CN205136171U - Hydraulic pressure pressure regulating device - Google Patents
Hydraulic pressure pressure regulating device Download PDFInfo
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- CN205136171U CN205136171U CN201520893310.0U CN201520893310U CN205136171U CN 205136171 U CN205136171 U CN 205136171U CN 201520893310 U CN201520893310 U CN 201520893310U CN 205136171 U CN205136171 U CN 205136171U
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Abstract
The utility model discloses a hydraulic pressure pressure regulating device for be connected the pressure with the liquid of adjusting the entering pneumatic cylinder with hydraulic pump and pneumatic cylinder, include: the body, be equipped with be used for with the inlet of hydraulic pump intercommunication and with the communicating liquid inlet channel of inlet and pressure regulating passageway, still be equipped with be used for with the liquid outlet of liquid case intercommunication and with the communicating return flow line of liquid outlet, return flow line and liquid inlet channel communicate with each other, the air -vent valve, set up on the pressure regulating passageway open when the hydraulic pressure in the pressure regulating passageway reaches the hydraulic pressure of settlement allow liquid return with hydraulic pump connection's liquid case, the by pass vavle sets up on the return flow line, and liquid flows back to the liquid incasement under the state that the by pass vavle was opened. The utility model provides a technical problem lie in overcoming the shortcoming that current pneumatic cylinder hydraulic pressure is unstable and cause danger easily, provide one kind and can make hydraulic pressure keep the pressure regulating device in the numerical range who sets for.
Description
Technical field
The utility model relates to Hydraulic Field.Be specially a kind of hydraulic pressure pressure-regulating device.
Background technique
Oil hydraulic pump and oil hydraulic cylinder are conventional hydraulic power parts, and the liquid in fluid box pumps in the cylinder body of oil hydraulic cylinder by oil hydraulic pump, drive the piston movement of oil hydraulic cylinder, and other mechanical parts of piston driving move, thus realize the transmission of power.The pressure of oil hydraulic pump directly determines the motion of piston, and the pressure of oil hydraulic pump can not reach highly stable at present, and this causes the motion of piston to be difficult to control.In addition, when misoperation occurring or valve breaks down, the hydraulic pressure value of oil hydraulic pump and oil hydraulic cylinder can be caused to rise to dangerous situation.
Model utility content
The technical problem that the utility model solves is to overcome the unstable and shortcoming of easily causing danger of existing cylinder hydraulic, provides a kind of hydraulic pressure that makes to remain on pressure-regulating device in the number range of setting.
Hydraulic pressure pressure-regulating device of the present utility model, for being connected the pressure to regulate the liquid entering described oil hydraulic cylinder with oil hydraulic pump and oil hydraulic cylinder, comprising:
Body, described body is provided with liquid entering hole for being communicated with described oil hydraulic pump and the feed pathway communicated with described liquid entering hole and pressure ports, described body is also provided with for the liquid outlet be communicated with fluid box and the return flow line communicated with described liquid outlet, described return flow line communicates with described feed pathway;
Pressure regulator valve, opens when the described pressure regulator valve hydraulic pressure be arranged on described pressure ports in described pressure ports reaches the hydraulic pressure of setting and allows liquid to flow back to the fluid box be connected with oil hydraulic pump from pressure ports;
Reflux valve, described reflux valve is arranged on described return flow line, and under the state that described reflux valve is opened, liquid is flowed back in described fluid box from oil hydraulic cylinder by return flow line.
As preferably, described body is provided with the regulator hole communicated with described pressure ports, described pressure regulator valve is arranged in regulator hole, pressure regulator valve of telling comprises sealing block, adjusting pressuring valve core and pressure regulation valve rod and pressure adjusting spring, described sealing block is positioned at the inner terminal of described regulator hole, described sealing block outer wall is provided with the Sealing of the inner wall sealing making itself and described regulator hole, described sealing block has through hole, described through hole one end can communicate with the end of described pressure ports, the other end has the first sealing cone coordinated with described adjusting pressuring valve core, described adjusting pressuring valve core comprises the first portion with the second sealing cone coordinated with described first sealing cone and the second portion with intercommunicating pore, described intercommunicating pore communicates with described fluid box, under the state that described pressure regulator valve is opened, described pressure ports communicates with described intercommunicating pore, described pressure adjusting spring applies to make its second sealing cone and the first sealing cone of described sealing block to offset the power coordinated to described adjusting pressuring valve core under the pushing tow of described pressure regulation valve rod.
As preferably, described pressure adjusting spring comprises multi-disc disc spring, superimposed in the same way or oppositely superimposed or superimposed in the same way and reverse superimposed hybrid combining between multi-disc disc spring, one end of pressure regulation valve rod is enclosed within described in the multi-disc disc spring forming described pressure adjusting spring one end, the multi-disc disc spring forming the described pressure adjusting spring the other end is enclosed within the valve core rod of described spool, and the multi-disc disc spring formed in the middle part of described pressure adjusting spring has propped up a space between the end and the end of described valve core rod of described pressure regulation valve rod.
As preferably, described pressure regulator valve also comprises pressuring adjusting valve base, described pressuring adjusting valve base and described regulator hole are sealedly and fixedly connected, described pressure regulation valve rod is connected by the internal thread of outside thread with described pressuring adjusting valve base, and described pressure adjusting spring to be enclosed within described pressure regulation valve rod and by the direction pushing tow of the limit stoper on described pressure regulation valve rod to spool.
As preferably, described body is provided with the return port communicated with described return flow line, described return flow line is partitioned into two-part by described return port, one end of first portion communicates with described return port, the other end communicates with described feed pathway, one end of second portion communicates with described return port, the other end communicates with described liquid outlet, one end that described first portion communicates with described return port has the first conical seal (contact) face, described reflux valve comprises backflow valve rod and the backflow spool be fixedly connected with described backflow valve rod and the backflow valve gap with the fixed seal connection of described return flow line, described backflow spool has the second conical seal (contact) face matched with the primary sealing area of described return port under the pushing tow of described backflow valve rod, when described reflux valve is opened, described first portion is communicated by described return port with second portion, described backflow valve gap is enclosed within described backflow valve rod, and described backflow valve rod by its outside thread with the internal thread of described backflow valve gap be connected.
As preferably, described reflux valve also comprises the flinger ring be enclosed within described backflow valve rod, described flinger ring is between described backflow valve gap and described backflow spool, and the inner wall sealing of described flinger ring and described return port also surrounds the backflow cavity of receiving fluids jointly with the inwall of described return port.
As preferably, described feed pathway is provided with check valve and prevents liquid from flowing to oil hydraulic pump from oil hydraulic cylinder.
As preferably, described check valve is positioned at the upstream of the position that described feed pathway communicates with described return flow line.
As preferably, hydraulic pressure pressure-regulating device according to claim 1, is characterized in that, described hydraulic pressure pressure-regulating device also comprises hydralic pressure gauge, the gauge stand of described hydralic pressure gauge has the measuring pressure passage communicated with described feed pathway, and the termination of described measuring pressure passage is provided with the joint for being communicated with fluid box.
Compared to the prior art hydraulic pressure pressure-regulating device of the present utility model, has following beneficial effect:
1, hydraulic pressure pressure-regulating device pressure ports of the present utility model being provided with to open when the hydraulic pressure of pressure regulator valve in pressure ports reaches the hydraulic pressure of setting allows liquid to flow back to the fluid box be connected with oil hydraulic pump from pressure ports.When the pressure of feed pathway and pressure ports is less than the first setting value, pressure regulator valve cuts out, and liquid enters oil hydraulic cylinder by feed pathway.When the pressure of feed pathway and pressure ports reaches the first setting value, pressure regulator valve is opened, and partially liq enters fluid box by feed pathway, thus reduces the hydraulic pressure in feed pathway.When hydraulic pressure be again reduced to be less than the first setting value time, pressure regulator valve close.Ensure that stability hydraulic in feed pathway and can not more than the first setting value.
2, the pressure adjusting spring of pressure regulator valve comprises multi-disc disc spring, superimposed in the same way or oppositely superimposed or superimposed in the same way and reverse superimposed hybrid combining between multi-disc disc spring.Change the quantity of disc spring or the congruent manner of disc spring, pressure adjusting spring can be made to have different bearing capacitys and characteristic curve, thus multifarious adjustment can be carried out to the hydraulic pressure of oil hydraulic cylinder.
Accompanying drawing explanation
Fig. 1 is the structural representation of the hydraulic pressure pressure-regulating device of the utility model embodiment.
Fig. 2 is the plan view of the hydraulic pressure pressure-regulating device in Fig. 1.
Fig. 3 is the structure for amplifying schematic diagram of the pressure regulator valve of hydraulic pressure pressure-regulating device in Fig. 1.
Reference character
1-body, 11-liquid entering hole, 12-feed pathway, 13-pressure ports, 14-public passage, 15-liquid outlet, 16-return flow line, 161-first portion, 162-second portion, 17-connecting passage;
2-pressure regulator valve, 21-sealing block, 211-through hole, 22-adjusting pressuring valve core, 221-intercommunicating pore, 222-valve core rod, 23-pressure regulation valve rod, 24-pressure adjusting spring, 241,242,243-disc spring, 25-pressuring adjusting valve base, 26-adjusting pressuring handle, 27-space, 28-pressure regulation valve gap;
3-reflux valve, 31-refluxes valve rod, and 32-refluxes spool, and 33-refluxes valve gap, 34-flinger ring, and 35-refluxes handle;
4-safety valve, 41-pressure limiting part, 42-safety spring, the safe spool of 43-;
5-check valve, 51-check spring, 52-check valve core;
6-hydralic pressure gauge, 61-gauge stand, 62-measuring pressure passage, 63-joint.
Embodiment
Fig. 1 is the structural representation of the hydraulic pressure pressure-regulating device of the utility model embodiment, and Fig. 2 is the plan view of the hydraulic pressure pressure-regulating device in Fig. 1.As depicted in figs. 1 and 2, hydraulic pressure pressure-regulating device of the present utility model, for being connected the pressure to regulate the liquid entering described oil hydraulic cylinder from oil hydraulic pump with oil hydraulic pump (not shown) and oil hydraulic cylinder (not shown), specifically comprise body 1, pressure regulator valve 2 and reflux valve 3.In the present embodiment, hydraulic pressure pressure-regulating device also comprises safety valve 4.
Described body 1 is provided with liquid entering hole 11 for being communicated with described oil hydraulic pump and the feed pathway 12 communicated with described liquid entering hole 11 and pressure ports 13.In the present embodiment, as shown in Figure 1, body 1 is provided with the public passage 14 communicated with liquid entering hole 11, feed pathway 12 and pressure ports 13 communicate with public passage 14 respectively.In other embodiments, feed pathway 12 and pressure ports 13 also can communicate with liquid entering hole 11 respectively.
Described body 1 is also provided with for the liquid outlet 15 be communicated with fluid box and the return flow line 16 communicated with described liquid outlet 15, described return flow line 16 communicates with described feed pathway 12.Described body 1 is also provided with safety vent, and described safety vent communicates with described feed pathway 12.
Described pressure regulator valve 2 is arranged on described pressure ports 13, opens and allow liquid to flow back to the fluid box be connected with oil hydraulic pump from pressure ports 13 when the hydraulic pressure in described pressure ports 13 reaches the hydraulic pressure of setting.Because pressure ports 13 communicates with feed pathway 12, the hydraulic pressure of the two communicates.So pressure regulator valve 2 role is the pressure regulated in feed pathway 12, when the pressure of feed pathway 12 and pressure ports 13 is less than the first setting value, pressure regulator valve 2 cuts out, and liquid enters oil hydraulic cylinder by feed pathway 12.When the pressure of feed pathway 12 and pressure ports 13 reaches the first setting value, pressure regulator valve 2 is opened, and partially liq enters fluid box by feed pathway 12, thus reduces the hydraulic pressure in feed pathway 12.When hydraulic pressure be again reduced to be less than the first setting value time, pressure regulator valve 2 cuts out.So ensure that stability hydraulic in feed pathway 12 and can not more than the first setting value.
Described reflux valve 3 is arranged on described return flow line 16, and under the state that described reflux valve 3 is opened, liquid is flowed back in described fluid box (not shown) from oil hydraulic cylinder by return flow line 16.After the action of the piston of oil hydraulic cylinder completes, open reflux valve 3, make liquid flow back to fluid box by return flow line 16 and outlet, simultaneously piston reset.
Described safety valve 4 is arranged in described safety vent, and described safety valve 4 is opened when the hydraulic pressure of described feed pathway 12 exceedes Security alert value and liquid is flowed out from safety vent.Security alert value is determined by the safety spring 42 of the safety valve 4 adopted.Feed pathway 12 arranges safety valve 4 can prevent the hydraulic pressure in feed pathway 12 excessive, thus prevents the hydraulic pressure of oil hydraulic cylinder excessive and cause danger.
As specific embodiment, as shown in Figure 1, described body 1 is provided with the connecting passage 17 connecting described feed pathway 12 and safety vent, described safety valve 4 comprises the pressure limiting part 41 with inner chamber, described pressure limiting part 41 stretches into described safety vent at least partly and fixes with described safety vent, be provided with safety spring 42 in described inner chamber and stretch out the opening of described inner chamber and the safe spool 43 on described connecting passage 17 phase top in the promotion lower part of described safety spring 42, described safe spool 43 has the first conical seal (contact) face with the position on described connecting passage 17 phase top, described connecting passage 17 has with the position on described safe spool 43 phase top the secondary sealing area coordinated with the first conical seal (contact) face of described safe spool 43, in the present embodiment, safety spring 42 is disc spring.
In the present embodiment, the outer wall of described pressure limiting part 41 has outside thread, and the inwall of described safety vent has the internal thread be connected with the outside thread of described pressure limiting part 41.Certainly, in other embodiments, pressure limiting part 41 can be fixed with safety vent by other means.
Described feed pathway 12 is provided with check valve 5 and prevents liquid from flowing to oil hydraulic pump from oil hydraulic cylinder.When the hydraulic pressure of feed pathway 12 reaches the second setting value, check valve is opened, and liquid flows into oil hydraulic cylinder by feed pathway 12.Check valve is one-way valve, second setting value is far smaller than the first setting value, when the thrust of the pressure of the liquid in oil hydraulic cylinder and the check spring 51 of check valve is greater than the pressure of oil hydraulic pump, the check valve core 52 of check valve offsets with the inwall of feed pathway 12 and coordinates, check valve cuts out, and prevents the flow direction oil hydraulic pump in oil hydraulic cylinder.
Described check valve 5 is positioned at the upstream of the position that described feed pathway 12 communicates with described return flow line 16, when opening reflux valve 3, and the flow direction fluid box in oil hydraulic cylinder instead of flow to oil hydraulic pump.Described safety valve 4 is positioned at the upstream of described check valve 5, and when the hydraulic pressure in feed pathway 12 exceedes warning value, safety valve 4 can be opened in time.
As preferred scheme, described body 1 is provided with the regulator hole communicated with described pressure ports 13, described pressure regulator valve 2 is arranged in regulator hole, described pressure regulator valve 2 comprises sealing block 21, adjusting pressuring valve core 22 and pressure regulation valve rod 23, described sealing block 21 is positioned at the inner terminal of described regulator hole, the shape of sealing block 21 and the shape of regulator hole suitable, in the present embodiment, the cross section of regulator hole, safety vent and return port is circle.
The internal diameter of regulator hole is greater than the internal diameter of pressure ports 13, and under the pushing tow of adjusting pressuring valve core 22, the end of sealing block 21 and the end of described regulator hole offset.Described sealing block 21 outer wall is provided with the Sealing of the inner wall sealing making itself and described regulator hole, is specially back-up ring and seal ring.No matter sealing block 21 is the states of sliding in state of rest or relatively described regulator hole, is seal, prevents liquid from spilling from the gap between sealing block 21 and regulator hole between the outer wall of sealing block 21 and regulator hole.
Described sealing block 21 has through hole 211, and described through hole 211 one end can communicate with the end of described pressure ports 13, and the other end has the first sealing cone coordinated with described adjusting pressuring valve core 22.Described adjusting pressuring valve core 22 comprises the first portion with the second sealing cone coordinated with the first sealing cone and the second portion with intercommunicating pore 221, described intercommunicating pore 221 communicates with described fluid box, and under the state that described pressure regulator valve 2 is opened, described pressure ports 13 communicates with described intercommunicating pore 221.
More specifically, the inwall of adjusting pressuring valve core 22, sealing block 21 and regulator hole surrounds pressure regulation cavity, the intercommunicating pore 221 of sealing block 21 communicates with pressure regulation cavity, when departing from the cooperation in sealing block 21 under the effect of adjusting pressuring valve core 22 at hydraulic pressure, liquid enters pressure regulation cavity, thus enters intercommunicating pore 221 and flow to fluid box.
Pressure adjusting spring 24 one end and the described pressure regulation valve rod 23 of described pressure regulator valve 2 offset, and are specially, and one end of pressure adjusting spring 24 to be enclosed within pressure regulation valve rod 23 and by the direction pushing tow of the limit stoper on pressure regulation valve rod 23 to spool 22.The other end and the described adjusting pressuring valve core 22 of pressure adjusting spring 24 offset, be specially, the other end of pressure adjusting spring 24 is enclosed within the valve core rod 222 of adjusting pressuring valve core 22, and applies to make its first sealing cone and the second sealing cone of described sealing block 21 to offset the power coordinated to described adjusting pressuring valve core 22.Described pressure regulator valve 2 also comprises the pressuring adjusting valve base 25 be enclosed within pressure regulation valve rod 23, and pressuring adjusting valve base 25 and regulator hole are sealedly and fixedly connected.In the present embodiment, pressuring adjusting valve base 25 is connected with the internal thread of regulator hole by its outside thread, and pressure regulation valve rod 23 is connected by the internal thread of outside thread with pressuring adjusting valve base 25.The part that described pressure regulation valve rod 23 is exposed to described regulator hole outside is connected with adjusting pressuring handle 26, rotates adjusting pressuring handle 26 and pressure regulation valve rod 23 can be driven to rotate moving axially along valve rod simultaneously relative to pressuring adjusting valve base 25, thus pushing tow pressure adjusting spring 24.
In the present embodiment, pressure regulator valve also comprises pressure regulation valve gap 28, and as shown in Figure 3, pressure regulation valve gap 28 is connected with the outside thread of pressuring adjusting valve base 25 by its internal thread.The outside thread of pressuring adjusting valve base 25 compared with the internal thread of pressuring adjusting valve base 25, further from adjusting pressuring valve core 22, namely closer to adjusting pressuring handle 26.Pressure regulation valve gap 28 secures pressuring adjusting valve base 25 further, meanwhile, can prevent dust and water from being entered in liquid by pressuring adjusting valve base 25.
As preferably, described pressure adjusting spring 24 comprises multi-disc disc spring, as shown in Figure 3, and superimposed in the same way or oppositely superimposed or superimposed in the same way and reverse superimposed hybrid combining between multi-disc disc spring.In the present embodiment, the multi-disc disc spring 241 forming pressure adjusting spring one end is enclosed within one end of pressure regulation valve rod 23, the multi-disc disc spring 242 forming the pressure adjusting spring the other end is enclosed within the valve core rod 222 of spool 22, the multi-disc disc spring 243 formed in the middle part of pressure adjusting spring is sandwiched between disc spring 241 and disc spring 242, and multi-disc disc spring 243 has propped up a space 27 between the end of pressure regulation valve rod 23 and the end of valve core rod 222.Change the quantity of disc spring or the congruent manner of disc spring, pressure adjusting spring can be made to have different bearing capacitys and characteristic curve, thus multifarious adjustment can be carried out to the hydraulic pressure of oil hydraulic cylinder.
As preferred scheme, described body 1 is provided with the return port communicated with described return flow line 16, and described return flow line 16 is partitioned into orthogonal two-part by described return port.One end of first portion 161 communicates with described return port, and the other end communicates with described feed pathway 12.One end of second portion 162 communicates with described return port, and the other end communicates with described liquid outlet 15.One end that described first portion 161 communicates with described return port has the first conical seal (contact) face.
Described reflux valve 3 comprises backflow valve rod 31 and the backflow spool 32 be fixedly connected with described backflow valve rod 31 and the backflow valve gap 33 with described return flow line 16 fixed seal connection.Described backflow spool 32 has the second conical seal (contact) face matched with described primary sealing area under the pushing tow of described backflow valve rod 31, and when described reflux valve 3 is opened, described first portion 161 is communicated by described return port with second portion 162.Reflux valve 3 also comprises the backflow valve gap 33 be enclosed within described backflow valve rod 31, backflow valve gap 33 is connected with the end part seal of return port, prevent liquid leakage and prevent dust from entering reflux valve 3, in the present embodiment, backflow valve gap 33 is connected with the internal thread of return port by outside thread.
Described reflux valve 3 also comprises the flinger ring 34 be enclosed within described backflow valve rod 31, described flinger ring 34 is between described backflow valve gap 33 and described backflow spool 32, and the inner wall sealing of described flinger ring 34 and described return port also surrounds the backflow cavity of receiving fluids jointly with the inwall of described return port.
The part that backflow valve rod 31 is exposed to return port is also provided with backflow handle 35, swirling recirculation flow handle 35 can drive backflow valve rod 31 to rotate and move along the axis of backflow valve rod 31 simultaneously, drive backflow spool 32 depart from return flow line 16 or coordinate, thus open or closing volume valve 3.
Described hydraulic pressure pressure-regulating device also comprises hydralic pressure gauge 6, and as Fig. 1 and Fig. 2, the gauge stand 61 of described hydralic pressure gauge 6 has the measuring pressure passage 62 communicated with described feed pathway 12.The termination of described measuring pressure passage 62 is provided with the joint 63 for being communicated with fluid box, and in the present embodiment, joint 63 is ultrahigh pressure quick-acting joint 63.The hydraulic pressure that hydralic pressure gauge 6 records in fact also is the hydraulic pressure in oil hydraulic cylinder, and operator can be made to be well understood to hydraulic pressure situation of change in oil hydraulic cylinder.
Above embodiment is only exemplary embodiment of the present utility model, is not used in restriction the utility model, and protection domain of the present utility model is defined by the claims.Those skilled in the art are in essence of the present utility model and protection domain, and the various amendment make the utility model or equivalent replacement also drop in protection domain of the present utility model.
Claims (9)
1. a hydraulic pressure pressure-regulating device, for being connected the pressure to regulate the liquid entering described oil hydraulic cylinder with oil hydraulic pump and oil hydraulic cylinder, is characterized in that, comprising:
Body, described body is provided with liquid entering hole for being communicated with described oil hydraulic pump and the feed pathway communicated with described liquid entering hole and pressure ports, described body is also provided with for the liquid outlet be communicated with fluid box and the return flow line communicated with described liquid outlet, described return flow line communicates with described feed pathway;
Pressure regulator valve, opens when the described pressure regulator valve hydraulic pressure be arranged on described pressure ports in described pressure ports reaches the hydraulic pressure of setting and allows liquid to flow back to the fluid box be connected with oil hydraulic pump from pressure ports;
Reflux valve, described reflux valve is arranged on described return flow line, and under the state that described reflux valve is opened, liquid is flowed back in described fluid box from oil hydraulic cylinder by return flow line.
2. hydraulic pressure pressure-regulating device according to claim 1, it is characterized in that, described body is provided with the regulator hole communicated with described pressure ports, described pressure regulator valve is arranged in regulator hole, pressure regulator valve of telling comprises sealing block, adjusting pressuring valve core, pressure regulation valve rod and pressure adjusting spring, described sealing block is positioned at the inner terminal of described regulator hole, described sealing block outer wall is provided with the Sealing of the inner wall sealing making itself and described regulator hole, described sealing block has through hole, described through hole one end can communicate with the end of described pressure ports, the other end has the first sealing cone coordinated with described adjusting pressuring valve core, described adjusting pressuring valve core comprises the first portion with the second sealing cone coordinated with described first sealing cone and the second portion with intercommunicating pore, described intercommunicating pore communicates with described fluid box, under the state that described pressure regulator valve is opened, described pressure ports communicates with described intercommunicating pore, described pressure adjusting spring applies to make its second sealing cone and the first sealing cone of described sealing block to offset the power coordinated to described adjusting pressuring valve core under the pushing tow of described pressure regulation valve rod.
3. hydraulic pressure pressure-regulating device according to claim 2, it is characterized in that, described pressure adjusting spring comprises multi-disc disc spring, superimposed in the same way or oppositely superimposed or superimposed in the same way and reverse superimposed hybrid combining between multi-disc disc spring, one end of pressure regulation valve rod is enclosed within described in the multi-disc disc spring forming described pressure adjusting spring one end, the multi-disc disc spring forming the described pressure adjusting spring the other end is enclosed within the valve core rod of described spool, and the multi-disc disc spring formed in the middle part of described pressure adjusting spring has propped up a space between the end and the end of described valve core rod of described pressure regulation valve rod.
4. hydraulic pressure pressure-regulating device according to claim 3, it is characterized in that, described pressure regulator valve also comprises pressuring adjusting valve base, described pressuring adjusting valve base and described regulator hole are sealedly and fixedly connected, described pressure regulation valve rod is connected by the internal thread of outside thread with described pressuring adjusting valve base, and described pressure adjusting spring to be enclosed within described pressure regulation valve rod and by the direction pushing tow of the limit stoper on described pressure regulation valve rod to spool.
5. hydraulic pressure pressure-regulating device according to claim 1, it is characterized in that, described body is provided with the return port communicated with described return flow line, described return flow line is partitioned into two-part by described return port, one end of first portion communicates with described return port, the other end communicates with described feed pathway, one end of second portion communicates with described return port, the other end communicates with described liquid outlet, one end that described first portion communicates with described return port has the first conical seal (contact) face, described reflux valve comprises backflow valve rod and the backflow spool be fixedly connected with described backflow valve rod and the backflow valve gap with the fixed seal connection of described return flow line, described backflow spool has the second conical seal (contact) face matched with the primary sealing area of described return port under the pushing tow of described backflow valve rod, when described reflux valve is opened, described first portion is communicated by described return port with second portion, described backflow valve gap is enclosed within described backflow valve rod, and described backflow valve rod by its outside thread with the internal thread of described backflow valve gap be connected.
6. hydraulic pressure pressure-regulating device according to claim 5, it is characterized in that, described reflux valve also comprises the flinger ring be enclosed within described backflow valve rod, described flinger ring is between described backflow valve gap and described backflow spool, and the inner wall sealing of described flinger ring and described return port also surrounds the backflow cavity of receiving fluids jointly with the inwall of described return port.
7. hydraulic pressure pressure-regulating device according to claim 2, is characterized in that, described feed pathway is provided with check valve and prevents liquid from flowing to oil hydraulic pump from oil hydraulic cylinder.
8. hydraulic pressure pressure-regulating device according to claim 2, is characterized in that, described check valve is positioned at the upstream of the position that described feed pathway communicates with described return flow line.
9. hydraulic pressure pressure-regulating device according to claim 1, it is characterized in that, hydraulic pressure pressure-regulating device according to claim 1, it is characterized in that, described hydraulic pressure pressure-regulating device also comprises hydralic pressure gauge, the gauge stand of described hydralic pressure gauge has the measuring pressure passage communicated with described feed pathway, and the termination of described measuring pressure passage is provided with the joint for being communicated with fluid box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520893310.0U CN205136171U (en) | 2015-11-10 | 2015-11-10 | Hydraulic pressure pressure regulating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520893310.0U CN205136171U (en) | 2015-11-10 | 2015-11-10 | Hydraulic pressure pressure regulating device |
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| CN205136171U true CN205136171U (en) | 2016-04-06 |
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| CN201520893310.0U Active CN205136171U (en) | 2015-11-10 | 2015-11-10 | Hydraulic pressure pressure regulating device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757029A (en) * | 2016-05-03 | 2016-07-13 | 胡和萍 | Pressure controlling regulator for hydraulic air cylinder |
| CN111565816A (en) * | 2017-12-21 | 2020-08-21 | 康明斯滤清系统知识产权公司 | TRV stop valve |
-
2015
- 2015-11-10 CN CN201520893310.0U patent/CN205136171U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757029A (en) * | 2016-05-03 | 2016-07-13 | 胡和萍 | Pressure controlling regulator for hydraulic air cylinder |
| CN111565816A (en) * | 2017-12-21 | 2020-08-21 | 康明斯滤清系统知识产权公司 | TRV stop valve |
| CN111565816B (en) * | 2017-12-21 | 2022-01-21 | 康明斯滤清系统知识产权公司 | TRV stop valve |
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