Double-seal grease injection valve

Abstract

The utility model relates to the technical field of grease injection valves, and discloses a double-seal grease injection valve which comprises a valve body, a valve bonnet and a grease injection hole. A bonnet is clamped and fixed to the end of one side of the valve body, and a grease injection hole is formed in the valve body. Comprising a telescopic assembly, an elastic assembly and a buffer assembly, the telescopic assembly is arranged in the valve body, the elastic assembly is arranged at the end of the telescopic assembly, and the buffer assembly is arranged on the elastic assembly; through the arrangement of the telescopic assembly, the elastic assembly and the buffering assembly, the problem that an existing grease injection valve sealing assembly is insufficient in buffering is effectively solved, a rod piece in the telescopic assembly is matched with a spring and is in linkage with an elastic piece and a fixing protruding head in the elastic assembly, and the grease injection valve sealing assembly can flexibly adapt to pressure changes; the buffering cushion, the buffering rod and the buffering spring cooperatively exert force, instant fluctuation and impact of pressure can be quickly and effectively relieved, a sealing piece is prevented from being damaged due to impact of external force, the safety and reliability of the grease injection valve are remarkably improved, and the service life of the grease injection valve is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to grease injection valve technical field, concretely is a kind of double-seal grease injection valve. BACKGROUND

[0002] The patent document with the existing announcement number CN116293371A discloses a high-pressure double-acting sealing grease injection valve, comprising a valve body, a valve core, a steel ball, a spring, a pressure relief rod, an open blocking ring and a valve cap, a secondary thread is arranged on the valve body and threadedly connected with the valve cap, a groove is further arranged on the valve body for installing the open blocking ring to limit the axial displacement of the valve cap, the pressure relief rod is arranged on the valve cap, the diameter of the pressure relief rod is smaller than the hole diameter of the second grease injection hole, and the pressure relief rod is integrally connected with the valve cap through threads, the valve body is provided with a valve core cavity, the valve core is riveted in the valve core cavity, a sealing groove is further arranged on the outer circle of the valve core for accommodating a sealing ring, the sealing ring enables the valve core and the valve body to form radial sealing, the steel ball is arranged in the tapered hole cavity of the valve body and forms a contact sealing fit with the tapered surface of the tapered hole cavity under the action of the spring force and internal pressure, the sealing ring is arranged on the outer circle of the valve core, the valve core is tightly attached to the sealing surface of the equipment by means of the increased internal pressure, thereby increasing a sealing pressure on the basis of the thread pretightening force, ensuring that the thread connection does not loosen in the case of equipment vibration or long-term use, and improving the safety and reliability of the grease injection valve, and the pressure relief rod is arranged on the valve cap, so that the internal pressure of the grease injection valve can be safely and conveniently released by rotating the valve cap, ensuring the safety and convenience of the grease injection valve pressure relief operation.

[0003] However, the above-mentioned scheme and the prior art have some deficiencies in the arrangement of the sealing assembly in the buffer assembly in actual application, when the pressure fluctuates or impacts instantaneously during the grease injection process, the existing sealing structure cannot effectively alleviate such external force, which may easily affect the sealing element, and therefore, improvement and optimization can be made.

[0004] Therefore, the utility model provides a double-seal grease injection valve to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a double-seal grease injection valve to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a double-seal grease injection valve, comprising a valve body, a valve cap and a grease injection hole, the valve cap is clamped and fixed to one side end of the valve body, and the grease injection hole is arranged on the valve body.

[0007] It is characterized by comprising a telescopic assembly, an elastic assembly and a buffer assembly, the telescopic assembly is arranged inside the valve body, the elastic assembly is arranged at the end of the telescopic assembly, and the buffer assembly is arranged on the elastic assembly.

[0008] Preferably, the rod in the telescopic assembly is fixedly arranged in the valve body, and a spring is fixedly arranged outside the rod in a matched manner.

[0009] Preferably, the elastic sheet in the elastic assembly is arranged on the rod, and a fixed lug is arranged at the top end of the elastic sheet and fixedly arranged at the bottom end of the rod.

[0010] Preferably, a steel ball is fixedly arranged on the rod in the elastic assembly, the steel ball is matched with a clamping port, and a pressure relief rod is arranged in the clamping port.

[0011] Preferably, the bottom end of the elastic sheet is fixedly connected with the buffer pad in the buffer assembly, and the buffer pad is tightly attached to the steel ball.

[0012] Preferably, a buffer rod is arranged in the buffer pad in the buffer assembly, and a buffer spring is arranged outside the buffer rod in a matched manner.

[0013] Compared with the prior art, the beneficial effects of the utility model are that: through the arrangement of the telescopic assembly, the elastic assembly and the buffer assembly, the problem of insufficient buffering of the existing grease injection valve sealing assembly is effectively solved, the rod in the telescopic assembly cooperates with the spring, the elastic sheet and the fixed lug in the elastic assembly are linked, pressure changes can be flexibly adapted, the buffer pad, the buffer rod and the buffer spring in the buffer assembly synergistically act, the instantaneous fluctuation and impact of pressure can be quickly and effectively relieved, the sealing element is prevented from being damaged due to external impact, the safety and reliability of the grease injection valve are significantly improved, and the service life thereof is greatly prolonged. BRIEF DESCRIPTION OF DRAWINGS

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

[0015] Figure 2 It is a telescopic assembly structure schematic view of the utility model;

[0016] Figure 3 It is an elastic assembly structure schematic view of the utility model;

[0017] Figure 4 It is a buffer assembly internal structure schematic view of the utility model.

[0018] In the drawing: valve body 1, valve cap 2, grease injection hole 3, telescopic assembly 4, elastic assembly 5, buffer assembly 6, rod 401, spring 402, elastic sheet 501, fixed lug 502, steel ball 503, clamping port 504, pressure relief rod 505, buffer pad 601, buffer rod 602, buffer spring 603. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme of the utility model carry on clear, complete description, and the advantage is more clear and distinct, the following combining with the drawings to the utility model embodiment carries on further detailed description, should understand, the specific embodiment described here is a part of the embodiment of the utility model, rather than all the embodiments, only to explain the embodiment of the utility model, and not for limiting the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor, belong to the scope of the utility model protection, the following will be clear, complete description of the technical scheme in the embodiment of the utility model.

[0020] Embodiment one: please refer to Figures 1 to 2 A double-sealing grease injection valve, comprising a valve body 1, a valve cap 2, a grease injection hole 3;The valve cap 2 is clamped and fixed on one side end of the valve body 1, and the grease injection hole 3 is arranged on the valve body 1;It comprises a telescopic assembly 4, an elastic assembly 5, a buffer assembly 6, the telescopic assembly 4 is arranged in the valve body 1, the elastic assembly 5 is arranged at the end of the telescopic assembly 4, and the buffer assembly 6 is arranged on the elastic assembly 5.

[0021] The rod 401 in the telescopic assembly 4 is fixedly arranged in the valve body 1, the spring 402 is fixedly arranged in the valve body 1 outside the rod 401, and the spring 402 is fixedly arranged in the valve body 1 outside the rod 401.

[0022] When using, when the grease injection operation is carried out, the grease enters the valve body 1 from the grease injection hole 3, the telescopic assembly 4 starts to work, the rod 401 is stably fixed in the valve body 1, the spring 402 is sleeved outside the rod 401, and the spring 402 is stretched and contracted with the change of the grease injection pressure, if the pressure increases, the spring 402 is compressed;The spring 402 returns to the original state when the pressure decreases, the telescopic process can preliminarily buffer and adapt to the change of the grease injection pressure, ensure the relative stability of the pressure in the grease injection process, and lay a foundation for the cooperative work of the elastic assembly 5 and the buffer assembly 6.

[0023] Embodiment two: on the basis of embodiment one, please refer to Figures 2 to 3 The elastic sheet 501 in the elastic assembly 5 is arranged on the rod 401, the fixed lug 502 is arranged at the top end of the elastic sheet 501, and the fixed lug 502 is fixedly arranged at the bottom end of the rod 401.

[0024] The steel ball 503 is fixedly arranged on the rod 401 in the elastic assembly 5, the steel ball 503 is matched with the clamping port 504, and the pressure relief rod 505 is arranged in the clamping port 504.

[0025] In use, the elastic component 5 starts to work in the grease injection process. The elastic sheet 501 is arranged on the rod 401, and the fixed lug 502 at the top end is fixed at the bottom end of the rod 401, so that the elastic sheet 501 works stably. At the same time, the steel ball 503 on the rod 401 is clamped with the clamping port 504, and the pressure relief rod 505 in the clamping port 504 can play a certain pressure relief role when the pressure is too high. When the grease injection pressure fluctuates, the elastic sheet 501 will produce elastic deformation, and the clamping of the steel ball 503 and the clamping port 504 further adapts and adjusts the pressure, so as to ensure the stable progress of the grease injection process.

[0026] Example three: on the basis of example two, please refer to Figures 3 to 4 The one side end of the buffer pad 601 in the buffer component 6 is fixedly connected to the bottom end of the elastic sheet 501, and the buffer pad 601 is tightly attached to the steel ball 503.

[0027] The buffer rod 602 is arranged in the buffer pad 601 in the buffer component 6, and the buffer spring 603 is externally and adaptively sleeved on the buffer rod 602.

[0028] In use, the buffer component 6 plays a key buffering role. The one side of the buffer pad 601 is connected to the bottom end of the elastic sheet 501 and is tightly attached to the steel ball 503. The buffer rod 602 in the buffer pad 601 is sleeved with the buffer spring 603. When the grease injection pressure fluctuates or is impacted instantaneously, the buffer pad 601 first bears the pressure, and then the buffer spring 603 is compressed or stretched under the cooperation of the buffer rod 602, so as to absorb and disperse the pressure, avoid the direct impact of the pressure on the sealing element, effectively protect the sealing element, and improve the safety and reliability of the grease injection valve.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A double-seal grease injection valve, comprising a valve body (1), a valve cap (2), and a grease injection hole (3); one side end of the valve body (1) is clamped and fixed with the valve cap (2), and the valve body (1) is provided with the grease injection hole (3), characterized in that: Including telescopic assembly (4), elastic assembly (5), buffer assembly (6), the telescopic assembly (4) is arranged inside the valve body (1), the elastic assembly (5) is arranged at the end of telescopic assembly (4), the buffer assembly (6) is arranged on elastic assembly (5).

2. The dual seal lubrication injection valve of claim 1, wherein: The rod (401) in the telescopic assembly (4) is fixedly arranged in the valve body (1), the spring (402) is fixedly arranged in the valve body (1) on the outer side of the rod (401), and the spring (402) is fixedly arranged in the valve body (1) on the outer side of the rod (401).

3. The dual seal lubrication injection valve of claim 1, wherein: The elastic sheet (501) in the elastic assembly (5) is arranged on the rod (401), the fixed lug (502) is arranged on the top end of the elastic sheet (501), and the fixed lug (502) is fixedly arranged on the bottom end of the rod (401).

4. The dual seal lubrication injection valve of claim 2, wherein: The steel ball (503) is fixedly arranged on the rod (401) in the elastic assembly (5), the steel ball (503) is matched with the clamping port (504), and the pressure relief rod (505) is arranged in the clamping port (504).

5. The dual seal lubrication injection valve of claim 2, wherein: The buffer pad (601) in the buffer assembly (6) is fixedly connected to the bottom end of the elastic sheet (501), and the buffer pad (601) is tightly attached to the steel ball (503).

6. The dual seal lubrication injection valve of claim 1, wherein: The buffer rod (602) is arranged in the buffer pad (601) in the buffer assembly (6), and the buffer spring (603) is matched with the buffer rod (602) outside.

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