particularly suitable for the level detection and control of powder, block, granular and liquid materials in cylindrical silos in the power, metallurgy, cement, coal, chemical, food and other industries. In particular, this material level indicator is equipped with a communication function, which can not only be used alone, but also be connected to the upper computer to form a distributed monitoring system. The upper computer can centrally manage the material level data sent from each site; display and print all the information of each silo, provide the enterprise with necessary information at any time, and greatly improve the scientific management level and economic benefits of the enterprise.

[0032] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0033] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the utility model herein. This application is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not invented by the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0034] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

Claims

1. A rotary hearth furnace material thickness measuring device, characterized in that: The invention comprises a rotary hearth furnace charge distributor (1), a rotary hearth furnace chamber (2) and a plurality of weight level gauges (3). The rotary hearth furnace charge distributor (1) is fixedly arranged above the rotary hearth furnace chamber (2). The rotary hearth furnace chamber (2) is provided with measuring chain through holes for matching with the plurality of weight level gauges (3). The plurality of weight level gauges (3) extend from the measuring chain through holes into the bottom of the rotary hearth furnace.

2. The rotary hearth furnace material thickness measuring device according to claim 1, characterized in that: The rotary hearth furnace charge placing machine (1) comprises a first horizontal plate (11), a second horizontal plate (12), a first vertical plate (13), a second vertical plate (14), an inclined plate (17), a plurality of partition plates (18), a plurality of partition rods (19) and a bottom plate (20), wherein the first vertical plate (13) and the second vertical plate (14) are fixedly connected to the bottom plate (20), the first horizontal plate (11) is fixedly connected to the first vertical plate (13) and the second vertical plate (14) at both ends, and the second horizontal plate (12) is fixedly connected to the first vertical plate (13) and a second vertical plate (14), the inclined plate (17) is fixedly arranged on the bottom plate (20), a plurality of partition plates (18) are fixedly arranged in parallel on the bottom plate (20), the upper ends of a plurality of partition rods (19) are fixedly connected to the second horizontal plate (12), the lower ends of a plurality of partition rods (19) are fixedly connected to a plurality of partition plates (18), and the first horizontal plate (11), the inclined plate (17), the plurality of partition plates (18), the plurality of partition rods (19) and the second horizontal plate (12) are arranged in sequence.

3. The rotary hearth furnace material thickness measuring device according to claim 2, characterized in that: The rotary hearth furnace charge placing machine (1) comprises a plurality of reinforcing triangular plates (15) and a plurality of reinforcing transverse plates (16), wherein the plurality of reinforcing transverse plates (16) are fixedly arranged on a first vertical plate (13) or a second vertical plate (14), one end of the plurality of reinforcing triangular plates (15) is fixedly connected to the reinforcing transverse plates (16), and the other end of the plurality of reinforcing triangular plates (15) is fixedly arranged on the first vertical plate (13) or the second vertical plate (14).

4. The rotary hearth furnace material thickness measuring device according to claim 1, characterized in that: The plurality of partition plates (18) include a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, and the lengths of the first partition plate, the second partition plate, the third partition plate and the fourth partition plate increase in sequence at equal intervals.

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