Split type control valve sleeve
The combined design of the split control valve sleeve solves the problems of difficulty and low efficiency in center hole machining of electronically controlled high-pressure common rail injectors, achieving high-precision and efficient center hole machining.
Patent Information
- Application Number
- CN202423082615.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-12-12
AI Technical Summary
In the existing technology, the processing of the hole in the valve sleeve of the electronically controlled high-pressure common rail injector is difficult. During the grinding process, the front and rear ends of the grinding wheel wear unevenly, resulting in low processing efficiency and difficulty in ensuring the correct taper accuracy.
A split control valve sleeve structure is adopted, including a combined design of a through-hole valve sleeve, a gasket, a valve plate, a first locating pin and a second locating pin. The design of the connecting hole increases the grinding overtravel, thereby improving processing accuracy and efficiency.
The high-precision machining of the center hole of the control valve sleeve is achieved, the machining difficulty is reduced, the grinding efficiency is improved, and the positive tapered aperture requirement is guaranteed.
Smart Images
Figure CN223387660U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic control of electronically controlled high-pressure common rail fuel injectors, in particular to a split-type control valve sleeve. Background Art
[0002] In the field of hydraulic control of electronically controlled high-pressure common rail injectors, the valve sleeve and valve stem are matched as a pair with high matching precision. The matching clearance is usually between 2 microns and 3.5 microns. The size accuracy and form and position tolerance accuracy of the valve sleeve center hole are very high, and the valve sleeve center hole needs to ensure a positive cone to prevent the valve stem from getting stuck during movement.
[0003] In the existing technology, the center hole of the general control valve sleeve is a blind hole, which is processed by an ultra-high precision center hole grinder. Since the hole depth and hole diameter ratio of the valve sleeve center hole is very large, the grinding wheel rod will bend and vibrate during the grinding process, resulting in the grinding wheel wearing faster at the front end and slower at the rear end during the grinding process. The ground center hole is likely to be an inverted cone, that is, the aperture close to the hole mouth is large, and the aperture away from the hole mouth is small. The center hole of the valve sleeve needs to be a positive cone, that is, the aperture close to the hole mouth is small, and the aperture away from the hole mouth is large, resulting in greater difficulty in processing the center hole of the control valve sleeve and lower work efficiency. Utility Model Content
[0004] In view of the deficiencies in the prior art, the present invention provides a split control valve sleeve to solve the existing problems raised in the above background technology.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a split control valve sleeve, comprising a through-hole valve sleeve, a gasket, a valve plate, a first locating pin and a second locating pin, wherein the through-hole valve sleeve, the gasket and the valve plate are connected by the first locating pin and the second locating pin, a center hole is provided in the middle of the through-hole valve sleeve, a first side hole is provided in the interior of the through-hole valve sleeve, a second side hole is provided in the interior of the gasket, an oil inlet hole and an oil outlet hole are provided in the interior of the valve plate, a first through-hole is provided in the middle of the interior of the gasket, and a second through-hole is provided in the middle of the interior of the valve plate.
[0006] Preferably, the gasket is arranged on the top of the through-hole valve sleeve, and the valve plate is arranged on the top of the gasket.
[0007] Preferably, the first positioning pin and the second positioning pin are arranged on both sides of the central hole, and the outer surfaces of the first positioning pin and the second positioning pin pass through the valve plate and the gasket and extend to the interior of the through-hole valve sleeve.
[0008] Preferably, the interior of the first side hole is connected to the interior of the second side hole, and the interior of the second side hole is connected to the interior of the oil inlet hole.
[0009] Preferably, the interior of the oil inlet hole is communicated with the interior of the second through hole, and the interior of the second through hole is communicated with the interior of the oil outlet hole.
[0010] Preferably, the first through hole, the second through hole and the central hole are arranged on the same central axis, and the interior of the central hole is connected with the interior of the second through hole through the first through hole.
[0011] Beneficial effects
[0012] The utility model provides a split-type control valve sleeve. It has the following beneficial effects:
[0013] The split control valve sleeve is fastened to the valve plate by the cooperation among the through-hole valve sleeve, the gasket, the valve plate, the first locating pin and the second locating pin, and cooperates with the gasket to achieve a good sealing effect. In addition, by setting the center hole in the through-hole valve sleeve as a through hole, the center hole grinding overtravel can be increased, the difficulty of processing the center hole of the control valve sleeve is reduced, and the grinding accuracy and efficiency of the center hole of the control valve sleeve are improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall planar structure of the utility model;
[0015] Figure 2 It is a schematic side cross-sectional structural diagram of the utility model as a whole;
[0016] Figure 3 It is a schematic diagram of the overall structure of the utility model from a top view.
[0017] In the figure: 1, through-hole valve sleeve; 2, gasket; 3, valve plate; 4, first positioning pin; 5, second positioning pin; 6, first side hole; 7, second side hole; 8, oil inlet hole; 9, oil outlet hole; 10, center hole; 11, first through hole; 12, second through hole. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] Embodiment 1:
[0020] like Figure 1-3As shown, the utility model provides a split control valve sleeve, including a through-hole valve sleeve 1, a gasket 2, a valve plate 3, a first locating pin 4 and a second locating pin 5. The through-hole valve sleeve 1, the gasket 2 and the valve plate 3 are connected by the first locating pin 4 and the second locating pin 5. A center hole 10 is opened in the middle of the through-hole valve sleeve 1, a first side hole 6 is opened in the interior of the through-hole valve sleeve 1, a second side hole 7 is opened in the interior of the gasket 2, an oil inlet hole 8 and an oil outlet hole 9 are opened in the interior of the valve plate 3, a first through hole 11 is opened in the middle of the interior of the gasket 2, and a second through hole 12 is opened in the middle of the interior of the valve plate 3.
[0021] Specifically, the gasket 2 is arranged on the top of the through-hole valve sleeve 1 , and the valve plate 3 is arranged on the top of the gasket 2 .
[0022] Specifically, the first positioning pin 4 and the second positioning pin 5 are arranged on both sides of the central hole 10 , and the outer surfaces of the first positioning pin 4 and the second positioning pin 5 pass through the valve plate 3 and the gasket 2 and extend to the interior of the through-hole valve sleeve 1 .
[0023] Specifically, the interior of the first side hole 6 is communicated with the interior of the second side hole 7 , and the interior of the second side hole 7 is communicated with the interior of the oil inlet hole 8 .
[0024] Specifically, the interior of the oil inlet hole 8 is communicated with the interior of the second through hole 12 , and the interior of the second through hole 12 is communicated with the interior of the oil outlet hole 9 .
[0025] Specifically, the first through hole 11 and the second through hole 12 are arranged on the same central axis as the central hole 10 , and the interior of the central hole 10 is connected with the interior of the second through hole 12 through the first through hole 11 .
[0026] The working principles and beneficial effects of the above embodiments.
[0027] During use, the through-hole valve sleeve 1 is combined with the valve plate 3 through the first locating pin 4, the second locating pin 5 and the gasket 2. The gasket 2 is located between the through-hole valve sleeve 1 and the valve plate 3 to play a sealing role. The fuel reaches the oil inlet hole 8 of the valve plate 3 from the first side hole 6 in the through-hole valve sleeve 1 and the second side hole 7 in the gasket 2, and comes to the control cavity formed by the middle hole 10, the first through hole 11 and the second through hole 12, and then flows out to the oil outlet hole 9 of the valve plate 3. By processing the middle hole 10 into a through hole, the grinding overrun of the middle hole 10 is increased, thereby improving the processing efficiency.
[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.
[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A split control valve sleeve, comprising a through-hole valve sleeve (1), a gasket (2), a valve plate (3), a first positioning pin (4) and a second positioning pin (5), characterized in that: The through-hole valve sleeve (1), the gasket (2) and the valve plate (3) are connected by a first positioning pin (4) and a second positioning pin (5); a center hole (10) is provided in the middle of the through-hole valve sleeve (1); a first side hole (6) is provided in the inside of the through-hole valve sleeve (1); a second side hole (7) is provided in the inside of the gasket (2); an oil inlet hole (8) and an oil outlet hole (9) are provided in the inside of the valve plate (3); a first through-hole (11) is provided in the middle of the inside of the gasket (2); and a second through-hole (12) is provided in the middle of the inside of the valve plate (3).
2. A split control valve sleeve according to claim 1, characterized in that: The gasket (2) is arranged on the top of the through-hole valve sleeve (1), and the valve plate (3) is arranged on the top of the gasket (2).
3. The split control valve sleeve according to claim 1, characterized in that: The first positioning pin (4) and the second positioning pin (5) are arranged on both sides of the central hole (10), and the outer surfaces of the first positioning pin (4) and the second positioning pin (5) pass through the valve plate (3) and the gasket (2) and extend to the interior of the through-hole valve sleeve (1).
4. The split control valve sleeve according to claim 1, characterized in that: The interior of the first side hole (6) is communicated with the interior of the second side hole (7), and the interior of the second side hole (7) is communicated with the interior of the oil inlet hole (8).
5. The split control valve sleeve according to claim 1, characterized in that: The interior of the oil inlet hole (8) is communicated with the interior of the second through hole (12), and the interior of the second through hole (12) is communicated with the interior of the oil outlet hole (9).
6. The split control valve sleeve according to claim 1, characterized in that: The first through hole (11) and the second through hole (12) are arranged on the same central axis as the central hole (10), and the interior of the central hole (10) is connected to the interior of the second through hole (12) through the first through hole (11).