CN205047432U - Guiding valve telecontrol equipment and helical -lobe compressor - Google Patents
Guiding valve telecontrol equipment and helical -lobe compressor Download PDFInfo
- Publication number
- CN205047432U CN205047432U CN201520686502.4U CN201520686502U CN205047432U CN 205047432 U CN205047432 U CN 205047432U CN 201520686502 U CN201520686502 U CN 201520686502U CN 205047432 U CN205047432 U CN 205047432U
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- China
- Prior art keywords
- screw rod
- nut plate
- movement device
- guiding valve
- sliding valve
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Abstract
The utility model discloses a guiding valve telecontrol equipment and helical -lobe compressor. This guiding valve telecontrol equipment includes nut dish (1), screw rod (2) and driving motor (3), and the first end of screw rod (2) is worn to establish on nut dish (1) to with nut dish (1) screw -thread fit, driving motor (3) drive is connected to the second end of screw rod (2), and rotate for nut dish (1) drive screw (2). According to the utility model discloses a hysteresis and time delay problem that the guiding valve removed can be overcome to the guiding valve telecontrol equipment, guarantee the validity and the accuracy of helical -lobe compressor regulation.
Description
Technical field
The utility model relates to Compressor Technology field, in particular to a kind of sliding valve movement device and helical-lobe compressor.
Background technique
Slide-valve gear is the important capacity controlling gear of helical-lobe compressor.Existing helical-lobe compressor adopts the mode being promoted the movement of piston moving belt movable pulley by oil pressure difference, changes the length of helical-lobe compressor compression, thus regulates compressor displacement, regulates the load of compressor.This adjustment is undertaken by oil pressure difference, therefore there is the delayed of guiding valve movement and time delay, with the problem such as workload demand does not mate, causes adverse effect to the capacity adjustment validity of helical-lobe compressor and accuracy.
Model utility content
A kind of sliding valve movement device and helical-lobe compressor are provided in the utility model embodiment, the delayed of guiding valve movement and latency issue can be overcome, ensure the validity that helical-lobe compressor regulates and accuracy.
For achieving the above object, the utility model provides a kind of sliding valve movement device and comprises nut plate, screw rod and drive motor, and the first end of screw rod is located on nut plate, and with nut plate screw-thread fit, drive motor drives the second end being connected to screw rod, and drive screw rotates relative to nut plate.
As preferably, drive motor is stepper motor.
As preferably, between drive motor with screw rod, key is connected.
As preferably, sliding valve movement device also comprises the guiding valve connecting rod be connected with nut plate, and guiding valve connecting rod has the axially extended cavity along screw rod, and the first end of screw rod moves in cavity.
As preferably, guiding valve connecting rod is embedded in the side of nut plate away from drive motor.
As preferably, the periphery of guiding valve connecting rod is provided with stop lug, is provided with the first spring between stop lug and nut plate.
As preferably, stop lug is provided with the second spring away from the side of nut plate, and the second spring housing is located at the periphery of guiding valve connecting rod.
As preferably, screw rod is provided with the catching step of backstop outside nut plate.
According to embodiment of the present utility model, helical-lobe compressor comprises sliding valve movement device, and this sliding valve movement device is above-mentioned sliding valve movement device.
Application the technical solution of the utility model, sliding valve movement device comprises nut plate, screw rod and drive motor, and the first end of screw rod is located on nut plate, and with nut plate screw-thread fit, drive motor drives the second end being connected to screw rod, and drive screw rotates relative to nut plate.This sliding valve movement device is moved by drive motor drive screw, can avoid screw motion drive sliding valve movement occur after and the problem of time delay, ensure validity and the accuracy of helical-lobe compressor energy adjustment.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the sliding valve movement device of the utility model embodiment.
Description of reference numerals: 1, nut plate; 2, screw rod; 3, drive motor; 4, guiding valve connecting rod; 5, stop lug; 6, the first spring; 7, the second spring; 8, catching step.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as to restriction of the present utility model.
Shown in Figure 1, according to embodiment of the present utility model, sliding valve movement device comprises nut plate 1, screw rod 2 and drive motor 3, the first end of screw rod 2 is located on nut plate 1, and with nut plate 1 screw-thread fit, drive motor 3 drives the second end being connected to screw rod 2, and drive screw 2 rotates relative to nut plate 1.
This sliding valve movement device is moved by drive motor 3 drive screw 2, and pass through the axial motion of rotating drive nut plate 1 along screw rod 2 of screw rod 2, and then band movable pulley is along the axial motion of screw rod 2, the problem of the delayed and time delay that screw motion can be avoided to drive sliding valve movement to occur, ensures validity and the accuracy of helical-lobe compressor energy adjustment.
Preferably, drive motor 3 is stepper motor.Stepper motor, according to control electrical signal, drives screw rod 2 to rotate, and drives nut plate 1 moving axially along screw rod 2, thus drive the movement of guiding valve by the rotation of screw rod 2, the energy adjustment of experiment helical-lobe compressor.By the controllability of stepper motor, be the linear motion distance of nut plate 1 by screw rod 2 and the screw-thread fit transformation of nut plate 1 by stepper motor rotation angle, thus complete guiding valve advance and the control retreated, reach the effect of adjusting screw rod compressor air-discharging amount or compression ratio.
Because the angle of swing of screw rod 2 and the displacement distance of nut plate 1 have a fixing coefficient, therefore can well be controlled the speed of the movement of nut plate 1 by the change of the flight pitch between screw rod 2 and nut plate 1, and then realize the control to guiding valve travelling speed.
When being controlled by the motion of stepper motor to guiding valve, the initial position of guiding valve can be reserved, by the rotation step number of accumulative stepper motor, calculate the distance of guiding valve distance initial position, thus determine the position of guiding valve, and then determine the percentage of helical-lobe compressor energy.
Between drive motor 3 with screw rod 2, key is connected, and effectively the rotational energy of drive motor can be passed to screw rod 2.
Sliding valve movement device also comprises the guiding valve connecting rod 4 be connected with nut plate 1, and guiding valve connecting rod 4 has the axially extended cavity along screw rod 2, and the first end of screw rod 2 moves in cavity.The cavity of guiding valve connecting rod 4 can dodge space for the rotation of screw rod 2 provides, and makes in nut plate 1 movement process, guiding valve connecting rod 4 can not and the first end of screw rod 2 between interfere, can control the motion of guiding valve better.
Guiding valve connecting rod 4 is embedded in the side of nut plate 1 away from drive motor 3.Guiding valve connecting rod 4 is embedded on nut plate 1, the linkage structure between guiding valve connecting rod 4 and nut plate 1 can be simplified, and the mounting or dismounting realized between guiding valve connecting rod 4 and nut plate 1 can be convenient to safeguard, the replacement cost of parts can be reduced, reduce the difficulty changed and safeguard.
The periphery of guiding valve connecting rod 4 is provided with stop lug 5, is provided with the first spring 6 between stop lug 5 and nut plate 1.This first spring 6 can ensure that connection between guiding valve connecting rod 4 and nut plate 1 is more tight, and can cushion being connected to form between guiding valve connecting rod 4 and nut plate 1 and prevent nut plate 1 pair of guiding valve connecting rod 4 in the process of moving from forming greater impact.
Stop lug 5 is provided with away from the side of nut plate 1 periphery that second spring 7, second spring 7 is set in guiding valve connecting rod 4.
Screw rod 2 is provided with the catching step 8 of backstop outside nut plate 1.This catching step 8 can carry out spacing to the axial movement position of nut plate on screw rod 2, prevents nut plate 1 hyperkinesia.
According to embodiment of the present utility model, helical-lobe compressor comprises sliding valve movement device, and this sliding valve movement device is above-mentioned sliding valve movement device.
Certainly, be more than preferred implementation of the present utility model.It should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model basic principle, can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.
Claims (9)
1. a sliding valve movement device, it is characterized in that, comprise nut plate (1), screw rod (2) and drive motor (3), the first end of described screw rod (2) is located on described nut plate (1), and with described nut plate (1) screw-thread fit, described drive motor (3) drives the second end being connected to described screw rod (2), and drives described screw rod (2) to rotate relative to described nut plate (1).
2. sliding valve movement device according to claim 1, is characterized in that, described drive motor (3) is stepper motor.
3. sliding valve movement device according to claim 1, is characterized in that, between described drive motor (3) with described screw rod (2), key is connected.
4. sliding valve movement device according to claim 1, it is characterized in that, described sliding valve movement device also comprises the guiding valve connecting rod (4) be connected with described nut plate (1), described guiding valve connecting rod (4) has the axially extended cavity along described screw rod (2), and the first end of described screw rod (2) moves in described cavity.
5. sliding valve movement device according to claim 4, is characterized in that, described guiding valve connecting rod (4) is embedded in the side of described nut plate (1) away from described drive motor (3).
6. sliding valve movement device according to claim 4, it is characterized in that, the periphery of described guiding valve connecting rod (4) is provided with stop lug (5), is provided with the first spring (6) between described stop lug (5) and described nut plate (1).
7. sliding valve movement device according to claim 6, it is characterized in that, described stop lug (5) is provided with the second spring (7) away from the side of described nut plate (1), and described second spring (7) is set in the periphery of described guiding valve connecting rod (4).
8. sliding valve movement device according to claim 1, is characterized in that, described screw rod (2) is provided with backstop at described nut plate (1) catching step outward (8).
9. a helical-lobe compressor, comprises sliding valve movement device, it is characterized in that, the sliding valve movement device of described sliding valve movement device according to any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686502.4U CN205047432U (en) | 2015-09-07 | 2015-09-07 | Guiding valve telecontrol equipment and helical -lobe compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686502.4U CN205047432U (en) | 2015-09-07 | 2015-09-07 | Guiding valve telecontrol equipment and helical -lobe compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205047432U true CN205047432U (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520686502.4U Expired - Fee Related CN205047432U (en) | 2015-09-07 | 2015-09-07 | Guiding valve telecontrol equipment and helical -lobe compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205047432U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762633A (en) * | 2017-01-10 | 2017-05-31 | 麦克维尔空调制冷(苏州)有限公司 | A kind of multiscrew formula determines frequency refrigeration compressor |
-
2015
- 2015-09-07 CN CN201520686502.4U patent/CN205047432U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762633A (en) * | 2017-01-10 | 2017-05-31 | 麦克维尔空调制冷(苏州)有限公司 | A kind of multiscrew formula determines frequency refrigeration compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20210907 |