CN110617247A

CN110617247A - One-way valve

Info

Publication number: CN110617247A
Application number: CN201911011643.5A
Authority: CN
Inventors: 张博鸿; 郭井和; 徐标
Original assignee: SHANGHAI YINUO KORVET PUMP Co Ltd
Current assignee: SHANGHAI YINUO KORVET PUMP Co Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2019-12-27

Abstract

The invention relates to the technical field of hydraulic valves, and particularly discloses a one-way valve. The one-way valve provided by the invention comprises a one-way valve body, a worm sleeve, a worm wheel and a pressure display assembly, wherein the one-way valve body comprises an adjusting rod, and the adjusting rod can adjust the conduction pressure at the inlet of the one-way valve by rotating around the axial direction of the adjusting rod; the worm sleeve is slidably sleeved on the adjusting rod and can rotate along with the adjusting rod, the worm sleeve is provided with external threads, and the adjusting rod drives the worm sleeve to rotate along the axis; the worm wheel is meshed with the worm sleeve; the pressure display assembly is connected with the worm gear and used for displaying the conducting pressure. The one-way valve provided by the invention can display the current conduction pressure in real time, and when the pressure provided for a downstream device needs to be changed, the position of the adjusting rod is changed, and the pressure value displayed by the pressure display component is observed, so that the on-line adjustment of the conduction pressure of the one-way valve can be realized.

Description

One-way valve

Technical Field

The invention relates to the technical field of hydraulic valves, in particular to a one-way valve.

Background

The check valve in the prior art comprises a valve body, a valve seat, a valve core, a spring and an adjusting bolt, wherein the valve core and the spring are arranged in the valve body, the spring is connected with the valve core and the valve seat, the valve seat is connected with the valve body, and the adjusting bolt is connected to the valve core and used for adjusting the conducting pressure of the valve core. When the medium reaches a certain pressure value, the valve is opened, the medium flows out, and when the medium pressure does not reach the set conduction pressure, the valve prevents the medium from reversely flowing. In the field working condition, the required pressure of the device at the downstream of the one-way valve changes in real time, so that the required pressure for opening the valve needs to be changed correspondingly, but the one-way valve with the structure is difficult to adjust on line, the one-way valve needs to be disassembled when the pressure is adjusted, the current pressure value cannot be displayed, the one-way valve cannot be accurately adjusted at one time sometimes, the one-way valve needs to be disassembled for multiple times for adjustment, and the difficulty is brought to field operation. The multiple disassembly easily causes the reduction of the sealing performance of the check valve, the leakage occurs and the adjustment efficiency is low.

Accordingly, a check valve is needed to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a one-way valve to solve the problems that the conventional one-way valve is difficult to adjust the conduction pressure on line, and the one-way valve needs to be detached when the pressure is adjusted, so that the adjustment efficiency is low.

In order to achieve the purpose, the invention adopts the following technical scheme:

a one-way valve comprising:

the check valve body comprises an adjusting rod, and the adjusting rod can adjust the conduction pressure at the inlet of the check valve by rotating around the axial direction of the adjusting rod;

the worm sleeve is sleeved on the adjusting rod and can rotate along with the adjusting rod, and external threads are arranged on the worm sleeve;

the worm wheel is arranged on the one-way valve body and meshed with the worm sleeve;

and the pressure display component is connected with the worm gear and is used for displaying the conduction pressure.

Preferably, the check valve body comprises a valve cover and a valve core assembly, one end of the adjusting rod is connected to the valve core assembly, the adjusting rod is rotatably arranged on the valve cover in a penetrating mode, and the other end of the adjusting rod is located outside the valve cover.

Preferably, the adjusting rod comprises a first shaft, a second shaft and a third shaft which are sequentially distributed along the axial direction of the adjusting rod; the first shaft penetrates through the valve core assembly, the second shaft penetrates through the valve cover in a rotating mode, and the third shaft is located outside the valve cover; the third shaft comprises a first connecting area and an operating area, the operating area is arranged at the other end of the adjusting rod, the first connecting area is located between the operating area and the second shaft, and a limiting part is arranged on the first connecting area to limit the worm sleeve to slide along the axial direction of the adjusting rod.

Preferably, a thread is arranged on the first connecting area, the limiting member is a lock nut, and the lock nut is screwed on the first connecting area and can abut against one end of the worm sleeve.

Preferably, the third shaft further comprises a second connecting area, the second connecting area is arranged between the second shaft and the first connecting area, the second connecting area is sleeved with the worm sleeve, and the worm sleeve is connected with the adjusting rod through a key.

Preferably, the valve core assembly comprises a spring seat, a spring and a valve core, one end of the spring abuts against the valve core, the other end of the spring abuts against the spring seat, the spring seat is provided with a threaded hole, one end of the adjusting rod is in threaded connection with the spring seat, and the valve core is arranged at an opening of the check valve body to control the opening and closing of the check valve.

Preferably, the check valve further comprises a first shaft sleeve, and the first shaft sleeve is slidably sleeved on the adjusting rod and is located between the valve cover and the worm sleeve.

Preferably, the check valve still includes the safety guard, the safety guard is including dismantling the connection ground fixed part and dismantling the portion, the fixed part connect in the check valve body, adjust the pole the worm cover with the worm wheel all set up in the safety guard.

Preferably, the pressure display assembly is arranged outside the safety cover and comprises a dial and a pointer positioned on one side of the dial, and the pointer is connected with the worm wheel through a connecting piece and rotates along with the worm wheel; the dial is fixed on the safety cover.

Preferably, the connecting piece includes that bolt and cover are located second shaft sleeve outside the bolt, the worm wheel cover is located outside the bolt, and with the bolt passes through the key-type connection, the worm wheel is located the nut of bolt with between the second shaft sleeve, the one end of second shaft sleeve passes the fixed part, and is located the fixed part outside, the one end of second shaft sleeve is connected with the calibrated scale, other end butt in the worm wheel, the pointer pass through the screw connection in the one end of bolt.

The invention has the beneficial effects that: the adjusting rod can rotate around the axial direction to adjust the conduction pressure at the inlet of the one-way valve, the adjusting rod rotates, the conduction pressure changes along with the conduction pressure, the adjusting rod rotates to drive the worm sleeve to rotate, the worm wheel is meshed with the worm sleeve, the worm wheel rotates along with the rotation of the worm sleeve, the worm wheel is connected with the pressure display assembly, and when the worm wheel rotates, the pressure value displayed by the pressure display assembly changes, so that when the adjusting rod rotates, the pressure value displayed by the pressure display assembly changes along with the pressure value. When the pressure provided for a downstream device needs to be changed, the adjusting rod is rotated and the pressure value displayed by the pressure display assembly is observed at the same time, so that the on-line adjustment of the conducting pressure can be realized, the one-way valve does not need to be detached from the pipeline and then adjusted, and the adjusting efficiency is high.

Drawings

FIG. 1 is a top view of a one-way valve provided by an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a one-way valve provided by an embodiment of the present invention;

fig. 3 is a cross-sectional view taken along the line a-a in fig. 1.

In the figure:

1-a safety shield; 11-a removal part; 12-a fixed part;

2-locking the nut;

31-worm cover; a 32-worm gear;

4-a pointer; 5-dial scale; 6-a first shaft sleeve;

7-a one-way valve body; 71-adjusting rod; 711-operating zone; 72-valve cover; 73-spring seat; 74-a spring; 75-a valve core;

8-bolt; 9-a screw; 10-second bushing.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the present invention, orientation words such as "upper", "lower", "left" and "right" are defined, and in the case where no description is given to the contrary, the use of the orientation words means that the check valve provided in the present invention is defined in the normal use, and the direction of the upper, lower, left and right is the same as that shown in the drawings, and "inner" and "outer" mean inner and outer with respect to the outline of each component itself. These directional terms are used for ease of understanding and are not intended to limit the scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a check valve, can show current conducting pressure in real time, and online adjustment conducting pressure is convenient.

As shown in fig. 1-2, the check valve provided in this embodiment includes a check valve body 7, a worm housing 31, a worm wheel 32, and a pressure display assembly, wherein the check valve body 7 includes an adjustment lever 71, and the adjustment lever 71 adjusts a pilot pressure at an inlet of the check valve by rotating around an axial direction thereof. The worm sleeve 31 is slidably sleeved on the adjusting rod 71 and can rotate along with the adjusting rod 71, the worm sleeve 31 is provided with external threads, and the adjusting rod 71 drives the worm sleeve 31 to rotate along the axis. The worm wheel 32 is engaged with the worm housing 31. And the pressure display component is connected with the worm wheel 32 and is used for displaying the conducting pressure. When the adjusting rod 71 rotates around the axial direction of the adjusting rod, the pressure value displayed by the pressure display assembly changes along with the adjusting rod, namely, the current conducting pressure is displayed, in the field working condition, when the pressure provided for a downstream device needs to be changed, the adjusting rod 71 moves along the axial direction of the downstream device, and meanwhile, the pressure display assembly is observed, namely, online pressure adjustment is realized, the adjusting efficiency is high, and the adjustment is carried out without detaching a one-way valve.

In the present embodiment, the check valve body 7 includes a valve cover 72 and a valve core assembly. One end of the adjusting rod 71 is connected to the valve core assembly, the adjusting rod 71 is rotatably arranged on the valve cover 72 in a penetrating way, and the other end of the adjusting rod 71 is positioned outside the valve cover 72.

In this embodiment, the spool assembly includes a spring seat 73, a spring 74, and a spool 75. One end of the spring 74 abuts against the valve element 75, and the other end abuts against the spring seat 73. The spring seat 73 is provided with a threaded hole, and one end of the adjustment lever 71 is screwed to the spring seat 73. The valve core 75 is disposed at the opening of the check valve body 7 to control the opening and closing of the check valve.

When the spring seat 73 moves, the deformation amount of the spring 74 is changed, so that the elastic force of the spring is changed, and the spring 74 is always in a compressed state in the working process. When the medium reaches a certain pressure value which is larger than the elastic force of the spring at the moment, the valve core 75 moves to one side close to the spring seat 73, the valve is opened, the medium flows in, and otherwise, the medium is prevented from entering.

Preferably, the adjusting rod 71 includes a first shaft, a second shaft and a third shaft sequentially distributed along the axial direction thereof, the first shaft is disposed through the valve core assembly, the second shaft is rotatably disposed through the valve cover 72, and the third shaft is located outside the valve cover 72. The third shaft includes a first connecting area 711 provided at the other end of the adjustment lever 71 and between the operating area 711 and the second shaft, and an operating area 711 provided with a stopper to limit the worm housing 31 from sliding in the axial direction of the adjustment lever 71.

In this embodiment, a thread is disposed on the first connecting section, the limiting member on the first connecting section is a lock nut 2, and the lock nut 2 is screwed to the first connecting section and can abut against one end of the worm housing 31. In other embodiments, the limiting member may be another structural member, and the characteristics of the first connection region may vary according to the limiting member, so as to limit the axial sliding of the worm sleeve 31 along the adjustment rod 71, which is not limited herein.

In this embodiment, the third shaft further includes a second connection region. The second connecting area is arranged between the second shaft and the first connecting area, the worm sleeve 31 is sleeved on the second connecting area, and the worm sleeve 31 is in key connection with the adjusting rod 71. Preferably, the key is of the flat key type, with torque being transmitted through the flat key connection.

In the present embodiment, the first collar 6 is slidably fitted over the adjustment rod 71 and disposed between the valve cover 72 and the worm housing 31. The first boss 6 makes the rotation of the adjustment lever 71 more smooth, and the position of the worm housing 31 can be adjusted by changing the length of the first boss 6.

Preferably, the one-way valve further comprises a safety shield 1. The safety cover 1 comprises a fixing part 12 and a detaching part 11 which are detachably connected, the fixing part 12 is connected with a valve cover 72, and an adjusting rod 71, a worm sleeve 31 and a worm wheel 32 are all arranged in the safety cover 1. In this embodiment, the fixing portion 12 is fixed on the valve cover 72 by bolts, the detachable portion 11 is connected with the fixing portion 12 by threads, the safety cover 1 ensures that the movement of the components such as the adjusting rod 71 and the worm sleeve 31 is not interfered by the outside, and when adjusting the pressure, the detachable portion 11 is only required to be unscrewed from the fixing portion 12.

In the present embodiment, the pressure display assembly is disposed outside the safety cover 1, and includes a dial 5 and a pointer 4 located on one side of the dial 5. The pointer 4 is connected with the worm wheel 32 through a connecting piece and rotates along with the worm wheel 32; the dial 5 is fixed on the fixing part 12 of the safety cover 1, and scale marks are distributed on the circumference. When the adjustment lever 71 is rotated, the pointer 4 is rotated accordingly to point to the current conduction pressure.

As shown in fig. 3, in the present embodiment, the connecting member for connecting the pointer 4 and the worm wheel 32 is a bolt 8 and a second shaft sleeve 10 sleeved outside the bolt 8. The worm wheel 32 is sleeved outside the bolt 8 and is in key connection with the bolt 8, and the worm wheel 32 is located between a nut of the bolt 8 and the second shaft sleeve 10. One end of the second bushing 10 passes through the fixing portion 12 and is located outside the fixing portion 12. The second bushing 10 has one end connected to the dial 5 and the other end abutting against the worm wheel 32. The pointer 4 is attached to one end of the bolt 8 by means of a screw 9. The worm gear 32 is preferably keyed to the bolt 8 to transmit torque. In other embodiments, the pointer 4 and the worm wheel 32 may also be driven by other types of connection members, and are not limited herein.

The pressure regulating process of the one-way valve provided by the invention comprises the following steps: the safety shield 1 is first opened, i.e. the detachable part 11 is detached from the fixed part 12. And then the locking nut 2 is loosened, so that gaps are reserved among the locking nut 2, the worm sleeve 31 and the first shaft sleeve 6, and the adjusting rod 71 is rotated more labor-saving. When the locking nut 2 is loosened, the relative displacement with the worm sleeve 31 cannot be larger than the length of the key in the axial direction of the adjusting rod 71, otherwise the key connection is disabled, and the pressure value displayed by the pressure display assembly is deviated. When a torsional external force acts on the operation area 711 of the adjustment lever 71 to rotate the adjustment lever 71, the spring holder 73 is screwed to the adjustment lever 71, and at this time, the spring holder 73 moves in the axial direction of the adjustment lever 71, the amount of deformation of the spring 74 changes, the elastic force of the spring 74 changes, and the conduction pressure of the check valve changes accordingly. When the adjusting rod 71 rotates, the worm sleeve 31 rotates along with the adjusting rod 71, the worm wheel 32 rotates along with the worm sleeve 31, and the pointer 4 rotates along with the rotation of the worm wheel 32, so as to point to a certain value of the dial 5, wherein the value is the current conducting pressure of the one-way valve. The lock nut 2 is tightened and finally the detachable portion 11 is attached to the fixed portion 12.

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. It will be apparent to those skilled in the art that other variations and modifications may be made in the foregoing description, and it is not necessary or necessary to exhaustively enumerate all embodiments herein. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A check valve, comprising:

the check valve comprises a check valve body (7) and a check valve body, wherein the check valve body comprises an adjusting rod (71), and the adjusting rod (71) can adjust the conduction pressure at the inlet of the check valve through rotating around the axial direction of the adjusting rod;

the worm sleeve (31) is sleeved on the adjusting rod (71) and can rotate along with the adjusting rod (71), and external threads are arranged on the worm sleeve (31);

the worm wheel (32) is arranged on the one-way valve body (7) and is meshed with the worm sleeve (31);

and the pressure display component is connected with the worm wheel (32) and is used for displaying the conducting pressure.

2. The check valve as recited in claim 1, wherein the check valve body (7) comprises a valve cover (72) and a valve core assembly, one end of the adjusting rod (71) is connected to the valve core assembly, the adjusting rod (71) is rotatably disposed on the valve cover (72), and the other end of the adjusting rod (71) is located outside the valve cover (72).

3. The non-return valve according to claim 2, characterised in that the regulating rod (71) comprises, in succession along its axial direction, a first shaft, a second shaft and a third shaft; the first shaft penetrates through the valve core assembly, the second shaft is rotatably penetrated through the valve cover (72), and the third shaft is positioned outside the valve cover (72); the third shaft includes a first connecting area and an operating area (711), the operating area (711) being provided at the other end of the adjustment lever (71), the first connecting area being located between the operating area (711) and the second shaft, and a stopper being provided on the first connecting area to restrict the worm housing (31) from sliding in the axial direction of the adjustment lever (71).

4. A non-return valve according to claim 3, characterised in that the first attachment area is provided with a thread, the retaining element is a lock nut (2), and the lock nut (2) is screwed onto the first attachment area and can abut against one end of the worm housing (31).

5. The check valve as in claim 3, wherein the third shaft further comprises a second connecting area disposed between the second shaft and the first connecting area, the worm housing (31) being fitted around the second connecting area, the worm housing (31) being keyed to the adjustment rod (71).

6. The check valve according to claim 2, wherein the valve core assembly comprises a spring seat (73), a spring (74) and a valve core (75), one end of the spring (74) abuts against the valve core (75), the other end of the spring abuts against the spring seat (73), the spring seat (73) is provided with a threaded hole, one end of the adjusting rod (71) is screwed with the spring seat (73), and the valve core (75) is arranged at an opening of the check valve body (7) to control opening and closing of the check valve.

7. The check valve as recited in claim 2, further comprising a first bushing (6), wherein the first bushing (6) is slidably fitted over the adjustment rod (71) and is located between the valve cover (72) and the worm sleeve (31).

8. The check valve according to claim 1, characterized in that the check valve further comprises a safety housing (1), the safety housing (1) comprising a detachably connected ground fixing portion (12) and a detachable portion (11), the fixing portion (12) being connected to the check valve body (7), the adjusting lever (71), the worm housing (31) and the worm wheel (32) being disposed within the safety housing (1).

9. The non-return valve according to claim 8, characterized in that the pressure display assembly is arranged outside the safety cover (1) and comprises a dial (5) and a pointer (4) positioned at one side of the dial (5), the pointer (4) is connected with the worm wheel (32) through a connecting piece and rotates along with the worm wheel (32); the dial (5) is fixed on the safety cover (1).

10. The check valve according to claim 9, wherein the connecting member comprises a bolt (8) and a second sleeve (10) sleeved outside the bolt (8), the worm wheel (32) is sleeved outside the bolt (8) and connected with the bolt (8) through a key, the worm wheel (32) is located between a nut of the bolt (8) and the second sleeve (10), one end of the second sleeve (10) penetrates through the fixing portion (12) and is located outside the fixing portion (12), one end of the second sleeve (10) is connected with the dial (5), the other end of the second sleeve (10) abuts against the worm wheel (32), and the pointer (4) is connected with one end of the bolt (8) through a screw (9).