CN216200816U

CN216200816U - High-pressure valve

Info

Publication number: CN216200816U
Application number: CN202122624703.XU
Authority: CN
Inventors: 刘永高
Original assignee: Taicang Yonggao Precision Machinery Co ltd
Current assignee: Taicang Yonggao Precision Machinery Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-05
Anticipated expiration: 2031-10-29

Abstract

The utility model relates to a high-pressure valve which comprises a valve body and an end cover, wherein a first cavity is reserved between the valve body and the end cover, a core hole is formed in the valve body, a valve core and a valve sleeve are arranged in the core hole, a second cavity is formed between the valve core and the valve sleeve, a nut is arranged at the lower end of the valve sleeve, the valve sleeve and the nut are both sleeved on the valve core, a plurality of first damping holes, second damping holes and third damping holes are respectively formed in the circumferential surface of the valve sleeve, and a third cavity, a fourth cavity and a fifth cavity are sequentially formed between the valve sleeve and the valve body from top to bottom. The utility model has the beneficial effects that: through the cooperation use of case and valve barrel, fluid need flow to third cavity, fourth cavity and fifth cavity through first damping hole, second damping hole and third damping hole from first cavity to circulation return circuit through the second cavity produces the pressure differential, makes unnecessary fluid spill over the flow-parallel oil return case in the oil outlet, reaches the effect of accurate control fluid, makes the oil pressure keep at 0 ~ 35 Mp's steady pressure, satisfies the hydraulic transmission needs.

Description

High-pressure valve

Technical Field

The utility model relates to the field of valves, in particular to a high-pressure valve.

Background

The high-pressure valve is used for controlling and adjusting the pressure of liquid, the valve generally works according to the principle that the pressure of the liquid acting on the valve core is balanced with the spring force, the spring of the existing high-pressure valve is directly abutted against the valve core, and after the high-pressure valve is used for a long time, the phenomena of dislocation and the like can occur between the spring and the valve core, so that the valve body and the valve core are unstable in matching, poor in sealing performance and incapable of accurately controlling the oil pressure.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is: a high pressure valve is provided to solve the problems set forth in the background art described above.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a high-pressure valve, includes valve body and end cover, the valve body with leave first cavity between the end cover, the core hole has been seted up on the valve body, downthehole case and the valve barrel of being equipped with of core, the case includes case upper portion and case lower part, the case with be formed with the second cavity between the valve barrel, the valve barrel lower extreme is equipped with the nut, the valve barrel with the nut all overlap establish with on the case, the valve body lower extreme is equipped with the motor cabinet, be equipped with in the motor cabinet with the gear wheel that the case lower part is connected, a plurality of first damping holes, second damping hole and third damping hole have been seted up on the valve barrel periphery respectively, the valve barrel with from top to bottom has formed gradually third cavity, fourth cavity and fifth cavity between the valve body.

Preferably, one side of the valve body is provided with a plurality of first oil holes corresponding to the first damping hole, the second damping hole and the third damping hole, one side of the valve body cavity far away from the first oil holes is provided with an oil outlet channel, the upper end of the oil outlet channel is provided with a second oil hole communicated with the oil outlet channel, and the oil outlet channel is communicated with the third damping hole.

Preferably, the upper part of the valve core corresponds to the first damping hole, the second damping hole and the third damping hole, a conical surface is arranged at the joint of the upper part of the valve core at the first damping hole and the second damping hole, and annular grooves are formed in the upper end and the lower end of the upper part of the valve core.

Preferably, the first damping holes, the second damping holes and the third damping holes are respectively rectangular, circular and convex, the first damping holes, the second damping holes and the third damping holes are respectively distributed in four groups at equal intervals around the circumferential surface of the valve sleeve, and the first damping holes, the second damping holes and the third damping holes correspond to the third chamber, the fourth chamber and the fifth chamber one to one.

Preferably, gear slot and motor groove have been seted up to the motor cabinet lower extreme, the motor cabinet lower extreme is close to one side in gear slot is equipped with spacing separation blade.

Preferably, the end cover is fixedly connected with the valve body through a plurality of hexagonal screws.

The utility model has the beneficial effects that: the utility model provides a high-pressure valve, uses through the cooperation of case and valve barrel, fluid need flow to third cavity, fourth cavity and fifth cavity through first damping hole, second damping hole and third damping hole from first cavity to flow through the circulation return circuit of second cavity and produce the pressure differential, make unnecessary fluid spill over the flow-parallel oil return tank in the oil outlet, reach the effect of accurate control fluid, make the oil pressure keep at 0 ~ 35 Mp's steady pressure, in order to satisfy hydraulic drive's work needs.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of another embodiment of the present invention;

FIG. 3 is a partial schematic view of the present invention;

fig. 4 is a partial cross-sectional structural diagram of the present invention.

In the figure: 1-valve body, 2-end cover, 3-first chamber, 4-core hole, 5-valve core, 51-valve core upper part, 52-valve core lower part, 53-conical surface, 54-annular groove, 6-valve sleeve, 61-first damping hole, 62-second damping hole, 63-third damping hole, 7-second chamber, 8-screw cap, 9-motor seat, 91-gear groove, 92-motor groove, 10-big gear, 11-third chamber, 12-fourth chamber, 13-fifth chamber, 14-first oil hole, 15-oil outlet channel, 16-second oil hole, 17-limiting baffle plate and 18-hexagonal screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1-4, a high pressure valve includes a valve body 1 and an end cover 2, a first chamber 3 is left between the valve body 1 and the end cover 2, a core hole 4 is formed on the valve body 1, a valve core 5 and a valve sleeve 6 are arranged in the core hole 4, the valve core 5 includes a valve core upper portion 51 and a valve core lower portion 52, the valve core 5 and the valve sleeve 6 axially slide with zero clearance fit, a second chamber 7 is formed between the valve core 5 and the valve sleeve 6, the second chamber 7 is communicated with a third chamber 11 and a fourth chamber 12 through a first damping hole 61 and a second damping hole 62, a nut 8 is arranged at the lower end of the valve sleeve 6, the lower end of the nut 8 is connected with a motor base, the valve sleeve 6 and the nut 8 are both sleeved on the valve core 5, a motor base 9 is arranged at the lower end of the valve body 1, a bull gear 10 connected with the valve core lower portion 52 is arranged in the motor base 9, a plurality of first damping holes 61, a plurality of bull gears 10, a plurality of which are respectively arranged at the circumferential surface of the valve sleeve 6, a plurality of first damping holes 61, a plurality of nut, a nut 8, and a nut 8, and a nut are respectively connected with a nut 8, and a nut are connected with a nut 8, and a nut 8 connected with a nut, and a nut 8 connected with a nut, and a nut, the second damping hole 62 and the third damping hole 63, the third chamber 11, the fourth chamber 12 and the fifth chamber 13 are formed between the valve housing 6 and the valve body 1 from top to bottom in sequence, and oil flows into the third chamber 11, the fourth chamber 12 and the fifth chamber 13 through the first damping hole 61, the second damping hole 62 and the third damping hole 63 to form oil pressure difference.

Preferably, one side of the valve body 1 is provided with a plurality of first oil holes 14 corresponding to the first damping hole 61, the second damping hole 62 and the third damping hole 63 for oil to flow through, an oil outlet passage 15 is arranged at one side of the cavity of the valve body 1 away from the first oil holes 14, a second oil hole 16 communicated with the oil outlet passage 15 is arranged at the upper end of the oil outlet passage 15, the oil outlet passage 15 is communicated with the third damping hole 63, the second oil hole 16 is communicated with the first chamber 3, and the oil enters the oil outlet passage 15 through the third damping hole 63 and flows into the first chamber 3 from the second oil hole 16.

Preferably, the valve core upper part 51 corresponds to the first damping hole 61, the second damping hole 62 and the third damping hole 63, a tapered surface 53 is arranged at the joint of the valve core upper part 51 at the positions of the first damping hole 61 and the second damping hole 62, an oil passing gap is formed between the first damping hole 61 and the second damping hole 62 through the tapered surface 53, and the upper end and the lower end of the valve core upper part 51 are both provided with annular grooves 54 for the annular grooves 54 to have an oil storage function.

Preferably, the first damping holes 61, the second damping holes 62 and the third damping holes 63 are respectively rectangular, circular and convex, the first damping holes 61, the second damping holes 62 and the third damping holes 63 are respectively distributed around the circumferential surface of the valve sleeve 6 in four groups at equal intervals, and the first damping holes 61, the second damping holes 62 and the third damping holes 63 are in one-to-one correspondence with the third chamber 11, the fourth chamber 12 and the fifth chamber 13 for forming oil passages.

Preferably, gear groove 91 and motor groove 92 have been seted up to motor cabinet 9 lower extreme for installation gear wheel 9 and motor, one side that motor cabinet 9 lower extreme is close to gear groove 91 is equipped with spacing separation blade 17, plays limiting displacement to gear wheel 10.

Preferably, the end cap 2 is fixedly connected with the valve body 1 through a plurality of hexagonal screws 18 for fixed installation.

During operation, the motor is installed in the cooperation of the lower end of the motor base 9, the motor is connected with the large gear 10 through the driving end of the motor, the large gear 10 is directly driven to rotate, the valve core drives the valve sleeve 6 to axially rotate, oil enters the second chamber 7 from the lower end of the valve core 10, and flows to the third chamber 11, the fourth chamber 12 and the fifth chamber 13 through the first damping hole 61, the second damping hole 62 and the third damping hole 63 respectively, the third chamber 11 and the fourth chamber 12 form an oil gap through the conical surface 53, the valve sleeve 6 is rotated to communicate the first damping hole 61, the second damping hole 62 and the third damping hole 63 with the first oil hole 14, and meanwhile, the third damping hole 63 is communicated with the oil outlet channel 15, the second oil outlet 16 and the first chamber 3 to form a circulation loop.

The above examples are intended to further illustrate the present invention, but are not intended to limit the utility model to these specific embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be understood to be within the protection scope of the present invention.

Claims

1. A high pressure valve comprising a valve body (1) and an end cap (2), characterized in that: a first chamber (3) is reserved between the valve body (1) and the end cover (2), a core hole (4) is formed in the valve body (1), a valve core (5) and a valve sleeve (6) are arranged in the core hole (4), the valve core (5) comprises a valve core upper portion (51) and a valve core lower portion (52), a second chamber (7) is formed between the valve core (5) and the valve sleeve (6), a nut (8) is arranged at the lower end of the valve sleeve (6), the valve sleeve (6) and the nut (8) are both sleeved on the valve core (5), a motor base (9) is arranged at the lower end of the valve body (1), a large gear (10) connected with the valve core lower portion (52) is arranged in the motor base (9), a plurality of first damping holes (61), second damping holes (62) and third damping holes (63) are respectively formed in the circumferential surface of the valve sleeve (6), a third chamber (11), a fourth chamber (12) and a fifth chamber (13) are sequentially formed between the valve sleeve (6) and the valve body (1) from top to bottom.

2. A high pressure valve as claimed in claim 1, wherein: the damping valve is characterized in that one side of the valve body (1) is provided with a plurality of first oil holes (14) corresponding to the first damping holes (61), the second damping holes (62) and the third damping holes (63), one side, far away from the first oil holes (14), of the cavity of the valve body (1) is provided with an oil outlet channel (15), the upper end of the oil outlet channel (15) is provided with a second oil hole (16) communicated with the oil outlet channel, and the oil outlet channel (15) is communicated with the third damping holes (63).

3. A high pressure valve as claimed in claim 1, wherein: the upper valve core part (51) corresponds to the first damping hole (61), the second damping hole (62) and the third damping hole (63), a conical surface (53) is arranged at the joint of the upper valve core part (51) at the positions of the first damping hole (61) and the second damping hole (62), and annular grooves (54) are formed in the upper end and the lower end of the upper valve core part (51).

4. A high pressure valve as claimed in claim 1, wherein: first damping hole (61), second damping hole (62) and third damping hole (63) are rectangle, circular and type of protruding respectively, first damping hole (61), second damping hole (62) and third damping hole (63) are four groups respectively and all surround valve barrel (6) periphery equidistance distributes, just first damping hole (61), second damping hole (62) and third damping hole (63) with third chamber (11), fourth chamber (12) and fifth chamber (13) one-to-one.

5. A high pressure valve as claimed in claim 1, wherein: gear groove (91) and motor groove (92) have been seted up to motor cabinet (9) lower extreme, motor cabinet (9) lower extreme is close to one side in gear groove (91) is equipped with spacing separation blade (17).

6. A high pressure valve as claimed in claim 1, wherein: the end cover (2) is fixedly connected with the valve body (1) through a plurality of hexagonal screws (18).