JP2007033142A - Metering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a metering device capable of storing safely high-temperature liquid, metering accurately the supply amount to a receiving device, and performing easily supply management of the high-temperature liquid to a metering vessel. <P>SOLUTION: This metering device 1 has a constitution equipped with the metering vessel 4 provided with a liquid inlet 5a having a liquid introduction pipe 6 and a liquid outlet 3a having an on-off valve 12, storing a liquid kneading material (high-temperature liquid) inside, and sealable by an upper lid 5; an oil jacket 14 for the vessel provided on the circumference of the metering vessel 4, for heating the liquid kneading material in the metering vessel 4; a support metering means 22 for supporting the metering vessel 4 in the suspended state from a horizontal beam 21a of a pedestal 21, equipped with a load cell for measuring the load transferred to the pedestal 21 through the metering vessel 4; and an inert gas introduction port and a breather valve 9 provided on an upper part of the metering vessel 4, for replacing the air in the upper part of the metering vessel 4 with inert gas. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a measuring device for storing and weighing a high-temperature liquid kneaded material obtained by mixing a powdery aggregate such as coal ash and incinerated ash and a high-temperature liquid such as molten sulfur.

Conventionally, a hopper, a weighing tank, a feeder, and a mixer are arranged in order from top to bottom on a vertically installed stand, and powdered aggregates such as steelmaking slag, steelmaking dust, and incinerated ash that are heated and dried with a rotary kiln, etc. It is supplied to the hopper and stored, and the powdered aggregate is weighed in the measuring tank and then fed into the mixer by a feeder, and liquid sulfur and additives are pumped from the sulfur tank and the additive tank through pumps, respectively. A fixed amount is supplied to the mixer, and the powdered aggregate, liquid sulfur and additives are kneaded in the mixer to prepare a fluid kneaded product (liquid kneaded product), and the liquid kneaded product is formed into a predetermined shape. An apparatus for producing a sulfur-solidified molded product by molding is known (for example, see Patent Document 1).
JP-A-8-318244

In the sulfur solidified molded product manufacturing apparatus, the liquid sulfur stored in the sulfur tank needs to be supplied to the mixer in a liquid state and mixed with the powdered aggregate. Above, it is always heated to 119-159 ° C. In this way, when sulfur is heated to a high temperature, it becomes flammable. However, the sulfur tank has a problem that safety equipment corresponding thereto is not provided.
In addition, the liquid sulfur in the sulfur tank can measure a predetermined amount to be supplied to the mixer by a flow meter or the like provided in the middle of the pipe, but no means for measuring the mass of the sulfur tank is provided. There is a problem in that it is impossible to accurately know the remaining state of liquid sulfur in the sulfur tank, and supply management such as replenishment from the liquid sulfur supply source to the sulfur tank cannot be performed reliably.

  The present invention has been made in view of the above circumstances, stores hot liquid safely, accurately measures the amount supplied to the receiving device, and easily manages the supply of hot liquid to the measuring tank. It is an object of the present invention to provide a weighing device that can be used.

The present invention is characterized by the following points in order to solve the above problems.
That is, the metering device according to claim 1 is provided with a sealable metering tank having a liquid inlet and a liquid outlet and containing a high temperature liquid therein, and heating for heating the high temperature liquid in the metering tank provided on the outer periphery of the metering tank. Means, supporting weighing means for supporting the weighing tank on the gantry and measuring the load transmitted to the gantry via the weighing tank, and provided in the upper part of the weighing tank, An inert gas inlet and a breather valve for replacing with an inert gas are provided.

  The measuring device according to claim 2 is the measuring device according to claim 1, wherein the supporting measuring means is a measuring support member formed by connecting a pair of hanging metal fittings that rotate in directions perpendicular to each other above and below the load cell. A plurality of the measurement tanks are arranged at equal intervals in the circumferential direction, one of the suspension brackets of each measurement support member is fixed to the gantry, and the other of the suspension brackets is fixed to the upper end of the measurement tank. It is characterized by being configured to be suspended from and supported by a gantry.

  The metering device according to claim 3 is the metering device according to claim 1 or 2, wherein the heating means includes a tank oil jacket through which hot oil flows on the outer peripheral side of the metering tank, and the liquid tank of the metering tank has a liquid inlet. The hot oil introduced into the tank oil jacket from one of the oil jackets for the flow path provided respectively on the outer periphery of the connected liquid supply pipe and the outer periphery of the on-off valve connected to the liquid outlet It is characterized by being configured to flow out to the other side of the oil jacket.

  A metering device according to a fourth aspect is the metering device according to any one of the first to third aspects, wherein a short liquid introduction pipe inserted from an upper lid of the metering tank is suspended at a liquid inlet of the metering tank. In addition, it is characterized in that a cover tube having a larger diameter and a longer diameter is provided so as to surround the liquid introduction tube and extend vertically to an intermediate portion in the height direction of the measuring tank.

The present invention has the following excellent effects.
That is, according to the metering device according to claim 1, the inert gas introduced from the inert gas inlet is replaced with the air discharged from the upper space in the metering tank through the breather valve, Since the high-temperature liquid is blocked from contact with air, even if the high-temperature liquid has flammability, it can be safely stored in the measuring tank without the possibility of causing ignition. In addition, by measuring the mass of the high-temperature liquid in the measuring tank by the support measuring means, the supply amount of the high-temperature liquid supplied from the liquid outlet to the receiving device can be accurately measured, and the high-temperature liquid to the measuring tank can be measured. Can be easily managed.

  According to the weighing device of the second aspect, each measurement support member suspends the measurement tank from the gantry without restraining the movement of the measurement tank in the lateral direction by the pair of suspension fittings. The load acting on the load can be equally applied, and the mass of the high-temperature liquid in the measuring tank by the load cell can be measured more accurately.

  According to the metering device of the third aspect, the metering tank, the piping for supplying and discharging the high temperature liquid to the metering tank, and the opening / closing valve are heated by the hot oil at the same time. Can be maintained at temperature. In addition, since the hot oil can be supplied to the tank oil jacket and the flow path oil jacket by one hot oil supply system, piping of the hot oil supply system can be simplified.

  According to the metering device of the fourth aspect, since the high-temperature liquid that has flowed into the metering tank from the liquid introduction pipe is guided to the lower part of the metering tank by the cover tube, the liquid level above the metering tank is the inflowing hot liquid As a result, the measuring tank does not sway and shake, and the mass of the hot liquid in the measuring tank can be stably measured by the load cell.

Hereinafter, a weighing device according to an embodiment of the present invention will be described with reference to the accompanying drawings.
1 to 3, reference numeral 1 denotes a weighing device according to an embodiment of the present invention. The weighing device 1 includes a weighing tank 4 formed by joining an inverted conical cylindrical (funnel-shaped) bottom 3 to the lower end of a cylindrical body 2. A disc-shaped upper lid 5 for closing the opening 4b of the measuring tank 4 is detachably attached to a flange 4a provided on the outer periphery of the upper end of the measuring tank 4. A liquid inlet 5a is opened at the center of the upper lid 5, and a short liquid inlet pipe 6 is provided in the liquid inlet 5a so as to protrude vertically from the upper lid 5 and hang in the axial direction of the measuring tank 4. A small hole 6 a is formed around the lower portion of the liquid introduction pipe 6. Further, a cover tube 7 arranged concentrically with a gap is formed outside the liquid introduction tube 6 on the lower surface of the upper lid 5, and the cover tube 7 is longer than the liquid introduction tube 6. Therefore, the lower end is extended to the vicinity of the lower end position (the upper end position of the bottom portion 3) of the body portion 2, that is, to the intermediate portion in the height direction of the measuring tank 4. A plurality of slits 7 a are provided around the lower end of the cover tube 7.

The upper lid 5 is provided with an inert gas introduction pipe 8 and a pressure regulating valve (breather valve) 9 in communication with each other in the measuring tank 4. The inert gas introduction pipe 8 is connected to the upper lid 5 from an inert gas supply source. Due to the pressure of the inert gas introduced and replaced with air, the inside of the measuring tank 4 is kept at a constant pressure slightly higher than the atmospheric pressure. Further, the upper lid 5 is provided with an inspection port 10 that is closed by a removable lid 10a.
An opening / closing valve 12 such as a ball valve that is opened and closed by an actuator 11 such as a cylinder is provided at the liquid outlet 3 a provided at the center of the bottom 3 of the measuring tank 4. A trunk jacket plate 14 a and a bottom jacket plate 14 b are attached to the outer circumferences of the trunk portion 2 and the bottom portion 3 of the measuring tank 4 through a separating tool 13 and attached to the outer circumference of the weighing tank 4. An oil jacket (tank oil jacket) 14 is provided as a heating means for heating the measuring tank 4 through hot oil. The on-off valve 12 is also provided with an oil jacket (flow path oil jacket) 15 on the outer periphery of the valve case.

The lower end of the tank oil jacket 14 provided on the bottom 3 of the measuring tank 4 is connected to the pipe oil jacket 15 of the open / close valve 12 by a pipe 16a connected to the oil pipe 3b. The oil jacket 15 is connected to an oil jacket 17a for a liquid discharge pipe 17 connected to the liquid outlet 3a via an opening / closing valve 12 by a pipe 16b. Further, the upper end portion of the tank oil jacket 14 provided in the trunk portion 2 of the measuring tank 4 is connected to the liquid supply pipe 18 connected to the liquid introduction pipe 6 through a pipe 16c connected to the oil pipe 4c. It is communicated with a pipeline oil jacket 18a provided on the outer periphery.
In addition, the outer surface of the tank oil jacket 14 (the trunk and bottom oil jacket plates 14a and 14b) of the measuring tank 4 and the lower surface corresponding to the inner side of the inspection port 10 of the opening / closing lid 10a are insulated by glass wool or the like. A material 19 is mounted.

In the weighing tank 4 having the above-described configuration, a plurality of (three in the illustrated example) brackets 20 are fixed to the outer periphery of the upper end of the trunk portion 2 at equal intervals in the circumferential direction. By being respectively connected to a plurality of (three in the illustrated example) support weighing means 22 fixed to a support seat 21b provided on the horizontal beam 21a, it is suspended from and supported by the pedestal 21. .
As shown in FIG. 4, the support weighing unit 22 includes a measurement support member 25 formed by connecting a pair of hanging metal fittings 24, 24 that rotate in the direction perpendicular to each other above and below the load cell 23. That is, one suspension fitting 24 connected to the upper side of the load cell 23 has a connection piece 24a fixed to the load cell 23 with a screw, and a bifurcated portion 24b1 into which the connection end 24a1 of the connection piece 24a is inserted at the lower end. The connecting rod 24b having the threaded portion 24b2 on the upper end side, the bifurcated piece 24b1, and the connecting end 24a1 inserted into the pin hole are inserted into the connecting piece 24a and the connecting rod 24b. And a pin 24c that is connected so as to rotate relatively in a plane along the diameter direction of the measuring tank 4.

Then, the threaded portion 24b2 of the connecting rod 24b is vertically inserted through a bolt hole provided in the support seat 21b of the gantry 21, and is arranged above and below the support seat 21b and screwed into the threaded portion 24b2. One suspension fitting 24 is fixed to the support seat 21b by fastening a plurality of nuts 24d.
The other hanging bracket 24 connected to the lower side of the load cell is arranged upside down with respect to the one hanging bracket 24, and the connecting rod 24b is fixed to the bracket 20 of the measuring tank 4, Except for the fact that the rotation direction of the connecting piece 24a and the connecting rod 24b is perpendicular to the rotation direction of the one hanging bracket 24, the other configuration is the same as that of the one hanging bracket 24. Therefore, the same parts are denoted by the same reference numerals, and description thereof is omitted.

  A positioning rod 26 having an upper end fixed to a support seat 21b of the gantry 21 with a nut 26a is disposed adjacent to each measurement support member 25, and the measuring tank is disposed at the lower end portion of the positioning rod 26. 4 is inserted into a bolt hole 20a provided in the bracket 20, and a double nut 26b is screwed together. The amount of screwing of the double nut 26b that supports the bracket 20 with respect to the positioning rod 26 is adjusted, and the support seat is adjusted. After positioning the measuring tank 4 in the height direction with respect to 21b, the mounting position in the vertical direction of the measurement support member 25 with respect to the support seat 21b and the bracket 20 is adjusted accordingly. The load cell 23 can be adjusted so that the load is applied evenly. After the adjustment of the mounting position of the measurement support member 25 is completed, the double nut 26b is loosened and separated from the bracket 20.

Next, the operation of the weighing device 1 having the above-described configuration will be described based on the case where the weighing device 1 is applied to the sulfur solid product manufacturing plant 30 shown in FIG.
First, the said sulfur solidified material manufacturing plant 30 is demonstrated. As shown in FIG. 5, this sulfur solidified product manufacturing plant 30 is a liquid kneaded product (kneaded coal ash (powdered aggregate)) with molten sulfur (high-temperature liquid) that has been modified by adding additives. A kneaded material supply device 31 for supplying a high-temperature liquid), and a powdered aggregate such as steelmaking slag and silica sand, which is dried and heated by an aggregate heating and supply device 32 such as a dryer, and the kneaded material supply device 31. A metering and mixing device 34 for metering and mixing the high-temperature liquid kneaded material supplied from.

  The weighing and mixing device 34 receives and stores the aggregate transported by the bucket elevator 33 in a hot bottle 35, and puts the aggregate into the powder weighing tank 36 in a timely manner and measures the mass with the load cell 36a. The gate 37a is opened and charged into the biaxial paddle type mixer 37. Then, the liquid kneaded material supplied from the kneaded material supply device 31 through the pipe p1 is received in the measuring tank 4 of the measuring device 1, measured by the support measuring means 22, and the mixer via the pipe p2 by the pump 38. 37 and sprayed on the aggregate inside the mixer 37 by a spray pipe 37b provided at the tip of the pipe p2, and the mixer 37 agitates and mixes the aggregate and the high-temperature liquid kneaded material. ing.

  The liquid mixture composed of the aggregate and the liquid kneaded material mixed by the mixer 37 is received by the bucket 40a of the skip conveyor 40 via the hopper 39 and conveyed upward to the sulfur solidified material forming device 41. Supplied. In the sulfur solidified product forming apparatus 41, the liquid mixture supplied from the skip conveyor 40 is stored in the surge bin 42, dropped into the placing hopper 43 at a proper time, and then weighed by the load cell 43a before forming the formwork. 44. The liquid mixture placed in the mold 44 is cured by passing through a predetermined cooling time to produce a molded sulfur solidified product.

In addition to the metering tank 4, an inert gas such as nitrogen gas is provided above the inside of the kneaded material supply device 31 and the mixer 37 from a gas tank 45 a of an inert gas supply source 45 through a pipe p 3 by a compressor 45 b. Is supplied at a predetermined pressure, and the contained liquid in the devices 31 and 37 is cut off from the air.
In addition to the metering tank 4, the mixer 37, the pump 38, and the pipes p1 and p2 are supplied with hot oil circulated and supplied from the hot oil heater 46 to the oil jacket provided on the outer periphery thereof by the pipes 46a and 46b. These are heated to a predetermined temperature (for example, 130 to 150 ° C.). Although not shown, the kneaded product supply device 31 is also heated to a predetermined temperature (for example, 130 to 150 ° C.) by supplying hot oil to an oil jacket provided on the outer periphery.

Next, the operation of the weighing device 1 according to the embodiment when used in the sulfur solidified product production plant 30 will be specifically described.
When the operation of the sulfur solidified product production plant 30 is started, hot oil (130 to 150 ° C.) is supplied from the hot oil heater 46 to the oil jackets of the pipes p1 and p2 and the mixer 37 through the pipe 46a. They are heated. The hot oil supplied to the pipe p2 flows into the oil jacket 17a for the liquid discharge pipe 17 through the oil jacket of the pump 38, and then enters the oil jacket 15 for the pipe of the on-off valve 12 by the pipe 16b. Then, it flows from the oil pipe 3b through the pipe 16a to the lower end of the tank oil jacket 14 of the measuring tank 4. The hot oil flowing into the tank oil jacket 14 flows upward, flows out of the tank oil jacket 14 through the oil pipe 4c, and flows into the pipe line oil jacket 18a of the liquid supply pipe 18 through the pipe 16c. Later, it is returned to the hot oil heater 46 through the pipe 46b.

  As described above, in a state where the opening / closing valve 12, the liquid discharge pipe 17, the measuring tank 4 and the liquid supply pipe 18 are heated by the hot oil, the kneaded product supply apparatus 31 is heated to a high temperature (130 to 150 ° C). The liquid kneaded material is sent to the liquid introduction pipe 6 through the pipe p1 and the liquid supply pipe 18. The liquid kneaded material sent to the liquid introducing pipe 6 flows into the measuring tank 4 from the upper part of the measuring tank 4 through the inside of the covering pipe 7, and the liquid level floats through the outside of the covering pipe 7 from the bottom part 3 side. And stored in the measuring tank 4. The mass of the liquid kneaded material that has flowed into the weighing tank 4 is measured by the load cell 23 of the measurement support member 25 in the support weighing means 22, and when the inflow amount reaches a predetermined storage amount (set mass), the kneading is performed. The supply of the liquid kneaded material from the material supply device 31 is stopped. Each of the measurement support members 25 is configured such that the pair of hanging metal fittings 24 and 24 are relatively rotated in directions orthogonal to each other, so that the measuring tank 4 can be freely moved in the lateral direction. Thus, the weighing tank 4 is suspended and supported on the horizontal beam 21a of the gantry 21 so that the load sharing to each load cell 23 is equal. Further, the liquid kneaded material flowing into the measuring tank 4 from the liquid introduction pipe 6 flows down to the liquid level in the measuring tank 4 in the cover pipe 7 and is guided to the bottom 3 side. When the liquid kneaded material is allowed to flow into the liquid introduction pipe 6, the liquid surface does not wave and the measuring tank 4 does not shake.

  The liquid kneaded material stored in the measuring tank 4 is maintained at a predetermined temperature (130 to 150 ° C.) by heat from the hot oil flowing in the tank oil jacket 14. Meanwhile, an inert gas such as nitrogen gas supplied from the inert gas supply source 45 through the pipe p3 is introduced into the upper space of the measuring tank 4 from the inert gas introduction pipe 8, and the inert gas is introduced into the breather. It is replaced with the air exhausted from the upper space through the valve 9, and the inside of the measuring tank 4 is maintained at a predetermined pressure. Thereby, even if the high-temperature liquid kneaded material in the measuring tank 4 has flammability, it does not come into contact with air, so there is no risk of ignition.

  On the other hand, the aggregate dried and heated to, for example, 130 to 150 ° C. by the aggregate heating and supplying device 32 is introduced from the material introduction port 33a into the bucket elevator 33 through the pipe 32a, and conveyed upward by the internal bucket. It is supplied into the hot bottle 35 of the metering and mixing device 34 through the gate 33c opened from the chute 33b. When the aggregate supplied into the hot bottle 35 is measured in the powder measuring tank 36 and then put into the mixer 37 through the gate 37a, the opening / closing valve 12 at the lower end of the measuring tank 4 is opened. At the same time, the pump 38 is operated, and the liquid kneaded material in the measuring tank 4 is sent to the mixer 37 through the liquid discharge pipe 17 and the pipe p2, and is sprayed onto the aggregate in the mixer 37 from the spray pipe 37b. Stir and mix with ingredients. At that time, the amount of the liquid kneaded material supplied to the mixer 37 is measured by the load cell 23 of the measurement support member 25, and when the supply amount reaches a set amount, the pump 38 is stopped, The on-off valve 12 is closed. When the remaining amount of the liquid kneaded material in the measuring tank 4 is reduced by being supplied to the mixer 37, this is detected by the load cell 23 of the measurement support member 25, and the liquid kneaded material is supplied to the kneaded material based on the measured value of the load cell 23. A required amount is supplied from the device 31 to the measuring tank 4.

  As described above, the measuring device 1 according to the embodiment includes the measuring tank 4 that can be sealed by the upper lid 5 that is provided with the liquid inlet 5a and the liquid outlet 3a and accommodates a high-temperature liquid kneaded material (hot liquid) inside, A tank oil jacket (heating means) 14 provided on the outer periphery of the measuring tank 4 for heating the liquid kneaded material in the measuring tank 4, and supports the measuring tank 4 on the base 21 and also supports the base 21 via the measuring tank 4. A support metering means 22 for measuring the mass transmitted to the tank, an inert gas inlet 8 and a breather valve provided above the metering tank 4 for replacing the air above the metering tank 4 with an inert gas. 9.

  Therefore, according to the metering device 1 according to the embodiment, the inert gas introduced from the inert gas inlet 8 is replaced with the air discharged from the upper space in the metering tank 4 through the breather valve 9, Since the liquid kneaded material in the measuring tank 4 is blocked from contact with air, even if the liquid kneaded material is flammable, it can be safely stored in the measuring tank 4 without causing a fire. it can. Further, by measuring the mass of the liquid kneaded material in the measuring tank 4 by the support measuring means 22, it is possible to accurately measure the supply amount of the liquid kneaded material supplied from the liquid outlet 5 to the mixer (receiving device) 37. In addition, the supply management of the liquid kneaded material into the measuring tank 4 can be easily performed.

  Further, according to the weighing device 1 according to the embodiment, the support weighing means 22 is a pair of hanging metal fittings 24 that are rotated above and below the load cell 23 in the radial direction of the weighing tank 4 and the direction perpendicular thereto. A plurality of measurement support members 25 connected to each other in the circumferential direction of the measuring tank 4 are arranged at equal intervals, and the hanging metal fittings 24 above the measurement support members 25 are attached to the horizontal beam 21a of the gantry 21. Since the fixed lower metal fitting 24 is fixed to the bracket 20 at the upper end of the measuring tank 4 and the measuring tank 4 is suspended from and supported by the gantry 21, each measurement support member 25 has a pair of suspensions. Since the measuring tank 4 is suspended from the gantry 21 without restraining the lateral movement of the measuring tank 4 by the metal fittings 24, 24, the measurement supporting members 25 equally load the measuring tank 4 and the load acting on it. To load The mass of liquid kneaded product in the metering chamber 4 by 23 can be more accurately measured.

  Further, according to the metering device 1 according to the embodiment, a tank oil jacket 14 through which hot oil flows on the outer periphery side of the metering tank 4 is provided on the outer periphery of the open / close valve 12 connected to the liquid outlet 3a. The hot oil introduced into the tank oil jacket 14 from the road oil jacket 15 through the pipe 16a and the oil pipe 3b is provided on the outer periphery of the liquid supply pipe 18 connected to the liquid inlet 5a of the measuring tank 4. The flow passage oil jacket 18a flows out through the oil pipe 4c and the pipe 16c, so that the measuring tank 4 and the liquid supply pipe 18 for supplying and discharging the liquid kneaded material to the metering tank 4 and the open / close valve 12 are provided. Are heated by hot oil at the same time, the liquid kneaded material in the measuring tank 4 can be reliably maintained at a predetermined temperature. In addition, since the hot oil can be supplied to the tank oil jacket 14 and the channel oil jackets 15 and 18a by one hot oil supply system, piping of the hot oil supply system can be simplified.

  Furthermore, according to the metering device 1 according to the embodiment, the liquid inlet 5a of the metering tank 4 is provided with a short liquid introduction pipe 6 inserted inside from the top lid 5 of the metering tank 4, A cover tube 7 having a diameter larger than that of the liquid introduction tube 6 and extending to a middle portion in the height direction of the measuring tank 4 (near the upper end portion of the bottom portion 3) is vertically provided so as to surround the liquid introduction tube 6. Since the liquid kneaded material that has flowed into the measuring tank 4 from the liquid introduction pipe 6 is guided to the lower side of the measuring tank 4 by the cover pipe 7, the liquid level above the measuring tank 4 is the inflowing liquid mixture. As a result, the measuring tank 4 does not sway and shake, and the mass of the liquid kneaded material in the measuring tank 4 can be stably measured by the load cell 23.

In the weighing device 1 according to the embodiment, the weighing tank 4 is supported by being suspended from the horizontal beam 21a of the gantry 21 by the measurement support member 25 of the support weighing means 22, but instead of this. A plurality of support legs are fixedly provided around the trunk part 2 and the bottom part 3 of the measuring tank 4, and the support legs are placed on an appropriate support member provided on the mount 21 via a measuring instrument such as a load cell. And may be supported.
Further, the measuring tank 4 stores a liquid kneaded material obtained by mixing coal ash as powder aggregate with molten sulfur as a high-temperature liquid. However, the present invention is not limited to this, and powder in molten sulfur. It can store liquid incinerated ash, steel slag, silica sand, cement, crushed shells, etc. as liquid aggregate, molten sulfur that does not contain powdered aggregate, and melted as high-temperature liquid It is also possible to store a liquid kneaded material in which a powdery aggregate is mixed with a resin, a liquid synthetic resin that does not contain a powdered aggregate, and the like.

It is a top view which shows the measuring device which concerns on one embodiment of this invention. It is also a front view. It is the side view which showed a part in section similarly. It is an enlarged view of the A section in FIG. It is a systematic diagram which shows an example of the sulfur solidified material manufacturing plant to which the measurement which concerns on one embodiment of this invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Metering device 2 Body part 3 Bottom part 4 Measuring tank 5 Top cover 6 Liquid introduction pipe 7 Cover pipe 8 Inert gas introduction pipe 9 Breather valve 12 Opening / closing valve 14 Oil jacket (oil jacket)
15 Oil jacket for oil passage (oil jacket)
17 Liquid discharge pipe 18 Liquid supply pipe 20 Bracket 21 Mounting base 21a Horizontal beam 22 Support weighing means 23 Load cell 24 Suspension fitting 25 Measurement support member

Claims (4)

  A sealable measuring tank having a liquid inlet and a liquid outlet and containing a high-temperature liquid therein, heating means provided on the outer periphery of the measuring tank for heating the high-temperature liquid in the measuring tank, and the measuring tank supported by a gantry And a supporting weighing means for measuring the load transmitted to the gantry via the weighing tank, and an inert gas provided at the upper part of the weighing tank for replacing the air in the upper space in the weighing tank with an inert gas. A metering device comprising an inlet and a breather valve.   In the supporting and weighing means, a plurality of measurement support members, each of which is arranged at equal intervals in the circumferential direction of the weighing tank, are formed by connecting a pair of suspension fittings that rotate in directions perpendicular to each other above and below the load cell. One of the suspension brackets of the support member is fixed to the gantry, the other of the suspension bracket is fixed to the upper end of the weighing tank, and the weighing tank is suspended from and supported by the gantry. Item 2. The weighing device according to Item 1.   The heating means includes a tank oil jacket through which hot oil flows on the outer peripheral side of the measuring tank, and includes an outer periphery of a liquid supply pipe connected to a liquid inlet of the measuring tank and an outer periphery of an on-off valve connected to a liquid outlet. The hot oil introduced into the tank oil jacket from one of the provided oil jackets for the flow path is configured to flow out to the other of the oil jacket for the flow path. Or the measuring apparatus of 2. At the liquid inlet of the measuring tank, a short liquid introduction pipe inserted inside from the upper lid of the measuring tank is suspended, and a long cover pipe having a larger diameter and surrounding the liquid introduction pipe is weighed. The weighing apparatus according to any one of claims 1 to 3, wherein the weighing apparatus extends vertically to an intermediate portion in the height direction of the tank.

Images