CN112757494A - Concrete admixture leakage-proof type metering system and concrete admixture metering method - Google Patents
Concrete admixture leakage-proof type metering system and concrete admixture metering method Download PDFInfo
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- CN112757494A CN112757494A CN202110107782.9A CN202110107782A CN112757494A CN 112757494 A CN112757494 A CN 112757494A CN 202110107782 A CN202110107782 A CN 202110107782A CN 112757494 A CN112757494 A CN 112757494A
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- butterfly valve
- admixture
- guide pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/12—Supplying or proportioning liquid ingredients
- B28C7/122—Supplying or proportioning liquid ingredients by means of a measuring chamber, e.g. container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/12—Supplying or proportioning liquid ingredients
- B28C7/126—Supply means, e.g. nozzles
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Abstract
The invention discloses a concrete admixture leakage-proof type metering system and a concrete admixture metering method, wherein the system comprises an admixture weighing device, a guide pipe, a first butterfly valve, a second butterfly valve, a first electromagnetic valve, a second electromagnetic valve and a central control device, wherein the guide pipe is provided with three sections which are respectively a first guide pipe section, a second guide pipe section and a third guide pipe section; the discharge port of the additive weighing device is connected with a first guide pipe, the first guide pipe is connected with a second guide pipe through a first butterfly valve, and the second guide pipe is connected with a third guide pipe through a second butterfly valve; the first butterfly valve is connected with the first electromagnetic valve, the second butterfly valve is connected with the second electromagnetic valve, and the central control device is respectively connected with the admixture weighing device, the first butterfly valve, the second butterfly valve, the first electromagnetic valve and the second electromagnetic valve. The invention has simple structure, safety and reliability, and can ensure that no metering leakage accident occurs, thereby avoiding the quality problem caused by the metering leakage accident.
Description
Technical Field
The invention relates to a concrete admixture leakage-proof type metering system and a concrete admixture metering method, and belongs to the field of concrete production.
Background
The concrete admixture is a substance added for improving and adjusting the performance of concrete, and is a liquid polycarboxylic acid water reducing agent, and the admixture is beneficial to improving various performances of the concrete. However, when the admixture is excessively mixed, the problems of segregation, bottom formation, excessive retardation and even no coagulation of the concrete can be caused, the quality of the concrete is seriously influenced, and the application to an engineering structure can cause millions of economic losses. Therefore, how to prevent the leakage of the concrete admixture metering system and how to stop the admixture super-doping caused by the metering system is a key problem for ensuring the concrete quality.
The concrete admixture weigher is usually located above the water weigher. When carrying out the measurement, the admixture at first gets into the admixture and calls to measure, and the back of accomplishing the measurement makes the admixture flow into the water balance again, and current admixture weighing hopper back cover is a butterfly valve usually, and this butterfly valve is in the top of water balance to the instrument of admixture balance shows weight and can begin to weigh work for zero hour usually, but this kind of metering system has several problems: 1) when the back cover butterfly valve is used for a long time, the back cover butterfly valve is corroded by the additive to generate holes or damage, so that the situations of leakage of an additive scale, inaccurate weighing and the like are caused, the additive is over-doped in concrete, and the additive is wasted for a long time; 2) if the butterfly valve is clamped and cannot be closed in place and is weighing, the admixture is seriously weighed excessively and directly leaked into the water scale, and an excessive numerical value cannot be judged, so that the serious excessive admixture of the concrete admixture is caused; 3) if the gas circuit is in fault, the butterfly valve is not closed in place, and the result similar to the second condition also occurs; 4) if the butterfly valve cannot be closed in place due to the failure of the electromagnetic valve, the result similar to the second condition can also occur; 5) the same consequences can occur if the butterfly valve is closed, but is not actually closed in place, but a closed in place signal is given.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides the concrete admixture leakage-proof type metering system which is simple in structure, safe and reliable and can ensure that metering leakage accidents cannot occur, so that the quality problem caused by the metering leakage accidents is avoided.
Another object of the invention is to provide a concrete admixture metering method, which is realized based on the concrete admixture leakage-proof type metering system.
The purpose of the invention can be achieved by adopting the following technical scheme:
a concrete admixture leakage-proof metering system comprises an admixture weighing device, a guide pipe, a first butterfly valve, a second butterfly valve, a first electromagnetic valve, a second electromagnetic valve and a central control device, wherein the guide pipe is provided with three sections which are respectively a first guide pipe, a second guide pipe and a third guide pipe;
the discharge port of the additive weighing device is connected with a first guide pipe, the first guide pipe is connected with a second guide pipe through a first butterfly valve, and the second guide pipe is connected with a third guide pipe through a second butterfly valve; the first butterfly valve is connected with the first electromagnetic valve, the second butterfly valve is connected with the second electromagnetic valve, and the central control device is respectively connected with the admixture weighing device, the first butterfly valve, the second butterfly valve, the first electromagnetic valve and the second electromagnetic valve.
Further, admixture weighing device includes admixture funnel, admixture pump, weighing transducer, support and pump line, the discharge gate and the first section honeycomb duct of admixture funnel bottom are connected, the one end of pump line stretches into the admixture funnel from the pan feeding mouth at admixture funnel top, and the other end and the admixture pump of pump line are connected, weighing transducer and admixture funnel are connected, the support is used for supporting admixture funnel and weighing transducer, admixture pump and weighing transducer are connected with well accuse device respectively.
Furthermore, the discharge hole at the bottom of the additive funnel is in an inverted cone shape.
Further, the support is an iron stand support.
Furthermore, first butterfly valve and second butterfly valve are pneumatic butterfly valve, and first butterfly valve passes through first trachea and is connected with first solenoid valve, and the second butterfly valve passes through the second trachea and is connected with the second solenoid valve.
Furthermore, the first butterfly valve and the second butterfly valve are installed in a reverse axisymmetrical mode.
Furthermore, the first butterfly valve is provided with a first travel switch, the second butterfly valve is provided with a second travel switch, and the first travel switch and the second travel switch are connected in series and then are connected with the central control device.
Furthermore, the first electromagnetic valve and the second electromagnetic valve are connected with the central control device through signal lines.
Further, the central control device is a programmable logic controller.
The other purpose of the invention can be achieved by adopting the following technical scheme:
the method for metering the concrete admixture is realized based on the concrete admixture leakage-proof metering system, and comprises the following steps:
the central control device sends out a butterfly valve closing indication signal which is respectively transmitted to the first electromagnetic valve and the second electromagnetic valve;
the first electromagnetic valve and the second electromagnetic valve enable the first butterfly valve and the second butterfly valve to complete closing actions according to butterfly valve closing indication signals sent by the central control device;
after the first butterfly valve and the second butterfly valve are closed in place, the butterfly valve closing in-place signals are fed back through respective travel switches, and the butterfly valve closing in-place signals of the travel switches are transmitted back to the central control device in a series connection mode;
if the first butterfly valve and the second butterfly valve are closed and the butterfly valve closing in-place signal is correctly fed back, the central control device sends an additive weighing instruction to an additive pump of the additive weighing device to complete the metering of the additive;
if at least one of the first butterfly valve and the second butterfly valve does not feed back a butterfly valve closing in-place signal, the central control device does not send an additive weighing indication.
Compared with the prior art, the invention has the following beneficial effects:
1. the system is provided with two butterfly valves and three guide pipes, wherein the two butterfly valves are respectively a first butterfly valve and a second butterfly valve, the three guide pipes are respectively a first guide pipe, a second guide pipe and a third guide pipe, the first guide pipe is connected with a discharge port of an additive weighing device, the first guide pipe is connected with the second guide pipe through the first butterfly valve, the second guide pipe is connected with the third guide pipe through the second butterfly valve, the first butterfly valve and the second butterfly valve are used as bottom seals, and double-butterfly valve bottom seals are adopted to realize the series connection of the double-butterfly valves.
2. The two butterfly valves of the system are both pneumatic butterfly valves and are respectively connected with corresponding electromagnetic valves through air pipes, two sets of independent air passages and electromagnetic valves are adopted for control, the two butterfly valves operate independently, additive leakage caused by butterfly valve reaction due to the problem of failure of the electromagnetic valves or one air passage is effectively reduced or even eliminated, and even if one of the butterfly valves fails, the other butterfly valve still works independently, so that the whole system can still be kept stable.
3. The two butterfly valves of the system are both provided with travel switches, and the two travel switches are connected in series, so that the feedback of the butterfly valve closing in-place signal is fed back to the central control device in a series connection mode, the double butterfly valves are ensured to be in a normal state, otherwise, the subsequent work is not carried out, and the implementation effect of the system is ensured.
4. The two butterfly valves of the system are arranged in a reverse axisymmetric mode, so that the admixture weighing device is more balanced and convenient to install.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a structural view showing a leak-proof type measuring system for a concrete admixture according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a transmission control of a weighing start signal according to an embodiment of the present invention.
FIG. 3 is a flow chart showing a method for measuring a concrete admixture according to an embodiment of the present invention.
The system comprises a 1-additive weighing device, a 101-additive funnel, a 102-additive pump, a 103-weight sensor, a 104-support, a 105-pump pipe, a 2-first butterfly valve, a 201-first travel switch, a 3-second butterfly valve, a 301-second travel switch, a 4-first electromagnetic valve, a 5-second electromagnetic valve, a 6-central control device, a 7-first guide pipe, an 8-second guide pipe, a 9-third guide pipe, a 10-first air pipe and a 11-second air pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Example (b):
the bottom seal of the additive weighing hopper in the prior art is usually a butterfly valve which is arranged above a water scale, and the weighing operation can be started when the weight displayed by an instrument of the additive weighing hopper is zero. In the prior art, the additive hopper is usually a single-layer back cover, only one path of signal control is provided, weighing is usually started when a weighing instrument displays zero, the back cover cannot be generated in a reaction, or a butterfly valve cannot be damaged, and the butterfly valve cannot be closed in place due to the conditions of electromagnetic valve faults, gas path faults, butterfly valve faults and the like.
As shown in FIG. 1, the concrete admixture leakage-proof type metering system of the embodiment comprises an admixture weighing device 1, a guide pipe, a first butterfly valve 2, a second butterfly valve 3, a first electromagnetic valve 4, a second electromagnetic valve 5 and a central control device 6, wherein the guide pipe is provided with three sections which are respectively a first section of guide pipe 7, a second section of guide pipe 8 and a third section of guide pipe 9; the central control device 6 is a Programmable Logic Controller (PLC).
A discharge port of the additive weighing device 1 is connected with a first guide pipe 7, the first guide pipe 7 is connected with a second guide pipe 8 through a first butterfly valve 2, and the second guide pipe 8 is connected with a third guide pipe 9 through a second butterfly valve 3; first butterfly valve 2 is connected with first solenoid valve 4, and second butterfly valve 3 is connected with second solenoid valve 5, and well accuse device 6 is connected with admixture weighing device 1, first butterfly valve 2, second butterfly valve 3, first solenoid valve 4, second solenoid valve 5 respectively.
Further, the admixture weighing device 1 comprises an admixture funnel 101, an admixture pump 102, a weight sensor 103, a support 104 and a pump pipe 105, wherein a discharge port at the bottom of the admixture funnel 101 is connected with the first section of the guide pipe 7, one end of the pump pipe 105 extends into the admixture funnel 101 from a feed port at the top of the admixture funnel 101, the other end of the pump pipe 105 is connected with the admixture pump 102, the weight sensor 103 is connected with the admixture funnel 101, the support 104 is used for supporting the admixture funnel 101 and the weight sensor 103, the whole admixture weighing device 1 is in a suspended state, the admixture pump 102 and the weight sensor 103 are respectively connected with the central control device 6, the admixture pump 102 is used for starting to work after receiving a weighing instruction of the central control device 6, stopping to work after receiving a weighing instruction of the central control device 6, and the weight sensor 103 is used for detecting the whole weights of the admixture funnel 101 and the admixture, and the weight of the additive funnel 101 is subtracted from the weight detection value of the weight sensor 103, so that the measured value of the additive is obtained.
Specifically, a discharge hole at the bottom of the additive funnel 101 is in an inverted cone shape, the first guide pipe 7 is connected with the lower part of the inverted cone shape, and the support 104 is an iron stand support; the first butterfly valve 2 and the second butterfly valve 3 are used as bottom seals, the first butterfly valve 2 is connected below a first guide pipe 7, a second guide pipe 8 is connected below the first butterfly valve 2, the second butterfly valve 3 is connected below the second guide pipe 8, a third guide pipe 9 is connected below the second butterfly valve 3, and the lower end of the third guide pipe 9 extends into the water scale; the first butterfly valve 2 and the second butterfly valve 3 are installed in a reverse axisymmetric mode, specifically, the valve body of the first butterfly valve 2 is located at the right position, the valve body of the second butterfly valve 3 is located at the left position, and reverse axisymmetric is formed between the two positions, so that the valve body of the first butterfly valve 2 can be located at the left position, and correspondingly, the valve body of the second butterfly valve 3 is located at the right position, so that the additive weighing device 1 can be more balanced and is convenient to install; the first electromagnetic valve 4 and the second electromagnetic valve 5 are both connected with a central control device 6 through signal lines.
Further, first butterfly valve 2 and second butterfly valve 3 are pneumatic butterfly valves, first butterfly valve 2 is connected with first solenoid valve 4 through first trachea 10, second butterfly valve 3 is connected with second solenoid valve 5 through second trachea 11, two butterfly valves operate independently, effectively reduce or even stop one because of the problem of solenoid valve or a gas circuit trouble cause the additive that the butterfly valve reaction often leads to leak, even if there is a trouble among them, another butterfly valve still independently works, whole system still can remain stable.
Furthermore, the first butterfly valve 2 is provided with a first travel switch 201, the second butterfly valve 3 is provided with a second travel switch 301, the first travel switch 201 and the second travel switch 301 are connected in series and then connected with the central control device 6, and the feedback of the butterfly valve closing in-place signal is fed back to the central control device 6 in a series connection mode, so that the double butterfly valves are in a normal state, otherwise, subsequent work is not performed, and the implementation effect of the system is ensured.
As shown in FIGS. 1 to 3, the present embodiment provides a method for measuring a concrete admixture, which is implemented based on the above-mentioned concrete admixture leakage-proof type measuring system, and comprises the following steps:
and S1, the central control device 6 sends out a butterfly valve closing indication signal which is respectively transmitted to the first electromagnetic valve 4 and the second electromagnetic valve 5.
Specifically, when the previous tank is weighed and then the material feeding (discharging) is finished, the sensor instrument of the water balance displays that the weight is zero, namely the system considers that the additive in the previous tank is discharged and then finished, the central control device 6 sends an indication signal for closing the butterfly valve so as to start to prepare for the weighing of the next tank.
And S2, the first electromagnetic valve 4 and the second electromagnetic valve 5 enable the first butterfly valve 2 and the second butterfly valve 3 to complete closing actions according to the butterfly valve closing indication signals sent by the central control device 6.
And S3, after the first butterfly valve 2 and the second butterfly valve 3 are closed in place, the butterfly valve closing in-place signals are fed back through the first travel switch 201 and the second travel switch 301 respectively, and the butterfly valve closing in-place signals of the first travel switch 201 and the second travel switch 301 are transmitted back to the central control device 6 in a series connection mode.
S4, if the first butterfly valve 2 and the second butterfly valve 3 are closed and the butterfly valve closing in-place signal is correctly fed back, the central control device 6 sends an admixture weighing instruction to the admixture pump 102 of the admixture weighing device 1, receives the weight detection value of the weight sensor 103, and finishes the metering of the admixture according to the weight detection value of the weight sensor 103.
S5, if at least one of the first butterfly valve 2 and the second butterfly valve 3 does not feed back a butterfly valve closing in-place signal, the central control device 6 does not send an admixture weighing indication.
Wherein, at least one of the first butterfly valve 2 and the second butterfly valve 3 does not feed back the butterfly valve closing in-place signal means that the first butterfly valve 2 does not feed back the butterfly valve closing in-place signal, or the second butterfly valve 3 does not feed back the butterfly valve closing in-place signal, or the first butterfly valve 2 and the second butterfly valve 3 do not feed back the butterfly valve closing in-place signal.
In conclusion, the system is provided with two butterfly valves and three guide pipes, the two butterfly valves are respectively a first butterfly valve and a second butterfly valve, the three guide pipes are respectively a first guide pipe, a second guide pipe and a third guide pipe, the first guide pipe is connected with a discharge port of the additive weighing device, the first guide pipe is connected with the second guide pipe through the first butterfly valve, the second guide pipe is connected with the third guide pipe through the second butterfly valve, the first butterfly valve and the second butterfly valve are used as bottom seals, and double-butterfly-valve bottom seals are adopted to realize double-butterfly-valve series connection.
The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept within the scope of the present invention, which is disclosed by the present invention, and the equivalent or change thereof belongs to the protection scope of the present invention.
Claims (10)
1. A concrete admixture leakage-proof type metering system is characterized by comprising an admixture weighing device, a guide pipe, a first butterfly valve, a second butterfly valve, a first electromagnetic valve, a second electromagnetic valve and a central control device, wherein the guide pipe is provided with three sections which are respectively a first guide pipe section, a second guide pipe section and a third guide pipe section;
the discharge port of the additive weighing device is connected with a first guide pipe, the first guide pipe is connected with a second guide pipe through a first butterfly valve, and the second guide pipe is connected with a third guide pipe through a second butterfly valve; the first butterfly valve is connected with the first electromagnetic valve, the second butterfly valve is connected with the second electromagnetic valve, and the central control device is respectively connected with the admixture weighing device, the first butterfly valve, the second butterfly valve, the first electromagnetic valve and the second electromagnetic valve.
2. The concrete admixture leakage-proof type metering system of claim 1, wherein the admixture weighing device comprises an admixture funnel, an admixture pump, a weight sensor, a support and a pump pipe, a discharge port at the bottom of the admixture funnel is connected with the first section of guide pipe, one end of the pump pipe extends into the admixture funnel from a feed inlet at the top of the admixture funnel, the other end of the pump pipe is connected with the admixture pump, the weight sensor is connected with the admixture funnel, the support is used for supporting the admixture funnel and the weight sensor, and the admixture pump and the weight sensor are respectively connected with a central control device.
3. The concrete admixture leakage-proof type metering system of claim 2, wherein a discharge port at the bottom of the admixture funnel is in an inverted cone shape.
4. The concrete admixture leakage-proof type metering system of claim 2, wherein the support is an iron stand support.
5. The concrete admixture leakage-proof type metering system of any one of claims 1 to 4, wherein the first butterfly valve and the second butterfly valve are both pneumatic butterfly valves, the first butterfly valve is connected with the first electromagnetic valve through a first air pipe, and the second butterfly valve is connected with the second electromagnetic valve through a second air pipe.
6. The concrete admixture leakage-proof type metering system of any one of claims 1 to 4, wherein the first butterfly valve and the second butterfly valve are installed in a reverse axisymmetric manner.
7. The concrete admixture leakage-proof type metering system of any one of claims 1 to 4, wherein the first butterfly valve is provided with a first travel switch, the second butterfly valve is provided with a second travel switch, and the first travel switch and the second travel switch are connected in series and then connected with a central control device.
8. The concrete admixture leakage-proof type metering system of any one of claims 1 to 4, wherein the first electromagnetic valve and the second electromagnetic valve are connected with a central control device through signal lines.
9. The concrete admixture leakage-proof type metering system of any one of claims 1 to 4, wherein the central control device is a programmable logic controller.
10. A method for measuring a concrete admixture, which is implemented based on the concrete admixture leakage-proof type measuring system according to any one of claims 1 to 9, and which comprises:
the central control device sends out a butterfly valve closing indication signal which is respectively transmitted to the first electromagnetic valve and the second electromagnetic valve;
the first electromagnetic valve and the second electromagnetic valve enable the first butterfly valve and the second butterfly valve to complete closing actions according to butterfly valve closing indication signals sent by the central control device;
after the first butterfly valve and the second butterfly valve are closed in place, the butterfly valve closing in-place signals are fed back through respective travel switches, and the butterfly valve closing in-place signals of the travel switches are transmitted back to the central control device in a series connection mode;
if the first butterfly valve and the second butterfly valve are closed and the butterfly valve closing in-place signal is correctly fed back, the central control device sends an additive weighing instruction to an additive pump of the additive weighing device to complete the metering of the additive;
if at least one of the first butterfly valve and the second butterfly valve does not feed back a butterfly valve closing in-place signal, the central control device does not send an additive weighing indication.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110107782.9A CN112757494A (en) | 2021-01-27 | 2021-01-27 | Concrete admixture leakage-proof type metering system and concrete admixture metering method |
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| CN202110107782.9A CN112757494A (en) | 2021-01-27 | 2021-01-27 | Concrete admixture leakage-proof type metering system and concrete admixture metering method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618924A (en) * | 2021-07-08 | 2021-11-09 | 杭州江河机电装备工程有限公司 | Additive weighing device |
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2021
- 2021-01-27 CN CN202110107782.9A patent/CN112757494A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618924A (en) * | 2021-07-08 | 2021-11-09 | 杭州江河机电装备工程有限公司 | Additive weighing device |
| CN113618924B (en) * | 2021-07-08 | 2022-12-23 | 杭州江河机电装备工程有限公司 | Additive weighing device |
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