CN201982397U - Numerical control direction and flow valve - Google Patents
Numerical control direction and flow valve Download PDFInfo
- Publication number
- CN201982397U CN201982397U CN2011201260281U CN201120126028U CN201982397U CN 201982397 U CN201982397 U CN 201982397U CN 2011201260281 U CN2011201260281 U CN 2011201260281U CN 201120126028 U CN201120126028 U CN 201120126028U CN 201982397 U CN201982397 U CN 201982397U
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- sealing cylinder
- fluid
- spool
- numerical control
- sealing
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Abstract
The utility model discloses a numerical control direction and flow valve, which comprises a valve body, and is characterized in that: a stepper motor is arranged on the valve body, and a transmission mechanism is arranged on the stepper motor; an intracavity is arranged in the valve body, and a spool is arranged in the intracavity; one end of the spool is connected with the transmission mechanism, and a third sealing cylinder and a second sealing cylinder are arranged on the spool at intervals; a first fluid output channel and a fluid input channel are arranged on the valve body and are respectively communicated with the intracavity, and the second sealing cylinder is positioned at the fluid input channel for sealing. The numerical control direction and flow valve can replace the traditional electro-hydraulic servo valve and electro-hydraulic proportional valve which have complex configuration and expensive price and require high-tech professional maintenance staff to maintain, the traditional hydraulic system can be greatly simplified, and the complete control process of the hydraulic system is achieved. By the numerical control direction and flow valve, multiple hydraulic cylinders can be synchronously operated in the hydraulic system, the servo operation of the hydraulic system can be achieved, and the digital control of the hydraulic system can be achieved.
Description
Technical field
The utility model relates to a kind of numerical control directional flow valve.
Background technique
Realize numerical control regulated fluid direction and flow in the existing hydraulic system, need to use existing electrohydraulic control and electro-hydraulic proportional valve, but there is the defective that configuration is complicated, cost an arm and a leg and need high technology specialized maintenance personnel to safeguard in above-mentioned valve, significantly increased the cost of whole hydraulic system, and its using effect is unsatisfactory in actual applications.
The model utility content
The purpose of this utility model provides a kind of numerical control directional flow valve, it can replace electrohydraulic control and the electro-hydraulic proportional valve that existing configuration is complicated, cost an arm and a leg and need high technology specialized maintenance personnel to safeguard, can significantly simplify existing hydraulic system, realize the complete manipulation process of hydraulic system.It also can realize the synchronous operation of all multi-hydraulic-cylinders of hydraulic system, realizes the servo operation of hydraulic system, realizes the Digital Control of hydraulic system, thereby, can solve the problem that prior art exists.
The utility model is achieved through the following technical solutions for achieving the above object: numerical control directional flow valve, comprise valve body, and it is characterized in that: stepper motor is installed on the valve body, driving mechanism is installed on the stepper motor; Offer inner chamber in the valve body, spool is installed in the inner chamber, an end of spool is connected with driving mechanism; Spool is provided with the 3rd sealing cylinder and second sealing cylinder, the 3rd sealing cylinder and second sealing cylinder are spaced a distance, offer first fluid output channel and fluid input channel on the valve body, first fluid output channel and fluid input channel communicate with inner chamber respectively, and second sealing cylinder is positioned at the sealing of fluid input channel place.
In order further to realize the purpose of this utility model, can also be by the following technical solutions: the side that second sealing cylinder is corresponding with the 3rd sealing cylinder be provided with the first throttle curved surface.Offer the second fluid output channel, first fluid return flow line and the second fluid reflux passage on the valve body, the first fluid return flow line and the second fluid reflux passage are positioned at the both sides of fluid input channel, the first fluid output channel is between first fluid return flow line and fluid input channel, and the second fluid output channel is between the fluid input channel and the second fluid reflux passage; Spool is provided with first sealing cylinder, and second sealing cylinder between first sealing cylinder and second sealing cylinder, and all is spaced a distance between the 3rd sealing cylinder and second sealing cylinder between first sealing cylinder and the 3rd sealing cylinder; The 3rd sealing cylinder is positioned at the sealing of place, first fluid return flow line, and first sealing cylinder is positioned at the sealing of the second fluid reflux passage place.The side that second sealing cylinder is corresponding with the 3rd sealing cylinder is provided with the first throttle curved surface, and the side that second sealing cylinder is corresponding with first sealing cylinder is provided with the second throttling curved surface.Described driving mechanism is a screw-nut body, and its leading screw is connected with the output shaft of stepper motor, and the nut of its moving linearly is connected with spool.Described driving mechanism is a connecting rod, and its crank is connected with the output shaft of stepper motor, and its connecting rod is connected with spool.
Advantage of the present utility model is: its compactness simple for structure, cause cheaply, alternative existing electrohydraulic control and electro-hydraulic proportional valve are simplified hydraulic system, improve control accuracy.It also has rational in infrastructure, is easy to be connected with numerical control system, and long service life can be with the numerically controlled advantage of numerical control flux, directional control valve realization hydraulic system.
Description of drawings
Fig. 1 is the structural representation of numerical control directional flow valve described in the utility model; Fig. 2 is the structural representation that the spool of numerical control directional flow valve described in the utility model is moved to the left, and the fluid input channel communicates with the second fluid output channel among the figure; Fig. 3 is the structural representation after the spool of numerical control directional flow valve described in the utility model further moves to left, fluid input channel complete opening among the figure; Fig. 4 is the structural representation that the spool of numerical control directional flow valve described in the utility model moves right, and the fluid input channel communicates with the first fluid output channel among the figure; Fig. 5 is the structural representation after the spool of numerical control directional flow valve described in the utility model further moves to right, fluid input channel complete opening among the figure; Fig. 6 is the structural representation of spool; Fig. 7 is the structural representation of another organization plan of spool; Fig. 8 is the structural representation of described numerical control directional flow valve another program; Fig. 9 is the structural representation that the spool of Flow valve shown in Figure 8 moves right, fluid input channel and first fluid output channel among the figure; Figure 10 is the structural representation that the spool of Flow valve shown in Figure 9 further moves right, fluid input channel complete opening among the figure.
Reference character: 1 valve body, 2 spools, 3 driving mechanisms, 4 stepper motors, 5 first fluid output channels, 6 second fluid output channels, 7 first fluid return flow lines, 8 fluid input channels, 9 second fluid reflux path 10s, the second throttling curved surface, 11 first sealing cylinders, 12 second sealing cylinders, 13 first throttle curved surfaces 14 the 3rd sealing cylinder, 15 inner chambers.
Embodiment
Numerical control directional flow valve described in the utility model as shown in Figure 8, comprises valve body 1, and stepper motor 4 is installed on the valve body 1, and driving mechanism 3 is installed on the stepper motor 4; Offer inner chamber 15 in the valve body 1, spool 2 is installed in the inner chamber 15, spool 2 can be along inner chamber 15 linear reciprocating motions.One end of spool 2 is connected with driving mechanism 3, and stepper motor 4 provides along inner chamber 15 straight-line power for spool 2 by driving mechanism 3.Spool 2 is provided with the 3rd sealing cylinder 14 and second sealing cylinder, 12, the three sealing cylinders 14 and second sealing cylinder 12 and is spaced a distance.Offer first fluid output channel 5 and fluid input channel 8 on the valve body 1, first fluid output channel 5 and fluid input channel 8 communicate with inner chamber 15 respectively, and second sealing cylinder 12 is positioned at the sealing of fluid input channel 8 places.A described segment distance should guarantee that after second sealing cylinder 12 moved complete opening fluid input channel 8, the 3rd sealing cylinder 14 still can not blocked first fluid output channel 5.
During installation, fluid input channel 8 is connected with oil inlet pipe or suction tude, first fluid output channel 5 is connected with fuel supply line or air supply pipe; Stepper motor 4 is connected with numerical control device, and described numerical control device can be existing numerical control devices such as programmable controller, single-chip microcomputer or microcomputer.When described Flow valve is opened, as shown in Figure 9, stepper motor 4 is received the numerical control instruction and is done rotation motion, stepper motor 4 drives spool 2 by driving mechanism 3 and moves right, spool 2 drives second sealing cylinder 12 and removes fluid input channel 8 gradually, hydraulic oil or gas can enter inner chamber 15 by fluid input channel 8, discharge through first fluid output channel 5 again.Along with second sealing cylinder 12 constantly moves to right, the flow of Flow valve constantly enlarges till maximum.When second sealing cylinder 12 moved to left gradually, second sealing cylinder 12 stopped up fluid input channel 8 gradually, and flow is reduced gradually, till described Flow valve cuts out.Spool 2 is implemented throttling and is connected correspondingly liquid chunnel hydraulic system by numerical control instruction given throttling parameter and driving direction under the drive of stepper motor 4 and driving mechanism 3, to realize the operation requirement of liquid flow control system throttling and direction control.Otherwise, then realize the operation requirement of reverse throttling of liquid flow control system and direction control.Thereby can replace existing configuration complicated, cost an arm and a leg and high technology specialized maintenance personnel's electrohydraulic control and electro-hydraulic proportional valve, significantly simplify existing complicated hydraulic system, realize the complete manipulation process of hydraulic system; Realize the synchronous operation of all multi-hydraulic-cylinders of hydraulic system; Realize the servo operation of hydraulic system; Realize the Digital Control of hydraulic system.
Regulate the precision of flow for improving described Flow valve, make changes in flow rate be linear gradientization, as shown in Figure 7, the side that second sealing cylinder 12 is corresponding with the 3rd sealing cylinder 14 is provided with first throttle curved surface 13.
Extremely shown in Figure 5 as Fig. 1, offer the second fluid output channel 6, first fluid return flow line 7 and the second fluid reflux passage 9 on the valve body 1, the second fluid output channel 6, first fluid return flow line 7 and the second fluid reflux passage 9 communicate with inner chamber 15 respectively, the first fluid return flow line 7 and the second fluid reflux passage 9 are positioned at the both sides of fluid input channel 8, first fluid output channel 5 is between first fluid return flow line 7 and fluid input channel 8, and the second fluid output channel 6 is between the fluid input channel 8 and the second fluid reflux passage 9; Spool 2 is provided with first sealing cylinder 11, second sealing cylinder 12 is between first sealing cylinder 11 and the 3rd sealing cylinder 14, between first sealing cylinder 11 and second sealing cylinder 12, and all be spaced a distance between the 3rd sealing cylinder 14 and second sealing cylinder 12; The 3rd sealing cylinder 14 is positioned at the sealing of 7 places, first fluid return flow line, and first sealing cylinder 11 is positioned at the sealing of the second fluid reflux passage, 9 places.
As shown in Figures 2 and 3, when stepper motor 4 is moved to the left gradually by driving mechanism 3 drive spools 2, hydraulic oil or gas can enter inner chamber 15 by fluid input channel 8, enter a side of oil cylinder or cylinder again through the second fluid output channel 6, the opposite side hydraulic oil of oil cylinder or cylinder or gas return inner chamber 15 through first fluid output channel 5 liquid, flow back to fuel tank through first fluid return flow line 7 again.Flow in the said process in the second fluid output channel 6 increases gradually, and first sealing cylinder 11 seals the second fluid reflux passage 9 all the time.
As shown in Figure 4 and Figure 5, when stepper motor 4 moves right gradually by driving mechanism 3 drive spools 2, hydraulic oil or gas can enter inner chamber 15 by fluid input channel 8, enter a side of oil cylinder or cylinder again through first fluid output channel 5, the opposite side hydraulic oil of oil cylinder or cylinder or gas return inner chamber 15 through the second fluid output channel, 6 liquid, flow back to fuel tank through the second fluid reflux passage 9 again.Flow in the said process in the first fluid output channel 5 increases gradually, and first sealing cylinder 11 seals first fluid return flow line 7 all the time.
Regulate the precision of flow for improving described Flow valve, make changes in flow rate be linear gradientization, as shown in Figure 6, the side that second sealing cylinder 12 is corresponding with the 3rd sealing cylinder 14 is provided with first throttle curved surface 13, the second sealing cylinders 12 side corresponding with first sealing cylinder 11 and is provided with the second throttling curved surface 10.
In actual manufacturing process, described driving mechanism 3 can be a screw-nut body, and its leading screw is connected with the output shaft of stepper motor 4, and the nut of its moving linearly is connected with spool 2.Described driving mechanism 3 also can be a connecting rod, and its crank is connected with the output shaft of stepper motor 4, and its connecting rod is connected with spool 2.Described driving mechanism 3 can also be that existing will rotatablely moving is converted into straight-line mechanism.
The utility model not part of detailed description is known technology.
Claims (6)
1. numerical control directional flow valve comprises valve body (1), it is characterized in that: valve body (1) is gone up stepper motor (4) is installed, and stepper motor (4) is gone up driving mechanism (3) is installed; Offer inner chamber (15) in the valve body (1), spool (2) is installed in the inner chamber (15), an end of spool (2) is connected with driving mechanism (3); Spool (2) is provided with the 3rd sealing cylinder (14) and second sealing cylinder (12), the 3rd sealing cylinder (14) is spaced a distance with second sealing cylinder (12), offer first fluid output channel (5) and fluid input channel (8) on the valve body (1), first fluid output channel (5) and fluid input channel (8) communicate with inner chamber (15) respectively, and second sealing cylinder (12) is positioned at fluid input channel (8) and locates sealing.
2. numerical control directional flow valve according to claim 1 is characterized in that: the side that second sealing cylinder (12) is corresponding with the 3rd sealing cylinder (14) is provided with first throttle curved surface (13).
3. numerical control directional flow valve according to claim 1, it is characterized in that: offer the second fluid output channel (6), first fluid return flow line (7) and the second fluid reflux passage (9) on the valve body (1), the first fluid return flow line (7) and the second fluid reflux passage (9) are positioned at the both sides of fluid input channel (8), first fluid output channel (5) is positioned between first fluid return flow line (7) and the fluid input channel (8), and the second fluid output channel (6) is positioned between the fluid input channel (8) and the second fluid reflux passage (9); Spool (2) is provided with first sealing cylinder (11), second sealing cylinder (12) is positioned between first sealing cylinder (11) and the 3rd sealing cylinder (14), between first sealing cylinder (11) and second sealing cylinder (12), and all be spaced a distance between the 3rd sealing cylinder (14) and second sealing cylinder (12); The 3rd sealing cylinder (14) is positioned at first fluid return flow line (7) and locates sealing, and first sealing cylinder (11) is positioned at the second fluid reflux passage (9) and locates sealing.
4. numerical control directional flow valve according to claim 3, it is characterized in that: the side that second sealing cylinder (12) is corresponding with the 3rd sealing cylinder (14) is provided with first throttle curved surface (13), and the side that second sealing cylinder (12) is corresponding with first sealing cylinder (11) is provided with the second throttling curved surface (10).
5. numerical control directional flow valve according to claim 1 is characterized in that: described driving mechanism (3) is a screw-nut body, and its leading screw is connected with the output shaft of stepper motor (4), and the nut of its moving linearly is connected with spool (2).
6. numerical control directional flow valve according to claim 1 is characterized in that: described driving mechanism (3) is a connecting rod, and its crank is connected with the output shaft of stepper motor (4), and its connecting rod is connected with spool (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201260281U CN201982397U (en) | 2011-04-26 | 2011-04-26 | Numerical control direction and flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201260281U CN201982397U (en) | 2011-04-26 | 2011-04-26 | Numerical control direction and flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982397U true CN201982397U (en) | 2011-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201260281U Expired - Fee Related CN201982397U (en) | 2011-04-26 | 2011-04-26 | Numerical control direction and flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982397U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216476A (en) * | 2012-01-20 | 2013-07-24 | 杨世祥 | Motor driven servo valve |
| CN110803665A (en) * | 2019-11-13 | 2020-02-18 | 苏州富瑞特铝合金升降机械有限公司 | Emergency descending control system of elevator |
-
2011
- 2011-04-26 CN CN2011201260281U patent/CN201982397U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216476A (en) * | 2012-01-20 | 2013-07-24 | 杨世祥 | Motor driven servo valve |
| CN110803665A (en) * | 2019-11-13 | 2020-02-18 | 苏州富瑞特铝合金升降机械有限公司 | Emergency descending control system of elevator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20140426 |