CN204551188U - A kind of pitch metering system - Google Patents
A kind of pitch metering system Download PDFInfo
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- CN204551188U CN204551188U CN201520160642.8U CN201520160642U CN204551188U CN 204551188 U CN204551188 U CN 204551188U CN 201520160642 U CN201520160642 U CN 201520160642U CN 204551188 U CN204551188 U CN 204551188U
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- bitumenpump
- way cock
- communicated
- pitch
- weighing device
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Abstract
A kind of pitch metering system, comprise control device, pitch storage tank, weighing device, bitumenpump and three way cock, the input port of described bitumenpump is communicated with described pitch storage tank, and delivery outlet is communicated with the input port of described three way cock, and the drive motors of described bitumenpump is provided with rotational speed governor; First delivery outlet of described three way cock is communicated with described weighing device, and the second delivery outlet is communicated with described pitch storage tank; Described control device is connected with described weighing device, rotational speed governor and three way cock respectively, the weight signal that can feed back according to described weighing device controls the rotating speed of described bitumenpump and the switching of described three way cock, compared with prior art, the utility model effectively solves three way cock and switches and cause pump inner high voltage to damage the problem of bitumenpump, well solves again bitumenpump and makes up the difference and have influence on the problem in bitumenpump application life.
Description
Technical field
The utility model relates to a kind of pitch metering system for asphalt mixing plant.
Background technology
Known, pitch metering system mainly comprises control device, pitch storage tank, weighing device, bitumenpump and three way cock, and the input port of bitumenpump is communicated with pitch storage tank, and delivery outlet is communicated with the input port of three way cock; First delivery outlet of three way cock is communicated with weighing device, and the second delivery outlet is communicated with pitch storage tank; Control device is connected with weighing device, bitumenpump and three way cock respectively, and can control the start/stop of bitumenpump and the switching of three way cock according to the metering signal of weighing device feedback, existing method of measurement mainly contains following two kinds:
The first: before pitch metering, bitumenpump works always, and three way cock is in oil return position (the first delivery outlet blocks, the second delivery outlet conducting); Metering starts, three way cock is switched to be got oil level and puts (the first delivery outlet conducting, second delivery outlet block), and asphalt weigher weight increases, when weight reach fast to value time, three way cock according to the time of making up the difference of setting oil return position and get oil level put between switch back and forth; When asphalt weigher weight reaches drop value, three way cock is switched to oil return position, and metering completes.There is following shortcoming in said method: during pitch metering, in the process that three way cock switches back and forth, causes instantaneous pressure in pump excessive, switches frequently and cause bitumenpump oil sealing to damage, bitumenpump oil leakage phenomenon occurs.
The second: before pitch metering, bitumenpump works always, and three way cock is in oil return position; Metering starts, and three way cock is switched to be got oil level and put, and asphalt weigher weight increases, when weight reach fast to value time, bitumenpump opens according to the time of making up the difference of setting/stops and makes up the difference; When asphalt weigher weight reaches drop value, bitumenpump stops, and time delay 2-3 second, three way cock is switched to oil return position, then time delay 2-3 second, and bitumenpump starts, and metering completes.The advantage of the method: in the one-period of pitch metering, three way cock has only carried out once switching, and greatly reduces because the switching of three way cock is to the infringement of bitumenpump; Shortcoming: in order to ensure measuring accuracy, must have the action of making up the difference, and this action changes into is gone to perform by bitumenpump, can shorten the application life of electric machine of asphalt pump like this.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, provides that a kind of precision is high, the pitch metering system of long service life.
The purpose of this utility model realizes by following technical solution:
A kind of pitch metering system, comprise control device, pitch storage tank, weighing device, bitumenpump and three way cock, it is characterized in that: the input port of described bitumenpump is communicated with described pitch storage tank, delivery outlet is communicated with the input port of described three way cock, and the drive motors of described bitumenpump is provided with rotational speed governor; First delivery outlet of described three way cock is communicated with described weighing device, and the second delivery outlet is communicated with described pitch storage tank; Described control device is connected with described weighing device, rotational speed governor and three way cock respectively, and the weight signal that can feed back according to described weighing device controls the rotating speed of described bitumenpump and the switching of described three way cock.
Further, described rotational speed governor is motor inverter.
Further, described drive motors is servomotor, and described rotational speed governor is servomotor controller.
The utility model has following beneficial effect:
Before pitch metering, pitch circulation pump works with low speed always, and three way cock is in oil return position; Metering starts, and three way cock is switched to be got oil level and put, and bitumenpump is switched at a high speed, and the pitch weight in weighing device increases, when weight reach fast to value time, bitumenpump is switched to low speed and makes up the difference; When pitch weight reaches drop value, three way cock is switched to oil return position, and metering completes.Compared with prior art, the utility model effectively solves three way cock and switches and cause pump inner high voltage to damage the problem of bitumenpump, well solves again bitumenpump and makes up the difference and have influence on the problem in bitumenpump application life.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the flow chart of the utility model method of measurement.
Detailed description of the invention
With reference to shown in Fig. 1, a kind of pitch metering system, comprises control device 5, pitch storage tank 1, weighing device 4, bitumenpump 2 and three way cock 3.
The input port of bitumenpump 2 is communicated with pitch storage tank 1 by pipeline, and delivery outlet is communicated with by the input port of pipeline with three way cock 3, and the drive motors of bitumenpump 2 is provided with frequency converter; First delivery outlet of three way cock 3 is communicated with weighing device 4 by pipeline, and the second delivery outlet is communicated with pitch storage tank 1 by pipeline; Control device is connected with weighing device 4, frequency converter and three way cock 3 respectively, and the weight signal that can feed back according to weighing device 4 controls the rotating speed of bitumenpump 2 and the switching of three way cock 3.
With reference to shown in Fig. 2, specific works mode of the present utility model is: before pitch metering, bitumenpump 2 works with low speed always, and three way cock 3 is in oil return position (the first delivery outlet blocks, the second delivery outlet conducting); Metering starts, control device 5 controls three way cock 3 and is switched to and gets oil level and put (the first delivery outlet conducting, second delivery outlet blocks), bitumenpump 2 is switched at a high speed, pitch weight in weighing device 4 increases fast, weighing device 4 gathers pitch weight and feeds back to control device 5, when weight reach fast to value time, control device 5 controls bitumenpump 2 and is switched to low speed and makes up the difference; When pitch weight reaches drop value, control device 5 controls three way cock 3 and is switched to oil return position, and metering completes.
The above, be only preferred embodiment of the present utility model, therefore can not limit with this scope that the utility model implements, the equivalence namely done according to the utility model claim and description change with modify, all should still belong in scope that the utility model patent contains.
Claims (3)
1. a pitch metering system, comprise control device, pitch storage tank, weighing device, bitumenpump and three way cock, it is characterized in that: the input port of described bitumenpump is communicated with described pitch storage tank, delivery outlet is communicated with the input port of described three way cock, and the drive motors of described bitumenpump is provided with rotational speed governor; First delivery outlet of described three way cock is communicated with described weighing device, and the second delivery outlet is communicated with described pitch storage tank; Described control device is connected with described weighing device, rotational speed governor and three way cock respectively, and the weight signal that can feed back according to described weighing device controls the rotating speed of described bitumenpump and the switching of described three way cock.
2. a kind of pitch metering system according to claim 1, is characterized in that: described rotational speed governor is motor inverter.
3. a kind of pitch metering system according to claim 1, it is characterized in that: described drive motors is servomotor, described rotational speed governor is servomotor controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520160642.8U CN204551188U (en) | 2015-03-20 | 2015-03-20 | A kind of pitch metering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520160642.8U CN204551188U (en) | 2015-03-20 | 2015-03-20 | A kind of pitch metering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204551188U true CN204551188U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520160642.8U Active CN204551188U (en) | 2015-03-20 | 2015-03-20 | A kind of pitch metering system |
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| CN (1) | CN204551188U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672097A (en) * | 2016-01-25 | 2016-06-15 | 广西大学 | Special feeding device and feeding method for compound Buton rock modified asphalt capable of being measured and weighed |
-
2015
- 2015-03-20 CN CN201520160642.8U patent/CN204551188U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672097A (en) * | 2016-01-25 | 2016-06-15 | 广西大学 | Special feeding device and feeding method for compound Buton rock modified asphalt capable of being measured and weighed |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 362000 No.1 intelligent equipment Industrial Park, Luojiang District, Heshi Town, Luojiang District, Quanzhou City, Fujian Province Patentee after: Fujian tietuo Machinery Co., Ltd Address before: 362011 West Industrial Zone, Luojiang District, Fujian, Quanzhou Patentee before: FUJIAN TIETUO MACHINERY Co.,Ltd. |