CN218062638U - Hydraulic cavity pressure relief valve of hydraulic diaphragm metering pump - Google Patents
Hydraulic cavity pressure relief valve of hydraulic diaphragm metering pump Download PDFInfo
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- CN218062638U CN218062638U CN202121835659.0U CN202121835659U CN218062638U CN 218062638 U CN218062638 U CN 218062638U CN 202121835659 U CN202121835659 U CN 202121835659U CN 218062638 U CN218062638 U CN 218062638U
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- pressure relief
- metering pump
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Abstract
The utility model relates to a hydraulic pressure chamber pressure relief valve of hydraulic pressure diaphragm measuring pump. The valve is characterized in that a disc spring is sleeved on the valve core, an adjusting bolt is screwed above the valve sleeve, and the lower part of the adjusting bolt is matched with and limits the disc spring; and a locking nut is screwed outside the adjusting bolt. The spring of the utility model is formed by combining a plurality of groups of disc springs, can be combined according to the pressure specification of the hydraulic diaphragm metering pump, and can adjust the spring force by adjusting the adjusting bolt, so that the pressure application range of the hydraulic cavity pressure relief valve can be widened, and the requirement that the hydraulic cavity pressure relief valve needs to be designed with various specifications is reduced; the utility model discloses a board-like installation, disk seat are the mount pad promptly, fix on the periphery of the pump body through for the mounting hole fix with screw on the disk seat, and the processing of the pump body is just a lot simple like this, as long as just can accomplish on ordinary milling machine and drilling machine.
Description
Technical Field
The utility model relates to a hydraulic pressure chamber pressure relief valve of hydraulic pressure diaphragm measuring pump.
Background
The hydraulic cavity and the medium cavity are respectively arranged on two sides of a diaphragm of the hydraulic diaphragm metering pump. In order to ensure the stress balance on the two sides of the diaphragm and the safe operation of the hydraulic diaphragm metering pump, a pressure relief valve is generally arranged in the hydraulic cavity, when the pressure of the hydraulic cavity exceeds the specified pressure, partial hydraulic oil is discharged to an oil tank, the pressure is quickly relieved, and the safe operation of the hydraulic diaphragm metering pump is ensured.
The hydraulic diaphragm metering pump has more specifications, and a plurality of pressure relief valves are designed according to different pressure requirements, so that the production is very inconvenient. In addition, the conventional hydraulic pressure chamber relief valve is generally fixed on the circumferential surface of the pump body through the external thread at the front end, and the external thread for fixing the front end is relatively large, so that the screw hole for fixing on the pump body is relatively troublesome to machine, and the conventional hydraulic pressure chamber relief valve is generally machined on a lathe or a machining center. The processing difficulty and the processing cost are increased.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide a technical scheme of hydraulic pressure chamber pressure relief valve of hydraulic pressure diaphragm measuring pump.
The hydraulic cavity pressure relief valve of the hydraulic diaphragm metering pump comprises a valve seat, a valve core and a valve sleeve, wherein the valve sleeve is in threaded fit with the valve seat, the valve seat is provided with a hydraulic oil inlet, a pressure relief port and an oil storage cavity, the hydraulic oil inlet and the pressure relief port are communicated with the oil storage cavity, the valve core is arranged in the valve sleeve and positioned above the valve seat, and the valve core is in sealed fit with an upper sealing surface of the valve sleeve to shield the hydraulic oil inlet; and a locking nut is screwed outside the adjusting bolt.
The hydraulic cavity pressure relief valve of the hydraulic diaphragm metering pump is characterized in that a plurality of mounting holes are formed in the valve seat, a sealing gasket is arranged below the valve seat, and the valve seat is fixed on the circumferential surface of the pump body through the mounting holes by screws.
The hydraulic cavity pressure relief valve of the hydraulic diaphragm metering pump is characterized in that an upper disc spring seat and a lower disc spring seat are respectively arranged on the upper side and the lower side of a disc spring.
The hydraulic cavity pressure relief valve of the hydraulic diaphragm metering pump is characterized in that a through hole is formed in the middle of the adjusting bolt, and the upper portion of the valve core runs in the through hole.
The hydraulic cavity pressure relief valve of the hydraulic diaphragm metering pump is characterized in that a plurality of groups of disc springs are arranged.
The utility model discloses a spring forms for the combination of multiunit dish spring, can make up according to the pressure specification of hydraulic pressure diaphragm metering pump to the spring force is adjusted to accessible adjustment adjusting bolt, and the pressure application range of hydraulic pressure chamber pressure relief valve can widen a lot like this, reduces the requirement that the multiple specification of hydraulic pressure chamber pressure relief valve need design.
The utility model discloses a board-like installation, disk seat are the mount pad promptly, fix on the periphery of the pump body through for the mounting hole fix with screw on the disk seat, and the processing of the pump body is just a lot simple like this, as long as just can accomplish on ordinary milling machine and drilling machine.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1-adjusting the bolt; 2-locking the nut; 3-mounting a disc spring seat; 4-disc spring; 5-lower disc spring seat; 6-valve sleeve; 7-a valve core; 8-valve seat; 9-mounting holes; 10-a seal gasket; 11-hydraulic oil inlet; 12-pressure relief port.
Detailed Description
The invention will be further explained with reference to the drawings attached to the specification:
a hydraulic cavity pressure relief valve of a hydraulic diaphragm metering pump comprises a valve seat, a valve core and a valve sleeve, wherein the valve sleeve is in threaded fit with the valve seat, the valve seat is provided with a hydraulic oil inlet, a pressure relief port and an oil storage cavity, the hydraulic oil inlet and the pressure relief port are communicated with the oil storage cavity, the valve core is arranged in the valve sleeve and positioned above the valve seat, the valve core is in sealing fit with an upper sealing surface of the valve sleeve to shield the hydraulic oil inlet, when the pressure entering the hydraulic oil inlet is greater than the pressure of a disc spring, the hydraulic oil pushes the valve core open, the hydraulic oil inlet is communicated with the pressure relief port, and the hydraulic oil entering the pressure relief valve is discharged from the pressure relief port for pressure relief; in order to flexibly adjust the pressure of the pressure relief, a plurality of groups of disc springs are sleeved on the valve core, an upper disc spring seat and a lower disc spring seat are respectively arranged on the upper side and the lower side of each disc spring, an adjusting bolt is screwed above the valve sleeve, a through hole is formed in the middle of the adjusting bolt, the upper part of the valve core runs in the through hole, the lower part of the adjusting bolt is matched with the limiting disc spring, and the pressing force of the disc springs can be adjusted by adjusting the adjusting bolt, so that the inconvenience caused by the need of arranging pressure relief valves with different pressure specifications is avoided; the locking nut is arranged outside the adjusting bolt in a threaded connection mode, and after the position of the adjusting bolt is adjusted, the adjusting bolt can be guaranteed not to be displaced through locking of the locking nut, and opening pressure stability is guaranteed.
The specific installation process is as follows: the valve sleeve 6 is screwed into the valve seat 8, and then the valve core 7 is arranged in the valve seat 8; the disc spring seat 5 is arranged in the valve core 7, a plurality of groups of disc springs 4 are arranged on the valve core 7 as required, and then the disc spring seat 3 is arranged on the valve core 7; a locking nut 2 is screwed into the adjusting bolt 1, and then the adjusting bolt 1 is screwed into the valve sleeve 6 to compress a plurality of groups of disc springs 4 to generate pressing force, so that the valve core 7 is ensured to be combined with a sealing surface on the valve seat 8 in a sealing manner; the lower end of the valve seat 8 is provided with a sealing gasket 10, the distance of the adjusting bolt 1 screwed into the valve sleeve 6 is adjusted on the test bench according to the specified opening pressure, and the adjusting bolt 1 is locked by the locking nut 2 after adjustment, so that the stability of the opening pressure is ensured.
A plurality of mounting holes 9 are processed on the valve seat 8, the valve seat is fixed on the circumferential surface of the pump body through the mounting holes 9 by screws, so that a hydraulic oil inlet 11 is communicated with the hydraulic cavity, and a pressure relief opening 12 is communicated with the oil tank through the pump body; in an initial state, the valve core 7 is in sealing combination with a sealing surface on the valve seat 8 under the action of a disc spring force, and the hydraulic oil inlet 11 and the pressure relief port 12 are in a normally closed state and are not communicated with each other; in the liquid discharging process of the hydraulic diaphragm metering pump, when the pressure of the hydraulic cavity exceeds the set opening pressure, high-pressure hydraulic oil in the hydraulic cavity jacks up the valve core 7 through the hydraulic oil inlet 11, and the hydraulic oil is discharged to the oil tank through the pressure relief port 12 to be quickly relieved; when the pressure in the hydraulic cavity is reduced to be lower than the set opening pressure after pressure relief, the valve core 7 rapidly descends under the action of the disc spring force to be in sealing combination with the sealing surface on the valve seat 8, so that the hydraulic oil inlet 11 and the pressure relief port 12 are in a closed state, and the safe operation of the hydraulic diaphragm metering pump is ensured.
Claims (5)
1. A hydraulic cavity pressure relief valve of a hydraulic diaphragm metering pump comprises a valve seat, a valve core and a valve sleeve, wherein the valve sleeve is in threaded fit with the valve seat, the valve seat is provided with a hydraulic oil inlet, a pressure relief port and an oil storage cavity, the hydraulic oil inlet and the pressure relief port are communicated with the oil storage cavity, the valve core is arranged in the valve sleeve and positioned above the valve seat, and the valve core is in sealed fit with an upper sealing surface of the valve sleeve to shield the hydraulic oil inlet; and the outside of the adjusting bolt is in threaded connection with a locking nut.
2. The pressure relief valve for the hydraulic chamber of the hydraulic diaphragm metering pump according to claim 1, wherein a plurality of mounting holes are provided in the valve seat, a gasket is provided below the valve seat, and the valve seat is fixed to the circumferential surface of the pump body by screws through the mounting holes.
3. The hydraulic chamber pressure relief valve of a hydraulic diaphragm metering pump according to claim 1, wherein an upper disc spring seat and a lower disc spring seat are respectively arranged on the upper side and the lower side of the disc spring.
4. The hydraulic chamber pressure relief valve of a hydraulic diaphragm metering pump according to claim 1, wherein a through hole is provided in the middle of the adjusting bolt, and the upper portion of the spool runs in the through hole.
5. The hydraulic chamber pressure relief valve of a hydraulic diaphragm metering pump according to claim 1, wherein the disc springs are provided in a plurality of sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121835659.0U CN218062638U (en) | 2021-08-07 | 2021-08-07 | Hydraulic cavity pressure relief valve of hydraulic diaphragm metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121835659.0U CN218062638U (en) | 2021-08-07 | 2021-08-07 | Hydraulic cavity pressure relief valve of hydraulic diaphragm metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218062638U true CN218062638U (en) | 2022-12-16 |
Family
ID=84398552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121835659.0U Active CN218062638U (en) | 2021-08-07 | 2021-08-07 | Hydraulic cavity pressure relief valve of hydraulic diaphragm metering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218062638U (en) |
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2021
- 2021-08-07 CN CN202121835659.0U patent/CN218062638U/en active Active
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