CN220248167U

CN220248167U - Split valve spring seat

Info

Publication number: CN220248167U
Application number: CN202321509017.0U
Authority: CN
Inventors: 舒学军
Original assignee: Ningbo Yuyao Shuchun Machinery Co ltd
Current assignee: Ningbo Yuyao Shuchun Machinery Co ltd
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2023-12-26
Anticipated expiration: 2033-06-14

Abstract

The utility model relates to the field of valve fittings, in particular to a split valve spring seat, which comprises a base, a boss, a locking ring and an inserting cylinder, wherein the boss is arranged below the base; the second supporting surface is arranged at the bottom of the boss, and the stability of the outer ring and the inner ring of the valve spring during working is protected through the first supporting surface and the second supporting surface. The locking ring is formed by dividing a complete conical part into two halves, a circular through hole is formed in the locking ring, an annular bulge is arranged in the circular through hole, the locking ring is arranged in a conical hole of the spring seat, the inner wall of the conical hole is in close contact with the outer conical surface of the locking ring, and the stability of the spring seat in the operation of the device is solved. The annular groove is formed in the insert cylinder, the insert cylinder is arranged at the circular through hole in the lock ring, the annular protrusion on the annular through hole of the lock ring is matched with the annular groove on the insert cylinder, and the stability of the lock ring in the working state is improved.

Description

Split valve spring seat

Technical Field

The utility model relates to the field of valve fittings, in particular to a split valve spring seat.

Background

The valve spring seat ensures that the valve is seated in time and tightly attached, prevents the valve from jumping when the engine vibrates, and damages the tightness of the valve. The installation pre-tightening force generated by pre-compression during the installation of the valve spring is used for overcoming the inertia force of the valve and the driving parts thereof in the closing process of the valve, eliminating the gap between the driving parts due to the action of the inertia force and realizing the function of the driving parts.

Increasing the natural frequency of vibration of the valve spring seeks to increase the stiffness of the valve spring, such as increasing the wire diameter or decreasing the coil diameter of the spring. This approach is simpler but increases power consumption and impact load between parts due to the high spring rate; two inner and outer springs with different diameters and opposite rotation directions are arranged on each valve by adopting a double-valve spring. Because the natural vibration frequencies of the two springs are different, when one spring resonates, the other spring can play a role in vibration reduction. The opposite rotation direction can prevent one spring from being clamped into the other spring when the other spring is broken, so that the good spring is clamped or damaged. In addition, when one spring breaks, the other spring can still keep the valve from falling into the cylinder;

when the spring with unequal pitches is used, one end with smaller pitches is gradually overlapped, the effective circle number is gradually reduced, and the natural frequency is gradually increased, so that resonance becomes impossible; a single spring with equal screw pitch is adopted, and a damping friction plate in interference fit is added on the inner ring of the single spring to eliminate resonance.

In the prior art, an integral valve spring seat is adopted, the manufacturing process is troublesome, the leftover is easy to generate, the waste is caused, and the utilization rate is poor.

Chinese patent CN211900722U discloses a split valve spring seat, and this patent includes spring seat, sealing ring and endotheca, its characterized in that: the spring seat comprises a base plate and a boss arranged below the base plate, wherein the base plate and the boss are of an integral structure, a round hole is formed in the middle of the bottom surface of the spring seat, and a diameter expansion area is formed on one side of the round hole positioned on the base plate; a sealing gasket ring is arranged on the side wall of the expanding area; the periphery of the top surface of the base plate is provided with a flanging; a shoulder is arranged at the edge angle position of the bottom surface of the base plate; the inner sleeve comprises a top plate and an inserting cylinder arranged below the top plate, the outer wall of the inserting cylinder is matched with the inner wall of the round hole, and a limiting hole is arranged on the bottom surface of the top plate in the inserting cylinder; the outer wall of the inner sleeve is in threaded connection with the round hole, and the sealing ring is arranged below the top plate and is positioned in the diameter expanding area. However, the technical scheme has the following defects: 1. the operation process is more complicated when separating spring holder and valve spring, and under whole device in operating condition, the spring holder is unstable inadequately, can influence valve spring's operating condition. 2. The patent does not relate to the installation and limitation of the valve spring, and in the working state of the valve spring, if the spring seat cannot keep the stability of the spring, the service efficiency of the whole device is directly affected.

Disclosure of Invention

1. Technical problem to be solved

The split valve spring seat is characterized in that a locking ring is arranged in a conical hole in the spring seat, a split structure is adopted, the damaged spring seat and the valve spring are conveniently replaced, the locking ring is in close contact with the spring seat, the stability of the spring seat in the operation of the device is solved, and the stability of an outer ring and an inner ring of the valve spring in the operation is protected and limited through a first supporting surface and a second supporting surface which are arranged at the bottoms of a base and a boss.

2. Technical proposal

In order to solve the technical problems, the utility model provides a split valve spring seat, which comprises a base, a boss, a locking ring and an insertion barrel, wherein the boss is arranged below the base; the bottom plane of the base is provided with a first supporting surface, and the outer ring spring is arranged on the first supporting surface; the boss comprises a second supporting surface and a guide sleeve, the second supporting surface is positioned on the plane of the bottom of the boss, the inner ring spring is arranged on the second supporting surface, the guide sleeve is arranged at the circular center opening of the bottom of the boss, and the guide sleeve is used for guiding the inner ring spring to work on the second supporting surface; the whole lock ring is conical, the lock ring is formed by dividing a complete conical part into two halves, a circular through hole is formed in the lock ring, an annular bulge is arranged in a circular inner hole, the lock ring is arranged in a conical hole in the base and the boss, and the inner wall of the conical hole is in close contact with the outer conical surface of the lock ring; the annular groove is formed in the insertion barrel, the insertion barrel is arranged at the circular through hole in the lock ring, the annular protrusion on the through hole in the lock ring is matched with the annular groove on the insertion barrel, and the lower half part of the insertion barrel penetrates through the guide sleeve.

Preferably, a cylindrical bolt is arranged on the annular groove of the insertion barrel, round holes are formed in annular protrusions in the two locking rings, the cylindrical bolt penetrates through the insertion barrel, and two ends of the cylindrical bolt are matched with the round holes of the annular protrusions in the locking rings.

Preferably, a sealing ring is arranged between the inner walls of the conical holes in the base and the boss and the outer conical surface of the locking ring.

Preferably, a baffle is arranged at the bottom of the guide sleeve.

Preferably, a limiting table is arranged on the second supporting surface.

Preferably, a fastening groove is provided on the outer circumferential surface of the base.

3. Advantageous effects

Compared with the prior art, the locking ring is arranged, so that the inner wall of the inner conical hole of the spring seat is closely contacted with the outer conical surface of the locking ring, the spring seat is effectively fixed, the spring seat cannot fall off under the elastic action of the spring, the first supporting surface and the second supporting surface which are arranged below the base and the boss are used for limiting the positions of the outer ring spring and the inner ring spring, the elastic potential energy of the spring is effectively realized, and the stability of integral work is effectively improved.

Through the annular bulge that sets up at the inside through-hole of catch with insert the annular groove on the section of thick bamboo and cooperate, the effectual stability of catch installation on inserting the section of thick bamboo that has improved is further realized inserting between section of thick bamboo and the catch through the cylinder bolt and is connected, even the valve spring is in long-time during operation, also can keep stable between catch and the section of thick bamboo of inserting, has also prevented because the catch drops and leads to the spring holder to break away from, damages the structure.

Drawings

FIG. 1 is a front view of a split valve spring seat;

FIG. 2 is a top view of a split valve spring seat;

FIG. 3 is a schematic perspective view of a split valve spring seat;

FIG. 4 is a schematic view of a base and boss structure of a split valve spring seat;

FIG. 5 is a top view of a base and boss of a split valve spring seat;

FIG. 6 is a schematic structural view of a split valve spring seat seal ring mounted in a tapered bore;

FIG. 7 is a front view of a split valve spring seat locking ring disposed on a cartridge;

FIG. 8 is a cross-sectional view of a split valve spring seat locking ring disposed on the cartridge along A-A;

FIG. 9 is a schematic perspective view of a split valve spring seat locking ring disposed on a cartridge;

FIG. 10 is a schematic view of a split valve spring seat with a cylindrical plug disposed on a cartridge;

FIG. 11 is a schematic structural view of a locking ring of a split valve spring seat;

fig. 12 is a schematic structural view of a locking ring assembly of a split valve spring seat.

In the figure:

1 is a base; 11 is a conical hole; 111 is a sealing ring; 12 is a first support surface; 13 is a buckling groove;

2 is a boss; 21 is a second support surface; 211 is a limit table; 22 is a guide sleeve; 221 is a baffle;

3 is a locking ring; 31 is a circular through hole; 311 is an annular bulge; 3111 is a round hole;

4 is a plug cylinder; 41 is an annular groove; 411 is a cylindrical plug.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

Example 1:

as shown in fig. 1, 2, 3, 4, 10 and 11: the split valve spring seat comprises a base 1, a boss 2, a locking ring 3 and an inserting cylinder 4, wherein the boss 2 is arranged below the base 1, the base 1 and the boss 2 are of an integral structure, a conical hole 11 is formed in the base 1 and the boss 2, and an opening of the conical hole 11 is formed in the center of the upper surface circle of the base 1; the bottom plane of the base 1 is provided with a first supporting surface 12, and the outer ring spring is arranged on the first supporting surface 12; the boss 2 comprises a second supporting surface 21 and a guide sleeve 22, the second supporting surface 21 is positioned on the bottom plane of the boss 2, the inner ring spring is arranged on the second supporting surface 21, the guide sleeve 22 is arranged at the circular center opening of the bottom of the boss 2, and the guide sleeve 22 is used for guiding the inner ring spring to work on the second supporting surface 21; the whole lock ring 3 is conical, the lock ring 3 is formed by dividing a complete conical part into two halves, a circular through hole 31 is arranged in the lock ring 3, an annular bulge 311 is arranged in the circular inner hole, the lock ring 3 is arranged in a conical hole 11 in the base 1 and the boss 2, and the inner wall of the conical hole 11 is in close contact with the outer conical surface of the lock ring 3; the insertion barrel 4 is provided with an annular groove 41, the insertion barrel 4 is arranged at the circular through hole 31 in the lock ring 3, the annular protrusion 311 on the through hole in the lock ring 3 is matched with the annular groove 41 on the insertion barrel 4, and the lower half part of the insertion barrel 4 penetrates through the guide sleeve 22. The function of the valve spring seat is to protect the valve spring and guide the valve spring to realize the correct reset of the valve, when the valve spring is installed, a professional tool is needed to press down the valve spring seat together with the valve spring, two lock rings 3 are sleeved on the plug cylinder 4, annular protrusions 311 inside the lock rings 3 are abutted with annular grooves 41 on the plug cylinder 4, the spring seat is loosened, and under the function of the valve spring, the inner wall of a conical hole of the valve spring seat is tightly attached to the outer circumferential surface of the lock ring 3, so that the valve spring does not fall off.

As shown in fig. 8, 9, 10 and 11: the cylindrical bolts 411 are arranged on the annular grooves 41 of the inserting cylinder 4, round holes 3111 are arranged in the annular protrusions 311 in the two locking rings 3, the cylindrical bolts 411 penetrate through the inserting cylinder 4, and two ends of each cylindrical bolt 411 are matched with the round holes 3111 of the annular protrusions 311 in the locking rings 3.

Through setting up cylinder bolt 411 for stabilize two catch rings 3, prevent under the spring force effect of valve spring that catch ring 3 from appearing the displacement phenomenon, and then influence the stability of valve spring holder.

As shown in fig. 4, a stopper 211 is provided on the second support surface 21.

Through setting up spacing platform 211, when pushing down the spring holder, the spring action is carried out to the inner circle spring on second holding surface 21 that can be stable, and spacing platform 211 can control the valve spring degree of depth of pushing down, has protected the elastic potential energy of spring, has increased the life of spring.

As shown in fig. 4: a locking groove 13 is provided on the outer circumferential surface of the base 1.

Through setting up buckle groove 13, improved holistic stability after having installed the spring holder, under the elasticity effect of valve spring, base 1 remains stable throughout with boss 2, improves work efficiency.

Example 2:

compared with embodiment 1, as shown in fig. 6, in this embodiment, a sealing ring 111 is disposed between the inner wall of the conical hole 11 in the base 1 and the boss 2 and the outer conical surface of the locking ring 3, and by disposing the sealing ring 111, the friction between the inner wall of the conical hole 11 and the outer conical surface of the locking ring 3 is increased, so as to prevent the spring seat from falling off under the action of the spring force of the valve spring, and thus the use is prevented from being affected.

As shown in fig. 5, a baffle 221 is provided at the bottom of the guide sleeve 22, and the baffle 221 is provided to block the seal ring 111, so that the seal ring 111 is always held on the inner wall of the tapered hole 11 of the spring seat, and the seal ring 111 does not fall off when the spring seat is mounted and released, and the friction force with the lock ring 3 can be maintained.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims

1. The split valve spring seat is characterized by comprising a base (1), a boss (2), a locking ring (3) and an inserting cylinder (4), wherein the boss (2) is arranged below the base (1), the base (1) and the boss (2) are of an integral structure, conical holes (11) are formed in the base (1) and the boss (2), and the openings of the conical holes (11) are formed in the center of the upper surface circle of the base (1); the bottom plane of the base (1) is provided with a first supporting surface (12), and the outer ring spring is arranged on the first supporting surface (12);

the boss (2) comprises a second supporting surface (21) and a guide sleeve (22), the second supporting surface (21) is positioned on the bottom plane of the boss (2), the inner ring spring is arranged on the second supporting surface (21), the guide sleeve (22) is arranged at the central opening of the bottom circle of the boss (2), and the guide sleeve (22) is used for guiding the inner ring spring to work on the second supporting surface (21);

the whole lock ring (3) is conical, the lock ring (3) is formed by dividing a complete conical part into two halves, a circular through hole (31) is formed in the lock ring (3), an annular bulge (311) is formed in the circular inner hole, the lock ring (3) is arranged in a conical hole (11) in the base (1) and the boss (2), and the inner wall of the conical hole (11) is in close contact with the outer conical surface of the lock ring (3);

the annular groove (41) is formed in the inserting cylinder (4), the inserting cylinder (4) is arranged at the circular through hole (31) in the lock ring (3), the annular protrusion (311) on the circular through hole in the lock ring (3) is matched with the annular groove (41) on the inserting cylinder (4), and the lower half part of the inserting cylinder (4) penetrates through the guide sleeve (22).

2. The split valve spring seat according to claim 1, wherein a cylindrical plug pin (411) is arranged on the annular groove (41) of the plug cylinder (4), round holes (3111) are formed in the annular protrusions (311) in the two lock rings (3), the cylindrical plug pin (411) penetrates through the plug cylinder (4), and two ends of the cylindrical plug pin (411) are matched with the round holes (3111) of the annular protrusions (311) in the lock rings (3).

3. The split valve spring seat according to claim 1, wherein a sealing ring (111) is arranged between the inner walls of the conical holes (11) in the base (1) and the boss (2) and the outer conical surface of the locking ring (3).

4. A split valve spring seat according to claim 1, characterized in that a baffle (221) is provided at the bottom of the guide sleeve (22).

5. A split valve spring seat according to claim 1, characterized in that a stop (211) is provided on the second support surface (21).

6. A split valve spring seat according to claim 1, characterized in that a snap groove (13) is provided on the outer circumferential surface of the base (1).