Manual hydraulic valve with oil contamination prevention function

Abstract

The utility model relates to the field of manual hydraulic valves, and discloses a manual hydraulic valve capable of preventing oil contamination, which comprises a manual hydraulic valve main body, a manual hydraulic valve handle is mounted on the manual hydraulic valve main body, a handheld grip is fixedly mounted at the upper end of the manual hydraulic valve handle, and a reset structure is sleeved on the manual hydraulic valve handle. The reset structure is composed of a fixed base ring, a reset spring, a mounting base ring and resistance reduction balls, the reset spring is fixedly mounted at the upper end of the fixed base ring, the mounting base ring is fixedly mounted at the upper end of the reset spring, and the multiple resistance reduction balls are rotationally mounted in the mounting base ring; the hand-operated hydraulic valve handle and the handheld grip are movably sleeved with the oil-stain-resistant assembly, the reset structure and the oil-stain-resistant assembly are arranged on the hand-operated hydraulic valve handle and the handheld grip, and under the elastic acting force of the reset structure, the oil-stain-resistant assembly can be arranged on the handheld grip in a sleeving mode, so that a large amount of oil stains are prevented from being attached to the handheld grip when the hand-operated hydraulic valve handle and the handheld grip are not used.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of manual hydraulic valve, in particular to a manual hydraulic valve with oil dirtproof. BACKGROUND

[0002] Manual hydraulic valve is a kind of valve that controls the flow direction, pressure and flow of hydraulic system oil by manual operation. It is usually composed of handle, valve core and valve seat, etc. The inclination of handle controls the movement of valve core, so as to change the gap between valve core and valve seat, realize the on-off, pressure regulation and flow control of fluid. Manual hydraulic valve has the characteristics of simple operation and reliable work, and does not need power drive, which is suitable for various hydraulic systems that need manual control. At the same time, the disadvantage of manual hydraulic valve is that the degree of automation is not high, and manual operation is needed, but in some specific occasions, its stability and reliability are irreplaceable for other types of hydraulic valves.

[0003] In the existing patent application No. CN201720946186.9, a corrosion-resistant labor-saving manual hydraulic valve is proposed. Since the operating handle of the manual hydraulic valve is not provided with an oil dirtproof component, a large amount of oil dirt is easily attached to the operating handle during use. The existence of oil dirt brings certain inconvenience to the operator in controlling the operating handle, i.e. the oil dirt may make the surface of the handle slippery, reduce the gripping force and control accuracy of the operator, and thus affect the precise adjustment and operation flexibility of the manual hydraulic valve. Therefore, the present application proposes a manual hydraulic valve with oil dirtproof. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a manual hydraulic valve with oil dirtproof, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A manual hydraulic valve with oil dirtproof, comprising a manual hydraulic valve body, a manual hydraulic valve handle installed on the manual hydraulic valve body, a hand grip fixedly installed at the upper end of the manual hydraulic valve handle, a reset structure sleeved on the manual hydraulic valve handle, the reset structure being composed of a fixed base ring, a reset spring, an installation base ring and a drag-reducing ball, the reset spring being fixedly installed at the upper end of the fixed base ring, the installation base ring being fixedly installed at the upper end of the reset spring, the drag-reducing ball being rotatably installed in the installation base ring, an oil dirtproof component movably sleeved on the manual hydraulic valve handle and the hand grip, and the oil dirtproof component being located above the reset structure, the oil dirtproof component being composed of a grip sleeve, an internally threaded sleeve and a rotating collar, the internally threaded sleeve being fixedly installed at the lower end of the grip sleeve, and the rotating collar being fixedly sleeved on the grip sleeve.

[0007] Preferably, the lower part of the outer wall of the manual hydraulic valve handle is fixedly provided with a fixed thread.

[0008] Preferably, the fixed base ring of the reset structure is sleeved on the manual hydraulic valve handle, and the fixed base ring is located below the fixed thread.

[0009] Preferably, the reset spring of the reset structure is movably sleeved on the manual hydraulic valve handle, and the mounting base ring is also movably sleeved on the manual hydraulic valve handle.

[0010] Preferably, the upper end of the mounting base ring of the reset structure is provided with a plurality of spherical grooves, and the drag-reducing ball is rotatably mounted in the spherical grooves.

[0011] Preferably, the handle sleeve of the oil stain prevention assembly is movably sleeved on the manual hydraulic valve handle and the handheld handle, the lower end of the handle sleeve is in contact with the drag-reducing ball of the reset structure, the rotating sleeve ring is fixedly sleeved on the upper part of the handle sleeve, the upper end of the rotating sleeve ring is flush with the upper end of the handle sleeve, the inner thread sleeve is movably sleeved on the manual hydraulic valve handle, and the inner thread sleeve is located in the reset spring and the mounting base ring.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] By setting the reset structure and the oil stain prevention assembly on the manual hydraulic valve handle and the handheld handle, under the elastic force of the reset structure, the oil stain prevention assembly can be sleeved on the handheld handle, so that the problem that a large amount of oil stains is attached to the handheld handle when the handheld handle is not used, oil stains are attached to the surface of the handheld handle, the surface of the handheld handle becomes slippery, the gripping force and the control precision of the operator are reduced, and the accurate adjustment and the operation flexibility of the manual hydraulic valve are affected can be avoided; the existence of the mounting base ring and the drag-reducing ball on the reset structure can reduce the resistance that the oil stain prevention assembly suffers when being rotatably mounted on the fixed thread, so that the oil stain prevention assembly can be easily rotatably mounted on the fixed thread. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the utility model;

[0015] Figure 2 It is a position relation structure schematic view of the manual hydraulic valve body, the manual hydraulic valve handle, the handheld handle and the fixed thread of the utility model;

[0016] Figure 3 It is a split view of the reset structure of the utility model;

[0017] Figure 4 It is a sectional view of the oil stain prevention assembly of the utility model.

[0018] In the figure: 1, the manual hydraulic valve body; 2, the manual hydraulic valve handle; 3, the hand grip; 4, the reset structure; 5, the oil stain prevention assembly; 6, the fixing screw; 7, the fixing base ring; 8, the reset spring; 9, the mounting base ring; 10, the spherical groove; 11, the drag-reducing ball; 12, the grip sleeve; 13, the internally threaded sleeve; 14, the rotating collar. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown in the figure, an oil stain prevention manual hydraulic valve comprises a manual hydraulic valve body 1, a manual hydraulic valve handle 2 is installed on the manual hydraulic valve body 1, a hand grip 3 is fixedly installed on the upper end of the manual hydraulic valve handle 2, a reset structure 4 is sleeved on the manual hydraulic valve handle 2, the reset structure 4 is composed of a fixing base ring 7, a reset spring 8, a mounting base ring 9 and drag-reducing balls 11, the reset spring 8 is fixedly installed on the upper end of the fixing base ring 7, the mounting base ring 9 is fixedly installed on the upper end of the reset spring 8, the drag-reducing balls 11 are rotatably installed in the mounting base ring 9, an oil stain prevention assembly 5 is movably sleeved on the manual hydraulic valve handle 2 and the hand grip 3, and the oil stain prevention assembly 5 is located above the reset structure 4, the oil stain prevention assembly 5 is composed of a grip sleeve 12, an internally threaded sleeve 13 and a rotating collar 14, the internally threaded sleeve 13 is fixedly installed on the lower end of the grip sleeve 12, and the rotating collar 14 is fixedly sleeved on the grip sleeve 12, when it is needed to control the manual hydraulic valve handle 2 through the hand grip 3, the oil stain prevention assembly 5 is first pushed downward, at this time, the reset spring 8 on the reset structure 4 is compressed and deformed, then the hand grip 3 can be held to operate the manual hydraulic valve handle 2; when the hand grip 3 is released, the elasticity of the reset spring 8 pushes the mounting base ring 9 and the drag-reducing balls 11 to reset upward, and the mounting base ring 9 and the drag-reducing balls 11 push the oil stain prevention assembly 5 to reset upward, finally the oil stain prevention assembly 5 automatically rebounds to the initial position to cover the surface of the hand grip 3, preventing oil stains from adhering.

[0021] Finally, by setting the reset structure 4 and the oil stain prevention assembly 5 on the manual hydraulic valve handle 2 and the hand-held handle 3, the oil stain prevention assembly 5 can be sleeved on the hand-held handle 3 under the elastic force of the reset structure 4, so that the problem of a large amount of oil stains adhering to the hand-held handle 3 when not in use is avoided, and the problem of oil stains adhering to the surface of the hand-held handle 3, making the surface of the hand-held handle 3 slippery, reducing the gripping force and control accuracy of the operator, and further affecting the accurate adjustment and operation flexibility of the manual hydraulic valve is avoided. The existence of the base ring 9 and the resistance-reducing ball 11 on the reset structure 4 can reduce the resistance when the oil stain prevention assembly 5 is screwed onto the fixed thread 6, so that the oil stain prevention assembly 5 can be easily screwed onto the fixed thread 6.

[0022] Further, the outer wall of the manual hydraulic valve handle 2 is fixedly provided with a fixed thread 6 at the lower part, the fixed base ring 7 on the reset structure 4 is fixedly sleeved on the manual hydraulic valve handle 2, and the fixed base ring 7 is located below the fixed thread 6 at the same time, the reset spring 8 on the reset structure 4 is movably sleeved on the manual hydraulic valve handle 2, and the mounting base ring 9 is also movably sleeved on the manual hydraulic valve handle 2, the upper end of the mounting base ring 9 on the reset structure 4 is provided with a plurality of spherical grooves 10, the resistance-reducing ball 11 is rotatably installed in the spherical groove 10 at the upper end of the mounting base ring 9, the handle sleeve 12 on the oil stain prevention assembly 5 is movably sleeved on the manual hydraulic valve handle 2 and the hand-held handle 3, the lower end of the handle sleeve 12 is in contact with the resistance-reducing ball 11 on the reset structure 4, the rotating sleeve 14 is fixedly sleeved on the upper part of the handle sleeve 12, and the upper end of the rotating sleeve 14 is flush with the upper end of the handle sleeve 12, the internal thread sleeve 13 is movably sleeved on the manual hydraulic valve handle 2, and the internal thread sleeve 13 is located in the reset spring 8 and the mounting base ring 9 at the same time. According to the needs of operating the manual hydraulic valve handle 2 and the hand-held handle 3, if necessary, the oil stain prevention assembly 5 can be fixed at the fixed thread 6, and the method is that the oil stain prevention assembly 5 is first pushed downward, the internal thread sleeve 13 on the oil stain prevention assembly 5 is in contact with the fixed thread 6, then the oil stain prevention assembly 5 is rotated, so that the internal thread sleeve 13 is screwed onto the fixed thread 6. During the rotating process, the resistance-reducing ball 11 on the reset structure 4 is in contact with the lower end of the handle sleeve 12, the rolling characteristics of the resistance-reducing ball 11 are used to reduce the friction resistance, and the rotating process is smooth.

[0023] The above only describes the preferred embodiments of the present application, and is not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. The protection scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of manual hydraulic valve with oil stain prevention, comprising manual hydraulic valve body (1), manual hydraulic valve handle (2) is installed on the manual hydraulic valve body (1), the upper end of the manual hydraulic valve handle (2) is fixedly installed with hand grip (3), it is characterized by: The manual hydraulic valve handle (2) is sleeved with a reset structure (4), the reset structure (4) is composed of a fixed base ring (7), a reset spring (8), a mounting base ring (9) and a drag-reducing ball (11), the reset spring (8) is fixedly installed at the upper end of the fixed base ring (7), the mounting base ring (9) is fixedly installed at the upper end of the reset spring (8), the drag-reducing ball (11) is rotatably installed in the mounting base ring (9), the manual hydraulic valve handle (2) and the handheld handle (3) are movably sleeved with an oil-proof assembly (5), and the oil-proof assembly (5) is located above the reset structure (4), the oil-proof assembly (5) is composed of a handle sleeve (12), an internally-threaded sleeve (13) and a rotating sleeve ring (14), the internally-threaded sleeve (13) is fixedly installed at the lower end of the handle sleeve (12), and the rotating sleeve ring (14) is fixedly sleeved on the handle sleeve (12).

2. A manually operated hydraulic valve with oil contamination protection according to claim 1, characterized in that: The outer wall of the manual hydraulic valve handle (2) is movably sleeved with a fixed thread (6).

3. A manually operated hydraulic valve with oil contamination protection according to claim 2, characterized in that: The fixed base ring (7) of the reset structure (4) is fixedly sleeved on the manual hydraulic valve handle (2), and the fixed base ring (7) is located below the fixed thread (6).

4. A manually operated hydraulic valve having oil contamination protection according to claim 3, wherein: The reset spring (8) of the reset structure (4) is movably sleeved on the manual hydraulic valve handle (2), and the mounting base ring (9) is also movably sleeved on the manual hydraulic valve handle (2).

5. A manually operated hydraulic valve having oil contamination protection according to claim 4, wherein: The upper end of the mounting base ring (9) of the reset structure (4) is provided with a plurality of spherical grooves (10), and the drag-reducing ball (11) is rotatably installed in the spherical groove (10) at the upper end of the mounting base ring (9).

6. A manually operated hydraulic valve having oil contamination protection according to claim 5 wherein: The handle sleeve (12) of the oil-proof assembly (5) is movably sleeved on the manual hydraulic valve handle (2) and the handheld handle (3), the lower end of the handle sleeve (12) is in contact with the drag-reducing ball (11) of the reset structure (4), the rotating sleeve ring (14) is fixedly sleeved on the upper portion of the handle sleeve (12), the upper end of the rotating sleeve ring (14) is flush with the upper end of the handle sleeve (12), and the internally-threaded sleeve (13) is movably sleeved on the manual hydraulic valve handle (2), and the internally-threaded sleeve (13) is located in the reset spring (8) and the mounting base ring (9).

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