CN219587754U - Split valve seat - Google Patents

Abstract

The utility model belongs to the technical field of valve seats, in particular to a split valve seat which comprises an upper seat and a lower seat, wherein a groove is formed in the outer side of the lower seat, a rubber ring is arranged in the groove, air cavities are formed in the upper seat and the lower seat, a sealing block is arranged in the air cavities, a compression bar is arranged at the top of the sealing block, a sliding groove is formed in the inner wall of one side of the air cavity, an air inlet is formed in the joint of the rubber ring and the air cavity, a cavity is formed in the upper seat and is positioned at one side of the air cavity, a spring is arranged in the cavity, a buffer ring is arranged above the spring, and a sliding block is arranged on one side of the compression bar. The sealing performance between the valve seat and the mud pump channel can be effectively improved by arranging the air cavity and the compression bar; through being provided with cavity and buffer ring, can effectively avoid the valve body impact force too big to cause the damage to the valve seat, the buffer ring can sink into the cavity completely simultaneously, avoids the buffer ring to cause the influence to the sealing of valve body and valve seat contact position, and is lower than the possibility that the bush damaged, can use for a long time.

Description

Split valve seat

Technical Field

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

Background

Plunger pumps are an important device of hydraulic systems. The plunger reciprocates in the cylinder body to change the volume of the sealed working cavity, so as to realize oil absorption and pressure oil. The plunger pump is widely applied to occasions requiring high pressure, large flow and flow adjustment, such as hydraulic presses, engineering machinery and ships, and the plunger pump valve seat plays a large role in the fields of oil exploitation and large engineering due to the relatively stable valve action.

Patent number CN202022115639.8 discloses a shoulder-free split valve seat "comprising a base and a bushing; the base and the bushing are annular; the bushing is arranged at the upper end of the base; the outer ring surface of the base is not provided with a positioning shaft shoulder, and the outer ring surface of the base comprises a first conical surface for installation and positioning. The utility model uses the conical surface to replace the positioning shaft shoulder, and simultaneously increases the high-hardness and wear-resistant bushing to replace the base to be in contact with the valve body, thereby not only avoiding the conditions of stress concentration and breakage of the base, but also reducing the impact on the base and prolonging the service life of the component.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a split valve seat, which solves the problems that the sealing performance between the valve seat and a channel is poor and a bushing cannot be used for a long time.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a split type valve seat, includes seat and lower seat, the lower seat outside is provided with the recess, the inside rubber circle that is provided with of recess, the inside air cavity that is provided with of seat and lower seat, the inside sealing block that is provided with of air cavity, the sealing block top is provided with the depression bar, air cavity one side inner wall is provided with the spout, rubber circle and air cavity junction are provided with the air inlet, the inside cavity that is in of seat is provided with in air cavity one side position, the inside spring that is provided with of cavity, the spring top is provided with the buffer ring, depression bar one side is provided with the slider.

As a preferable technical scheme of the utility model, the groove is arranged at the outer side of the lower seat, and one side of the rubber ring is fixedly connected with the groove and communicated with the air cavity through the air inlet.

As a preferable technical scheme of the utility model, the air cavities are arranged in the upper seat and the lower seat, and the sealing blocks are connected with the air cavities in a sliding manner and are adaptive in size.

As a preferable technical scheme of the utility model, the compression bar is rotationally connected to the top of the sealing block, the sliding groove is formed in the air cavity, and the sliding block is fixedly connected to one side of the compression bar and is slidably connected to the sliding groove.

As a preferable technical scheme of the utility model, the cavity is arranged in the upper seat, the buffer ring is connected with the cavity in a sliding manner, and two ends of the spring are respectively and fixedly connected with the bottom of the cavity and the bottom of the buffer ring.

As a preferable technical scheme of the utility model, the inner wall of the top of the upper seat is a conical surface, and the buffer ring is flush with the bottom of the conical surface when the buffer ring is completely immersed into the cavity.

Compared with the prior art, the utility model provides the split valve seat, which has the following beneficial effects:

1. this split type valve seat has offered the air cavity through last seat and base inside, presses the depression bar downwards and makes it follow the spout downwardly moving, and this in-process sealing block is sent the air in the air cavity to the rubber circle in through the air inlet and makes it swell, and when sliding to the spout bottommost, rotates the depression bar and makes the slider slide into the horizontal passageway of spout in, can fix depression bar and slider in current position this moment, avoids the rubber circle resilience to make the air reflux get into in the air cavity, and this design can effectively increase the leakproofness between valve seat and the slush pump passageway.

2. This split type valve seat, through offer the cavity in last seat inside, the inside sliding connection of cavity has the buffer ring, can be applyed certain resistance by the spring of buffer ring bottom when the valve body pushes down, can effectively avoid the valve body impact force too big to cause the damage to the valve seat, in the buffer ring can submergence the cavity completely simultaneously, avoids the buffer ring to cause the influence to the seal of valve body and valve seat contact position, and this design is lower in the likelihood of bush damage, can use for a long time.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the structure of the present utility model;

FIG. 3 is an enlarged view of FIG. 1 at A;

FIG. 4 is an enlarged view of FIG. 1 at B;

FIG. 5 is an enlarged view of FIG. 1 at C;

FIG. 6 is a schematic view of the connection structure of the pressing rod and the sliding block of the present utility model.

In the figure: 1. an upper seat; 2. a lower seat; 3. a groove; 4. a rubber ring; 5. an air cavity; 6. a sealing block; 7. a compression bar; 8. a chute; 9. an air inlet; 10. a cavity; 11. a spring; 12. a buffer ring; 13. a sliding block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 6, in the present embodiment: the utility model provides a split type valve seat, including upper seat 1 and lower seat 2, the lower seat 2 outside is provided with recess 3, the inside rubber circle 4 that is provided with of recess 3, upper seat 1 and lower seat 2 are inside to be provided with air cavity 5, the inside sealing block 6 that is provided with of air cavity 5, sealing block 6 top is provided with depression bar 7, air cavity 5 one side inner wall is provided with spout 8, rubber circle 4 and air cavity 5 junction is provided with air inlet 9, upper seat 1 inside is provided with cavity 10 in air cavity 5 one side position, cavity 10 inside is provided with spring 11, the spring 11 top is provided with buffer ring 12, depression bar 7 one side is provided with slider 13.

In the embodiment, the groove 3 is arranged at the outer side of the lower seat 2, one side of the rubber ring 4 is fixedly connected with the groove 3 and communicated with the air cavity 5 through the air inlet 9, after the valve seat is arranged in the channel of the slurry pump, air in the air cavity 5 is sent into the rubber ring 4 to prop open the valve seat, so that a gap between the valve seat and the channel is completely blocked, and the tightness of the joint of the valve seat and the channel is effectively improved; the air cavity 5 is arranged in the upper seat 1 and the lower seat 2, the sealing block 6 is connected with the air cavity 5 in a sliding way and is adaptive in size, the sealing block 6 slides downwards along the top of the air cavity 5, so that air in the air cavity 5 can be extruded downwards and enters the rubber ring 4 through the air inlet 9, and the rubber ring is enlarged; the compression bar 7 is rotationally connected to the top of the sealing block 6, the sliding groove 8 is formed in the air cavity 5, the sliding block 13 is fixedly connected to one side of the compression bar 7 and is slidably connected to the sliding groove 8, the initial positions of the compression bar 7 and the sliding block 13 are positioned at the top of the sliding groove 8, when the joint of the valve seat and the channel is sealed, the compression bar 7 is pressed downwards to enable the compression bar 7 to move downwards along the sliding groove 8, air is sent into the rubber ring 4 in the process, when the compression bar 7 slides to the bottommost part of the sliding groove 8, the sliding block 13 is rotated to enable the sliding block 13 to slide into a transverse channel of the sliding groove 8, and at the moment, the compression bar 7 and the sliding block 13 can be fixed at the current position, so that the rubber ring 4 is prevented from rebounding to enable the air to flow back into the air cavity 5; the cavity 10 is arranged in the upper seat 1, the buffer ring 12 is slidably connected to the cavity 10, two ends of the spring 11 are fixedly connected to the bottom of the cavity 10 and the bottom of the buffer ring 12 respectively, when the valve seat works, a valve body is pressed downwards, a certain resistance is applied by the spring 11 at the bottom of the buffer ring 12, damage to the valve seat caused by too large impact force of the valve body can be effectively avoided, and when the valve body moves upwards, the spring 11 rebounds to drive the buffer ring 12 to slide upwards until reset; the inner wall of the top of the upper seat 1 is a conical surface, and the buffer ring 12 is flush with the bottom of the conical surface when completely immersed into the cavity 10, so that the buffer ring 12 does not influence the sealing of the contact position of the valve body and the valve seat in the working process.

The working principle and the using flow of the utility model are as follows: after the valve seat is installed, the pressing rod 7 is pressed downwards to enable the valve seat to move downwards along the sliding groove 8, in the process, the sealing block 6 sends air in the air cavity 5 into the rubber ring 4 through the air inlet 9 to expand the valve seat, when the valve seat slides to the bottommost part of the sliding groove 8, the pressing rod 7 is rotated to enable the sliding block 13 to slide into the transverse channel of the sliding groove 8, the pressing rod 7 and the sliding block 13 can be fixed at the current position at the moment, the rubber ring 4 is prevented from rebounding to enable the air to flow back into the air cavity 5, a certain resistance is applied to the valve seat by the spring 11 at the bottom of the buffer ring 12 when the valve body is pressed downwards in the working process of the valve seat, damage to the valve seat caused by too large impact force of the valve body can be effectively avoided, meanwhile, the buffer ring 12 can be completely immersed into the cavity 10, the impact of the buffer ring 12 on the sealing of the contact position of the valve body and the valve seat is avoided, and when the valve body moves upwards, the spring 11 rebounds to drive the buffer ring 12 to slide upwards until reset.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. A split valve seat, which is characterized in that: including seat (1) and lower seat (2), the lower seat (2) outside is provided with recess (3), recess (3) inside is provided with rubber circle (4), the inside air cavity (5) that are provided with of seat (1) and lower seat (2) of going up, air cavity (5) inside is provided with sealing block (6), sealing block (6) top is provided with depression bar (7), air cavity (5) one side inner wall is provided with spout (8), rubber circle (4) are provided with air inlet (9) with air cavity (5) junction, the inside air cavity (5) one side position that is in of seat (1) is provided with cavity (10), cavity (10) inside is provided with spring (11), spring (11) top is provided with buffer ring (12), depression bar (7) one side is provided with slider (13).

2. The split valve seat as claimed in claim 1, wherein: the groove (3) is formed in the outer side of the lower seat (2), and one side of the rubber ring (4) is fixedly connected to the groove (3) and communicated with the air cavity (5) through the air inlet (9).

3. The split valve seat as claimed in claim 1, wherein: the air cavity (5) is arranged inside the upper seat (1) and the lower seat (2), and the sealing block (6) is connected with the air cavity (5) in a sliding mode and is adaptive to the air cavity in size.

4. The split valve seat as claimed in claim 1, wherein: the compression bar (7) is rotationally connected to the top of the sealing block (6), the sliding groove (8) is formed in the air cavity (5), and the sliding block (13) is fixedly connected to one side of the compression bar (7) and is slidably connected to the sliding groove (8).

5. The split valve seat as claimed in claim 1, wherein: the spring is characterized in that the cavity (10) is formed in the upper seat (1), the buffer ring (12) is connected to the cavity (10) in a sliding mode, and two ends of the spring (11) are fixedly connected to the bottom of the cavity (10) and the bottom of the buffer ring (12) respectively.

6. The split valve seat as claimed in claim 1, wherein: the inner wall of the top of the upper seat (1) is a conical surface, and the buffer ring (12) is flush with the bottom of the conical surface when completely immersed into the cavity (10).