CN203463278U - Combination valve - Google Patents
Combination valve Download PDFInfo
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- CN203463278U CN203463278U CN201320607656.0U CN201320607656U CN203463278U CN 203463278 U CN203463278 U CN 203463278U CN 201320607656 U CN201320607656 U CN 201320607656U CN 203463278 U CN203463278 U CN 203463278U
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- spool
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- 238000012423 maintenance Methods 0.000 abstract description 4
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- 239000012530 fluid Substances 0.000 description 8
- 230000006872 improvement Effects 0.000 description 6
- 238000010030 laminating Methods 0.000 description 4
- 238000005213 imbibition Methods 0.000 description 3
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- 230000000903 blocking effect Effects 0.000 description 2
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Abstract
The utility model discloses a combination valve which comprises a valve seat with a built-in pipeline and a spool arranged in the valve seat. The combination valve is characterized in that the valve seat further comprises a liquid input portion with a built-in liquid input structure and a liquid discharging portion with a built-in liquid discharging structure, the liquid input structure is communicated with the liquid discharging structure, an ejecting mechanism for unloading the liquid input portion is further arranged on the liquid input portion, and a plunger driven by a motor to perform reciprocating movement to change the volume of a cavity of the liquid discharging portion is further arranged on the liquid discharging portion. By the adoption of the structure of the combination valve, the ejecting mechanism is operated to open and close to achieve normal work and unloading of a reciprocating pump. Therefore, according to the combination valve pipelines and unloading valves do not need to be additionally arranged to achieve unloading of the reciprocating pumps, device cost and maintenance cost are low, meanwhile opening and closing frequencies of the valves are reduced, and the service lives of the valves are prolonged.
Description
Technical field
The utility model relates to a kind of valve technology field, is specially the combination brake switch and proporting of using on a kind of automotive reciprocating pump.
Background technique
At present, general automotive reciprocating pump is comprised of prime mover, transmission device, power end, fluid end, its fluid end generally comprises the pump housing, some pump of plunger < is piston > and is arranged on suction valve and the expulsion valve in the pump housing, and the described pump housing plunger hole that is provided with suction port, exhaust port and is used for installing plunger.The valve seat that is provided with pump chamber in the described pump housing and there is leading role, described valve seat has two to suck valve seat and discharge valve seat, and they are separately fixed at the two ends of pump chamber in the pump housing.The working principle of above-mentioned automotive reciprocating pump is: when the motion of pump chamber direction is left by plunger court, the volume of pump chamber can increase gradually, now the liquid medium in suction port is automatically opened suction valve under the effect of hydraulic power, and expulsion valve auto-closing under the effect of hydraulic power.When plunger moves towards the direction near pump chamber, suction valve is auto-closing under hydraulic power effect, and liquid medium in pump chamber is opened expulsion valve under the extruding of plunger, and discharge by exhaust port, automotive reciprocating pump has just completed a work cycle like this, and under the to-and-fro motion of plunger, pump can constantly repeat above do action and the work that continues.
From the working principle of above-mentioned automotive reciprocating pump, be not difficult to find, as long as plunger is in to-and-fro motion, pump just has the liquid medium of capacity rating and discharges, and in theory, pump displacement is can not change along with the change of head pressure, be pump itself cannot no load running, as long as the motor of drive plunger motion does not stop, automotive reciprocating pump just has liquid medium and discharges.But in actual applications, some system being comprised of this class automotive reciprocating pump is in order to meet the periodically requirement of closure continually of its load needs, so these systems need automotive reciprocating pump to be operated in no load running state often.The motor of considering drive plunger motion does not allow start-stop frequently, therefore traditional way is to install pipeline and unloading valve additional between the suction port of the fluid end of the automotive reciprocating pump for these systems and exhaust port, when the load in system does not need high-pressure liquid medium like this, as long as the unloading valve of opening in pipeline just can allow liquid medium circulate, thereby realize the no load running of pump between pump intake and exhaust port; And load in system is while needing high-pressure liquid medium, as long as the unloading valve in blinding off a line just can make high-pressure liquid medium flow to load.Although this method can realize the no load running of automotive reciprocating pump, make automotive reciprocating pump there is unloading function, but still there are following three defects in it: 1, pump is under unloaded unloading condition, due to liquid ring or at circulating rolling ceaselessly, therefore, pump still requires the expenditure of energy; 2, pump is under unloaded unloading condition, because the suction valve in the pump housing and expulsion valve are still in work, therefore aggravated the wearing and tearing of suction valve and expulsion valve; 3, increase pipeline and unloading valve, not only increased the maintenance cost that equipment cost also increases pipeline and unloading valve simultaneously.
Summary of the invention
The technical problems to be solved in the utility model is, provide a kind of not only simple in structure, maintenance cost is low, and under unloaded unloading condition, liquid medium can be because circulating consumed energy, the combination brake switch and proporting with unloading function that suction valve and expulsion valve can not be worn because working on.
Technical solution of the present utility model is, provide a kind of combination brake switch and proporting with following structure: it comprises that inside is provided with the valve seat of pipeline and is located in the cavity of described valve seat makes described pipeline at connected state and the spool that blocks state conversion, described valve seat also comprises that inside is provided with feed liquor portion and the inner discharge opeing portion that is provided with drainage structure of feed liquor structure, described feed liquor structure is connected with drainage structure, in described feed liquor portion, be also provided with the liftout mechanism that makes the off-load of described feed liquor portion, in described discharge opeing portion, be also provided with the plunger that drives the reciprocating cavity volume that makes described discharge opeing portion to change by motor.
As a kind of improvement of the present utility model, described feed liquor structure and drainage structure refer to, in described feed liquor portion, be provided with the first cavity and the second cavity being interconnected by the first through hole, in described discharge opeing portion, be also provided with the 3rd cavity and the 4th cavity being interconnected by the second through hole, and described the first cavity is connected with liquid entering hole, described the 4th cavity is connected with liquid port; Described the second cavity and the 3rd cavity are connected by connecting tube, in described the second cavity, be provided with and make between the first cavity and the second cavity to be communicated with and to block the feed liquor spool of changing, in described the 4th cavity, be provided with and make between the 3rd cavity and the 4th cavity, to be communicated with and to block the discharge opeing spool of changing.By four cavitys of rational design, make structure more complete.
As a kind of improvement of the present utility model, in described the second cavity, be provided with and make to be communicated with the feed liquor spool of changing with sealing between the first cavity and the second cavity and refer to, in described the second cavity, be provided with a columniform feed liquor spool, described feed liquor spool is provided with near one end of the first through hole the seal disc that diameter is greater than the first through hole, between the other end of described feed liquor spool and feed liquor portion, by a Returnning spring, is fixedly connected with.By being set, a diameter is greater than the seal disc of the first through hole, can by the laminating with the first through hole and away from, realize the conversion of the connected sum sealing of the first cavity and the second cavity, a Returnning spring is set simultaneously, after seal disc is subject to fluid pressure and is backed down and realize two cavitys and be communicated with, can make described seal disc first through hole of again fitting by Returnning spring, realize sealing.
Further, described seal disc is provided with a directional post near a side of the first through hole, and described directional post coordinates with the first via clearance, and the outer peripheral surface of described directional post is provided with the guiding gutter that the first cavity and the second cavity are communicated with.By a directional post is set, can make the first through hole laminating accurately of described seal disc, prevent axial dislocation, cause sealing effect bad, and a guiding gutter is set, after making described seal disc away from the first through hole, by two cavitys of the normal connection of guiding gutter, the length of certain described guiding gutter must > described in the length of the first through hole, otherwise cannot realize the connection of two cavitys.
As another kind of improvement of the present utility model, in described the 4th cavity, be provided with and make to be communicated with the discharge opeing spool of changing with sealing between the 3rd cavity and the 4th cavity and refer to, in described the 4th cavity, be provided with a columniform discharge opeing spool, described discharge opeing spool is provided with near one end of the second through hole the seal disc that diameter is greater than the second through hole, between the other end of described discharge opeing spool and discharge opeing portion, by a Returnning spring, is fixedly connected with.Similarly, by being set, a diameter is greater than the seal disc of the second through hole, can by the laminating with the second through hole and away from, realize the conversion of the connected sum sealing of the 3rd cavity and the 4th cavity, a Returnning spring is set simultaneously, after seal disc is subject to fluid pressure and is backed down and realize two cavitys and be communicated with, can make described seal disc second through hole of again fitting by Returnning spring, realize sealing.
Further, described seal disc is provided with a directional post near a side of the second through hole, and described directional post coordinates with the second via clearance, and the outer peripheral surface of described directional post is provided with the guiding gutter that the 3rd cavity and the 4th cavity are communicated with.Similarly, by a directional post is set, can make the second through hole laminating accurately of described seal disc, prevent axial dislocation, cause sealing effect bad, and a guiding gutter is set, after making described seal disc away from the second through hole, by guiding gutter is normal, be communicated with two cavitys, the length of certain described guiding gutter must > described in the length of the second through hole, otherwise cannot realize the connection of two cavitys.
As a kind of preferred, in described the first cavity, be provided with the liftout mechanism of feed liquor spool in normally open referred to, described the first cavity slidably connects perpendicular to piston rod described feed liquor spool and that be connected with driving mechanism on the interior another side relative with feed liquor spool place one side.By driving mechanism, drive piston rod operation to back down feed liquor spool, thereby overcome Returnning spring for the effect of feed liquor spool, make between feed liquor spool and the first through hole always in away from state, thus, the first cavity and the second cavity are in normally open, and therefore, plunger is when front-rear reciprocation movement process, described liquid port and liquid entering hole are all directly communicated with, and reach the effect of the off-load of the pump housing.
As another kind of improvement of the present utility model, described plunger refers to, one end of described plunger is driven reciprocating by motor, and its other end stretches in the 3rd cavity of discharge opeing portion, and described plunger and the 3rd cavity are slidably matched and seal.
As last a kind of improvement of the present utility model, between described feed liquor portion and discharge opeing portion, be provided with a contiguous block, the left and right sides of described contiguous block is fixedly connected with discharge opeing portion with feed liquor portion respectively, is provided with and makes described connecting tube 6 be communicated with the through hole of the second cavity 3.3 and the 3rd cavity 4.2 in described contiguous block.By a contiguous block, connect two valve seats, be convenient to the processing of a plurality of cavitys of valve seat, be also convenient to the installation of spool simultaneously.
Adopt above structure, the utility model compared with prior art has the following advantages: by liftout mechanism effect and feed liquor spool, the first cavity, the second cavity, the 3rd cavity and the 4th cavity are directly communicated with, thus in the continual reciprocating situation of plunger, can realize the off-load of pump, the acting that liquid is not continued, has reduced the energy consumption that liquid medium flows and brings.While needing the utility model normal operation, only need to move liftout mechanism and depart from, the inlet valve and the outlet valve that can be used as normal reciprocating pump use.Therefore the off-load that the increase pipeline that the utility model need not be extra and unloading valve are realized reciprocating pump, equipment cost and maintenance cost are lower, have also reduced the on-off times of each valve simultaneously, and increased the working life of each valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of combination brake switch and proporting of the present utility model.
Fig. 2 is the structural representation that moves to a position of combination brake switch and proporting of the present utility model.
Fig. 3 is the schematic diagram of unloading condition of the present utility model.
Shown in figure: 1, valve seat, 2, spool, 2.1, feed liquor spool, 2.1.1, seal disc, 2.1.2, Returnning spring, 2.1.3, directional post, 2.1.4, guiding gutter, 2.2, discharge opeing spool, 2.2.1, seal disc, 2.2.2, Returnning spring, 2.2.3, directional post, 2.2.4, guiding gutter, 3, feed liquor portion, 3.1, the first through hole, 3.2, the first cavity, 3.3, the second cavity, 4, discharge opeing portion, 4.1, the second through hole, 4.2, the 3rd cavity, 4.3, the 4th cavity, 5, liquid entering hole, 6, liquid port, 7, connecting tube, 8, plunger, 9, piston rod, 10, contiguous block.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, combination brake switch and proporting of the present utility model, comprise and be positioned at the feed liquor portion 3 on right side and be positioned at left side discharge opeing portion 4, described feed liquor portion 3 is connected with discharge opeing portion 4, this connection can be to be fixedly connected with by screw, also can be flexibly connected by bearing, certainly described each joint is equipped with the seal ring of sealing use.In described feed liquor portion 3, be provided with the first cavity 3.2 and the second cavity 3.3 being interconnected by the first through hole 3.1, in described discharge opeing portion 4, be also provided with the 3rd cavity 4.2 and the 4th cavity 4.3 being interconnected by the second through hole 4.1, and described the first cavity 3.2 is connected with liquid entering hole 5, described the 4th cavity 4.3 is connected with liquid port 6, is provided with the connecting tube 7 that the second cavity 3.3 and the 3rd cavity 4.2 are communicated with in described feed liquor portion 3 and discharge opeing portion 4.Liquid can pass through successively liquid entering hole 5, the first cavity 3.2, the second cavity 3.3, connecting tube 7, the 3rd cavity 4.2, the 4th cavity 4.3, finally from liquid port 6, discharge thus.Above-mentioned connecting tube 7 is divided into two sections, be located at the pipeline in feed liquor portion and be located at the pipeline in discharge opeing portion, the two docking, and seal by O RunddichtringO, while being certainly rotationally connected by bearing between feed liquor portion 3 and discharge opeing portion 4 as described above, the interface end of this two-part connecting pipeline can be comprised of a pair of land, by the same circular groove of two, is fitted and is sealed the interface that forms connecting tube.
Described spool 2 comprises being located in described the second cavity 3.3, to make to be communicated with between the first cavity 3.2 and the second cavity 3.3 makes between the 3rd cavity 4.2 and the 4th cavity 4.3, to be communicated with and to seal the discharge opeing spool 2.2 of changing with blocking the feed liquor spool 2.1 of changing and be located in described the 4th cavity 4.3.The connection of above-mentioned indication refers to blocking change, and described each spool can move axially along the axis of through hole separately, when fitting with through hole, plays Truncation, when away from through hole described in through hole connection both sides cavity.In described the first cavity 3.2, be provided with and make the liftout mechanism of feed liquor spool 2.1 in normally open, described normally open be between fingering liquid spool 2.1 and the first through hole 3.1 all the time away from, guarantee between described the first cavity 3.2 and the second cavity 3.3 all the time in connected state.
In addition, in described the 3rd cavity 4.2, be provided with can to-and-fro motion for changing the plunger 8 of the 3rd cavity 4.2 volume size, described plunger 8 is connected with driving mechanism.When driving mechanism drives in plunger 8 to-and-fro motion processes, because the 3rd cavity 4.2 that stretches into of plunger 8 makes the smaller volume of cavity cause fluid pressure to raise.And, because feed liquor spool 2.1 is provided with near one end of the first through hole 3.1 the seal disc 2.1.1 that a diameter is greater than the first through hole 3.1, between the other end of described feed liquor spool 2.1 and feed liquor portion 3, by a Returnning spring 2.1.2, be fixedly connected with simultaneously, so be subject to the double action of hydraulic power and spring force, cause seal disc 2.1.1 to block and sealed the first through hole 3.1.Finally, hydraulic coupling overcomes the elastic force of Returnning spring 2.2.2 in discharge opeing spool 2.2 while increasing to a certain degree, back down discharge opeing spool 2.2, completes discharge opeing process.Volume due to cavity when should plunger 8 detaching the 3rd cavity 4.2 becomes large, fluid pressure declines, produce negative pressure, the seal disc 2.2.1 that the discharge opeing spool 2.2 that is now positioned at the 4th cavity 4.3 is greater than the second through hole 4.1 near the diameter of one end of the second through hole 4.1 is subject to the suction from the 3rd cavity 4.2, simultaneously owing to being fixedly connected on the elastic force effect of the Returnning spring 2.2.2 between discharge opeing spool 2.2 and discharge opeing portion 4, described seal disc 2.2.1 is adjacent to and has sealed the second through hole 4.1, therefore the negative pressure of liquid can only act on the second cavity 3.3 via connecting tube 7, therefore when described liquid negative pressure arrives to a certain degree, overcome the elastic force of the Returnning spring 2.1.2 of feed liquor spool 2.1, the first through hole 3.1 is communicated with, final liquid is via liquid entering hole 5, the first cavity 3.2, the first through hole 3.1 enters into the second cavity 3.3, complete imbibition process.
Further, in order to make seal disc 2.1.1 on described feed liquor spool 2.1 and the seal disc 2.2.1 on discharge opeing spool 2.2 all play good sealing effect, the close one end of through hole separately of described each seal disc is provided with a directional post, be the directional post 2.1.3 of feed liquor spool 2.1 and the directional post 2.2.3 of discharge opeing spool 2.2, described each directional post stretches into respectively in the first through hole 3.1 and the second through hole 4.1 separately, make thus in process that seal disc separately fits, its central axis is consistent, contraposition is more accurate, makes sealing effect better.Certainly due to each described directional post all with the more closely spaced contraposition that is slidably matched to reach accurate central axis of through hole separately, so in order to guarantee the connection of the cavity of described through hole both sides, on the outer peripheral surface of each described directional post, be equipped with guiding gutter.The length > of described guiding gutter is the length of through hole separately.As a kind of variation; described guiding gutter can be also to bore a hole on directional post; the core of its invention refers to the guiding of spool carrying out accurate axially locating; and make to arrange on described directional post guiding gutter for the connection when the through hole both sides cavity of seal disc during away from through hole; might as well no matter it is long strip groove; through hole, all in protection domain of the present utility model.Certain described seal disc must guarantee good sealing effect, thus, the conventional design that seal ring or flange etc. increase sealing effect can be set on seal disc.
In described first cavity 3.2 of above-mentioned indication, being provided with and making the liftout mechanism of feed liquor spool 2.1 in normally open can be in this wise, on described the first interior another side relative with feed liquor spool 2.1 place one sides of cavity 3.2, slidably connects perpendicular to piston rod 9 described feed liquor spool 2.1 and that be connected with driving mechanism.Particularly, scheming to arrange on the above the right flank of the first cavity one can the reciprocating piston rod 9 in left and right, and the to-and-fro motion of described piston rod 9 is by driven by motor.When reciprocating pump need to carry out off-load, make liquid stop circulation time, as long as piston rod 9 stretches in the first cavity 3.2, and through the first cavity 3.2, withstand the right side of feed liquor spool 2.1, further overcome the elastic force of the Returnning spring 2.1.2 of feed liquor spool 2.1, make feed liquor spool 2.1 side shifting of turning left.The seal disc 2.1.1 that its final effect is feed liquor spool 2.1, away from the first through hole 3.1, makes between the first cavity 3.2, the second cavity 3.3, connecting tube 7 all the time in connected state.Therefore in plunger 8 to-and-fro motion processes, the pressure in cavity does not change, so liquid do not circulate, in unloading condition.
Further, due to described feed liquor portion 3 with discharge opeing portion 4 is interior need to process a plurality of cavitys, pipeline and installation spool separately, no matter so difficulty of processing of valve seat, precision or cost are all relatively high, so, in specific embodiment of the utility model, provide a kind of so preferred, between described feed liquor portion 3 and discharge opeing portion 4, be provided with the contiguous block 10 of a connection use, the left and right sides of described contiguous block 10 is fixedly connected with discharge opeing portion 4 with feed liquor portion 3 respectively, certain described connection can be to be also flexibly connected, as long as described connection 7 can be passed through feed liquor portion 3, discharge opeing portion 4 and contiguous block 10 make to be communicated with between the second cavity 3.3 and the 3rd cavity 4.2.
Working principle of the present utility model is such: described liquid port is connected with Drainage pipe and input duct respectively with liquid entering hole, when needs reciprocating pump works, described piston rod shrinks and does not carry out work, now plunger detaches the 3rd cavity, make the smaller volume of the 3rd cavity, discharge opeing spool is subject to the elastic force of Returnning spring and the effect of liquid suction second through hole of fitting thus, make the second through hole sealing, be subject to being delivered to by connecting tube from the 3rd cavity the liquid suction of the second cavity simultaneously, the seal disc of described feed liquor spool overcomes the elastic force of Returnning spring toward moving away from the axial position of the first through hole, thereby make the first through hole be communicated with the first cavity and the second cavity, therefore liquid enters the 3rd cavity successively from liquid entering hole, complete imbibition process.When plunger stretches into the 3rd cavity, the smaller volume that makes the 3rd cavity, liquid is squeezed, and produces high pressure, now, feed liquor spool is subject to the high pressure of liquid and the elastic force of Returnning spring has well sealed the first through hole, therefore, and on whole fluid pressure effects and the seal disc of discharge opeing spool, make seal disc overcome the elastic force of Returnning spring, away from the second through hole, thereby the 3rd cavity and the 4th cavity are communicated with, have completed discharge opeing process.And when not needing reciprocating pump work, demand motive piston rod, make piston rod pass the first cavity, back down the seal disc of feed liquor spool, make the first cavity and the second cavity all the time in connected state, now, no matter how to-and-fro motion of plunger, because the 3rd cavity, connecting tube, the second cavity, the first cavity and liquid entering hole are communicated with successively, the pressure in cavity all can not change, therefore liquid does not have the process of imbibition and discharge opeing yet, reaches the effect of off-load.
In addition, the combination brake switch and proporting in the utility model is outer must be arranged in the described pump housing, therefore, the described pump housing only draws with empty frame in the drawings, and can clearly find out in the drawings between described each link and movable part to be to guarantee sealing, seal ring is all installed, at this, just not be described in detail.
The foregoing is only preferred embodiment of the present utility model, not for limiting protection domain of the present utility model.All within spirit of the present utility model and principle, any modification of doing, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. a combination brake switch and proporting, comprising that inside is provided with the valve seat of pipeline (1) and is located in the cavity of described valve seat (1) makes described pipeline at connected state and the spool (2) that blocks state conversion, it is characterized in that: described valve seat (1) also comprises that inside is provided with feed liquor portion (3) and the inner discharge opeing portion (4) that is provided with drainage structure of feed liquor structure, described feed liquor structure is connected with drainage structure, in described feed liquor portion (3), be also provided with the liftout mechanism that makes described feed liquor portion (3) off-load, in described discharge opeing portion (4), be also provided with the plunger (8) that drives the reciprocating cavity volume that makes described discharge opeing portion (4) to change by motor.
2. combination brake switch and proporting according to claim 1, it is characterized in that: described feed liquor structure and drainage structure refer to, in described feed liquor portion (3), be provided with the first cavity (3.2) and the second cavity (3.3) that by the first through hole (3.1), are interconnected, in described discharge opeing portion (4), be also provided with the 3rd cavity (4.2) and the 4th cavity (4.3) that by the second through hole (4.1), are interconnected, and described the first cavity (3.2) is connected with liquid entering hole (5), described the 4th cavity (4.3) is connected with liquid port (6); Described the second cavity (3.3) and the 3rd cavity (4.2) are connected by connecting tube (7), in described the second cavity (3.3), be provided with and make between the first cavity (3.2) and the second cavity (3.3) to be communicated with and to block the feed liquor spool (2.1) of changing, in described the 4th cavity (4.3), be provided with and make between the 3rd cavity (4.2) and the 4th cavity (4.3), to be communicated with and to block the discharge opeing spool (2.2) of changing.
3. combination brake switch and proporting according to claim 2, it is characterized in that: in described the second cavity (3.3), be provided with and make to be communicated with between the first cavity (3.2) and the second cavity (3.3) and block the feed liquor spool (2.1) of changing and refer to, in described the second cavity (3.3), be provided with a columniform feed liquor spool (2.1), described feed liquor spool (2.1) is provided with near one end of the first through hole (3.1) the seal disc (2.1.1) that diameter is greater than the first through hole (3.1), between the other end of described feed liquor spool (2.1) and feed liquor portion (3), by a Returnning spring (2.1.2), be fixedly connected with.
4. combination brake switch and proporting according to claim 3, it is characterized in that: described seal disc (2.1.1) is provided with a directional post (2.1.3) near a side of the first through hole (3.1), described directional post (2.1.3) coordinates with the first via clearance, and the outer peripheral surface of described directional post (2.1.3) is provided with the guiding gutter (2.1.4) that the first cavity (3.2) is communicated with the second cavity (3.3).
5. combination brake switch and proporting according to claim 2, it is characterized in that: (4.3) are provided with and make to be communicated with and to block the discharge opeing spool (2.2) of changing between the 3rd cavity (4.2) and the 4th cavity (4.3) to refer in described the 4th cavity, in described the 4th cavity (4.3), be provided with a columniform discharge opeing spool (2.2), described discharge opeing spool (2.2) is provided with near one end of the second through hole (4.1) the seal disc (2.2.1) that diameter is greater than the second through hole (4.1), between the other end of described discharge opeing spool (2.2) and discharge opeing portion (4), by a Returnning spring (2.2.2), be fixedly connected with.
6. combination brake switch and proporting according to claim 5, it is characterized in that: described seal disc (2.2.1) is provided with a directional post (2.2.3) near a side of the second through hole (4.1), described directional post (2.2.3) and the second through hole (4.1) Spielpassung, the outer peripheral surface of described directional post (2.2.3) is provided with the guiding gutter (2.2.4) that the 3rd cavity (4.2) and the 4th cavity (4.3) are communicated with.
7. combination brake switch and proporting according to claim 2, it is characterized in that: in described feed liquor portion (3), be also provided with the liftout mechanism of described feed liquor structure off-load is referred to, described the first cavity (3.2) slidably connects perpendicular to piston rod described feed liquor spool (2.1) and that be connected with driving mechanism (9) on the interior another side relative with feed liquor spool (2.1) place one side.
8. combination brake switch and proporting according to claim 2, it is characterized in that: described plunger (8) refers to, one end of described plunger (8) drives reciprocating by motor, its the other end stretches in the 3rd cavity (4.2) of discharge opeing portion (4), and described plunger (8) is slidably matched and seals with the 3rd cavity (4.2).
9. combination brake switch and proporting according to claim 2, it is characterized in that: between described feed liquor portion (3) and discharge opeing portion (4), be provided with a contiguous block (10), the left and right sides of described contiguous block (10) is fixedly connected with discharge opeing portion (4) with feed liquor portion (3) respectively, is provided with the through hole that makes described connecting tube (7) be communicated with the second cavity (3.3) and the 3rd cavity (4.2) in described contiguous block (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607656.0U CN203463278U (en) | 2013-09-28 | 2013-09-28 | Combination valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607656.0U CN203463278U (en) | 2013-09-28 | 2013-09-28 | Combination valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463278U true CN203463278U (en) | 2014-03-05 |
Family
ID=50175647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320607656.0U Withdrawn - After Issue CN203463278U (en) | 2013-09-28 | 2013-09-28 | Combination valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463278U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486019A (en) * | 2013-09-28 | 2014-01-01 | 宁波大隆机器制造有限公司 | Combination valve |
| CN105952633A (en) * | 2016-07-07 | 2016-09-21 | 天津市海盛泵业制造有限公司 | Straight-through combination valve applied to high-pressure reciprocation plunger pump hydraulic end |
-
2013
- 2013-09-28 CN CN201320607656.0U patent/CN203463278U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486019A (en) * | 2013-09-28 | 2014-01-01 | 宁波大隆机器制造有限公司 | Combination valve |
| CN103486019B (en) * | 2013-09-28 | 2015-09-09 | 宁波大隆机器制造有限公司 | Combination brake switch and proporting |
| CN105952633A (en) * | 2016-07-07 | 2016-09-21 | 天津市海盛泵业制造有限公司 | Straight-through combination valve applied to high-pressure reciprocation plunger pump hydraulic end |
| CN105952633B (en) * | 2016-07-07 | 2017-10-10 | 天津市海盛泵业制造有限公司 | A kind of high pressure reciprocating plunger pump hydraulic end through type combination valve |
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Granted publication date: 20140305 Effective date of abandoning: 20150909 |
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| AV01 | Patent right actively abandoned |
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| RGAV | Abandon patent right to avoid regrant |