CN211082428U - Stacked overflow valve - Google Patents
Stacked overflow valve Download PDFInfo
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- CN211082428U CN211082428U CN201921547295.9U CN201921547295U CN211082428U CN 211082428 U CN211082428 U CN 211082428U CN 201921547295 U CN201921547295 U CN 201921547295U CN 211082428 U CN211082428 U CN 211082428U
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Abstract
The utility model discloses a stack formula overflow valve, including valve body, adjusting spring, case and pressure measuring piece, the inside top of valve body is equipped with adjusting screw, the adjusting screw bottom is equipped with adjusting spring, the adjusting spring bottom is equipped with the spring holder, the spring holder bottom is equipped with the case, be equipped with the damping hole in the valve core side edge respectively, case outer end below is equipped with the locating part, the case bottom is equipped with the pressure measuring piece, adjusting screw with be equipped with the connecting piece between the adjusting spring, the damping hole runs through the valve core side edge, the case upper end left and right sides is equipped with out oil pipe respectively. The utility model discloses can guarantee that petrol can pass through smoothly, and do not have the oil mass to reveal, increase the setting of pressure measuring spare, can realize the accurate control to the oil mass, guarantee the normal use and the even running of valve body, do not receive ambient temperature's influence, guarantee the gas tightness of valve body inner chamber, avoid its pressure differential to receive the influence.
Description
Technical Field
The utility model relates to a stack overflow valve technical field especially relates to a stack overflow valve.
Background
The overflow valve is a common pressure control element in a hydraulic system and can be used as a directional valve or a safety valve. The superposition type hydraulic overflow valve in the prior art is divided into a direct-acting type and a pilot type according to the structural principle, wherein the direct-acting type consists of a valve body, a conical or spherical valve core and a pressure regulating spring, the pressure control precision of the direct-acting type is low, and the direct-acting type is often used as a pilot valve; the other is a pilot-operated relief valve consisting of a pilot valve and a two-stage or three-stage concentric main valve, which allows minute adjustment of pressure with high pressure control accuracy. However, the existing stacked overflow valve has the problem that the stable operation cannot be realized due to the fact that the control oil leaks in the oil quantity in the using process, and a valve core of the pilot valve is conical or spherical, so that a certain leakage amount exists regardless of a direct-acting overflow valve or a pilot-operated overflow valve, the working pressure is not stable enough, and the maintenance and the adjustment are inconvenient. Therefore, a superposition overflow valve is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem of providing a superposed overflow valve to overcome the problem of easy leakage of gasoline in the prior art; the working pressure of the overflow valve is adjusted, and the use precision of the overflow valve is improved.
The utility model provides a technical scheme that above-mentioned technical problem adopted is: the utility model provides a stack formula overflow valve, includes valve body, adjusting spring, case and pressure-measuring piece, the inside top of valve body is equipped with adjusting screw, the adjusting screw bottom is equipped with adjusting spring, the adjusting spring bottom is equipped with the spring holder, the spring holder bottom is equipped with the case, be equipped with the damping hole in the case side along respectively, case outer end below is equipped with the locating part, the case bottom is equipped with the pressure-measuring piece.
As a preferred embodiment of the present invention, wherein: and a connecting piece is arranged between the adjusting screw rod and the adjusting spring.
As a preferred embodiment of the present invention, wherein: the damping hole penetrates through the side edge of the valve core.
As a preferred embodiment of the present invention, wherein: and oil outlet pipes are respectively arranged on the left side and the right side of the upper end of the valve core.
As a preferred embodiment of the present invention, wherein: both ends are equipped with the oil filler point respectively about adjusting screw, the spiral portion is connected to the oil filler point bottom, the spiral portion outer end is equipped with the buffering rubber ball, the adjusting screw outer end is equipped with the screw rod mount pad, screw rod mount pad inner wall be equipped with the screw thread of spiral portion looks adaptation, screw rod mount pad bottom is equipped with the oil outlet.
Furthermore, the valve core is of a cylindrical structure, and the limiting part is fixed below the valve core in a welding mode.
Further, the left side wall and the right side wall of the valve body are respectively provided with an oil inlet pipe.
Furthermore, the inside of the oil inlet pipe is respectively provided with a check valve.
Further, the outer ends of the oil inlet pipes are respectively provided with a rubber sleeve.
Further, the valve body bottom is equipped with the connecting seat, the connecting seat inboard is equipped with the valve barrel.
Further, a heat insulation layer is arranged on the inner side of the valve sleeve and is in contact with the outer cavity of the valve core.
Compared with the prior art, the technical scheme of the utility model have following advantage:
1. the utility model provides a stacked overflow valve, the valve core of which adopts a cylindrical design and is provided with a damping hole inside, which can ensure that gasoline can pass through smoothly and no oil leakage exists; the arrangement of the pressure measuring piece is added, so that the accurate control of the oil quantity can be realized, and the normal use and the stable operation of the valve body are ensured; the limiting part is arranged, so that the valve core can move down to the upper end of the limiting part at most, and the situation that the valve core continuously moves down to block the top end of the oil inlet pipe and generate adverse effects on oil inlet is avoided.
2. Lubricating oil can be added into the oil filling hole, so that the rotation between the spiral part and the screw rod mounting seat is prevented from being blocked, and the service time of the screw rod mounting seat and the spiral part is prolonged; the buffering rubber ball can reduce the abrasion of the adjusting screw rod to the screw rod mounting seat in the rotating operation process, and ensure that the adjusting screw rod can generate practical pressure to the adjusting spring in the rotating process so that the adjusting spring generates corresponding deformation.
3. Set up the spring holder and be connected with the case in the spring bottom, can strengthen the joint strength of adjusting spring and case, avoid the case to drop, ensure that adjusting spring can play accurate adjustment effect to the case.
4. The stop valve arranged inside the oil pipe can prevent gasoline in the valve core from flowing back to influence the pressure difference in the valve core, and the rubber sleeve arranged at the top end of the right end can ensure the air tightness between the oil pipe and an external oil inlet pipeline, so that resource waste caused by the fact that the gasoline is not completely connected into the oil pipe is avoided.
5. The heat insulation layer is arranged, so that the temperature of the service environment of the valve cannot influence the oil in the overflow valve, the normal flow of the gasoline is ensured, and the operation flexibility of the valve body is ensured.
Drawings
Fig. 1 is a front view of a stacked overflow valve of the present invention;
fig. 2 is a schematic structural view of a stacked overflow valve of the present invention;
fig. 3 is a schematic structural diagram of a region a of the stacked overflow valve of the present invention;
fig. 4 is a schematic structural diagram of a B region of the stacked overflow valve of the present invention.
Wherein: the valve comprises a valve body 1, an adjusting screw rod 2, an oil injection hole 21, a spiral part 22, a buffer rubber bead 23, a screw rod mounting seat 24, an oil outlet hole 25, an adjusting spring 3, a spring seat 4, a valve core 5, a damping hole 6, a limiting part 7, an oil outlet pipe 8, an oil inlet pipe 9, a stop valve 10, a rubber sleeve 11, a heat insulation layer 12, a valve sleeve 13, a connecting seat 14 and a pressure measuring piece 15.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1-4, the stacked overflow valve provided in this embodiment includes a valve body 1, an adjusting spring 3, a valve core 5, and a pressure measuring piece 15, where an adjusting screw 2 is disposed at the top end inside the valve body 1, the adjusting spring 3 is disposed at the bottom end of the adjusting screw 2, a spring seat 4 is disposed at the bottom end of the adjusting spring 3, the valve core 5 is disposed at the bottom end of the spring seat 4, damping holes 6 are respectively disposed in side edges of the valve core 5, a limiting piece 7 is disposed below the outer end of the valve core 5, the pressure measuring piece 15 is disposed at the bottom end of the valve core 5, and the pressure measuring piece 15 is configured to measure a pressure difference caused by gasoline in the valve core 5 to an outer cavity of the valve core 5, so as to determine whether the adjusting screw 2 needs to be.
Adjusting screw 2 with be equipped with the connecting piece between adjusting spring 3, connect adjusting screw 2 and adjusting spring 3, ensure that adjusting screw 2 can play the control action to adjusting spring 3.
The damping hole 6 penetrates through the side edge of the valve core 5, and the damping hole 6 is arranged to ensure that gasoline can smoothly enter the upper part of the valve core 5 through the valve core 5, so that the gasoline in the valve core 5 cannot leak, and the pressure difference in the valve core 5 is unstable.
The left side and the right side of the upper end of the valve core 5 are respectively provided with an oil outlet pipe 8, so that gasoline above the valve core 5 can conveniently overflow.
The valve core 5 is of a cylindrical structure, the limiting piece 7 is fixed below the valve core 5 in a welding mode, the cylindrical valve core 5 cannot leak oil, unstable hydraulic pressure in the upper cavity and the lower cavity of the valve core 5 is avoided, the limiting piece 7 is arranged, the valve core 5 can move down to the upper end of the limiting piece 7 at most, and the situation that the valve core 5 continuously moves down to block the top end of the oil inlet pipe 9 and has adverse effect on oil inlet is avoided.
And the left side wall and the right side wall of the valve body 1 are respectively provided with an oil inlet pipe 9.
The oil inlet pipe 9 is internally provided with a check valve 10 respectively, and the check valve 10 can prevent gasoline in the valve core 5 from refluxing and influencing the pressure difference in the valve core 5.
The outer end of the oil inlet pipe 9 is provided with a rubber sleeve 11 respectively, the rubber sleeve 11 can ensure the air tightness between the oil inlet pipe 9 and an external oil pipe, and therefore resource waste caused by incomplete access of gasoline to the oil inlet pipe 9 is avoided.
The bottom end of the valve body 1 is provided with a connecting seat 14, and the inner side of the connecting seat 14 is provided with a valve sleeve 13.
The inner side of the valve sleeve 13 is provided with a heat insulation layer 12, the heat insulation layer 12 is in contact with the outer cavity of the valve core 5, and the heat insulation layer 12 is arranged, so that the temperature of the valve service environment cannot influence the gasoline in the overflow valve, the normal flow of the gasoline is ensured, and the flexibility of the valve body operation is ensured.
The utility model discloses a stack formula overflow valve of scheme, insert oil pipe in the 9 outer ends of inlet tube, utilize 11 oil pipe of entangling of rubber sleeve, with the outer intracavity of the leading-in case 5 below of petrol, petrol is full of case 5 below earlier gradually, after the petrol of case 5 below contacts case 5, the hydraulic pressure of petrol promotes case 5 and shifts up, adjusting spring 3 shortens, in this period, petrol utilizes petrol own pressure and the power that external petrol got into the inner chamber and produces to press case 5 below petrol through damping hole 6 into case 5 top, petrol in case 5 top reaches a quantitative back, cause pressure differential to make case 5 move down, adjusting spring 3 extends, open the overflow valve and according to the external manometer numerical value of casting die 15, adjust in real time the position of case 5 through adjusting screw 2.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A stacked overflow valve comprises a valve body (1), an adjusting spring (3), a valve core (5) and a pressure measuring piece (15), and is characterized in that an adjusting screw (2) is arranged at the top end inside the valve body (1), the adjusting spring (3) is arranged at the bottom end of the adjusting screw (2), a spring seat (4) is arranged at the bottom end of the adjusting spring (3), the valve core (5) is arranged at the bottom end of the spring seat (4), damping holes (6) are respectively arranged in the side edges of the valve core (5), a limiting piece (7) is arranged below the outer end of the valve core (5), and the pressure measuring piece (15) is arranged at the bottom end of the valve core;
a connecting piece is arranged between the adjusting screw rod (2) and the adjusting spring (3);
the damping hole (6) penetrates through the side edge of the valve core (5);
wherein, the left side and the right side of the upper end of the valve core (5) are respectively provided with an oil outlet pipe (8);
wherein, both ends are equipped with oil filler point (21) respectively about adjusting screw (2), spiral portion (22) are connected to oil filler point (21) bottom, spiral portion (22) outer end is equipped with buffering rubber ball (23), adjusting screw (2) outer end is equipped with screw rod mount pad (24), screw rod mount pad (24) inner wall be equipped with the screw thread of spiral portion (22) looks adaptation, screw rod mount pad (24) bottom is equipped with oil outlet (25).
2. The overflow valve of claim 1, wherein the valve core (5) is of a cylindrical structure, and the limiting member (7) is fixed below the valve core (5) in a welding manner.
3. An overflow valve according to claim 1, characterised in that the left and right side walls of the valve body (1) are provided with an oil inlet pipe (9), respectively.
4. A superimposed overflow valve according to claim 3, characterised in that the oil inlet pipes (9) are each provided with a flow stop valve (10) inside.
5. An overlapped overflow valve as claimed in claim 3, wherein the outer ends of the oil inlet pipes (9) are respectively provided with rubber sleeves (11).
6. A superposed overflow valve according to claim 1, characterised in that the valve body (1) is provided at its bottom end with a connecting seat (14), and that the connecting seat (14) is provided inside with a valve sleeve (13).
7. An overlapped overflow valve as claimed in claim 6, wherein a heat insulating layer (12) is arranged inside the valve sleeve (13), and the heat insulating layer (12) is in contact with the outer cavity of the valve core (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921547295.9U CN211082428U (en) | 2019-09-17 | 2019-09-17 | Stacked overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921547295.9U CN211082428U (en) | 2019-09-17 | 2019-09-17 | Stacked overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211082428U true CN211082428U (en) | 2020-07-24 |
Family
ID=71644804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921547295.9U Active CN211082428U (en) | 2019-09-17 | 2019-09-17 | Stacked overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211082428U (en) |
-
2019
- 2019-09-17 CN CN201921547295.9U patent/CN211082428U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315200 No.128, Jinhe Road, Jiaochuan street, Zhenhai District, Ningbo City, Zhejiang Province Patentee after: Ningbo Haiwei Hydraulic Technology Co.,Ltd. Address before: 315200 No.128, Jinhe Road, Jiaochuan street, Zhenhai District, Ningbo City, Zhejiang Province Patentee before: NINGBO ZHENHAI HAIWEI HYDRAULIC TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |