CN212959330U - Safety pressure reducing valve - Google Patents
Safety pressure reducing valve Download PDFInfo
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- CN212959330U CN212959330U CN202021425833.XU CN202021425833U CN212959330U CN 212959330 U CN212959330 U CN 212959330U CN 202021425833 U CN202021425833 U CN 202021425833U CN 212959330 U CN212959330 U CN 212959330U
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- valve
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- chock
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Abstract
The utility model provides a safe pressure reducing valve, utilize magnetism to inhale the size that the restriction valve port was opened, liquid pressure can the case back-open magnet make the size that the valve port was opened enlarge once more when too big, can discharge the step-down in the twinkling of an eye, set up two springs on the core bar, first spring mainly used chock resumes closed valve port, second spring mainly used magnet resumes to lean on the fixed plate, inhale the effort through first spring, second spring and magnetism after the step-down is accomplished and make the rapid closed valve port of chock, the step-down is fast, shorten overload's live time.
Description
Technical Field
The utility model relates to a control valve technical field, concretely relates to safe depressurization valve.
Background
At present, hydraulic pressure is widely applied, a control valve, a safety valve and the like are important components of hydraulic equipment, the control valve is used for controlling the direction, flow, pressure and the like of liquid flow, and the safety valve is mainly used for preventing overload and the like in the operation process.
The pressure reduction speed of the existing safety valve is too slow, the opening and closing space of the valve port is small, the main reason is that the action range of the adopted driving piece for recovering the closing is limited, the valve port is opened greatly, the situation that the closing is difficult to recover can be caused, the drainage pressure reduction is too slow, the hydraulic equipment can be in an overload state for a period of time, and the service life is directly influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a safe pressure reducing valve:
a safe pressure reducing valve comprises a valve seat and a valve core, wherein a cavity is arranged in the valve seat, the valve seat is provided with a shoulder and a fixed plate which are positioned in the cavity, the valve seat is provided with a liquid inlet channel and a liquid outlet channel which are communicated with the cavity, the communication part of the liquid inlet channel and the cavity is a valve port, the valve port is positioned at the left end of the cavity, the valve core is horizontally positioned in the cavity and forms sliding fit with a horizontal sliding hole arranged on the shoulder, the left side of the shoulder is provided with a first spring sleeved outside the valve core, the first spring is always in a compressed state, two ends of the first spring respectively abut against the shoulder and a plug block arranged on the left side of the valve core, the left end surface of the valve core is provided with a sliding groove, the right end of the plug block is fixedly connected with a sliding rod in sliding fit with the sliding groove, the plug block seals the valve port, a movable space, the right side of restriction portion is equipped with the second spring of cover outside the case, the second spring is in compression state and both ends all the time and pushes up respectively and lean on restriction portion and fixed plate, the right-hand member of case passes the round hole that the fixed plate was equipped with, the right-hand member of case is equipped with the magnet, the magnet is inhaled the top with fixed plate constitution magnetism and is leaned on the cooperation, the second spring is greater than the elasticity of first spring to the chock to the elasticity of restriction portion, promotes the chock through the right and can make magnet and fixed plate break away from the top and lean on the state.
Preferably, an overflow channel is further arranged in the valve seat, the overflow channel communicates the cavity with the liquid inlet channel, a communication position with the liquid inlet channel is an overflow port, the overflow port is located on the left side of the valve port, the plug blocks the overflow port, and the overflow port is preferentially opened to achieve uniform overflow in the process that the plug moves to the right under pressure.
Preferably, the left end surface of the valve core is a convex surface, and a gap which is not smaller than the movable space is reserved between the left end of the valve core and the chock block.
Preferably, the left end face of the magnet is covered with an impact protection layer to prevent the fixed plate from impacting the magnet to cause damage.
Preferably, the left end part of the chock block is in sliding fit with the liquid inlet channel, and the lower end of the chock block abuts against a downward inclined slope surface arranged in the cavity, so that instant liquid drainage and pressure reduction can be realized when the valve port is opened.
The utility model discloses following beneficial effect has: utilize magnetism to inhale the size that the restriction valve port was opened, liquid pressure can the case back-open magnet make the size that the valve port was opened enlarge once more when too big, can discharge the step-down in the twinkling of an eye, set up two springs on the core bar, first spring mainly used chock resumes closed valve port, and second spring mainly used magnet resumes the top and leans on the fixed plate, through first spring, second spring and magnetism effort messenger chock closed valve port rapidly after the step-down is accomplished, and step-down speed is fast, shortens overload's live time.
Drawings
Fig. 1 is a schematic view of the internal structure of the embodiment.
1. A valve seat; 2. a valve core; 3. a cavity; 4. a shoulder; 5. a fixing plate; 6. a liquid inlet channel; 7. a liquid outlet channel; 8. a valve port; 9. a horizontal slide hole; 10. a first spring; 11. a chock block; 12. a chute; 13. a slide bar; 14. an activity space; 15. a restricting section; 16. a second spring; 17. a circular hole; 18. a magnet; 19. an overflow channel; 20. an overflow port; 21. a convex surface; 22. impacting the protective layer; 23. a slope surface.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
A safe pressure reducing valve comprises a valve seat 1 and a valve core 2, wherein a cavity 3 is arranged in the valve seat 1, the valve seat 1 is provided with a shoulder 4 and a fixing plate 5 which are positioned in the cavity 3, the valve seat 1 is provided with a liquid inlet channel 6 and a liquid outlet channel 7 which are both communicated with the cavity 3, the communication part of the liquid inlet channel 6 and the cavity 3 is a valve port 8, the valve port 8 is positioned at the left end of the cavity 3, the valve core 2 is horizontally positioned in the cavity 3 and forms sliding fit with a horizontal sliding hole 9 arranged on the shoulder 4, the left side of the shoulder 4 is provided with a first spring 10 which is sleeved outside the valve core 2, the first spring 10 is always in a compression state, two ends of the first spring respectively abut against the shoulder 4 and a plug block 11 arranged at the left side of the valve core 2, the left end surface of the valve core 2 is provided with a sliding groove 12, the right end of the plug block 11 is fixedly connected with a sliding rod 13, the left end of the plug 11 forms a sliding fit with the liquid inlet channel 6, the lower end of the plug 11 abuts against a downward inclined surface 23 arranged in the cavity 3, the valve core 2 is fixedly provided with a limiting part 15 on the right side of the shoulder 4, the right side of the limiting part 15 is provided with a second spring 16 sleeved outside the valve core 2, the second spring 16 is always in a compressed state, two ends of the second spring respectively abut against the limiting part 15 and the fixed plate 5, the right end of the valve core 2 penetrates through a round hole 17 formed in the fixed plate 5, the right end of the valve core 2 is provided with a magnet 18, the magnet 18 and the fixed plate 5 form a magnetic attraction abutting fit, the left end surface of the magnet 18 is covered with an impact protection layer 22 to prevent the fixed plate 5 and the magnet 18 from being impacted to cause damage, the elastic force of the second spring 16 on the limiting part 15 is greater than the elastic force of the first spring 10 on the plug 11, and the magnet.
The valve seat 1 is also internally provided with an overflow channel 19, the overflow channel 19 is communicated with the cavity 3 and the liquid inlet channel 6, the communication part of the overflow channel 19 and the liquid inlet channel 6 is provided with an overflow port 20, the overflow port 20 is positioned at the left side of the valve port 8, the plug 11 is used for plugging the overflow port 20, and the overflow port 20 is preferentially opened to carry out uniform overflow in the process that the plug 11 moves to the right under pressure.
The principle of speed reduction and pressure reduction: under normal conditions, the liquid pressure of the liquid inlet channel 6 cannot push the plug 11 to open the overflow port 20, when the liquid inlet flow exceeds the liquid outlet flow in hydraulic equipment, the embodiment can reduce the speed and reduce the pressure, generally, a reversing valve is in a fully closed state or other overload states in the reversing process, the liquid pressure at the liquid inlet channel 6 can be increased, when the liquid pressure is increased to overcome the elasticity of the first spring 10 and the second spring 16, the plug 11 moves rightwards to further compress the first spring 10, the overflow port 20 is opened, the liquid enters the cavity 3 through the overflow channel and flows out of the liquid outlet channel 7, the uniform overflow pressure reduction is realized, then the liquid pressure of the liquid inlet channel 6 is reduced, the elasticity of the first spring 10 enables the plug 11 to move leftwards to recover to the state of closing the overflow port, when the liquid pressure at the liquid inlet channel 6 is too large, and the opening of the overflow port 20 cannot meet the requirement of rapid pressure reduction, the chock 11 can continue to move rightwards to enable the push rod to apply thrust to the valve core 2, under the action of large thrust, magnetic attraction acting force can be overcome to enable the magnet 18 and the fixed plate 5 to be separated from a propping and leaning state, the distance between the magnet 18 and the fixed plate 5 is increased, the magnetic attraction acting force is weakened, the magnet 18 can be enabled to be instantly bounced off when being separated from the propping and leaning of the fixed plate 5, the distance between the valve port 8 and the chock 11 is also instantly increased, liquid inlet flow is increased to achieve instant liquid drainage and pressure reduction, then liquid pressure of the liquid inlet channel 6 is reduced, the elastic force of the second spring 16 pushes the limiting part 15 to drive the valve core 2 to move leftwards, the magnet 18 and the fixed plate 5 are enabled to recover the.
It is obvious that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. There is no need or no way to give poor examples of all embodiments. And that such obvious changes and modifications are within the scope of the present invention as defined by the appended claims.
Claims (5)
1. A safe pressure reducing valve is characterized in that: the valve comprises a valve seat (1) and a valve core (2), wherein a cavity (3) is arranged in the valve seat (1), the valve seat (1) is provided with a shoulder (4) and a fixed plate (5) which are positioned in the cavity (3), the valve seat (1) is provided with a liquid inlet channel (6) and a liquid outlet channel (7) which are both communicated with the cavity (3), the communication part of the liquid inlet channel (6) and the cavity (3) is a valve port (8), the valve port (8) is positioned at the left end of the cavity (3), the valve core (2) is horizontally positioned in the cavity (3) and forms sliding fit with a horizontal sliding hole (9) arranged on the shoulder (4), the left side of the shoulder (4) is provided with a first spring (10) sleeved outside the valve core (2), the first spring (10) is always in a compression state, and two ends of the first spring respectively abut against the shoulder (4) and a plug block (11) arranged on the left side, the left end face of the valve core (2) is provided with a sliding groove (12), the right end of the chock block (11) is fixedly connected with a sliding rod (13) which is in sliding fit with the sliding groove (12), the chock block (11) seals a valve port (8), a movable space (14) is reserved between the sliding rod (13) and the bottom of the sliding groove (12), the valve core (2) is fixedly provided with a limiting part (15) on the right side of a shoulder (4), the right side of the limiting part (15) is provided with a second spring (16) which is sleeved outside the valve core (2), the second spring (16) is always in a compression state, two ends of the second spring respectively abut against the limiting part (15) and a fixed plate (5), the right end of the valve core (2) penetrates through a round hole (17) formed in the fixed plate (5), the right end of the valve core (2) is provided with a magnet (18), the magnet (18) and the fixed plate (5) form a magnetic attraction abutting fit, and the elastic force of the second spring (16) on the limiting part ( ) The magnet (18) can be separated from the abutting state with the fixed plate (5) by pushing the chock (11) rightwards.
2. A safety pressure reducing valve as claimed in claim 1, wherein: an overflow channel (19) is further arranged in the valve seat (1), the cavity (3) is communicated with the liquid inlet channel (6) through the overflow channel (19), a liquid overflow port (20) is formed in the communication position of the overflow channel (19) and the liquid inlet channel (6), the liquid overflow port (20) is located on the left side of the valve port (8), and the liquid overflow port (20) is blocked by the plug block (11).
3. A safety pressure reducing valve as claimed in claim 1, wherein: the left end face of the valve core (2) is a convex face (21), and a gap which is not smaller than the movable space (14) is reserved between the left end of the valve core (2) and the chock block (11).
4. A safety pressure reducing valve as claimed in claim 1, wherein: the left end face of the magnet (18) is covered with an impact protection layer (22).
5. A safety pressure reducing valve as claimed in claim 1, wherein: the left end part of the chock (11) is in sliding fit with the liquid inlet channel (6), and the lower end of the chock (11) abuts against a downward slope (23) arranged in the cavity (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021425833.XU CN212959330U (en) | 2020-07-16 | 2020-07-16 | Safety pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021425833.XU CN212959330U (en) | 2020-07-16 | 2020-07-16 | Safety pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212959330U true CN212959330U (en) | 2021-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021425833.XU Active CN212959330U (en) | 2020-07-16 | 2020-07-16 | Safety pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212959330U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117927523A (en) * | 2024-03-25 | 2024-04-26 | 西安华创马科智能控制系统有限公司 | Electro-hydraulic reversing valve core for pure water bracket, electro-hydraulic reversing valve and hydraulic bracket |
-
2020
- 2020-07-16 CN CN202021425833.XU patent/CN212959330U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117927523A (en) * | 2024-03-25 | 2024-04-26 | 西安华创马科智能控制系统有限公司 | Electro-hydraulic reversing valve core for pure water bracket, electro-hydraulic reversing valve and hydraulic bracket |
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