High-pressure valve element structure capable of avoiding abrasion

Abstract

The utility model relates to the technical field of knife rest water outlet valve elements, in particular to a high-pressure valve element structure capable of avoiding abrasion. Comprising a water outlet valve seat and a water outlet valve element. The water outlet valve element is arranged in the water outlet valve seat and provided with a valve element piston. A retraction oil way and an extension oil way are arranged in the water outlet valve seat, the retraction oil way and the extension oil way respectively pass through the structures at the front end and the rear end of the valve element piston, so that the telescopic valve element can control the advancing and retreating actions, and the valve element acts to extend out to be tightly attached to the end face of the cutter head when the cutter head rotates in place and high-pressure cooling needs to be provided; when the cutterhead needs to be subjected to transposition tool changing, the valve element retracts to be separated from the end face of the cutterhead, and the valve element is tightly attached to the end face of the cutterhead again after the cutterhead completes the rotary tool changing action, so that functional loss caused by abrasion of the valve element due to hard friction is avoided, reliable sealing of the attaching face can be guaranteed for a long time, the maintenance and replacement frequency is reduced, and the product application reliability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of knife rest water outlet valve core, especially to a high pressure valve core structure can avoid abrasion. BACKGROUND

[0002] The application of high pressure water outlet function in the knife rest structure is increasingly widespread, and its core is that the water outlet valve core closely adheres to the water inlet end face of the cutter head to ensure that the high pressure cooling liquid is smoothly delivered to the cutter head cooling liquid passage. However, the control of this link is extremely critical and challenging because it is necessary to ensure that the contact part is tightly sealed to prevent high pressure cooling liquid from leaking. In the prior art, a strong elastic compression spring is generally installed at the rear end of the valve core, and the spring force is used to make the valve core closely adhere to the cutter head end face to cope with the leakage problem. However, this method has the problem that during the circumferential rotation of the cutter head for tool changing, the valve core end face inevitably produces hard friction with it, especially when the valve core slides through multiple water outlets, which will cause hard wear of the contact end face, and over a long period of time, grooves will be formed, thereby causing poor contact and cooling liquid spattering and leakage problems. SUMMARY

[0003] The utility model discloses a high pressure valve core structure can avoid abrasion to solve the prior art technical problems that the hard friction between the valve core and the cutter head end face will cause the hard wear of the contact end face, and over a long period of time, grooves will be formed, thereby causing poor contact and cooling liquid spattering and leakage problems.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of: including water outlet valve seat and water outlet valve core, the water outlet valve core is arranged in the water outlet valve seat, the water outlet valve core is provided with valve core piston, the water outlet valve seat is provided with retracting oil way and extending oil way, the retracting oil way and the extending oil way pass through the front and rear ends of the valve core piston respectively.

[0005] Further, the water outlet valve seat is provided with a cooling liquid passage, and the cooling liquid passage is arranged at the rear end of the water outlet valve core.

[0006] Further, the front end of the water outlet valve core is provided with a front gland.

[0007] Further, the retracting oil way, the cooling liquid passage and the extending oil way are respectively provided with oil guide holes.

[0008] Further, the oil guide holes in the retracting oil way, the cooling liquid passage and the extending oil way are distributed in an oblique line from top to bottom.

[0009] Further, the retracting oil passage forces the outlet water valve core to retract inward under pressure, and the rear end surface of the outlet water valve core is attached to the rear taper angle part of the outlet water valve seat, and the cooling liquid passage is blocked.

[0010] Further, a plurality of sealing rings are arranged in the outlet water valve core.

[0011] Further, the retracting oil passage is communicated above and in front of the valve core piston.

[0012] Further, the extending oil passage is communicated below and in rear of the valve core piston.

[0013] By comprising an outlet water valve seat and an outlet water valve core, the outlet water valve core is arranged in the outlet water valve seat, the outlet water valve core is provided with a valve core piston, the outlet water valve seat is provided with a retracting oil passage and an extending oil passage, the retracting oil passage and the extending oil passage are communicated through the structure of the front and rear ends of the valve core piston, so that the extending and retracting valve core can control the advancing and retracting actions, when the high-pressure cooling needs to be provided when the cutter head is rotated to the position, the valve core is extended to be attached to the end surface of the cutter head, when the cutter head needs to be rotated to change the cutter, the valve core is retracted to be separated from the end surface of the cutter head, after the cutter head is rotated to change the cutter, the valve core is attached to the end surface of the cutter head again, the function loss caused by the wear of the valve core due to the hard friction is avoided, the sealing reliability of the attached surface can be ensured for a long time, the maintenance and replacement frequency is reduced, and the product application reliability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0015] Fig. 1 It is a schematic diagram of the high-pressure valve core structure which can avoid wear of the present application;

[0016] Fig. 2 It is a front view of the high-pressure valve core structure which can avoid wear of the present application;

[0017] Fig. 3 It is a sectional view of the high-pressure valve core structure which can avoid wear of the present application;

[0018] Fig. 4 It is a schematic diagram of the extending state of the high-pressure valve core structure which can avoid wear of the present application;

[0019] Fig. 5 It is a schematic diagram of the retracting state of the high-pressure valve core structure which can avoid wear of the present application.

[0020] Reference signs:

[0021] Water outlet valve seat 1, rear conical angle part 1-1, water outlet valve core 2, valve core piston 2-1, retraction oil way 3, extension oil way 4, cooling liquid passage 5, front gland 6, oil guide hole 7. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] In the description of the utility model, it should be noted that the orientation or position relationship indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] A high-pressure valve core structure capable of avoiding abrasion, as shown in Figs. 1-5 The water outlet valve core 2 is arranged in the water outlet valve seat 1, and the water outlet valve core 2 is provided with a valve core piston 2-1. The water outlet valve seat 1 is provided with a retraction oil way 3 and an extension oil way 4, and the retraction oil way 3 and the extension oil way 4 pass through the front and rear ends of the valve core piston 2-1, respectively.

[0025] Specifically, by the water outlet valve core 2 that can control the advance and retreat action, the wear caused by hard friction of the traditional valve core is avoided, the service life of the valve core is significantly prolonged, the leakage problem caused by wear is reduced, the wear-free operation of the valve core in the high-pressure cooling liquid environment is realized, the reliability and stability of the system are improved, the valve core piston 2-1 is provided to enable the valve core to realize the extension and retraction action according to the direction of the pressure oil, so as to be attached to the cutter head water inlet end face when needed and separated therefrom when not needed, the automatic control of the valve core is realized by using the action of the pressure oil, the automation degree and response speed of the system are improved, the retracting oil way 3 and the extending oil way 4 pass through the front and rear ends of the valve core piston 2-1 respectively, the accurate control of the valve core action is realized, the extension and retraction action of the valve core is more stable and reliable, the wear and leakage problems caused by hard friction in the traditional valve core structure are solved by the innovation of the oil way design, the overall performance of the system is improved, when the cutter head needs to be indexed and the tool is changed, the valve core is retracted and separated from the cutter head water inlet end face, the wear caused by hard friction in the rotation process is avoided, the combination surface of the valve core and the cutter head water inlet end face is effectively protected, the service life of the system is prolonged, and the maintenance cost is reduced. The whole high-pressure valve core structure is compact and reasonable, the cooperation between the components is tight, efficient and stable work is realized, the reliability and durability of the system are improved by the optimization of the overall structure, and strong support is provided for the wide application of the high-pressure water outlet function in the tool holder structure.

[0026] As a preferred embodiment of the above, as shown in Figs. 1-5 The water outlet valve seat 1 is provided with a cooling liquid passage 5, and the cooling liquid passage 5 is arranged at the rear end of the water outlet valve core 2.

[0027] Specifically, by arranging the cooling liquid passage 5 at the rear end of the water outlet valve core 2, the whole valve core structure is more compactly integrated with the cooling liquid supply system, the additional pipeline connection and space occupation are reduced, the integration degree and space utilization rate of the whole system are improved, the cooling liquid passage 5 is directly located at the rear end of the water outlet valve core 2, which can ensure that the cooling liquid is quickly and efficiently transmitted to the cutter head water inlet end face when needed, the flow resistance and time delay of the cooling liquid are reduced, the cooling effect and system response speed are improved, and at the same time, due to the integrated design of the cooling liquid passage 5, the water outlet valve seat 1 and the water outlet valve core 2, the installation and maintenance process becomes simpler and more direct, the complexity of disassembly and reassembly is reduced, and the maintenance cost and time are reduced.

[0028] As a preferred embodiment of the above, as shown in Figs. 1-5 The front end of the water outlet valve core 2 is provided with a front gland 6.

[0029] Specifically, the sealing performance between the outlet valve core 2 and the cutter head water inlet end face can be further enhanced by the setting of the front gland 6. The front gland 6 provides additional pressure and support to ensure that the valve core tightly fits the cutter head end face under high pressure, preventing coolant leakage. The front gland 6 can also protect the front end of the valve core. During the rotation of the cutter head, the front gland 6 can withstand friction and impact with the cutter head end face, thereby prolonging the service life of the valve core, reducing maintenance costs due to wear and tear, and enhancing the stability of the entire valve core structure. The combination of the front gland 6 and the outlet valve core 2 makes the valve core more solid and durable under high pressure and high-speed rotation, improving the reliability and durability of the system.

[0030] As a preferred embodiment of the above, as shown in Figs. 1-5 The retracting oil way 3, the coolant passage 5, and the extending oil way 4 are respectively provided with oil guide holes 7.

[0031] As a preferred embodiment of the above, as shown in Figs. 1-5 The oil guide holes 7 in the retracting oil way 3, the coolant passage 5, and the extending oil way 4 are distributed in a diagonal line from top to bottom.

[0032] Specifically, by setting oil guide holes 7 in the retracting oil way 3, the coolant passage 5, and the extending oil way 4, and distributing these oil guide holes 7 in a diagonal line from top to bottom, the cooling liquid flow is optimized, the oil way stability is enhanced, the cooling effect is improved, the system efficiency is improved, the energy consumption is reduced, the system adaptability is enhanced, the maintenance is simplified, and the sealing performance of the oil way is also enhanced. By optimizing the fluid flow path, the possibility of leakage is reduced, thereby improving the overall stability and reliability of the system.

[0033] As a preferred embodiment of the above, as shown in Figs. 1-5 The retracting oil way 3 forces the outlet valve core 2 to retract inward under pressure, and the rear end face of the outlet valve core 2 fits the rear conical angle part 1-1 of the outlet valve seat 1 and blocks the coolant passage 5.

[0034] Specifically, by the design of the retracting oil path 3, the outlet valve core 2 can accurately retract inward under pressure and tightly fit with the rear taper angle part 1-1 of the outlet valve seat 1, ensuring the accuracy and reliability of the valve core when closed, effectively preventing the leakage of cooling liquid. When the rear end face of the outlet valve core 2 is in close contact with the rear taper angle part 1-1 of the outlet valve seat 1, it can quickly and completely block the cooling liquid passage 5, helping to quickly cut off the cooling liquid supply when the system needs to stop cooling, avoiding unnecessary energy consumption and potential failure risks. The design of the rear taper angle part 1-1 not only provides a tight fit with the rear end face of the outlet valve core 2, but also enhances the sealing performance, helping to reduce cooling liquid leakage problems caused by poor sealing and improving the overall performance and reliability of the system. By utilizing the retracting oil path 3 and the rear taper angle part 1-1 of the outlet valve seat 1 to achieve precise control of the valve core and blockage of the cooling liquid, complex mechanical structures and additional sealing elements are avoided, not only reducing manufacturing costs, but also improving the reliability and durability of the system.

[0035] As a preferred embodiment of the above, as shown in Figs. 1-5 The outlet valve core 2 is also provided with several sealing rings.

[0036] Specifically, by setting several sealing rings in the outlet valve core 2, the sealing performance between the valve core and the valve seat can be significantly improved, helping to prevent cooling liquid from leaking from the tiny gap between the valve core and the valve seat under high pressure or high temperature conditions, ensuring the stability and reliability of the system.

[0037] As a preferred embodiment of the above, as shown in Figs. 1-5 The retracting oil path 3 is connected to the front end and above of the valve core piston 2-1.

[0038] As a preferred embodiment of the above, as shown in Figs. 1-5 The extending oil path 4 is connected to the rear end and below of the valve core piston 2-1.

[0039] Specifically, by connecting the retracting oil path 3 to the front end and above of the valve core piston 2-1, and connecting the extending oil path 4 to the rear end and below of the valve core piston 2-1, the effective connection of the oil path during the movement of the valve core piston is ensured, reducing the risk of oil path blockage and improving the flow efficiency of the oil path. Due to the optimization of the oil path layout, the valve core piston 2-1 can respond faster and move to the right position after receiving the control signal. This helps to improve the response speed and dynamic performance of the system, so that the outlet valve can be opened or closed more quickly, making it easier to check and clean the oil path during maintenance and repair. Once the oil path has a problem, maintenance personnel can quickly locate and solve it, reducing maintenance costs and time.

[0040] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-pressure valve core structure capable of avoiding wear, characterized in that: it comprises a water outlet valve seat (1) and a water outlet valve core (2); the water outlet valve core (2) is arranged in the water outlet valve seat (1), and the water outlet valve core (2) is provided with a valve core piston (2-1); the water outlet valve seat (1) is provided with a retracting oil passage (3) and an extending oil passage (4), and the retracting oil passage (3) and the extending oil passage (4) pass through the front and rear ends of the valve core piston (2-1), respectively; the water outlet valve seat (1) is provided with a cooling liquid passage (5), and the cooling liquid passage (5) is arranged at the rear end of the water outlet valve core (2); the front end of the water outlet valve core (2) is provided with a front gland (6); the retracting oil passage (3), the cooling liquid passage (5) and the extending oil passage (4) are respectively provided with oil guide holes (7); the oil guide holes (7) in the retracting oil passage (3), the cooling liquid passage (5) and the extending oil passage (4) are arranged in an inclined line from top to bottom; the retracting oil passage (3) forces the water outlet valve core (2) to retract inward under the action of pressure, and after the water outlet valve core (2) retracts, the rear end face of the water outlet valve core (2) is attached to the rear conical angle part (1-1) of the water outlet valve seat (1) and the cooling liquid passage (5) is blocked; the water outlet valve core (2) is further provided with a plurality of sealing rings; the retracting oil passage (3) is communicated above and at the front end of the valve core piston (2-1); and the extending oil passage (4) is communicated below and at the rear end of the valve core piston (2-1). ​ ​ ​ 2. The high pressure spool structure according to claim 1, wherein ​ 3. The high pressure spool structure according to claim 2, wherein ​ 4. The high pressure spool structure according to claim 2, wherein ​ 5. The high pressure spool structure according to claim 4, wherein ​ 6. The high pressure spool structure according to claim 5, wherein ​ 7. The high pressure spool structure according to claim 1, wherein ​ 8. The high pressure spool structure according to claim 1, wherein ​ 9. The high pressure spool structure according to claim 8, wherein ​

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