阅读说明：本技术 一种抗冲击性能强的氮化硅柱塞 (Silicon nitride plunger with strong impact resistance ) 是由 陈巨喜 曾小锋 于 2019-11-25 设计创作，主要内容包括：本发明提供一种抗冲击性能强的氮化硅柱塞。所述抗冲击性能强的氮化硅柱塞包括：缸体；活动柱,所述活动柱的两侧滑动连接于所述缸体内壁的两侧；缓冲装置,所述缓冲装置位于活动柱的底端,所述缓冲装置包括缓冲组件。本发明提供的抗冲击性能强的氮化硅柱塞具有很强的抗冲击性,使得活动柱在进行往复运动时,提高氮化硅柱塞在往复运动时的稳定性,同时将氮化硅柱塞往复运动时的冲击力进行缓冲减压,避免活动柱在往复运动时,巨大的冲击力造成内部零件的损坏,并且通过防护套以及密封层能够防止活动柱在往复运动时,防止空气进入,加大运动阻力,导致活动柱在往复运动时,发生左右摆动,影响活动柱的正常工作。(The invention provides a silicon nitride plunger with strong impact resistance. The silicon nitride plunger with strong impact resistance comprises: a cylinder body; the two sides of the movable column are connected to the two sides of the inner wall of the cylinder body in a sliding manner; the buffer device is positioned at the bottom end of the movable column and comprises a buffer component. The silicon nitride plunger with strong impact resistance provided by the invention has strong impact resistance, so that the stability of the silicon nitride plunger in reciprocating motion is improved when the movable column reciprocates, meanwhile, the impact force of the silicon nitride plunger in reciprocating motion is buffered and decompressed, the damage of internal parts caused by huge impact force is avoided when the movable column reciprocates, and air is prevented from entering and the motion resistance is increased by the protective sleeve and the sealing layer when the movable column reciprocates, so that the movable column swings left and right to influence the normal work of the movable column.)

1. A silicon nitride plunger with strong impact resistance is characterized by comprising:

a cylinder body;

the two sides of the movable column are connected to the two sides of the inner wall of the cylinder body in a sliding manner;

the buffer device is positioned at the bottom end of the movable column and comprises a buffer assembly, a sealing layer is arranged inside the buffer assembly, a wear-resistant layer is arranged inside the sealing layer, a buffer ring is arranged inside the wear-resistant layer, a movable groove is arranged inside the buffer ring, and elastic rubber balls are arranged inside the movable groove;

and the top ends of the two damping springs are arranged on two sides of the bottom of the buffer component.

2. The silicon nitride plunger with high impact resistance as claimed in claim 1, wherein the two sides of the movable column are provided with protrusions, the two sides of the inner wall of the cylinder body are provided with elastic extrusion blocks, and the protrusions contact with one side of the elastic extrusion blocks.

3. The silicon nitride plunger with high impact resistance according to claim 2, wherein two sides of the top of the cylinder body are provided with two protecting sleeves, and one opposite sides of the two protecting sleeves are in contact with two sides of the movable column.

4. A silicon nitride plunger with strong impact resistance is characterized by further comprising: the plunger piston comprises a plunger piston body and a protection box; sliding plates are connected between two sides of the inner wall of the protection box in a sliding mode, operating rods are fixedly connected to two sides of the top of each sliding plate, and the top ends of the operating rods penetrate through the protection box and extend to the outside of the protection box.

5. The silicon nitride plunger with high impact resistance as claimed in claim 4, wherein folding legs are fixedly connected to both sides of the bottom of the inner wall of the protection box, and connecting plates are fixedly connected to the tops of the two folding legs.

6. The silicon nitride plunger with high impact resistance as claimed in claim 5, wherein both sides of the connecting plate are fixed to both sides of the inner wall of the protection box.

7. The silicon nitride plunger with high impact resistance according to claim 6, wherein the top of the connecting plate and the bottom of the sliding plate are both fixedly connected with clamping plates, the tops of the clamping plates are both provided with grooves, the insides of the grooves are in contact with the plunger body, and the connecting plates are both provided with extension springs at both sides of the tops and at both sides of the clamping plates.

Technical Field

The invention relates to the field of silicon nitride plungers with strong impact resistance, in particular to a silicon nitride plunger with strong impact resistance.

Background

Silicon nitride is an important structural ceramic material. It is a superhard matter, has lubricity and abrasion resistance, and is an atomic crystal; is resistant to oxidation at high temperature. It can resist cold and hot impact, and can be heated to above 1000 deg.C in air, and can be rapidly cooled and then rapidly heated, and can not be broken. Because of the excellent characteristics of silicon nitride ceramics, it is often used to manufacture mechanical components such as bearings, turbine blades, mechanical seal rings, permanent molds, etc. if the heated surface of the engine component is made of silicon nitride ceramics which is resistant to high temperature and difficult to transfer heat, the quality of the diesel engine can be improved, the fuel can be saved, and the thermal efficiency can be improved.

At present, the silicon carbide plunger is generally used for manufacturing mechanical components such as a bearing, a gas turbine blade, a mechanical sealing ring and a permanent mold, and has a large number of defects when in use.

Therefore, it is necessary to provide a silicon nitride plunger with strong impact resistance to solve the above technical problems.

Disclosure of Invention

The invention provides a silicon nitride plunger with strong impact resistance, which solves the problems that the impact resistance is poor, the left and right shaking is easy to occur and parts are damaged due to poor buffering and pressure reducing effects when the silicon nitride plunger reciprocates.

In order to solve the technical problem, the silicon nitride plunger with strong impact resistance provided by the invention comprises:

a cylinder body;

the two sides of the movable column are connected to the two sides of the inner wall of the cylinder body in a sliding manner;

the buffer device is positioned at the bottom end of the movable column and comprises a buffer assembly, a sealing layer is arranged inside the buffer assembly, a wear-resistant layer is arranged inside the sealing layer, a buffer ring is arranged inside the wear-resistant layer, a movable groove is arranged inside the buffer ring, and elastic rubber balls are arranged inside the movable groove;

the top ends of the two damping springs are arranged on two sides of the bottom of the buffer component;

the elastic rubber balls arranged in the movable groove can have good buffering effect when the movable column is extruded downwards, and the elastic rubber balls are mutually extruded to buffer the impact force generated by the extrusion of the movable column on the cylinder body, so that the impact resistance and the stability during reciprocating motion are improved;

the shock absorption spring can well buffer the impact force generated when the movable column is extruded downwards, so that the influence of large impact force on the reciprocating of the movable column and the influence of damage to internal parts on normal use are avoided;

through the sealing layer that sets up, improved the gas tightness of activity post when up-and-down motion, prevent the entering of air, increase the resistance, improved the gas tightness of activity post.

Preferably, the two sides of the movable column are provided with convex blocks, the two sides of the inner wall of the cylinder body are provided with elastic extrusion blocks, and the convex blocks are in contact with one side of the elastic extrusion blocks.

Preferably, the two sides of the top of the cylinder body are provided with protective sleeves, and the opposite sides of the two protective sleeves are in contact with the two sides of the movable column.

A silicon nitride plunger with strong impact resistance further comprises: the plunger piston comprises a plunger piston body and a protection box; sliding plates are connected between two sides of the inner wall of the protection box in a sliding mode, operating rods are fixedly connected to two sides of the top of each sliding plate, and the top ends of the operating rods penetrate through the protection box and extend to the outside of the protection box.

Preferably, the two sides of the bottom of the inner wall of the protection box are fixedly connected with folding frames, and the top of each folding frame is fixedly connected with a connecting plate.

Preferably, two sides of the connecting plate are fixed on two sides of the inner wall of the protection box.

Preferably, the top of the connecting plate and the bottom of the sliding plate are both fixedly connected with clamping plates, the tops of the clamping plates are both provided with grooves, the insides of the grooves are in contact with the plunger body, and the two sides of the tops of the connecting plates and the two sides of the clamping plates are both provided with extension springs.

Compared with the related art, the silicon nitride plunger with strong impact resistance provided by the invention has the following beneficial effects:

when the silicon carbide plunger moves, the movable column moves downwards to contact the protective sleeve and move downwards, and then enters the cylinder body to buffer elastic extrusion blocks arranged on two sides of the inner wall of the cylinder body, so that part of impact force is weakened and the downward movement is continued, and when the buffer device at the bottom end of the movable column contacts the contact pad, the buffer device can extrude and contract the damping spring to achieve the effect of buffering and pressure reduction;

when the buffer device extrudes and impacts the contact pad, the elastic rubber ball in the buffer ring can perform extrusion motion in the movable groove, and a good buffer effect is achieved when the elastic rubber ball contacts the bottom;

the device has very strong impact resistance, make the movable column when carrying out reciprocating motion, improve the stability of silicon nitride plunger when reciprocating motion, impact force when simultaneously with silicon nitride plunger reciprocating motion cushions the decompression, avoid the movable column when reciprocating motion, huge impact force causes the damage of internals, and can prevent the movable column when reciprocating motion through lag and sealing layer, prevent the air admission, increase the motion resistance, lead to the movable column when reciprocating motion, take place the horizontal hunting, influence the normal work of movable column.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of a silicon nitride plunger with high impact resistance according to the present invention;

FIG. 2 is a schematic view of the interior of the cushioning device;

FIG. 3 is a schematic structural diagram of a second embodiment of a silicon nitride plunger with high impact resistance according to the present invention;

fig. 4 is a schematic structural diagram of the groove in fig. 3.

Reference numbers in the figures: 1. cylinder body, 2, activity post, 3, buffer, 31, buffering subassembly, 32, sealing layer, 33, wearing layer, 34, buffering circle, 35, activity groove, 36, elasticity rubber ball, 4, damping spring, 5, lug, 6, elastic extrusion piece, 7, lag, 8, plunger body, 9, guard box, 10, sliding plate, 11, action bars, 12, folding leg, 13, connecting plate, 14, cardboard, 15, recess, 16, extension spring.

Detailed Description

First embodiment

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, fig. 1 is a schematic structural diagram of a silicon nitride plunger with high impact resistance according to a first embodiment of the present invention; FIG. 2 is a schematic view of the interior of the cushioning device; FIG. 3 is a schematic structural diagram of a silicon nitride plunger with high impact resistance according to a second embodiment of the present invention; fig. 4 is a schematic structural diagram of the groove in fig. 3. The silicon nitride plunger with strong impact resistance comprises:

a cylinder body 1;

the two sides of the movable column 2 are connected to the two sides of the inner wall of the cylinder body 1 in a sliding manner;

buffer 3, buffer 3 is located the bottom of activity post 2, buffer 3 is including buffering subassembly 31, the inside of buffering subassembly 31 is provided with sealing layer 32, the inside of sealing layer 32 is provided with wearing layer 33, the inside of wearing layer 33 is provided with buffering circle 34, the inside of buffering circle 34 is provided with movable groove 35, the inside of movable groove 35 all is provided with elastic rubber ball 36.

And the top ends of the two damping springs 4 are arranged at two sides of the bottom of the buffer component 31.

The two sides of the movable column 2 are both provided with a convex block 5, the two sides of the inner wall of the cylinder body 1 are both provided with an elastic extrusion block 6, and the convex blocks 5 are in contact with one side of the elastic extrusion block 6;

the elastic extrusion block 6 has certain elasticity and is made of soft material, and part of impact force is buffered through the reciprocating motion of the movable column 2, and the stability during the reciprocating motion is improved.

Protective sleeves 7 are arranged on two sides of the top of the cylinder body 1, and one opposite sides of the two protective sleeves 7 are in contact with two sides of the movable column 2;

the lag 7 can play the stability of activity post 2 when reciprocating motion, avoids under the influence of impact force, takes place to rock about, damages internals, influences the normal use of silicon nitride plunger.

The silicon nitride plunger with strong impact resistance provided by the invention has the following working principle:

when the silicon carbide plunger moves, the movable column 2 is used for performing piston movement on the cylinder body 1, so that parts inside an engine can move, when the silicon carbide plunger moves, in order to extrude the movable column 2, the movable column 2 moves downwards, then contacts the protective sleeve 7 and moves downwards, then enters the cylinder body 1 to buffer elastic extrusion blocks 6 arranged on two sides of the inner wall of the cylinder body 1, a part of impact force is weakened, and the downward movement is continued, when the buffer device 3 at the bottom end of the movable column 2 contacts the contact pad, the buffer spring 4 can be extruded and contracted, and the effect of buffering and pressure reduction is achieved;

when the cushion device 3 performs the extrusion impact on the contact pad, the elastic rubber ball 36 in the cushion ring 34 performs the extrusion motion in the movable groove 35, and when the elastic rubber ball contacts the bottom, the excellent cushion effect is achieved.

Compared with the related art, the silicon nitride plunger with strong impact resistance provided by the invention has the following beneficial effects:

when the buffer device 3 extrudes and impacts the contact pad, the elastic rubber ball 36 in the buffer ring 34 performs extrusion movement in the movable groove 35, and a good buffer effect is achieved when the elastic rubber ball contacts the bottom;

the device has very strong impact resistance, make the movable column when carrying out reciprocating motion, improve the stability of silicon nitride plunger when reciprocating motion, impact force when simultaneously with silicon nitride plunger reciprocating motion cushions the decompression, avoid the movable column when reciprocating motion, huge impact force causes the damage of internals, and can prevent the movable column when reciprocating motion through lag and sealing layer, prevent the air admission, increase the motion resistance, lead to the movable column when reciprocating motion, take place the horizontal hunting, influence the normal work of movable column.

Second embodiment

Based on the silicon nitride plunger with strong impact resistance provided by the first embodiment of the application, the second embodiment of the application provides another silicon nitride plunger with strong impact resistance. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the difference between the structural schematic diagram of the second embodiment based on a silicon nitride plunger with strong impact resistance provided by the second embodiment of the present application is that the structural schematic diagram of the second embodiment based on a silicon nitride plunger with strong impact resistance further includes:

the invention is further described with reference to the following figures and embodiments.

Referring to fig. 3 and fig. 4, fig. 3 is a schematic structural diagram of a silicon nitride plunger with strong impact resistance according to a second embodiment of the present invention; fig. 4 is a schematic structural diagram of the groove in fig. 3. A silicon nitride plunger with strong impact resistance further comprises: a plunger body 8 and a protection box 9; sliding plates 10 are connected between two sides of the inner wall of the protection box 9 in a sliding mode, operating rods 11 are fixedly connected to two sides of the top of each sliding plate 10, and the top ends of the operating rods 11 penetrate through the protection box 9 and extend to the outside of the protection box 9.

The equal fixedly connected with folding leg 12 in both sides of guard box 9 inner wall bottom, two the equal fixedly connected with connecting plate 13 in top of folding leg 12.

The two sides of the connecting plate 13 are fixed on the two sides of the inner wall of the protection box 9.

The top of the connecting plate 13 and the bottom of the sliding plate 10 are both fixedly connected with a clamping plate 14, the top of the clamping plate 14 is both provided with a groove 15, the inside of the groove 15 is in contact with the plunger body 8, and the two sides of the top of the connecting plate 13 and the two sides of the clamping plate 14 are both provided with extension springs 16.

Through the fixed clamp to plunger body 8 when transportation and use, prevent to appear dropping, and then damage plunger body 8, influence the use of plunger body 8, through pulling sliding plate 10, make the recess 15 of sliding plate 10 bottom fix the chucking to the surface of plunger body 8, and through extension spring 16's effect, make recess 15 groove on the sliding plate 10 carry out fixed clamp with plunger body 8 and press from both sides tightly, improve the stability when the transportation, and take when convenient using, further improvement guard box 9's practicality.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.