CN203757116U - Proportional valve - Google Patents

Abstract

The utility model discloses a proportional valve. The proportional valve comprises a valve body, a valve cover, a spring plate, an elastic piece and a valve element assembly. The valve body is provided with an air inlet and an air outlet. The valve cover is arranged in the valve body so as to open or close the air outlet. The spring plate is arranged in the valve body, and the valve cover is arranged on the spring plate. The elastic piece is connected with the spring plate to drive the spring plate to move towards the air outlet to enable the valve cover to close the air outlet. The valve element assembly is arranged in the valve body and connected to the spring plate, the valve element assembly has the operating state and the stopping state, and in the operating state, the valve element assembly drives the spring plate to move in the direction away from the air outlet. According to the proportional valve, flowing resistance and starting and stopping force are reduced, and therefore the proportional valve is low in cost, fast in response, low in energy consumption, high in reliability and capable of being used when the gas pressure is large. Due to the fact that the valve cover is not affected by the temperature change, vibration, inclination and other situations, the control precision of the proportional valve is high, and the proportional valve can be applied to precise control equipment.

Description

Proportional valve

Technical field

The utility model relates to valve field, especially relates to a kind of Proportional valve.

Background technique

In correlation technique, disclosed Proportional valve adopts seal membrane conventionally, and regulates the distance between seal membrane and valve port by hydrodynamic reciprocating sealing diaphragm, thereby realizes Flow-rate adjustment.Wherein, the amount of movement of seal membrane depends on the amount of deformation of seal membrane completely, and when Proportional valve, to run into temperature variation larger, or when the situation such as vibrations, inclination, the repeatable position precision of Proportional valve is poor, causes accurately controlling gas flow.And, cross conference and make the stressed excessive an ancient egg-shaped, holed wind instrument that causes of seal membrane bad due to gas pressure, therefore use the Proportional valve of seal membrane also not allow to use in the larger occasion of pressure.In addition, because seal membrane is rubber parts, therefore the valve closing response time longer, cannot meet the requirement of quick response.

Model utility content

The utility model is intended at least solve the technical problem existing in prior art.For this reason, the purpose of this utility model is to provide a kind of Proportional valve, and the response of this Proportional valve is fast, and control accuracy is high, and be not subject to temperature variation, the impact of the problem such as vibrations and inclination, gas pressure are excessive.

According to Proportional valve of the present utility model, comprising: valve body, described valve body has suction port and air outlet; Valve gap, described valve gap is located in described valve body to open or close described air outlet; Latch plate, described latch plate is located in described valve body, and described valve gap is located on described latch plate; Elastic component, described elastic component is connected often to drive described latch plate to move to make described valve gap to close described air outlet to described air outlet with described latch plate; Mangetic core assembly, described mangetic core assembly is located in described valve body and described mangetic core assembly is connected to described latch plate, wherein said mangetic core assembly has running state and halted state, in described running state, described mangetic core assembly is configured to drive described latch plate along moving away from the direction of described air outlet.

According to Proportional valve of the present utility model, by latch plate and valve gap are set, make latch plate after stress deformation, can drive valve gap to seal air outlet completely, thereby the flow resistance of Proportional valve and hoisting capacity are reduced, and then make that Proportional valve cost is low, response is fast, energy consumption is low, reliability is high.Due to the strength of latch plate more greatly, not fragile, therefore Proportional valve also can use in the time that gas pressure is larger.Not affected by the situations such as temperature variation, vibrations and inclination, thereby make the control accuracy of Proportional valve higher, therefore may be used in accurate control apparatus.

In addition, also can there is following additional technical feature according to Proportional valve of the present utility model:

In embodiments more of the present utility model, described valve gap is metalwork, and the plane that described valve gap contacts with described air outlet is abrasive machining face.Thereby make can form tight sealing surface between valve gap and air outlet, and then ensure Proportional valve response fast.Because valve gap is metalwork, therefore can extend the working life of Proportional valve simultaneously.

In embodiments more of the present utility model, described mangetic core assembly comprises: coil, and described coil is located on the diapire of described valve body; Magnetic core, the first end of described magnetic core is located on the diapire of described valve body, is enclosed within described coil in described magnetic core, is provided with mobile chamber in described magnetic core; Live axle, described live axle is located at movably described mobile cavity one end indoor and described live axle and stretches out described mobile chamber, and one end of stretching out described mobile chamber of described live axle is connected to described latch plate; Armature, described armature is enclosed within outward on one end of stretching out described mobile chamber of described live axle, and wherein in described running state, described armature is mobile to drive described live axle along moving away from the direction of described air outlet under the suction of described magnetic core.Thereby pass into the size of the electric current of coil by change, can realize the precision control of the gas flow of passing ratio valve.

Particularly, described elastic component is spring, and described elastic component to be located at described mobile cavity indoor, the two ends of described elastic component are only against respectively on the inwall of described live axle and described mobile chamber.Thus, can be convenient to the assembling of elastic component and the rational deployment of Proportional valve internal structure.

Further, Proportional valve also comprises the adjustment piece of the amount of deformation for adjusting described elastic component, and it is indoor so that described elastic component is only against on described adjustment piece that described adjustment piece extend into described mobile cavity.Thereby can be by adjusting the position of adjustment piece, adjust elastic component the impacting force that imposes on latch plate.

Further, Proportional valve also comprises guiding seat, and described guiding seat is located on the inwall of described valve body, and described guiding seat is enclosed within outward on described live axle.Thereby avoid causing because live axle is long bent propeller shat, and then ensure the control accuracy of Proportional valve.

Preferably, Proportional valve also comprises linear bearing, between described guiding seat and described live axle, is connected by described linear bearing.Thus, can realize accurate guiding, guarantee the positional accuracy of the relative air outlet of valve gap, thereby realized the linear relationship of the displacement distance of current value and valve gap, and then guarantee the control accuracy of Proportional valve.

In a concrete example of the present utility model, Proportional valve also comprises the first Sealing, and described the first Sealing is located between the inwall of described guiding seat and the outer wall of described live axle.Thereby ensure that the gas in gas chamber does not leak.

In specific embodiments more of the present utility model, described live axle comprises: push rod, and it is indoor that described push rod is located at described mobile cavity movably; Connecting rod, the first end of described connecting rod is connected with the first end of described push rod, and described armature is enclosed within outward on described connecting rod; The axis of guide, the first end of the described axis of guide is connected with the second end of described connecting rod, and the second end of the described axis of guide is connected with described latch plate.

Further, described mangetic core assembly also comprises connection bracket, and described connection bracket is located on one end of stretching out described mobile chamber of described live axle, and described latch plate is located in described connection bracket.

Further, Proportional valve also comprises positioning ring, and described positioning ring is located on the inwall of described valve body, and described positioning ring is enclosed within outward on the second end of described magnetic core.Thereby improve the steadiness that magnetic core connects.

Particularly, described positioning ring comprises the first subring and the second subring, and described the first subring is fixed on described valve body, and described the first subring is enclosed within outward in described the second subring, and described the second subring is enclosed within outward on described magnetic core.

Alternatively, described latch plate is enclosed within outward on described valve gap.Thereby make to be connected between valve gap and latch plate simple, reliable.

In embodiments more of the present utility model, Proportional valve also comprises: suction tude, and a part for the periphery wall of described suction tude coordinates with the inner circle wall of described suction port; Valve port pipe, the periphery wall of described valve port pipe coordinates with the inner circle wall of described air outlet; Steam outlet pipe, a part for the periphery wall of described steam outlet pipe coordinates with the inner circle wall of described valve port pipe.

Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.

Brief description of the drawings

Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming embodiment's description obviously and easily, wherein:

Fig. 1 is according to the cross-sectional schematic of the utility model embodiment's Proportional valve;

Fig. 2 is the enlarged view that Fig. 1 centre circle shows A portion;

Fig. 3 is the enlarged view that Fig. 1 centre circle shows B portion;

Fig. 4-Fig. 5 is according to the structural representation of the different visual angles of the utility model embodiment's Proportional valve.

Reference character:

Proportional valve 100,

Valve body 1, suction port 11, air outlet 12, gas chamber 13, accommodating chamber 14, mounting hole 15,

The first sub-valve body 101, the second sub-valve body 102, the 3rd sub-valve body 103, suction tude 104, steam outlet pipe 105, valve port pipe 106,

Valve gap 2, lid 21, cover plate 22, connecting plate 23, nut 24, packing ring 25, the first plane 26,

Latch plate 31, attachment hole 311, elastic component 32, spring 32a, adjustment piece 33, adjust screw 33a, threaded fastener 34,

The first end 421 of mangetic core assembly 4, coil 41, magnetic core 42, magnetic core, the second end 422 of magnetic core, mobile chamber 423, through hole 424, armature 43, connection bracket 44, dunnage 441, claw 442, fixed hole 443,

The first end 531 of the first end 521 of the first end 511 of live axle 5, push rod 51, push rod, the second end 512 of push rod, hemisphere face 513, the first snap ring 514, connecting rod 52, connecting rod, the second end 522 of connecting rod, reentrant part 523, the second snap ring 524, the axis of guide 53, the axis of guide, the second end 532 of the axis of guide, the first tapped hole 533, the second tapped hole 534,

Positioning ring 6, the first subring 61, the second subring 62,

The first Sealing 71, the second Sealing 72, the 3rd Sealing 73,

Guiding seat 8, linear bearing 81

Embodiment

Describe embodiment of the present utility model below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment who is described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.

In description of the present utility model, it will be appreciated that, term " on ", orientation or the position relationship of the instruction such as D score, " vertically ", " level ", " top ", " end ", " interior ", " outward ", " radially ", " axially ", " circumferentially " be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, construct and operation with specific orientation, therefore can not be interpreted as restriction of the present utility model.

In addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.

Describe according to the utility model embodiment's Proportional valve 100 below with reference to Fig. 1-Fig. 5.

According to the utility model embodiment's Proportional valve 100, as shown in Figure 1, comprising: valve body 1, valve gap 2, latch plate 31, elastic component 32 and mangetic core assembly 4.

Wherein, valve body 1 has suction port 11 and air outlet 12, valve gap 2 is located in valve body 1 to open or close air outlet 12, latch plate 31 is located in valve body 1, and valve gap 2 is located on latch plate 31, elastic component 32 is connected and moves to make valve gap 2 to close air outlet 12 with normal driving spring plate 31 to air outlet 12 with latch plate 31.Here, " often " refers to the state of triggering.Mangetic core assembly 4 is located in valve body 1 and mangetic core assembly 4 is connected to latch plate 31, and wherein mangetic core assembly 4 has running state and halted state, and in running state, mangetic core assembly 4 is configured to driving spring plate 31 along moving away from the direction of air outlet 12.

Here it should be noted that, in description of the present utility model, unless otherwise clearly defined and limited, term " is connected ", " connection ", " installation ", " fixing " should be interpreted broadly, for example, can be to be fixedly connected with, can be also removably connect or connect integratedly; Can be that mechanical connection can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.

Particularly, as shown in Figure 1, valve body 1 limits gas chamber 13, and suction port 11 and air outlet 12 are communicated with gas chamber 13 respectively.Valve gap 2 is all located in gas chamber 13 with latch plate 31, and wherein, valve gap 2 just arranges air outlet 12.Elastic component 32 is connected with valve gap 2 by latch plate 31, and elastic component 32 imposes on the elastic force of latch plate 31 towards air outlet 12 directions, thereby normal driving spring plate 31 moves towards air outlet 12.Under the halted state of mangetic core assembly 4, this elastic force driving spring plate 31 moves to air outlet 12 so that valve gap 2 is closed air outlet 12, under the running state of mangetic core assembly 4, mangetic core assembly 4 imposes on the driving force of latch plate 31 away from air outlet 12, in the time that this driving force overcomes the elastic force of elastic component 32, make latch plate 31 towards moving so that valve gap 2 is opened air outlet 12 away from the direction of air outlet 12.

Thus, in the working procedure of Proportional valve 100, can regulate the distance between valve gap 2 and air outlet 12 by mobile spring plate 31, thereby can change the flow of the gas of passing ratio valve 100.In other words, gas enters in gas chamber 13 by suction port 11, and enter air outlet 12 by the gap between valve gap 2 and air outlet 12, the size in the gap between valve gap 2 and air outlet 12 can change along with the movement of latch plate 31 in gas chamber 13, thereby can reach the function of controlling gas flow.

For example in the example depicted in fig. 1, air outlet 12 is located on the roof of gas chamber 13, valve gap 2 is located at the below of air outlet 12, and the first plane 26 of valve gap 2 coordinates to open or close air outlet 12 with air outlet 12, and latch plate 31 can be located in gas chamber 13 up or down.In the time that elastic component 32 driving spring plates 31 move up, gap between valve gap 2 and air outlet 12 reduces, and in the time that mangetic core assembly 4 driving spring plates 31 move down, the gap between valve gap 2 and air outlet 12 increases, thus, the flow of the gas of passing ratio valve 100 can change.

Wherein, manufacture because the each component of Proportional valve 100 exist, assembling equal error, make the first plane 26 of valve gap 2 and the end face towards valve gap 2 of air outlet 12 cannot keeping parallelism and cannot fit completely.Therefore, the utility model embodiment's Proportional valve 100 is by being provided with latch plate 31 to address the above problem, particularly, when elastic component 32 driving spring plates 31 move up so that valve gap 2 while closing air outlet 12, the first plane 26 of valve gap 2 first contacts with the end face origination point towards valve gap 2 of air outlet 12, afterwards, along with the continuation of latch plate 31 is moved, latch plate 31 is subject to the impact of the resistance of the elastic force of elastic component 32 and the end face towards valve gap 2 of air outlet 12 simultaneously, make latch plate 31 that resiliently deformable occur and drive valve gap 2 to rotate, thereby the first plane 26 of valve gap 2 can be fitted completely with the end face towards valve gap 2 of air outlet 12.Thus, valve gap 2 can seal air outlet 12 completely, thereby improves sealing, the reliability of Proportional valve 100.

Due to the effect of latch plate 31, make elastic component 32 impose on the elastic force that latch plate 31 is less and can make valve gap 2 seal air outlet 12, therefore, in the time that needs are opened air outlet 12, the required driving force applying of mangetic core assembly 4 is also less.Thus, flow resistance and the hoisting capacity of Proportional valve 100 all reduce, thereby have improved the speed of response of Proportional valve 100, have also reduced the energy loss of Proportional valve 100.And because the strength of latch plate 31 is larger, when the hoisting capacity that makes more greatly Proportional valve 100 need when gas pressure is larger, latch plate 31 is not fragile yet, thus, Proportional valve 100 also can use in the situation that pressure is larger.

Owing to adopting valve gap 2 to seal air outlet 12, and in the situations such as, vibrations large in temperature variation and inclination, 2 of valve gaps are influenced less, thereby under the not high prerequisite of Proportional valve 100 costs, make the control accuracy of Proportional valve 100 higher, therefore Proportional valve 100 may be used in the accurate equipment of controlling gas flow.For example, Proportional valve 100 may be used in respiratory machine, to realize patient's the precision control of clinical tidal volume.

According to the utility model embodiment's Proportional valve 100, by latch plate 31 and valve gap 2 are set, make latch plate 31 after stress deformation, can drive valve gap 2 to seal air outlet 12 completely, thereby the flow resistance of Proportional valve 100 and hoisting capacity are reduced, and then make that Proportional valve 100 costs are low, response is fast, energy consumption is low, reliability is high.Due to the strength of latch plate 31 more greatly, not fragile, therefore Proportional valve 100 also can use in the time that gas pressure is larger.Not affected by the situations such as temperature variation, vibrations and inclination, thereby make the control accuracy of Proportional valve 100 higher, therefore may be used in accurate control apparatus.

In embodiments more of the present utility model, as shown in Figure 1-Figure 3, mangetic core assembly 4 comprises coil 41, magnetic core 42, live axle 5 and armature 43.

Wherein, coil 41 is located on the diapire of valve body 1, the first end 421 of magnetic core 42 is located on the diapire of valve body 1, magnetic core 42 inner sleeves are in coil 41, in magnetic core 42, be provided with mobile chamber 423, live axle 5 is located in mobile chamber 423 movably, and one end of live axle 5 stretches out mobile chamber 423, and one end of stretching out mobile chamber 423 of live axle 5 is connected to latch plate 31.Particularly, the roof of magnetic core 42 is provided with the through hole 424 of the roof that connects magnetic core 42, and live axle 5 stretches out from through hole 424.

Armature 43 is outer to be enclosed within on one end of the mobile chamber 423 of stretching out of live axle 5, and wherein in running state, armature 43 is mobile to drive live axle 5 along moving away from the direction of air outlet 12 under the suction of magnetic core 42.

Particularly, as shown in figures 1 and 3, armature 43 is fixed on live axle 5, one end linking springs plate 31 of live axle 5, and coil 41 is positioned at the side away from air outlet 12 of armature 43.In the time that coil 41 is switched on, coil 41 coordinates magnetic core 42 to produce stable magnetic field, and armature 43 is subject to the magnetic attraction proportional with coil 41 size of current, and this attraction force is mangetic core assembly 4 and imposes on the driving force of latch plate 31 away from air outlet 12.

Along with the increase of coil 41 electric currents, attraction force increases gradually, and in the time that the size of attraction force is increased to the elastic force size of elastic component 32, attraction force drives valve gap 2 to detach gas port 12, and now suction port 11 is communicated with air outlet 12.If passing into the electric current of coil 41 continues to increase, the attraction force between coil 41 and armature 43 also continues to increase, make armature 43 continue to move down, drive valve gap 2 to move down thereby drive live axle 5 to move down in the process moving down at armature 43, that is to say that now this attraction force makes the gap between valve gap 2 and air outlet 12 continue to increase, and then the flow of the gas of passing ratio valve 100 is increased.Otherwise in the time passing into the electric current of coil 41 and reduce, the flow of the gas of passing ratio valve 100 also reduces.That is to say, the flow of the gas of passing ratio valve 100 is linear with the current value by coil 41, therefore, passes into the size of the electric current of coil 41 by change, can realize the precision control of the gas flow of passing ratio valve 100.

In a concrete example of the present utility model, as shown in Figure 1, valve body 1 also limits accommodating chamber 14, accommodating chamber 14 and gas chamber's 13 intervals settings, and coil 41, magnetic core 42 and armature 43 are all located in accommodating chamber 14.The diapire of valve body 1 is provided with mounting hole 15, and mounting hole 15 is communicated with accommodating chamber 14, and the first end 421 of magnetic core coordinates with mounting hole 15.

Further, as shown in Figure 1, Proportional valve 100 also comprises positioning ring 6, and positioning ring 6 is located on the inwall of valve body 1, and positioning ring 6 is outer to be enclosed within on the second end 422 of magnetic core 42, thereby improves the steadiness that magnetic core 42 connects.

Particularly, as shown in figures 1 and 3, positioning ring 6 comprises that the first subring 61 and the second subring 62, the first subrings 61 are fixed on valve body 1, outside the first subring 61, is enclosed within the second subring 62, outside the second subring 62, is enclosed within on magnetic core 42.

Further, as shown in Figure 1, elastic component 32 is spring 32a, and elastic component 32 is located in mobile chamber 423, and the two ends of elastic component 32 are only against respectively on the inwall of live axle 5 and mobile chamber 423.That is to say, elastic component 32 is connected with latch plate 31 by live axle 5, and now, elastic component 32 applies impacting force by live axle 5 to latch plate 31, thus, can be convenient to the assembling of elastic component 32 and the rational deployment of Proportional valve 100 internal structures.

Further, as shown in Figure 1, Proportional valve 100 also comprises the adjustment piece 33 of the amount of deformation for adjusting elastic component 32, adjustment piece 33 extend in mobile chamber 423 so that elastic component 32 is only against on adjustment piece 33, thereby can be by adjusting the position of adjustment piece 33, adjust elastic component 32 impacting force that imposes on latch plate 31.Thus, in the situation that gas pressure is definite, can makes the valve gap 2 just can effective sealing air outlet 12 by adjusting the impacting force of latch plate 31, thereby avoid latch plate 31 excessive to the active force of valve gap 2, and then it be excessive to avoid opening the power of air outlet 12.Therefore, can avoid the electric current of coil 41 excessive, thereby avoid unnecessary waste.

Particularly, as shown in Figure 1, magnetic core 42 is formed as cylindrical body substantially, and mobile chamber 423, from the end face of the first end 421 of magnetic core 42 to being recessed on, that is to say, the diapire of mobile chamber 423 opens wide.Between the perisporium of adjustment piece 33 and mobile chamber 423, be screw-thread fit, thereby be convenient to change the position of adjustment piece 33.More specifically, adjustment piece 33 is for adjusting screw 33a.

In embodiments more of the present utility model, as shown in Figure 1-Figure 3, live axle 5 comprises push rod 51, connecting rod 52 and the axis of guide 53, push rod 51 is located in mobile chamber 423 movably, the first end 521 of connecting rod 52 is connected with the first end 511 of push rod 51, and armature 43 is outer to be enclosed within on connecting rod 52, and the first end 531 of the axis of guide 53 is connected with the second end 522 of connecting rod 52, and the second end 532 of the axis of guide 53 is connected with latch plate 31.That is to say, the direction from coil 41 to air outlet 12, the order of connection of the composition member of live axle 5 is followed successively by: push rod 51, connecting rod 52 and the axis of guide 53.

Particularly, as shown in figures 1 and 3, the second end 512 of push rod 51 is supported on elastic component 32, and the first end 511 of push rod 51 stretches out from through hole 424.Wherein, the inner circle wall of through hole 424 can limit push rod 51 and moves up at upper and lower.Alternatively, as shown in Figure 1, push rod 51 is provided with the first snap ring 514, the first snap ring 514 stretches out along the radial direction of push rod 51 from the part periphery wall of push rod 51, in the bottom of push rod 51, be enclosed within spring 32a, it is upper that the lower surface of the first snap ring 514 is supported on spring 32a, thereby push rod 51 is connected on spring 32a.

More specifically, as shown in Figure 3, between the first end 511 of push rod 51 and the first end 521 of connecting rod 52 for face contacts, for example, the end face of the first end 511 of push rod 51 is formed as hemisphere face 513, on the end face of the first end 521 of connecting rod 52, have to the reentrant part 523 being recessed on, thereby reentrant part 523 matches and realizes being connected between push rod 51 and connecting rod 52 with hemisphere face 513.

Alternatively, as shown in Figure 3, connecting rod 52 is provided with the second snap ring 524, the second snap rings 524 and stretches out along the radial direction of connecting rod 52 from the part periphery wall of connecting rod 52, and the upper surface of armature 43 is connected with the lower surface of the second snap ring 524.

Alternatively, as shown in Figure 3, between the second end 522 of connecting rod 52 and the first end 531 of the axis of guide 53 for being threaded, in the example depicted in fig. 3, the outer circumferential face of the second end 522 of connecting rod 52 is flank of thread, and the end face of the first end 531 of the axis of guide 53 is provided with the first tapped hole 533 coordinating with it.

Further, as depicted in figs. 1 and 2, mangetic core assembly 4 also comprises connection bracket 44, and connection bracket 44 is located on one end of the mobile chamber 423 of stretching out of live axle 5, and latch plate 31 is located in connection bracket 44.Connection bracket 44 is connected with the second end 532 of the axis of guide 53, and live axle 5 is connected with latch plate 31 by connection bracket 44.

In the example shown in Fig. 2, connection bracket 44 comprises: dunnage 441 and claw 442, be fastenedly connected between dunnage 441 and the axis of guide 53.Alternatively, dunnage 441 is provided with fixed hole 443, the end face of the second end 532 of the axis of guide 53 is provided with the second tapped hole 534, Proportional valve 100 also comprises that threaded fastener 34(is as screw, bolt etc.), threaded fastener 34 passes fixed hole 443 and the second tapped hole 534 successively, thereby connection bracket 44 is fixed on the axis of guide 53.Claw 442 is fixedly connected with the outward edge of latch plate 31, and alternatively, dunnage 441 is formed as circular plate, and claw 442 is multiple, and multiple claws 442 are circumferentially evenly spaced apart along dunnage 441.

In embodiments more of the present utility model, valve gap 2 is metalwork, and the plane that valve gap 2 contacts with air outlet 12 is abrasive machining face, thereby makes can form tight sealing surface between valve gap 2 and air outlet 12, and then ensures Proportional valve 100 responses fast.Meanwhile, because valve gap 2 is metalworks, therefore can extend the working life of Proportional valve 100.Alternatively, valve gap 2 is stainless steel material.

Further, latch plate 31 is outer to be enclosed within on valve gap 2, thereby makes to be connected between valve gap 2 and latch plate 31 simple, reliable.

In a concrete example of the present utility model, as shown in Figure 2, valve gap 2 comprises lid 21, cover plate 22, connecting plate 23 and nut 24, lid 21 is formed as cylindrical body, cover plate 22 is located at the top of lid 21, the upper surface of cover plate 22 forms above-mentioned the first plane 26, the first planes 26 and coordinates to open or close air outlet 12 with air outlet 12.Connecting plate 23 extending radially outwardly from the part periphery wall of lid 21 along lid 21, nut 24 is threaded with the lower end of lid 21.Latch plate 31 is provided with attachment hole 311, and attachment hole 311 is outer to be enclosed within on lid 21, and the part of latch plate 31 contiguous attachment holes 311 is clamped between connecting plate 23 and nut 24, thereby latch plate 31 is connected with valve gap 2.Alternatively, valve gap 2 also comprises packing ring 25, and packing ring 25 is located between latch plate 31 and nut 24, thereby increases the area of contact between valve gap 2 and latch plate 31, and then increases the connectivity robustness between valve gap 2 and latch plate 31.

In embodiments more of the present utility model, as shown in Figure 1, Proportional valve 100 also comprises guiding seat 8, guiding seat 8 is located on the inwall of valve body 1, and guiding seat 8 is outer to be enclosed within on live axle 5, thereby avoids causing because live axle 5 is long live axle 5 bendings, and then ensures the control accuracy of Proportional valve 100.Particularly, guiding seat 8 extends internally from the inwall of valve body 1, and guiding seat 8 coordinates the inwall of valve body 1 to limit gas chamber 13 and accommodating chamber 14.

Further, as shown in Figure 1-Figure 3, Proportional valve 100 also comprises linear bearing 81, between guiding seat 8 and live axle 5, is connected by linear bearing 81.Wherein, linear bearing 81 is outer to be enclosed within on the axis of guide 53, and the axis of guide 53 linear bearing 81 in and the ball precision-fit of linear bearing 81, moves thereby realize the precision of the axis of guide 53 on above-below direction.

Due to the precision guiding of linear bearing 81 to the axis of guide 53, valve gap 2 is moved along rectilinear direction.Simultaneously, surface friction drag between linear bearing 81 and the axis of guide 53 is minimum, this surface friction drag is almost negligible for the attraction force of armature 43 with respect to coil 41, therefore can guarantee the positional accuracy of valve gap 2 relative air outlets 12, thereby realize the linear relationship of the displacement distance of current value and valve gap 2, and then guaranteed the control accuracy of Proportional valve 100.That is to say, this mechanism can make each current value corresponding to coil 41, distance between valve gap 2 and air outlet 12 all can have a determined value, thereby has ensured the positional repeatability of valve gap 2 mobile guides, and then has ensured the control accuracy of Proportional valve 100.

In the example depicted in fig. 1, the moving range that the axis of guide 53 moves up and down in Proportional valve 100 is 3mm, and linear bearing 81 can guarantee that the error of the mobile position of the axis of guide 53 on above-below direction is no more than 0.003mm.

In embodiments more of the present utility model, as shown in Figure 1, Figure 4 and Figure 5, Proportional valve 100 also comprises suction tude 104, valve port pipe 106 and steam outlet pipe 105, a part for the periphery wall of suction tude 104 coordinates with the inner circle wall of suction port 11, the periphery wall of valve port pipe 106 coordinates with the inner circle wall of air outlet 12, and a part for the periphery wall of steam outlet pipe 105 coordinates with the inner circle wall of valve port pipe 106.Wherein, gas is by suction tude 104 inflow gas chambers 13, and the gas in gas chamber 13 is discharged Proportional valve 100 by valve port pipe 106, steam outlet pipe 105 successively.

Particularly, as shown in Figure 2, the first plane 26 can be by coordinating with the mouth of pipe towards valve gap 2 of valve port pipe 106, thereby be sealed air outlet 12.More specifically, as shown in Figure 1, valve port pipe 106 extends from air outlet 12 towards the first plane 26 of valve gap 2, that is to say, valve port pipe 106 stretches in gas chamber 13, thereby it is long to avoid live axle 5 to stretch to part in gas chamber 13, causes the axis of guide 5 bendings.More specifically, valve port pipe 106 is metal tube, thereby makes can form tight metallic sealing section between valve gap 2 and valve port pipe 106, and then improves Proportional valve 100 responses fast.Alternatively, valve port pipe 106 is copper pipe fitting.

In a concrete example of the present utility model, as shown in Figure 1, Figure 4 and Figure 5, valve body 1 comprises that the first sub-valve body 101, the second sub-valve body 102 and the sub-valve body 102 of the 3rd sub-valve body 103, the second are connected between the first sub-valve body 101 and the 3rd sub-valve body 103.Between the first sub-valve body 101, the second sub-valve body 102 and guiding seat 8, limit between the sub-valve body 102 of gas chamber 13, the second, guiding seat 8 and the 3rd sub-valve body 103 and limit accommodating chamber 14.Alternatively, the second sub-valve body 102 and guiding seat 8 part that is formed in one.

Particularly, as shown in Figure 1, the first sub-valve body 101 is roughly formed as the unlimited cylindrical housings of diapire, suction port 11, air outlet 12 are located on the first sub-valve body 101, wherein, air outlet 12 is located on the roof of the first sub-valve body 101, and suction port 11 is located on the perisporium of the first sub-valve body 101.The second sub-valve body 102 is roughly formed as the cylindrical housings that roof and diapire all open wide, and the 3rd sub-valve body 103 is roughly formed as the unlimited cylindrical housings of roof, the first sub-valve body 101, the second sub-valve body 102 and the 3rd sub-valve body 103 coaxial setting substantially.Positioning ring 6 is connected between the second sub-valve body 102 and the 3rd sub-valve body 103, and coil 41 and magnetic core 42 are fixed on the 3rd sub-valve body 103, and mounting hole 15 is located on the diapire of the 3rd sub-valve body 103.

Further, as shown in figures 1 and 3, Proportional valve 100 also comprises the first Sealing 71, the first Sealing 71 is located between the inwall of guiding seat 8 and the outer wall of live axle 5, further, Proportional valve 100 also comprises that the second Sealing 72 and the 3rd Sealing 73, the second Sealings 72 are located between the first sub-valve body 101 and the second sub-valve body 102, the 3rd Sealing 73 is located between the first sub-valve body 101 and valve port pipe 106, thereby ensures that the gas in gas chamber 13 does not leak.

Particularly, the first Sealing 71, the second Sealing 72 and the 3rd Sealing 73 are respectively seal ring.More specifically, as shown in Figure 3, outside the first Sealing 71, be enclosed within on the axis of guide 53, and the first Sealing 71 is positioned at a side of the contiguous armature 43 of linear bearing 81, that is to say, on above-below direction, the first Sealing 71 is fastened between linear bearing 81 and guiding seat 8, at the first Sealing 71 in the radial direction, the first Sealing 71 is fastened between guiding seat 8 and the axis of guide 53.

According to the utility model embodiment's Proportional valve 100, by latch plate 31 and valve gap 2 are set, thereby make that Proportional valve 100 costs are low, response is fast, energy consumption is low, reliability is high, by valve gap 2 is made as to metalwork, thereby extend the working life of Proportional valve 100, ensure Proportional valve 100 responses fast simultaneously.By coil 41, magnetic core 42, live axle 5 and armature 43 are set, thereby can pass into by change the size of the electric current of coil 41, realize the precision control of the gas flow of passing ratio valve 100.By between live axle 5 and valve body 1, linear bearing 81 being set, thereby the precision that realizes live axle 5 moves, and then has ensured the positional repeatability of valve gap 2 mobile guides.

In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiments or example.

Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, amendment, replacement and modification to these embodiments, scope of the present utility model is limited by claim and equivalent thereof.

Claims (14)

1. a Proportional valve, is characterized in that, comprising:

Valve body, described valve body has suction port and air outlet;

Valve gap, described valve gap is located in described valve body to open or close described air outlet;

Latch plate, described latch plate is located in described valve body, and described valve gap is located on described latch plate;

Elastic component, described elastic component is connected often to drive described latch plate to move to make described valve gap to close described air outlet to described air outlet with described latch plate;

Mangetic core assembly, described mangetic core assembly is located in described valve body and described mangetic core assembly is connected to described latch plate, wherein said mangetic core assembly has running state and halted state, in described running state, described mangetic core assembly is configured to drive described latch plate along moving away from the direction of described air outlet.

2. Proportional valve according to claim 1, is characterized in that, described valve gap is metalwork, and the plane that described valve gap contacts with described air outlet is abrasive machining face.

3. Proportional valve according to claim 1, is characterized in that, described mangetic core assembly comprises:

Coil, described coil is located on the diapire of described valve body;

Magnetic core, the first end of described magnetic core is located on the diapire of described valve body, is enclosed within described coil in described magnetic core, is provided with mobile chamber in described magnetic core;

Live axle, described live axle is located at movably described mobile cavity one end indoor and described live axle and stretches out described mobile chamber, and one end of stretching out described mobile chamber of described live axle is connected to described latch plate;

Armature, described armature is enclosed within outward on one end of stretching out described mobile chamber of described live axle, and wherein in described running state, described armature is mobile to drive described live axle along moving away from the direction of described air outlet under the suction of described magnetic core.

4. Proportional valve according to claim 3, is characterized in that, described elastic component is spring, and described elastic component to be located at described mobile cavity indoor, the two ends of described elastic component are only against respectively on the inwall of described live axle and described mobile chamber.

5. Proportional valve according to claim 4, is characterized in that, also comprises the adjustment piece of the amount of deformation for adjusting described elastic component, and it is indoor so that described elastic component is only against on described adjustment piece that described adjustment piece extend into described mobile cavity.

6. Proportional valve according to claim 3, is characterized in that, also comprises guiding seat, and described guiding seat is located on the inwall of described valve body, and described guiding seat is enclosed within outward on described live axle.

7. Proportional valve according to claim 6, is characterized in that, also comprises linear bearing, between described guiding seat and described live axle, is connected by described linear bearing.

8. Proportional valve according to claim 6, is characterized in that, also comprises the first Sealing, and described the first Sealing is located between the inwall of described guiding seat and the outer wall of described live axle.

9. Proportional valve according to claim 3, is characterized in that, described live axle comprises:

Push rod, it is indoor that described push rod is located at described mobile cavity movably;

Connecting rod, the first end of described connecting rod is connected with the first end of described push rod, and described armature is enclosed within outward on described connecting rod;

The axis of guide, the first end of the described axis of guide is connected with the second end of described connecting rod, and the second end of the described axis of guide is connected with described latch plate.

10. according to the Proportional valve described in any one in claim 3-9, it is characterized in that, described mangetic core assembly also comprises connection bracket, and described connection bracket is located on one end of stretching out described mobile chamber of described live axle, and described latch plate is located in described connection bracket.

11. Proportional valves according to claim 3, is characterized in that, also comprise positioning ring, and described positioning ring is located on the inwall of described valve body, and described positioning ring is enclosed within outward on the second end of described magnetic core.

12. Proportional valves according to claim 11, it is characterized in that, described positioning ring comprises the first subring and the second subring, and described the first subring is fixed on described valve body, described the first subring is enclosed within outward in described the second subring, and described the second subring is enclosed within outward on described magnetic core.

13. Proportional valves according to claim 1, is characterized in that, described latch plate is enclosed within on described valve gap outward.

14. Proportional valves according to claim 1, is characterized in that, also comprise:

Suction tude, a part for the periphery wall of described suction tude coordinates with the inner circle wall of described suction port;

Valve port pipe, the periphery wall of described valve port pipe coordinates with the inner circle wall of described air outlet;

Steam outlet pipe, a part for the periphery wall of described steam outlet pipe coordinates with the inner circle wall of described valve port pipe.