CN219062442U

CN219062442U - Mechanical hydraulic valve core

Info

Publication number: CN219062442U
Application number: CN202223310457.1U
Authority: CN
Inventors: 聂其祥
Original assignee: Xiamen Sunwell Fluid Control Equipment Co ltd
Current assignee: Xiamen Sunwell Fluid Control Equipment Co ltd
Priority date: 2022-12-11
Filing date: 2022-12-11
Publication date: 2023-05-23
Anticipated expiration: 2032-12-11

Abstract

The utility model relates to the technical field of hydraulic valve cores, in particular to a mechanical hydraulic valve core, which comprises a valve body and a valve seat, wherein the valve seat is fixed at the upper end of the valve body; according to the utility model, the position of the valve core plug at the communication position of the liquid inlet and the liquid outlet is adjusted, and the telescopic length of the telescopic ruler is checked, so that the size of the opening of the valve core plug at the communication position of the liquid inlet and the liquid outlet is accurately detected, and the flow of the liquid medium discharged is accurately controlled, so that the situation that the discharge amount of the liquid medium is too large or too small is avoided.

Description

Mechanical hydraulic valve core

Technical Field

The utility model relates to the technical field of hydraulic valve cores, in particular to a mechanical hydraulic valve core.

Background

The hydraulic valve is an automatic element operated by pressure oil, is controlled by the pressure oil of the pressure distribution valve, is usually used in combination with an electromagnetic pressure distribution valve, can be used for remotely controlling the on-off of oil, gas and water pipeline systems of a hydropower station, and is usually used for clamping, controlling, lubricating and other oil ways. The valve has a direct-acting type and a pilot type, and the valve core is a valve part for realizing the basic functions of direction control, pressure control or flow control by the movement of the valve body;

the patent application publication No. CN213511444U of reference discloses a leak-proof precision hydraulic valve core, and relates to the technical field of hydraulic valves. The valve comprises a valve core main body, wherein the valve core main body is fixed in a valve body and a valve seat, a first sealing rod sleeve and a second sealing rod sleeve are respectively fixed on the inner walls of the valve body and the valve seat, a bolt is fixed on the valve body, the bolt sequentially penetrates through the valve seat to be fixedly connected with the valve body, and a first sealing gasket and a second sealing gasket are sequentially arranged between the valve body and the valve seat from inside to outside; according to the utility model, the valve body and the valve seat can be separated through rotating the bolt, then the first sealing rod sleeve can be separated from the valve body through rotating the first sealing rod sleeve, then the second sealing rod sleeve can be separated from the valve seat through rotating the second sealing rod sleeve, then the sealing plug and the round rod can be separated through rotating the sealing plug, and finally the first sealing rod sleeve and the second sealing rod sleeve can be moved until the sealing plug is completely separated from the round rod, so that the valve core can be conveniently replaced, and then the medium leakage can be prevented through double-layer sealing of the first sealing gasket and the second sealing gasket;

however, the utility model has the following defects that when the liquid medium enters the liquid outlet through the liquid inlet, and the liquid medium is discharged from the liquid outlet, the opening and closing degree of the valve plug is difficult to accurately adjust, so that the flow rate of the liquid medium discharged from the liquid outlet is difficult to accurately adjust through the valve plug, the situation that the discharge amount of the liquid medium is too much or too little is easy to occur, and the structure for sealing the joint of the valve body and the valve seat in advance is lacking, so that the liquid medium is easy to flow to the joint of the valve body and the valve seat, and the leakage risk of the joint of the valve body and the valve seat is increased.

Disclosure of Invention

The utility model provides a mechanical hydraulic valve core, which is beneficial to accurately adjusting the flow of liquid medium discharged from a liquid outlet through the valve core and is beneficial to better reducing the leakage risk at the joint of a valve body and a valve seat.

In order to solve the problems in the prior art, the utility model discloses a mechanical hydraulic valve core, which comprises a valve body and a valve seat, wherein the valve seat is fixed at the upper end of the valve body;

an oil cavity is formed in the upper end in the valve seat, a piston block is matched in the oil cavity, a valve core rod is fixed at the lower end of the piston block, a valve core plate is fixed at the lower end of the valve core rod, a liquid inlet is formed in the lower end of the valve body, a valve core plug matched with the liquid inlet is connected to the lower end of the valve core plate, a liquid outlet communicated with the liquid inlet is formed in the right end of the valve body, an elastic sealing sleeve is sleeved on the periphery of the valve core plug, and the elastic sealing sleeve is connected between the lower end of the valve core plate and the inner bottom end of the valve seat;

and the upper end of the piston block is provided with a displacement measurement assembly.

Further, the valve core is plugged at the communication position of the liquid inlet and the liquid outlet.

Further, a limiting sleeve is fixed at the inner lower end of the valve seat, and the valve core rod slides downwards to penetrate through the limiting sleeve.

Further, limiting blocks are arranged on the left side and the right side of the lower end of the limiting sleeve, and the limiting blocks are fixed on the inner wall of the valve seat.

Further, the displacement measurement assembly comprises a movable rod, a sealing telescopic sleeve, a movable plate and an expansion ruler, wherein the movable rod is fixed on the outer side of the upper end of the piston block, the sealing telescopic sleeve is sleeved on the periphery of the movable rod, and the sealing telescopic sleeve is connected between the upper end of the piston block and the inner top end of the oil cavity.

Further, the movable rod penetrates through the valve seat in an upward sliding mode, the movable plate is fixed at the upper end of the movable rod, and the expansion ruler is connected between the movable plate and the valve seat.

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

1. the position of the valve core plug at the communication position of the liquid inlet and the liquid outlet is adjusted, and the telescopic length of the telescopic ruler is checked, so that the size of an opening of the valve core plug at the communication position of the liquid inlet and the liquid outlet is accurately detected, and the flow of the liquid medium is accurately controlled, so that the situation that the discharge amount of the liquid medium is too large or too small is avoided;

2. the valve core plug is blocked at the joint of the valve core plug and the liquid inlet through the elastic sealing sleeve, and the valve core plug is not moved out of the liquid inlet upwards when the left end of the liquid outlet is completely opened, so that the joint of the valve core plug and the liquid inlet is blocked by combining the elastic sealing sleeve, the upper end of the liquid outlet is blocked by combining the valve core plug, and medium liquid can be prevented from flowing to the joint of the valve seat and the valve body, and the leakage risk of the joint of the valve body and the valve seat can be reduced better.

Drawings

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

FIG. 2 is a schematic view of a partial enlarged structure of the utility model;

FIG. 3 is a schematic view of the bottom view of the valve core plate of the present utility model;

fig. 4 is a schematic view of the overall external structure of the present utility model.

In fig. 1-4: valve body 1, disk seat 2, oil pocket 3, piston block 5, sealed expansion sleeve 6, movable rod 7, fly leaf 8, telescopic ruler 9, case board 10, case pole 11, stop collar 12, case stopper 13, inlet 14, liquid outlet 15, stopper 16, elastic seal cover 17.

Detailed Description

Mechanical hydraulic valve core:

as shown in fig. 1, 3 and 4, in this embodiment, the valve seat 2 is fixed at the upper end of the valve body 1, an oil cavity 3 is opened at the inner upper end of the valve seat 2, a piston block 5 is matched in the oil cavity 3, a valve core rod 11 is fixed at the lower end of the piston block 5, a valve core plate 10 is fixed at the lower end of the valve core rod 11, a liquid inlet 14 is opened at the lower end of the valve body 1, a valve core plug 13 matched with the liquid inlet 14 is connected at the lower end of the valve core plate 10, a liquid outlet 15 communicated with the liquid inlet 14 is opened at the right end of the valve body 1, an elastic sealing sleeve 17 is sleeved at the periphery of the valve core plug 13, the elastic sealing sleeve 17 is connected between the lower end of the valve core plate 10 and the inner bottom end of the valve seat 2, the valve core plug 13 covers the communicating position of the liquid inlet 14 and the liquid outlet 15, a limiting sleeve 12 is fixed at the inner lower end of the valve seat 2, and the valve core rod 11 slides downwards to pass through the limiting sleeve 12;

when liquid medium is required to be discharged through the liquid outlet 15, and when the liquid medium enters the liquid outlet 15 through the liquid inlet 14, hydraulic oil in the oil cavity 3 drives the piston block 5 to move upwards, the piston block 5 can drive the valve core rod 11, the valve core plate 10 and the valve core plug 13 to move upwards, and the valve core rod 11 is limited by sliding through the sealing rod sleeve 12, so that stability in moving the valve core rod 11, the valve core plate 10 and the valve core plug 13 is guaranteed, and the position of the communicating part of the liquid inlet 14 and the liquid outlet 15 is covered by adjusting the valve core plug 13, at this time, the communicating part of the liquid inlet 14 and the liquid outlet 15 is opened by the valve core plug 13, the liquid medium in the liquid inlet 14 can enter the liquid outlet 15, and then the liquid medium is normally discharged through the liquid outlet 15.

As shown in fig. 1 and 2, in this embodiment, a displacement measurement assembly is disposed at an upper end of the piston block 5, the displacement measurement assembly includes a movable rod 7, a sealing telescopic sleeve 6, a movable plate 8 and an expansion ruler 9, the movable rod 7 is fixed at an outer side of an upper end of the piston block 5, the sealing telescopic sleeve 6 is sleeved at an outer periphery of the movable rod 7, the sealing telescopic sleeve 6 is connected between the upper end of the piston block 5 and an inner top end of the oil cavity 3, the movable rod 7 slides upwards to penetrate through the valve seat 2, the movable plate 8 is fixed at an upper end of the movable rod 7, and the expansion ruler 9 is connected between the movable plate 8 and the valve seat 2;

because the piston block 5 can compress the sealed flexible cover 6 when moving up, can drive movable rod 7 and fly leaf 8 and move up, fly leaf 8 can upwards stretch telescopic ruler 9, look over telescopic length of telescopic ruler 9 again, consequently, do benefit to the opening size of accurate detection case stopper 13 in feed liquor mouth 14 and liquid outlet 15 intercommunication department, thereby the flow size of accurate control discharge liquid medium, in order to avoid appearing the condition emergence that liquid medium emission is too much or too little, and shelter from the junction of movable rod 7 and disk seat 2 through sealed flexible cover 6, thereby can avoid hydraulic oil in the oil pocket 3 to enter into movable rod 7 and disk seat 2 junction, in order to avoid hydraulic oil to produce unexpected revealing, do benefit to the normal work of guaranteeing piston block 5.

In this embodiment, as shown in fig. 1 and 3, an elastic sealing sleeve 17 is sleeved on the periphery of the valve plug 13, the elastic sealing sleeve 17 is connected between the lower end of the valve plug plate 10 and the inner bottom end of the valve seat 2, the valve plug 13 covers the communication position between the liquid inlet 14 and the liquid outlet 15, both the left and right sides of the lower end of the limiting sleeve 12 are provided with limiting blocks 16, and the limiting blocks 16 are fixed on the inner wall of the valve seat 2;

and when the valve core plate 10 drives the valve core plug 13 to move up and down, the valve core plate 10 stretches or compresses the elastic sealing sleeve 17, the joint of the valve core plug 13 and the liquid inlet 14 is blocked by the elastic sealing sleeve 17, and when the left end of the liquid outlet 15 is completely opened by the valve core plug 13, the upper end of the valve core plate 10 is propped against the lower end of the limiting block 16 at the moment, so that the valve core plate 10 is prevented from continuously moving upwards, the valve core plug 13 is prevented from moving upwards out of the liquid inlet 14, the valve core plug 13 is always blocked at the upper end of the liquid inlet 14, in sum up, the joint of the valve core plug 13 and the liquid inlet 14 is blocked by the elastic sealing sleeve 17, and the upper end of the liquid outlet 15 is blocked by the valve core plug 13, so that medium liquid can be prevented from flowing to the joint of the valve seat 2 and the valve body 1, and the risk of leakage at the joint of the valve body 1 and the valve seat 2 can be better reduced.

Claims

1. The utility model provides a mechanical hydraulic pressure case, includes valve body (1) and disk seat (2), disk seat (2) are fixed in valve body (1) upper end, its characterized in that:

an oil cavity (3) is formed in the inner upper end of the valve seat (2), a piston block (5) is matched in the oil cavity (3), a valve core rod (11) is fixed at the lower end of the piston block (5), a valve core plate (10) is fixed at the lower end of the valve core rod (11), a liquid inlet (14) is formed in the lower end of the valve body (1), a valve core plug (13) matched with the liquid inlet (14) is connected to the lower end of the valve core plate (10), a liquid outlet (15) communicated with the liquid inlet (14) is formed in the right end of the valve body (1), an elastic sealing sleeve (17) is sleeved on the periphery of the valve core plug (13), and the elastic sealing sleeve (17) is connected between the lower end of the valve core plate (10) and the inner bottom end of the valve seat (2);

the upper end of the piston block (5) is provided with a displacement measuring assembly.

2. The mechanical hydraulic valve cartridge of claim 1, wherein: the valve core plug (13) covers the communication part of the liquid inlet (14) and the liquid outlet (15).

3. The mechanical hydraulic valve cartridge of claim 1, wherein: the lower end in the valve seat (2) is fixed with a limit sleeve (12), and the valve core rod (11) slides downwards to penetrate through the limit sleeve (12).

4. A mechanical hydraulic valve according to claim 3, wherein: limiting blocks (16) are arranged on the left side and the right side of the lower end of the limiting sleeve (12), and the limiting blocks (16) are fixed on the inner wall of the valve seat (2).

5. The mechanical hydraulic valve cartridge of claim 1, wherein: the displacement measurement assembly comprises a movable rod (7), a sealing telescopic sleeve (6), a movable plate (8) and an expansion ruler (9), wherein the movable rod (7) is fixed on the outer side of the upper end of the piston block (5), the sealing telescopic sleeve (6) is sleeved on the periphery of the movable rod (7), and the sealing telescopic sleeve (6) is connected between the upper end of the piston block (5) and the inner top end of the oil cavity (3).

6. The mechanical hydraulic valve cartridge of claim 5, wherein: the movable rod (7) upwards slides and penetrates through the valve seat (2), the movable plate (8) is fixed at the upper end of the movable rod (7), and the expansion ruler (9) is connected between the movable plate (8) and the valve seat (2).