CN217950643U - Water pump multistage control system and operation machinery - Google Patents
Water pump multistage control system and operation machinery Download PDFInfo
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- CN217950643U CN217950643U CN202221901190.0U CN202221901190U CN217950643U CN 217950643 U CN217950643 U CN 217950643U CN 202221901190 U CN202221901190 U CN 202221901190U CN 217950643 U CN217950643 U CN 217950643U
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Abstract
The utility model relates to a hydraulic system technical field provides a water pump multilevel control system and operation machinery. The multistage control system of water pump includes: the oil pump comprises an oil source, a control valve, a plurality of oil delivery branch pipes, a plurality of pressure regulating valves and a water pump. One end of each oil delivery branch pipe is respectively connected with an oil source through a control valve, and the other end of each oil delivery branch pipe is connected with an oil inlet of the water pump. The control valve is used for controlling the communication state of each oil transportation branch pipe and the oil source. Each oil transportation branch pipe is respectively provided with a pressure regulating valve. The control valve controls the oil source to be communicated with one oil delivery branch pipe, and the pressure regulating valves arranged on the oil delivery branch pipes can respectively control the output pressure of the oil delivery branch pipes corresponding to the pressure regulating valves. And then, drive the water pump and carry water supply with different pressure to be suitable for the demand of different operating modes. Therefore, the water pump multistage control system can control the water pump to deliver water at the target pressure. On one hand, the waste of energy can be reduced; on the other hand, the threat that the operating personnel is hurt by high-pressure injection can be avoided.
Description
Technical Field
The utility model relates to a hydraulic system technical field especially relates to a water pump multi-stage control system and operation machinery.
Background
The tunneling and anchoring machine has both a tunneling function and an anchoring and protecting function. When the tunneling machine performs tunneling operation, a large amount of high-pressure water is needed for cooling and spraying dust reduction. When the anchor driving machine carries out anchoring and protecting operation, low-pressure and small-quantity water is needed for cooling and drilling for dedusting. A water system arranged in the digging and anchoring machine is internally provided with a booster water pump, and the existing booster water pump generally keeps high pressure and constant pressure to output dedusting cooling water so as to meet the requirements of temperature reduction and dedusting under two working conditions. When the anchor driving machine carries out anchoring and protecting operation, the water system for maintaining high-pressure constant-pressure output has energy waste, and high-pressure water supply threatens the safety of workers operating the drilling machine at a short distance.
SUMMERY OF THE UTILITY MODEL
The utility model provides a water pump multilevel control system for it is extravagant to solve the energy that the water pump keeps high pressure constant voltage output to lead to in current water system, and high pressure water source can lead to the fact the problem of threat to staff's safety.
According to the utility model discloses a first aspect provides a water pump multilevel control system, include: the oil pump comprises an oil source, a control valve, a plurality of oil transportation branch pipes, a plurality of pressure regulating valves and a water pump.
One end of each oil conveying branch pipe is connected with the oil source through the control valve, and the other end of each oil conveying branch pipe is connected with an oil inlet of the water pump. The control valve is used for controlling the communication state of each oil transportation branch pipe and the oil source. And the pressure regulating valves are respectively arranged on the oil transportation branch pipes.
According to the utility model provides a pair of water pump multilevel control system, many oil transportation branch pipes include first oil transportation branch pipe and second oil transportation branch pipe. The plurality of pressure regulating valves includes a first pressure regulating valve and a second pressure regulating valve.
One end of the first oil delivery branch pipe is connected with the oil source through the control valve, and the other end of the first oil delivery branch pipe is connected with an oil inlet of the water pump. The first pressure regulating valve is installed on the first oil delivery branch pipe.
One end of the second oil delivery branch pipe is connected with the oil source through the control valve, and the other end of the second oil delivery branch pipe is connected with an oil inlet of the water pump. And the second pressure regulating valve is arranged on the second oil delivery branch pipe.
The control valve is used for controlling the communication state of the first oil transportation branch pipe and the second oil transportation branch pipe with the oil source.
According to the utility model provides a pair of water pump multi-stage control system, the oil source includes oil pump and oil tank.
The inlet of the oil pump is connected with the oil tank, and the outlet of the oil pump is connected with the control valve.
According to the utility model provides a pair of water pump multi-stage control system, the control valve includes first intercommunication position and second intercommunication position.
And in the state of the first communication position, the first oil delivery branch pipe is communicated with the oil pump through the control valve, and the second oil delivery branch pipe is communicated with the oil tank through the control valve.
And in the state of the second communication position, the second oil delivery branch pipe is communicated with the oil pump through the control valve, and the first oil delivery branch pipe is communicated with the oil tank through the control valve.
According to the utility model provides a pair of water pump multi-stage control system, the control valve still includes the stop position.
And in the state of the stopping position, the first oil delivery branch pipe, the oil pump and the oil tank are all stopped. The second oil delivery branch pipe, the oil pump and the oil tank are all cut off.
According to the utility model provides a pair of water pump multistage control system, the control valve includes tribit four-way reversing valve. The three-position four-way reversing valve comprises a first control oil port and a second control oil port. The first control oil port and the second control oil port are used for controlling the three-position four-way reversing valve to switch among the first communicating position, the second communicating position and the stopping position.
According to the utility model provides a pair of water pump multistage control system, water pump stage water pump multistage control system still includes the oil transportation house steward. One end of the oil conveying main pipe is connected with the first oil conveying branch pipe and the second oil conveying branch pipe, and the other end of the oil conveying main pipe is connected with an oil inlet of the water pump.
And a locking valve is arranged between the first oil transportation branch pipe and the second oil transportation branch pipe. The locking valve is used for stopping the first oil transportation branch pipe and the second oil transportation branch pipe.
According to the utility model provides a pair of water pump multistage control system, the lock stop valve includes first check valve and second check valve. The first check valve is mounted to the first branch oil delivery pipe. The second check valve is mounted to the second branch oil delivery pipe.
According to the utility model provides a pair of water pump multistage control system, the lock stop valve includes the shuttle valve. The shuttle valve comprises a first oil inlet, a second oil inlet and an oil outlet. The first oil inlet is connected with the first oil delivery branch pipe. And the second oil inlet is connected with the second oil delivery branch pipe. The oil outlet is connected with the oil transportation main pipe.
According to a second aspect of the present invention, there is provided a working machine comprising the multistage control system for a water pump as described above.
The utility model provides an among the water pump multilevel control system, each the one end of oil transportation branch pipe is all passed through the control valve respectively with the oil source is connected, each the other end of oil transportation branch pipe all with the oil inlet of water pump is connected. The control valve is used for controlling the communication state of each oil transportation branch pipe and the oil source. And the pressure regulating valves are respectively arranged on the oil conveying branch pipes.
Through the structure, the control valve controls the oil source to be communicated with a certain oil delivery branch pipe, and the pressure regulating valves arranged on the oil delivery branch pipes can respectively control the output pressure of the oil delivery branch pipes corresponding to the pressure regulating valves. And then, drive the water pump and carry water supply with different pressure to be suitable for the user demand of different operating modes. Therefore, the water pump multistage control system can control the water pump to deliver water at the target pressure. On one hand, the waste of energy can be reduced; on the other hand, the threat that the operating personnel is hurt by high-pressure injection can be avoided.
Further, since the working machine includes the water pump multistage control system as described above, it also has the advantages as described above.
Drawings
In order to 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 introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram i of a multi-stage control system of a water pump provided by the present invention;
fig. 2 is a schematic structural diagram ii of the multi-stage control system of the water pump provided by the present invention;
reference numerals are as follows:
101. an oil pump; 102. an oil tank; 200. a control valve; 201. a first communication bit; 202. a second communication position; 203. a stopping position; 204. a first control oil port; 205. a second control oil port; 301. a first oil delivery branch pipe; 302. a second oil delivery branch pipe; 303. a main oil transportation pipe; 400. a water pump; 500. a latch valve; 501. a one-way valve; 502. a shuttle valve; 601. a first pressure regulating valve; 602. a second pressure regulating valve.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are provided to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description of the embodiments and for simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, without mutual contradiction, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification to make the objects, technical solutions, and advantages of the embodiments of the present invention clearer, and the technical solutions in the embodiments of the present invention will be described clearly and completely 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The following describes a multistage control system for a water pump and a working machine according to an embodiment of the present invention with reference to fig. 1 and 2. It should be understood that the following description is only exemplary of the present invention, and is not intended to limit the present invention in any way.
The embodiment of the first aspect of the utility model provides a water pump multilevel control system, as shown in fig. 1 and fig. 2, this water pump multilevel control system includes: an oil source, a control valve 200, a plurality of oil delivery branches, a plurality of pressure regulating valves, and a water pump 400.
Wherein, one end of each oil transportation branch pipe is respectively connected with the oil source through the control valve 200, and the other end of each oil transportation branch pipe is connected with the oil inlet of the water pump 400. The control valve 200 is used to control the communication state of each oil delivery branch pipe with the oil source. Each oil transportation branch pipe is respectively provided with a pressure regulating valve.
For example, the water pump multi-stage control system is used to control the water pump 400 in a bolting mill water system. When the excavator is used for excavating work, the pressure regulating valve on one oil delivery branch pipe is regulated to a relatively large pressure value, for example, the pressure regulating valve is regulated to 80bar. The control valve 200 controls the oil source to communicate with the oil delivery branch pipe and supply oil to the water pump 400, so as to drive the water pump 400 to output cooling dust-reducing water with relatively large pressure.
When the excavator performs an anchoring operation, the pressure regulating valve on a certain oil delivery branch pipe is regulated to a relatively small pressure value, for example, the pressure regulating valve is regulated to 60bar. The control valve 200 controls the oil source to communicate with the oil delivery branch pipe and supply oil to the water pump 400, so as to drive the water pump 400 to output cooling dust-reducing water with relatively low pressure. Therefore, the energy consumption of the water pump 400 can be reduced, and the energy can be saved. Meanwhile, the working personnel operating the drilling machine in a close range can be effectively protected, and the drilling machine is prevented from being damaged by high-pressure injection.
Through the structure, the control valve 200 controls the oil source to be communicated with a certain oil delivery branch pipe, and the pressure regulating valves arranged on the oil delivery branch pipes can respectively control the output pressure of the oil delivery branch pipes corresponding to the pressure regulating valves. Further, the water pump 400 is driven to deliver water at different pressures to meet the use requirements of different working conditions. Thus, the water pump multistage control system can control the water pump 400 to deliver water at a target pressure. On one hand, the waste of energy can be reduced; on the other hand, the threat that the operating personnel is hurt by high-pressure injection can be avoided.
In one embodiment of the present invention, the plurality of oil delivery branches includes a first oil delivery branch 301 and a second oil delivery branch 302. The plurality of pressure regulating valves include a first pressure regulating valve 601 and a second pressure regulating valve 602.
One end of the first oil delivery branch pipe 301 is connected with an oil source through the control valve 200, and the other end of the first oil delivery branch pipe 301 is connected with an oil inlet of the water pump 400. The first pressure regulating valve 601 is installed on the first oil delivery branch pipe 301.
One end of the second oil delivery branch pipe 302 is connected with an oil source through the control valve 200, and the other end of the second oil delivery branch pipe 302 is connected with an oil inlet of the water pump 400. A second pressure regulating valve 602 is mounted on the second branch oil delivery pipe 302.
The control valve 200 is used for controlling the communication state of the first oil delivery branch pipe 301 and the second oil delivery branch pipe 302 with the oil source to supply oil to the water pump 400.
In one embodiment of the present invention, the oil source includes an oil pump 101 and an oil tank 102. An inlet of the oil pump 101 is connected to the oil tank 102, and an outlet of the oil pump 101 is connected to the control valve 200.
For example, as shown in fig. 1 and fig. 2, in this embodiment, the water pump multistage control system is provided with two oil delivery branches, namely a first oil delivery branch 301 and a second oil delivery branch 302. The first oil delivery branch pipe 301 is provided with a first pressure regulating valve 601, and the second oil delivery branch pipe 302 is provided with a second pressure regulating valve 602. The control valve 200 can control one of the first oil delivery branch pipe 301 and the second oil delivery branch pipe 302 to be communicated with the oil pump 101, and the other to be communicated with the oil tank 102.
It should be noted here that the present invention is not limited in any way to the specific type of pressure regulating valve. For example, the pressure regulating valve includes, but is not limited to, a relief valve.
In one embodiment of the present invention, the control valve 200 includes a first communication position 201 and a second communication position 202.
In the state of the first communication position 201, the first branch oil delivery pipe 301 is communicated with the oil pump 101 through the control valve 200, and the second branch oil delivery pipe 302 is communicated with the oil tank 102 through the control valve 200, so that the first branch oil delivery pipe 301 supplies oil to the water pump 400.
In the state of the second communication position 202, the second oil delivery branch pipe 302 is communicated with the oil pump 101 through the control valve 200, and the first oil delivery branch pipe 301 is communicated with the oil tank 102 through the control valve 200, so that the second oil delivery branch pipe 302 supplies oil to the water pump 400.
In one embodiment of the present invention, the control valve 200 further comprises a shut-off position 203.
In the state of the stop position 203, the first branch oil delivery pipe 301 is stopped from the oil pump 101 and the oil tank 102, and the second branch oil delivery pipe 302 is stopped from the oil pump 101 and the oil tank 102.
Further, in yet another embodiment of the present invention, the control valve 200 comprises a three-position, four-way reversing valve. The three-position, four-way reversing valve includes a first control port 204 and a second control port 205. The first control port 204 and the second control port 205 are used for controlling the three-position four-way reversing valve to switch among a first communication position 201, a second communication position 202 and a stop position 203.
Specifically, the water pump 400 includes an oil inlet, an oil return port, a water inlet, and a water outlet. An oil inlet of the water pump 400 is connected with the first oil delivery branch pipe 301 and the second oil delivery branch pipe 302, and an oil return port of the water pump 400 is communicated with the oil tank 102. The water inlet of the water pump 400 is connected with water sources such as a water tank, and the water outlet of the water pump 400 is connected with a drainage pipeline.
As shown in fig. 1 and 2, in this embodiment, the left-hand side branch is a first branch 301, and the right-hand side branch is a second branch 302.
The control valve 200 comprises a three-position, four-way reversing valve. The left position of the three-position four-way reversing valve is a first communication position 201, the middle position is a stop position 203, and the right position is a second communication position 202. The three-position four-way reversing valve comprises a first working oil port, a second working oil port, a third working oil port and a fourth working oil port. The left control oil port of the three-position four-way reversing valve is a first control oil port 204, and the right control oil port of the three-position four-way reversing valve is a second control oil port 205. The first working oil port is connected with the oil pump 101, the second working oil port is connected with the first oil delivery branch pipe 301, the third working oil port is connected with the second oil delivery branch pipe 302, and the fourth working oil port is connected with the oil tank 102.
When the control oil is introduced into the first control oil port 204, the three-position four-way reversing valve is switched to the left position, the first working oil port is communicated with the second working oil port, and the third working oil port is communicated with the fourth working oil port. At this time, the oil pump 101 supplies oil to the water pump 400 through the first branch oil delivery pipe 301, and the second branch oil delivery pipe 302 communicates with the oil tank 102.
When the control oil passes through the second control oil port 205, the three-position four-way reversing valve is switched to the right position, the first working oil port is communicated with the third working oil port, and the second working oil port is communicated with the fourth working oil port. At this time, the oil pump 101 supplies oil to the water pump 400 through the second oil delivery branch pipe 302, and the first oil delivery branch pipe 301 is communicated with the oil tank 102.
When the control oil with the same pressure is simultaneously fed into the first control oil port 204 and the second control oil port 205, the three-position four-way reversing valve is in the middle position. The first working port, the second working port, the third working port and the fourth working port are all cut off from each other, so that the first oil delivery branch pipe 301 and the second oil delivery branch pipe 302 are all cut off from the oil pump 101 and the oil tank 102. At this time, the water pump 400 stops operating.
It should be noted here that the three-position four-way reversing valve is provided with a first limit adjusting structure and a second limit adjusting structure. The first limiting and adjusting structure is used for adjusting the oil port opening degree of the three-position four-way reversing valve when the three-position four-way reversing valve is located at the first communication position 201, namely, the first limiting and adjusting structure is used for adjusting the maximum right displacement of the valve core of the three-position four-way reversing valve. The second limiting and adjusting structure is used for adjusting the oil port opening when the three-position four-way reversing valve is located at the second communication position 202, that is, the second limiting and adjusting structure is used for adjusting the maximum left displacement of the valve core of the three-position four-way reversing valve. Through setting up first spacing regulation structure and second spacing regulation structure, can adjust the through-flow volume when tribit four-way reversing valve is in different work positions respectively. Further, the water pump 400 is driven to output cooling dedusting water with different flow rates so as to meet different working condition requirements.
For example, the flow rate in the first communication position 201 state is larger than the flow rate in the second communication position 202 state by adjusting the first limit adjustment structure and the second limit adjustment structure. Meanwhile, the set pressure value of the first pressure regulating valve 601 is larger than the pressure set value of the second pressure regulating valve 602. The first communication position 201 corresponds to the tunneling working condition of the tunneling and anchoring machine so as to realize high-pressure large-flow water supply output. The second communication position 202 corresponds to the anchoring operation condition of the driving and anchoring machine so as to realize low-pressure and small-flow water supply output.
In an embodiment of the present invention, the multistage control system of the water pump 400 further comprises an oil transportation main 303. One end of the oil transportation main pipe 303 is connected with the first oil transportation branch pipe 301 and the second oil transportation branch pipe 302, and the other end of the oil transportation main pipe 303 is connected with an oil inlet of the water pump 400.
A lock valve 500 is installed between the first oil delivery branch pipe 301 and the second oil delivery branch pipe 302. The latch valve 500 is used for blocking the first oil delivery branch pipe 301 and the second oil delivery branch pipe 302.
For example, in one embodiment of the present invention, the latch valve 500 includes a first one-way valve 501 and a second one-way valve 501. A first check valve 501 is installed to the first branch oil delivery pipe 301. A second check valve 501 is mounted to the second branch oil delivery pipe 302.
Specifically, as shown in fig. 1, one end of the first oil delivery branch pipe 301 is connected to the second working port of the three-position four-way reversing valve, and the other end of the first oil delivery branch pipe 301 is connected to the inlet of the oil delivery main pipe 303. One end of the second oil delivery branch pipe 302 is connected with a third working oil port of the three-position four-way reversing valve, and the other end of the second oil delivery branch pipe 302 is connected with an inlet of the oil delivery main pipe 303. The outlet of the oil delivery main pipe 303 is connected with the oil inlet of the water pump 400.
The inlet of the check valve 501 on the first oil delivery branch pipe 301 is communicated with the first oil delivery branch pipe 301, and the outlet of the check valve 501 on the first oil delivery branch pipe 301 is communicated with the inlet of the oil delivery main pipe 303. The inlet of the check valve 501 on the second oil delivery branch pipe 302 is communicated with the second oil delivery branch pipe 302, and the outlet of the check valve 501 on the second oil delivery branch pipe 302 is communicated with the inlet of the oil delivery main pipe 303.
Therefore, when the three-position four-way reversing valve is switched to the left position, the oil pump 101 is communicated with the oil inlet of the water pump 400 through the first oil delivery branch pipe 301. The check valve 501 on the second branch oil transportation pipe 302 can cut off the oil in the first branch oil transportation pipe 301, so as to prevent the oil in the first branch oil transportation pipe 301 from flowing back into the second branch oil transportation pipe 302. When the three-position four-way reversing valve is switched to the right position, the oil pump 101 is communicated with an oil inlet of the water pump 400 through the second oil delivery branch pipe 302. The check valve 501 on the first branch oil transportation pipe 301 can stop the oil in the second branch oil transportation pipe 302 to prevent the oil in the second branch oil transportation pipe 302 from flowing back into the first branch oil transportation pipe 301. Through the structural arrangement, oil supply interlocking of the oil transportation branch pipes can be realized, so that the pressure supply accuracy of the first oil transportation branch pipe 301 and the second oil transportation branch pipe 302 is improved.
It should be noted that the above embodiment is only an exemplary embodiment of the present invention, and does not constitute any limitation to the present invention. That is, the latch valve 500 includes, but is not limited to, a plurality of check valves 501 arranged in parallel.
For example, as shown in fig. 2, in yet another embodiment of the present invention, the latch valve 500 includes a shuttle valve 502. Shuttle valve 502 includes a first oil inlet, a second oil inlet, and an oil outlet. The first oil inlet is connected with the first oil delivery branch pipe 301. The second oil inlet is connected with the second oil delivery branch pipe 302. The oil outlet is connected with an oil delivery main pipe 303.
An embodiment of the second aspect of the present invention provides a working machine, including a multistage control system for a water pump as described above.
For example, in one embodiment of the present invention, the work machine includes an excavator.
It should be understood that the above-described embodiment is only an exemplary embodiment of the present invention, and does not constitute any limitation to the present invention. For example, in another embodiment of the present invention, the working machine may further include a heading machine or a shield machine.
Further, since the working machine includes the water pump multistage control system as described above, it also has the advantages as described above.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A water pump multi-stage control system, comprising: an oil source, a control valve, a plurality of oil transportation branch pipes, a plurality of pressure regulating valves and a water pump,
one end of each oil delivery branch pipe is connected with the oil source through the control valve, the other end of each oil delivery branch pipe is connected with an oil inlet of the water pump, the control valve is used for controlling the communication state of each oil delivery branch pipe and the oil source, and the pressure regulating valve is arranged on each oil delivery branch pipe.
2. The multi-stage control system for a water pump of claim 1, wherein the plurality of oil delivery legs includes a first oil delivery leg and a second oil delivery leg, the plurality of pressure regulating valves includes a first pressure regulating valve and a second pressure regulating valve,
one end of the first oil delivery branch pipe is connected with the oil source through the control valve, the other end of the first oil delivery branch pipe is connected with an oil inlet of the water pump, the first pressure regulating valve is installed on the first oil delivery branch pipe,
one end of the second oil delivery branch pipe is connected with the oil source through the control valve, the other end of the second oil delivery branch pipe is connected with an oil inlet of the water pump, the second pressure regulating valve is installed on the second oil delivery branch pipe,
the control valve is used for controlling the communication state of the first oil transportation branch pipe and the second oil transportation branch pipe with the oil source.
3. The multi-stage control system for a water pump according to claim 2, wherein the oil source includes an oil pump and an oil tank,
the inlet of the oil pump is connected with the oil tank, and the outlet of the oil pump is connected with the control valve.
4. The multi-stage control system for a water pump according to claim 3, wherein the control valve includes a first communication location and a second communication location,
in the state of the first communication position, the first oil delivery branch pipe is communicated with the oil pump through the control valve, and the second oil delivery branch pipe is communicated with the oil tank through the control valve;
and in the state of the second communication position, the second oil delivery branch pipe is communicated with the oil pump through the control valve, and the first oil delivery branch pipe is communicated with the oil tank through the control valve.
5. The multi-stage control system for a water pump of claim 4, wherein the control valve further comprises a shut-off position,
and in the state of the stopping position, the first oil delivery branch pipe, the oil pump and the oil tank are all stopped, and the second oil delivery branch pipe, the oil pump and the oil tank are all stopped.
6. The multistage control system for the water pump according to claim 5, wherein the control valve comprises a three-position four-way reversing valve, the three-position four-way reversing valve comprises a first control oil port and a second control oil port, and the first control oil port and the second control oil port are used for controlling the three-position four-way reversing valve to switch between the first communicating position, the second communicating position and the stopping position.
7. The multistage control system of a water pump according to any one of claims 2 to 6, further comprising an oil delivery main pipe, one end of the oil delivery main pipe being connected to the first oil delivery branch pipe and the second oil delivery branch pipe, the other end of the oil delivery main pipe being connected to an oil inlet of the water pump,
and a locking valve is arranged between the first oil transportation branch pipe and the second oil transportation branch pipe and used for stopping the first oil transportation branch pipe and the second oil transportation branch pipe.
8. The multi-stage control system for a water pump of claim 7, wherein the locking valve comprises a first one-way valve and a second one-way valve, the first one-way valve being mounted to the first branch and the second one-way valve being mounted to the second branch.
9. The water pump multi-stage control system of claim 7, wherein the latch valve comprises a shuttle valve, the shuttle valve comprising a first oil inlet, a second oil inlet, and an oil outlet, the first oil inlet being connected to the first oil delivery branch, the second oil inlet being connected to the second oil delivery branch, the oil outlet being connected to the oil delivery main.
10. A work machine, characterized by comprising a water pump multistage control system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221901190.0U CN217950643U (en) | 2022-07-21 | 2022-07-21 | Water pump multistage control system and operation machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221901190.0U CN217950643U (en) | 2022-07-21 | 2022-07-21 | Water pump multistage control system and operation machinery |
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| Publication Number | Publication Date |
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| CN217950643U true CN217950643U (en) | 2022-12-02 |
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| CN202221901190.0U Active CN217950643U (en) | 2022-07-21 | 2022-07-21 | Water pump multistage control system and operation machinery |
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2022
- 2022-07-21 CN CN202221901190.0U patent/CN217950643U/en active Active
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