CN219492743U - Throttle valve for hydraulic support liquid supply system of fully-mechanized mining face - Google Patents
Throttle valve for hydraulic support liquid supply system of fully-mechanized mining face Download PDFInfo
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- CN219492743U CN219492743U CN202320585506.8U CN202320585506U CN219492743U CN 219492743 U CN219492743 U CN 219492743U CN 202320585506 U CN202320585506 U CN 202320585506U CN 219492743 U CN219492743 U CN 219492743U
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- liquid supply
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Abstract
The utility model relates to a throttle valve for a hydraulic support liquid supply system of a fully mechanized coal mining face, and belongs to the technical field of comprehensive coal mining. The valve comprises a stepping motor, a left end cover, a valve body, a right end cover, a valve sleeve, a valve core and a key, wherein the stepping motor is connected with the left end cover through a bolt, an output shaft of the stepping motor is connected with the valve core through the key, an external thread is formed at the left end of the valve core, an internal thread is formed at the left end of the valve core, a thread pair is formed between the external thread at the left end of the valve core and the internal thread of the left end cover, the left end cover is connected with the left end of the valve body through the bolt, the right end cover is connected with the right end of the valve body through the bolt, the valve sleeve is arranged in the valve body and fixed through a pin, a valve core is arranged in the valve sleeve, a valve inlet is connected with an emulsion pump of a liquid supply system, and a valve outlet is connected with an oil inlet pipeline of a hydraulic support. The output shaft of the stepping motor is connected with the valve core, and the flow provided by the liquid supply system of the hydraulic support is flexibly regulated and controlled through the rotation of the stepping motor, so that the cooperative self-adaptive control of the hydraulic support and the liquid supply system is realized.
Description
Technical Field
The utility model relates to the technical field of comprehensive coal mining, in particular to a throttle valve for a hydraulic support liquid supply system of a fully mechanized mining face.
Background
The working principle of the hydraulic support liquid supply system is as follows: the liquid supply system outputs high-pressure power emulsion with certain flow through the emulsion pump, pressure liquid enters the hydraulic support through the liquid inlet pipeline, each action hydraulic cylinder of the hydraulic support is controlled through a corresponding electro-hydraulic reversing valve, liquid is injected or discharged from the hydraulic cylinder, the load is pushed by means of hydraulic energy, each support action is completed, and the emulsion discharged from the hydraulic cylinder returns to a hydraulic tank of the liquid supply system through the liquid return pipeline, so that hydraulic circulation is formed.
The existing hydraulic support liquid supply mode is that most of flow is pumped out from emulsion to an on-off type electrohydraulic control element and then to a driving oil cylinder of the hydraulic support to drive the hydraulic support to act. The on-off type electrohydraulic control element can not control the speed of the electrohydraulic control element by controlling the flow, so that the pressure fluctuation and impact of a liquid supply system are large, the accurate control of the position of a hydraulic support can not be realized, and the automatic stable operation of an intelligent fully-mechanized mining working surface is influenced.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a throttle valve for a hydraulic support liquid supply system of a fully mechanized mining face. The technical scheme of the utility model is as follows:
the utility model provides a combine and adopt working face hydraulic support throttle valve for liquid feed system, it includes step motor, the left end cover, the valve body, the right-hand member lid, the valve pocket, case and key, step motor passes through bolted connection with the left end cover, step motor's output shaft passes through keyed connection with the case, open the left end of case has the external screw thread, open the left end cover has the internal screw thread, the external screw thread of case left end forms the screw thread pair with the internal screw thread of left end cover, bolted connection is passed through with the valve body left end to the left end lid, bolted connection is passed through with the valve body right-hand member to the right-hand member lid, the valve pocket is installed in the valve body and is fixed through the round pin, the case is installed in the valve pocket, the valve import is connected with the emulsification pump outlet of liquid feed system, the valve export is connected with the oil feed pipe of hydraulic support.
Optionally, the positions of the left end cover and the right end cover, which are contacted with the valve body, are provided with first O-shaped ring mounting grooves, and the first O-shaped rings are arranged in the first O-shaped ring mounting grooves.
Optionally, a plurality of second O-ring mounting grooves are formed in the valve sleeve at positions where the valve sleeve contacts with the valve body, and second O-rings are mounted on the valve sleeve.
Optionally, a combined O-ring is installed at the contact position of the valve core and the valve sleeve.
All the above optional technical solutions can be arbitrarily combined, and the detailed description of the structures after one-to-one combination is omitted.
By means of the scheme, the beneficial effects of the utility model are as follows:
the output shaft of the stepping motor is connected with the valve core, the flow provided by the hydraulic support liquid supply system is flexibly regulated and controlled through the rotation of the stepping motor, the large pressure fluctuation of the hydraulic support liquid supply system is avoided, the position of the hydraulic support can be accurately controlled, and the automatic stable operation of the intelligent fully-mechanized mining working face is ensured.
The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
As shown in fig. 1, the throttle valve for the hydraulic support liquid supply system of the fully-mechanized mining face comprises a stepping motor 1, a left end cover 2, a valve body 3, a right end cover 5, a valve sleeve 7, a valve core 8 and a key 10, wherein the stepping motor 1 is connected with the left end cover 2 through bolts, an output shaft of the stepping motor 1 is connected with the valve core 8 through the key 10, an external thread is formed at the left end of the valve core 8, an internal thread is formed at the left end of the left end cover 2, the external thread at the left end of the valve core 8 and the internal thread of the left end cover 2 form a thread pair, the left end cover 2 is connected with the left end of the valve body 3 through bolts, the right end cover 5 is connected with the right end of the valve body 3 through bolts, the valve sleeve 7 is arranged in the valve body 3 and fixed through a pin, the valve core 8 is arranged in the valve sleeve 7, a valve inlet 11 is connected with an emulsion pump outlet of the liquid supply system, and a valve outlet 12 is connected with an oil inlet pipeline of the hydraulic support.
The valve core 8 is driven by the stepping motor 1, and the screw thread pair has the effect of changing the rotation motion of the valve core 8 driven by the stepping motor 1 into linear motion and completing the control of the valve opening of the valve core 8 by the stepping motor 1.
When the stepping motor 1 drives the valve core 8 to rotate through the key 10 during operation, the screw thread pair converts the rotation motion of the stepping motor 1 into the linear motion of the valve core 8 in the valve sleeve 7, so that the control of the opening of the valve port of the valve core 8 is realized. Because the valve opening of the valve core 8 can be accurately controlled by the stepping motor 1, the amount of high-pressure power emulsion output by the emulsion supply system through the emulsion pump entering an oil inlet pipeline of the hydraulic support can be accurately controlled in the working process of the hydraulic support, and further the driving cylinder of the hydraulic support is accurately controlled to drive the hydraulic support to act, so that the accurate control of the position of the hydraulic support can be ensured. Therefore, the utility model ensures that the flow provided by the liquid supply system can be flexibly regulated and controlled through the stepping motor 1 when the hydraulic support acts, and is beneficial to realizing the cooperative self-adaptive control of the hydraulic support and the liquid supply system.
After the utility model is used, the following steps are carried out: when the supports push and slide in groups, the liquid supply system of the hydraulic support needs to have larger flow, the grouped pushing and slide signals are transmitted to the controller of the hydraulic support, the controller outputs large-flow control signals to the stepping motor 1, and the stepping motor 1 controls the valve core 3 to be opened to output large flow. When the single frame pushes away swift current, the liquid supply system needs the flow less, and single frame pushes away swift current signal transmission and gives the controller, and the controller outputs little flow control signal to step motor 1, and step motor 1 controls case 3 to open for a short time, output little flow. In a word, the speed of the hydraulic support pushing oil cylinder is controllable according to the requirement.
Optionally, the positions of the left end cover 2 and the right end cover 5, which are in contact with the valve body 3, are provided with first O-ring mounting grooves, and first O-rings 4 are arranged in the first O-ring mounting grooves. The arrangement of the first O-shaped ring 4 ensures the tightness between the left end cover 2 and the right end cover 5 and the valve body 3.
Optionally, a plurality of second O-ring mounting grooves are formed in the valve sleeve 7 at positions contacting the valve body 3, and second O-rings 6 are mounted in the second O-ring mounting grooves. The provision of the second O-ring 6 ensures tightness between the valve sleeve 7 and the valve body 3.
Optionally, a combined O-ring 9 is mounted at the contact position of the valve core 8 and the valve sleeve 7. The combined O-shaped sealing ring 9 is an O-shaped ring which is made by adding a layer of low friction material on the outer ring of a common O-shaped ring. Wherein, the low friction material refers to a material with a friction coefficient less than 0.2. By providing the combined O-ring 9, leakage problems of high water-based media can be reduced, and movement resistance of the valve core 8 can be reduced.
In conclusion, the utility model can realize the accurate control of the oil inlet amount of the hydraulic support, and further avoid the pressure impact and fluctuation of the hydraulic support caused by the liquid supply mode with fixed flow, thereby being beneficial to realizing the cooperative self-adaptive control of the hydraulic support and the liquid supply system, and leading the pressure of the hydraulic system of the hydraulic support in the whole action process to be stable within a limited range and not easy to generate fluctuation.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.
Claims (4)
1. The utility model provides a combine and adopt working face hydraulic support choke valve for liquid supply system, a serial communication port, including step motor (1), left end cover (2), valve body (3), right-hand member lid (5), valve pocket (7), case (8) and key (10), step motor (1) and left end cover (2) pass through bolted connection, step motor (1) output shaft and case (8) pass through key (10) to be connected, open the left end of case (8) has the external screw thread, open left end cover (2) has the internal screw thread, the external screw thread of case (8) left end forms the screw thread pair with the internal screw thread of left end cover (2), bolted connection is passed through with valve body (3) left end in left end cover (2), right-hand member lid (5) and valve body (3) right-hand member pass through bolted connection, valve pocket (7) are installed in valve body (3) and are fixed through the round pin, valve pocket (8) are installed in valve pocket (7), valve import (11) and the pump outlet (12) of liquid supply system are connected, oil feed pipeline with hydraulic support.
2. The throttle valve for the hydraulic support liquid supply system of the fully-mechanized mining face according to claim 1, wherein the positions of the left end cover (2) and the right end cover (5) which are contacted with the valve body (3) are provided with first O-shaped ring mounting grooves, and first O-shaped rings (4) are arranged in the first O-shaped ring mounting grooves.
3. The throttle valve for the hydraulic support liquid supply system of the fully-mechanized mining face according to claim 1, wherein a plurality of second O-shaped ring mounting grooves are formed in the valve sleeve (7) at positions contacted with the valve body (3), and second O-shaped rings (6) are mounted in the second O-shaped ring mounting grooves.
4. The throttle valve for the hydraulic support liquid supply system of the fully-mechanized mining face according to claim 1, wherein a combined O-shaped sealing ring (9) is arranged at the contact position of the valve core (8) and the valve sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320585506.8U CN219492743U (en) | 2023-03-22 | 2023-03-22 | Throttle valve for hydraulic support liquid supply system of fully-mechanized mining face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320585506.8U CN219492743U (en) | 2023-03-22 | 2023-03-22 | Throttle valve for hydraulic support liquid supply system of fully-mechanized mining face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219492743U true CN219492743U (en) | 2023-08-08 |
Family
ID=87510835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320585506.8U Active CN219492743U (en) | 2023-03-22 | 2023-03-22 | Throttle valve for hydraulic support liquid supply system of fully-mechanized mining face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219492743U (en) |
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2023
- 2023-03-22 CN CN202320585506.8U patent/CN219492743U/en active Active
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