CN214699025U - Variable-frequency belt pulley combined transmission mechanism and sludge screw pump thereof - Google Patents
Variable-frequency belt pulley combined transmission mechanism and sludge screw pump thereof Download PDFInfo
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- CN214699025U CN214699025U CN202120335076.5U CN202120335076U CN214699025U CN 214699025 U CN214699025 U CN 214699025U CN 202120335076 U CN202120335076 U CN 202120335076U CN 214699025 U CN214699025 U CN 214699025U
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Abstract
The utility model discloses a variable-frequency belt pulley combined transmission mechanism and a sludge screw pump thereof, which comprise a constant-speed belt pulley structure; the input side of the constant-speed pulley structure is connected with a power frequency motor, and the output side of the constant-speed pulley structure is connected with a reduction box; and the frequency conversion device is used for carrying out frequency conversion speed regulation on the power frequency motor. The utility model discloses utilize power frequency motor and belt drive's structure, one set of drive mechanism that combines together variable frequency speed governing and V belt pulley transmission technique.
Description
Technical Field
The utility model relates to a drive mechanism and mud screw pump thereof, more specifically say, relate to a frequency conversion formula belt pulley joint drive mechanism and mud screw pump thereof.
Background
The sludge screw pump is used as important equipment in the water service field, and the sludge screw pump is mainly used for sludge treatment. The sludge screw pump is a single screw type transport pump, and the main working principle of the sludge screw pump is that after the speed of a motor is changed through a gearbox, the gearbox drives a screw to rotate, so that the effect of sucking and discharging liquid is achieved. At present, the sludge screw pump applied to the water service field mainly has two kinds: a speed regulation mode of a sludge screw pump mainly adopts speed regulation of a speed regulation wheel; the other speed regulating mode of the sludge screw pump mainly adopts frequency conversion speed regulation. The speed regulation principle of the two sludge screw pumps is as follows:
referring to fig. 1 and 2, the sludge screw pump 1 of the speed regulating wheel type adopts a speed regulating mode of the speed regulating wheel 2, the output end of the power frequency motor 3 is connected with the main belt pulley 4, the input end of the speed reducing box 5 is connected with the driven belt pulley 6 and is connected with the speed regulating belt 7 for transmission, and the width of the belt pulley of the speed regulating belt 7 can be changed by adjusting the speed regulating mechanism 8 arranged on the main belt pulley 4, namely the rotating speed can be freely changed, so as to meet the rotating speed required by the sludge screw pump 1 at a constant flow rate.
The speed regulation mode of the speed regulation wheel needs to set the driving rotating speed and flow rate required by the sludge screw pump 1 by manually regulating the speed regulation wheel 2, has higher operation requirement on operators, and cannot realize remote speed regulation and flow regulation. Meanwhile, the speed regulating wheel 2 and the speed regulating belt 7 are both used as wearing parts of the sludge screw pump, fatigue wear can be generated after the sludge screw pump continuously operates for a certain time, the sludge screw pump needs to be updated and replaced forcibly, and the follow-up maintenance cost is high.
Referring to fig. 3 and 4, the sludge screw pump 9 adopts a frequency conversion speed regulation mode, the frequency conversion motor 10 is directly connected with the reduction gearbox 11, and the frequency conversion motor 10 is subjected to frequency regulation through the frequency converter 12, so that the purpose of changing the rotating speed of the frequency conversion motor 10 is realized, and the rotating speed required by the sludge screw pump 9 in constant flow is met.
The frequency conversion speed regulation mode reduces intermediate links such as a speed regulation wheel and a speed regulation belt, utilizes the control of the frequency converter 12 to enable the speed regulation and flow regulation to be carried out remotely, and is a speed regulation principle commonly adopted in the matching design of a sludge screw pump in the field at present.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect that exists among the prior art, the utility model aims at providing a frequency conversion formula belt pulley joint drive mechanism and mud screw pump thereof utilizes power frequency motor and belt drive's structure, with one set of drive mechanism that frequency conversion speed governing and V-belt pulley transmission technique combined together, solve among the prior art unable long-range speed governing and transfer and the vulnerable problem of speed governing wheel, speed governing belt.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
on one hand, the variable-frequency belt pulley combined transmission mechanism comprises a constant-speed belt pulley structure;
the input side of the constant-speed pulley structure is connected with a power frequency motor, and the output side of the constant-speed pulley structure is connected with a reduction box; and
and the frequency conversion device is used for carrying out frequency conversion and speed regulation on the power frequency motor.
Preferably, the fixed-speed belt pulley structure comprises a housing, and a main belt pulley, a V-belt and a secondary belt pulley which are arranged in the housing;
the main belt pulley is in transmission connection with the auxiliary belt pulley through the V-belt.
Preferably, the main belt pulley is connected with the output end of the power frequency motor, and the auxiliary belt pulley is connected with the input end of the reduction gearbox.
Preferably, the main belt pulley and the auxiliary belt pulley are made of cast iron.
Preferably, the power frequency motor is provided with an independent fan.
Preferably, the frequency conversion device comprises a frequency converter control cabinet and a frequency converter arranged in the frequency converter control cabinet;
and the frequency converter is used for carrying out frequency conversion speed regulation on the power frequency motor.
On the other hand, the sludge screw pump comprises a screw pump body and the variable-frequency belt pulley combined transmission mechanism connected with the screw pump body;
the input end of the screw pump body is connected with the output end of the reduction gearbox.
Preferably, the frequency conversion device is arranged on a concrete foundation beside the screw pump body.
Preferably, a liquid inlet and a liquid outlet are arranged on the screw pump body.
Preferably, the liquid inlet is arranged at the top of the screw pump body, and the liquid outlet is arranged at the end of the screw pump body.
The utility model provides a frequency conversion formula belt pulley combined drive mechanism and mud screw pump thereof still has following several beneficial effect:
1) in the frequency conversion type belt pulley combined transmission mechanism, the main belt pulley and the auxiliary belt pulley are made of cast iron, so that the frequency conversion type belt pulley combined transmission mechanism has higher strength and is not easy to wear, and the service life is longer compared with that of a traditional speed regulating wheel under the same use working condition;
2) the utility model relates to a frequency conversion device reads through converter start/stop signal, frequency isoparametric in the combined drive mechanism of variable frequency belt pulley, with signal data upload to the host computer, realizes long-range frequency modulation speed governing, compares than traditional governing wheel, and the speed governing mode is more convenient.
Drawings
FIG. 1 is a schematic structural diagram of a conventional speed-regulating wheel type sludge screw pump;
FIG. 2 is a schematic diagram of the speed regulation of a speed regulation wheel of a sludge screw pump in the prior art;
FIG. 3 is a schematic structural diagram of a conventional variable-frequency sludge screw pump;
FIG. 4 is a schematic diagram of the frequency-conversion speed regulation of the existing frequency-conversion sludge screw pump;
FIG. 5 is a schematic structural view of the variable frequency belt pulley combination transmission mechanism and the sludge screw pump thereof;
fig. 6 is a schematic diagram of the speed regulation principle of the variable frequency belt pulley combined transmission mechanism and the sludge screw pump thereof.
Detailed Description
In order to better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the accompanying drawings and embodiments.
Referring to fig. 5, the present invention provides a variable frequency pulley combination transmission mechanism, which includes a constant speed pulley structure 20.
The input side of the constant-speed belt pulley structure 20 is connected with the industrial frequency motor 13, and the output side of the constant-speed belt pulley structure 20 is connected with the reduction box 14; and
and a frequency conversion device 30 for performing frequency conversion and speed regulation on the line-frequency motor 13.
The constant speed pulley structure 20 includes a housing 21, and a primary pulley 22, a V-belt 23, and a secondary pulley 24 provided in the housing 21.
The primary pulley 22 is in driving connection with the secondary pulley 24 via a V-belt 23.
The main belt pulley 22 is connected with the output end of the power frequency motor 13, and the auxiliary belt pulley 14 is connected with the input end of the reduction box 14.
The power frequency motor 13 is provided with an independent fan 25 to ensure that the power frequency motor 13 can effectively dissipate heat when operating at low frequency.
The frequency conversion device 30 includes a frequency converter control cabinet 31, and a frequency converter 32 disposed in the frequency converter control cabinet 31.
The frequency converter 32 is used for carrying out frequency conversion and speed regulation on the industrial frequency motor 13.
The frequency converter 32 carries out frequency conversion speed regulation on the power frequency motor 13, the power frequency motor 13 drives the main belt pulley 22, the auxiliary belt pulley 24 is driven by the V-belt 23, the reduction box 14 is driven by the auxiliary belt pulley 24, and finally frequency conversion speed regulation and belt transmission are realized.
The utility model also provides a mud screw pump, including the screw pump body 15, and be connected with the screw pump body 15 the utility model discloses variable frequency belt pulley combined drive mechanism.
The input end of the screw pump body 15 is connected with the output end of the reduction gearbox 14.
The frequency conversion device 30 is arranged on the concrete foundation 16 beside the screw pump body 15.
The screw pump body 15 is provided with a liquid inlet 17 and a liquid outlet 18, the liquid inlet 17 is arranged at the top of the screw pump body 15, and the liquid outlet 18 is arranged at the end part of the screw pump body 15.
As shown in fig. 6, when the sludge screw pump of the present invention is in operation, the frequency converter 32 performs frequency conversion speed regulation on the power frequency motor 13, the power frequency motor 13 drives the main belt pulley 22, the driven belt pulley 24 is driven by the v-belt 23, the reduction box 14 is driven by the driven belt pulley 24, and finally the reduction box 14 drives the screw pump body 15 to realize frequency conversion speed regulation.
The utility model discloses constant speed belt pulley structure 20 among the variable frequency formula belt pulley combined drive mechanism can be according to the utility model discloses mud screw pump actual demand carries out corresponding drive ratio and selects. For example:
the rated flow of the sludge screw pump of the utility model is 100m3When the speed is 230r/min, the required driving speed is 750r/min, if the speed is selected according to the 1:3 transmission ratio of the fixed speed pulley structure 20, the motor speed is equal to the main belt pulley 22 speed and is equal to 3 times of the auxiliary belt pulley 24 speed, namely, the main belt pulley 22 speed is 750r/min, the auxiliary belt pulley 24 speed is 250r/min, thereby the flow of the sludge screw pump reaches 100m3The requirement of/h.
If 1: 1, the rotating speed of the motor is equal to the rotating speeds of the main belt pulley 22 and the secondary belt pulley 24 and is 750r/min, and the required driving rotating speed is adjusted to 230r/min by adjusting the frequency of the frequency converter 32.
If the transmission ratio of 3:1 of the constant speed pulley structure 20 is selected, the rotating speed of the motor is equal to the rotating speed of the main pulley 22 and is equal to the rotating speed of 1/3 of the secondary pulley 24, namely the rotating speed of the main pulley 22 is 750r/min, the rotating speed of the secondary pulley 24 is 2250r/min, and the required driving rotating speed is reduced to 230r/min through the reduction box 14.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a frequency conversion formula belt pulley joint drive mechanism which characterized in that: comprises a constant-speed belt pulley structure;
the input side of the constant-speed pulley structure is connected with a power frequency motor, and the output side of the constant-speed pulley structure is connected with a reduction box; and
and the frequency conversion device is used for carrying out frequency conversion and speed regulation on the power frequency motor.
2. The variable frequency pulley compound transmission of claim 1, wherein: the constant-speed belt pulley structure comprises a housing, and a main belt pulley, a V-belt and a secondary belt pulley which are arranged in the housing;
the main belt pulley is in transmission connection with the auxiliary belt pulley through the V-belt.
3. The variable frequency pulley compound transmission of claim 2, wherein: the main belt pulley is connected with the output end of the power frequency motor, and the auxiliary belt pulley is connected with the input end of the reduction gearbox.
4. The variable frequency pulley compound transmission of claim 3, wherein: the main belt pulley and the driven belt pulley are made of cast iron.
5. The variable frequency pulley compound transmission of claim 1, wherein: and the power frequency motor is provided with an independent fan.
6. The variable frequency pulley compound transmission of claim 1, wherein: the frequency conversion device comprises a frequency converter control cabinet and a frequency converter arranged in the frequency converter control cabinet;
and the frequency converter is used for carrying out frequency conversion speed regulation on the power frequency motor.
7. A sludge screw pump is characterized in that: the variable-frequency belt pulley combined transmission mechanism comprises a screw pump body and the variable-frequency belt pulley combined transmission mechanism as claimed in any one of claims 1 to 6, wherein the variable-frequency belt pulley combined transmission mechanism is connected with the screw pump body;
the input end of the screw pump body is connected with the output end of the reduction gearbox.
8. The sludge screw pump of claim 7, wherein: the frequency conversion device is arranged on a concrete foundation beside the screw pump body.
9. The sludge screw pump of claim 7, wherein: the screw pump body is provided with a liquid inlet and a liquid outlet.
10. The sludge screw pump of claim 9, wherein: the liquid inlet is arranged at the top of the screw pump body, and the liquid outlet is arranged at the end part of the screw pump body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120335076.5U CN214699025U (en) | 2021-02-05 | 2021-02-05 | Variable-frequency belt pulley combined transmission mechanism and sludge screw pump thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120335076.5U CN214699025U (en) | 2021-02-05 | 2021-02-05 | Variable-frequency belt pulley combined transmission mechanism and sludge screw pump thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214699025U true CN214699025U (en) | 2021-11-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120335076.5U Active CN214699025U (en) | 2021-02-05 | 2021-02-05 | Variable-frequency belt pulley combined transmission mechanism and sludge screw pump thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214699025U (en) |
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2021
- 2021-02-05 CN CN202120335076.5U patent/CN214699025U/en active Active
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