CN211738085U - High-pressure ball valve for ultrahigh-pressure hydraulic pump - Google Patents
High-pressure ball valve for ultrahigh-pressure hydraulic pump Download PDFInfo
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- CN211738085U CN211738085U CN201922365429.1U CN201922365429U CN211738085U CN 211738085 U CN211738085 U CN 211738085U CN 201922365429 U CN201922365429 U CN 201922365429U CN 211738085 U CN211738085 U CN 211738085U
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Abstract
A high-pressure ball valve for an ultrahigh-pressure hydraulic pump comprises a valve body, a valve cover, a supporting plate, a thrust bearing, a ball body, a valve seat, a spiral spring and a valve rod; one end of the valve body is an outlet end, the other end of the valve body is an inlet end, a valve cover is arranged outside the valve body, and a ball body is arranged inside the valve body; valve seats are arranged on two sides of the ball body, the valve seats are elastic valve seats, and spiral springs are arranged at sealing pairs of the valve seats; a valve rod is arranged above the ball body, and the valve rod is of a lower-mounted valve rod structure; a thrust bearing is arranged below the ball body, and a supporting plate is arranged on one side of the thrust bearing. A high-pressure ball valve for superhigh pressure hydraulic pump, structural strength is high, satisfies the equal higher application environment of the inside medium velocity of flow of superhigh pressure hydraulic pump, temperature and pressure level, long service life, application prospect is extensive.
Description
Technical Field
The utility model relates to a hydraulic pump technical field, concretely relates to high-pressure ball valve for superhigh pressure hydraulic pump.
Background
With the development of society and the continuous progress of technology, the hydraulic transmission technology is more and more well known, and the application field is gradually developed from the traditional heavy industry to the light industry. Compared with the traditional mechanical transmission, the hydraulic transmission mainly has the following advantages: the hydraulic component has the advantages of large mass-power ratio, flexible connection, wide transmission range, flexible arrangement of hydraulic components, good shock resistance, convenient control and the like, and is mainly applied to the field of engineering at present.
Since the advent of hydraulic pumps, hydraulic pumps have been classified by structure into gear pumps, plunger pumps, vane pumps, screw pumps, and the like. The pressing force classification can be classified into low pressure, medium pressure, high pressure, and ultra high pressure. With the development of hydraulic technology, over thirty megapascals of pressure have become conventional, and ultrahigh pressure hydraulic pumps are widely used, and ultrahigh pressure refers to pressure of over 50MPa according to the current standard.
The ball valve can be used for distributing the flow of the medium and changing the flow direction and the on-off function of the medium. Because the ball valve has its unique advantages: (1) the ball valve has small fluid resistance coefficient (2), compact and reliable structure, wide plastic used for the sealing surface material of the existing ball valve and good sealing property; (3) the ball valve is convenient to maintain, has a simple structure, is mostly a movable sealing ring, and is convenient to disassemble and replace; (4) the operation is convenient, the switch is rapid, and the rotation from full on to full off is only 90 degrees, so that the remote control is convenient; (5) the corrosion and abrasion of the sealing surface are not easy to occur; (6) the structure is simple, the volume is small and exquisite, and the weight is lighter; (7) the valve has large aperture variable range, can be produced from several millimeters to several hundred meters, and is widely used under the working conditions of high pressure and high vacuum.
For the ultrahigh pressure hydraulic pump, a high pressure ball valve is extremely important, and the performance and the manufacturing cost of the high pressure ball valve are one of the signs for judging whether the ultrahigh pressure hydraulic pump is designed successfully or not. Therefore, it is necessary to develop a high pressure ball valve for an ultrahigh pressure hydraulic pump, which follows the above principle and improves the sealing performance of the sealing device of the conventional ultrahigh pressure hydraulic pump.
Chinese patent application No. CN201521101060.9 discloses a flat hydraulic control valve group, which comprises a flat valve seat, and a first high-pressure ball valve, a second high-pressure ball valve, a third high-pressure ball valve, an oil inlet pipe and an oil outlet pipe which are arranged on the flat valve seat, the structure is simpler, the design of the ultra-high pressure hydraulic pump is not aimed at, and the performance of the high-pressure ball valve can be further improved.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome not enough above, the utility model aims at providing a high-pressure ball valve for superhigh pressure hydraulic pump, structural strength is high, satisfies the equal higher application environment of the inside medium velocity of flow of superhigh pressure hydraulic pump, temperature and pressure level, long service life, and application prospect is extensive.
The technical scheme is as follows: a high-pressure ball valve for an ultrahigh-pressure hydraulic pump comprises a valve body, a valve cover, a supporting plate, a thrust bearing, a ball body, a valve seat, a spiral spring and a valve rod; one end of the valve body is an outlet end, the other end of the valve body is an inlet end, a valve cover is arranged outside the valve body, and a ball body is arranged inside the valve body; valve seats are arranged on two sides of the ball body, the valve seats are elastic valve seats, and spiral springs are arranged at sealing pairs of the valve seats; a valve rod is arranged above the ball body, and the valve rod is of a lower-mounted valve rod structure; a thrust bearing is arranged below the ball body, and a supporting plate is arranged on one side of the thrust bearing.
High-pressure ball valve for the superhigh pressure hydraulic pump, because the inside medium velocity of flow of superhigh pressure hydraulic pump, temperature and pressure level are all higher, the valve need bear great pressure in the course of the work, have higher requirement to its structural strength, consequently, high-pressure ball valve adopts fixed ball valve structure.
Under high pressure, the flow speed of the medium is high, and particularly the valve is just opened or closed at the moment, the valve seat of the ball valve is easily damaged or even cut off or washed away under the impact of the high-speed medium, so that the valve seal fails, and the valve is scrapped. Therefore, the elastic valve seat is selected, under the action of initial pretightening force and medium pressure, the elastic and plastic deformation generated by the valve seat is utilized to realize sealing, and due to the fact that the special structure of the valve seat per se is designed and assembled by means of a spiral spring, the elastic deformation is generated under the combined action of the initial pretightening force and the medium pressure, the elastic deformation is used for compensating the change caused by temperature difference, pressure change, abrasion and the like, and the technical problem is solved.
The valve stem is the component connecting the drive means and the actuator. The valve rod is of a lower-mounted valve rod structure, the valve rod of the structure adopts a lower-mounted structure with side sealing, the assembly part of the valve rod can realize the function of reverse sealing, the sealing force of the reverse sealing can be increased along with the increase of the medium pressure in the middle cavity, and the reliable sealing function of the connecting part of the valve rod is realized; and when the pressure of the cavity in the valve is abnormally increased, the valve rod cannot be flushed out, so that the probability of accidents is greatly reduced.
Further, foretell a high pressure ball valve for superhigh pressure hydraulic pump, the valve body is three-piece structure, the valve body includes well valve body side valve body one, side valve body two, well valve body passes through bolted connection with the side valve body one, the side valve body two that are located both sides.
The valve body is of a three-piece structure, and the forging manufacturability is good. The middle valve body can be forged by a conventional forging process without a special forging and pressing die, and can also be a thick-wall seamless structural steel pipe, and the first and second side valve bodies are actually a pair of welding flanges. The middle valve body is connected with the first valve body and the second valve body at two ends through bolts, and the bolts of the middle valve body and the first valve body and the second valve body at two ends in the connection not only have the function of a connection structure, but also overcome the reaction force of initial pre-tightening of a spiral spring at the sealing position of the valve seat and overcome the pressure of a medium in the middle cavity.
Furthermore, according to the high-pressure ball valve for the ultrahigh-pressure hydraulic pump, a plurality of sealing gaskets are arranged at the joints of the middle valve body and the side valve bodies I and II positioned on the two sides.
Further, the above-mentioned high pressure ball valve for superhigh pressure hydraulic pump, valve rod both sides are provided with the filler, still be provided with the packing between valve rod and the filler and press the cover.
Furthermore, V-shaped packing is arranged between the valve rod and the ball body of the high-pressure ball valve for the ultrahigh-pressure hydraulic pump.
The valve rod adopts V-shaped packing, and the pretightening force and the medium force of the packing gland can be effectively converted into the sealing force of the valve rod.
Furthermore, one side of the valve rod of the high-pressure ball valve for the ultrahigh-pressure hydraulic pump is also provided with a positioning pin.
Further, the base is further arranged below the middle valve body of the high-pressure ball valve for the ultrahigh-pressure hydraulic pump.
Further, in the high-pressure ball valve for the ultrahigh-pressure hydraulic pump, a drain valve is arranged at the center below the ball body and the middle valve body.
The utility model has the advantages that:
(1) the high-pressure ball valve for the ultrahigh-pressure hydraulic pump is used for the ultrahigh-pressure hydraulic pump, has high structural strength, meets the application environment with higher medium flow rate, temperature and pressure grade in the ultrahigh-pressure hydraulic pump, and has long service life;
(2) the high-pressure ball valve for the ultrahigh-pressure hydraulic pump is used for compensating the change caused by temperature difference, pressure change, abrasion and the like, solves the problem that the valve seat of the ball valve is easily damaged, cut off or washed off due to the high flowing speed of a medium under the high-pressure condition, and prolongs the service life;
(3) the high-pressure ball valve for the ultrahigh-pressure hydraulic pump has the advantages that the rod adopts a side-sealing bottom-mounted structure, the assembly part of the valve rod can realize the function of reverse sealing, the sealing force of the reverse sealing can be increased along with the increase of the medium pressure in the middle cavity, and the reliable sealing effect of the connection part of the valve rod is realized; and when the pressure of the cavity in the valve is abnormally increased, the valve rod cannot be flushed out, so that the probability of accidents is greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of a high-pressure ball valve for an ultrahigh-pressure hydraulic pump according to the present invention;
in the figure: the valve comprises a valve body 1, an outlet end 11, an inlet end 12, a middle valve body 13, a base 131, a first side valve body 14, a second side valve body 15, a bolt 16, a sealing gasket 17, a valve cover 2, a supporting plate 3, a thrust bearing 4, a ball body 5, a valve seat 6, a spiral spring 7, a valve rod 8, a positioning pin 81, a packing 9, a packing pressing sleeve 91, a V-shaped packing 92 and a drain valve 10.
Detailed Description
The invention will be further elucidated with reference to fig. 1 and an exemplary embodiment.
The high-pressure ball valve for the ultrahigh-pressure hydraulic pump with the structure as shown in fig. 1 comprises a valve body 1, a valve cover 2, a supporting plate 3, a thrust bearing 4, a ball body 5, a valve seat 6, a spiral spring 7 and a valve rod 8; one end of the valve body 1 is an outlet end 11, the other end of the valve body is an inlet end 12, a valve cover 2 is arranged outside the valve body 1, and a ball body 5 is arranged inside the valve body 1; two sides of the sphere 5 are provided with valve seats 6, the valve seats 6 are elastic valve seats, and a spiral spring 7 is arranged at a sealing pair of the valve seats 6; a valve rod 8 is arranged above the ball body 5, and the valve rod 8 is of a lower-mounted valve rod structure; a thrust bearing 4 is arranged below the ball body 5, and a supporting plate 3 is arranged on one side of the thrust bearing 4.
In addition, the valve body 1 is of a three-piece structure, the valve body 1 comprises a first middle valve body 13, a first side valve body 14 and a second side valve body 15, and the middle valve body 13 is connected with the first side valve body 14 and the second side valve body 15 on two sides through bolts 16.
In addition, a plurality of sealing gaskets 17 are arranged at the joints of the middle valve body 13 and the side valve bodies 14 and 15 positioned at the two sides.
Further, packing 9 is arranged on two sides of the valve rod 8, and a packing pressing sleeve 91 is further arranged between the valve rod 8 and the packing 9.
Further, a V-shaped packing 92 is arranged between the valve rod 8 and the ball 5.
Further, a positioning pin 81 is further disposed on one side of the valve rod 8.
Further, a base 131 is further disposed below the middle valve body 13. A drain valve 10 is arranged at the center below the ball body 5 and the middle valve body 13.
Example (b): based on the above structural basis, as shown in fig. 1.
A high-pressure ball valve for superhigh pressure hydraulic pump, simple structure for superhigh pressure hydraulic pump because the inside medium velocity of flow of superhigh pressure hydraulic pump, temperature and pressure level are all higher, the valve need bear great pressure in the course of the work, have higher requirement to its structural strength, consequently, high-pressure ball valve adopts fixed ball valve structure.
Under high pressure, the flow speed of the medium is high, and particularly the valve is just opened or closed at the moment, the valve seat of the ball valve is easily damaged or even cut off or washed away under the impact of the high-speed medium, so that the valve seal fails, and the valve is scrapped. Therefore, the elastic valve seat of the valve seat 6 is selected, under the action of the initial pretightening force and the medium pressure, the elastic-plastic deformation generated by the valve seat 6 is used for realizing sealing, and due to the fact that the special structure of the valve seat 6 per se is designed and assembled by means of the spiral spring, the elastic deformation is generated under the combined action of the initial pretightening force and the medium pressure, the change caused by temperature difference, pressure change, abrasion and the like is compensated, and the technical problem is solved.
The valve rod 8 is a member connecting the driving means and the actuator. The valve rod 8 is of a lower-mounted valve rod structure, the valve rod 8 of the structure adopts a lower-mounted structure with side sealing, the assembly part of the valve rod 8 can realize the function of reverse sealing, the sealing force of the reverse sealing can be increased along with the increase of the medium pressure in the middle cavity, and the reliable sealing function of the connecting part of the valve rod is realized; and when the pressure of the cavity in the valve is abnormally increased, the valve rod cannot be flushed out, so that the probability of accidents is greatly reduced.
Furthermore, the valve body 1 is of a three-piece structure, and the forging manufacturability is good. The middle valve body 13 can be manufactured by a conventional forging process without a special forging die, and can also be made of a thick-wall seamless structural steel pipe, and the first side valve body, the second side valve body 14 and the second side valve body 15 are actually a pair of welding flanges. The middle valve body 13 is connected with the first valve body, the second valve body 14 and the second valve body 15 at two ends through bolts 16, and the bolts 16 of the middle valve body 13 and the first valve body, the second valve body 14 and the second valve body 15 in the connection not only play a role of a connecting structure, but also overcome the reaction force of initial pretension of the spiral spring 7 at the sealing part of the valve seat 6 and overcome the pressure of a middle cavity medium.
Furthermore, the valve rod 8 adopts the V-shaped packing 92, so that the pre-tightening force and medium force of the packing 9 gland can be effectively converted into the sealing force of the valve rod 8.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, the embodiments of the present invention can be arbitrarily combined with each other, and the same shall be regarded as the disclosure of the present invention as long as the idea of the present invention is not violated.
Claims (8)
1. A high-pressure ball valve for an ultrahigh-pressure hydraulic pump is characterized by comprising a valve body (1), a valve cover (2), a supporting plate (3), a thrust bearing (4), a ball body (5), a valve seat (6), a spiral spring (7) and a valve rod (8); one end of the valve body (1) is an outlet end (11) and the other end of the valve body is an inlet end (12), a valve cover (2) is arranged outside the valve body (1), and a ball body (5) is arranged inside the valve body (1); valve seats (6) are arranged on two sides of the ball body (5), the valve seats (6) are elastic valve seats, and spiral springs (7) are arranged at sealing pairs of the valve seats (6); a valve rod (8) is arranged above the ball body (5), and the valve rod (8) is of a lower-mounted valve rod structure; a thrust bearing (4) is arranged below the ball body (5), and a supporting plate (3) is arranged on one side of the thrust bearing (4).
2. The high pressure ball valve for an ultrahigh pressure hydraulic pump according to claim 1, wherein the valve body (1) is of a three-piece structure, the valve body (1) comprises a first side valve body (14) and a second side valve body (15) of a middle valve body (13), and the middle valve body (13) is connected with the first side valve body (14) and the second side valve body (15) on two sides through bolts (16).
3. The high pressure ball valve for an ultrahigh pressure hydraulic pump according to claim 2, wherein a plurality of sealing washers (17) are arranged at the joints of the middle valve body (13) and the side valve bodies I (14) and II (15) positioned at the two sides.
4. The high pressure ball valve for an ultrahigh pressure hydraulic pump according to claim 1, wherein a packing (9) is provided on both sides of the valve stem (8), and a packing pressing sleeve (91) is further provided between the valve stem (8) and the packing (9).
5. The high pressure ball valve for an ultrahigh pressure hydraulic pump according to claim 2, wherein a V-shaped packing (92) is provided between the valve stem (8) and the ball (5).
6. The high pressure ball valve for an ultrahigh pressure hydraulic pump according to claim 5, wherein a positioning pin (81) is further provided at one side of the valve stem (8).
7. The high pressure ball valve for an ultrahigh pressure hydraulic pump according to claim 2, wherein a seat (131) is further provided below the middle valve body (13).
8. The high pressure ball valve for an extra high pressure hydraulic pump according to claim 2, wherein a blowoff valve (10) is provided at the center below the ball body (5) and the middle valve body (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922365429.1U CN211738085U (en) | 2019-12-25 | 2019-12-25 | High-pressure ball valve for ultrahigh-pressure hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922365429.1U CN211738085U (en) | 2019-12-25 | 2019-12-25 | High-pressure ball valve for ultrahigh-pressure hydraulic pump |
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| Publication Number | Publication Date |
|---|---|
| CN211738085U true CN211738085U (en) | 2020-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922365429.1U Active CN211738085U (en) | 2019-12-25 | 2019-12-25 | High-pressure ball valve for ultrahigh-pressure hydraulic pump |
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| Country | Link |
|---|---|
| CN (1) | CN211738085U (en) |
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- 2019-12-25 CN CN201922365429.1U patent/CN211738085U/en active Active
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