CN203756650U - Magnetic force pneumatic displayer - Google Patents
Magnetic force pneumatic displayer Download PDFInfo
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- CN203756650U CN203756650U CN201420091050.0U CN201420091050U CN203756650U CN 203756650 U CN203756650 U CN 203756650U CN 201420091050 U CN201420091050 U CN 201420091050U CN 203756650 U CN203756650 U CN 203756650U
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- piston
- magnetic force
- display device
- absorption member
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Abstract
The utility model discloses a magnetic force pneumatic displayer. The magnetic force pneumatic displayer comprises a valve, a piston, a first magnetic attraction piece and a second magnetic attraction piece. A movable cavity is formed in the valve, and the opposite side walls of the valve are provided with a display hole and an air inlet hole respectively. The end, facing the display hole, of the piston is a display end, the piston is movably arranged in the valve between the reset position where the display end is located in the movable cavity and the display position where the display end extends out of the display hole, and at least one part of peripheral wall of the piston is matched with the inner wall of the movable cavity to define a first cavity and a second cavity, wherein the first cavity and the second cavity are isolated, the first cavity is in the normal pressure state, and the second cavity is communicated with the air inlet hole. The first magnetic attraction piece is arranged on the piston. The second magnetic attraction piece is arranged on the valve. The second magnetic attraction piece and the first magnetic attraction piece are matched to drive the piston to move towards the reset position. According to the magnetic force pneumatic displayer, the air pressure value can be visually displayed, the structure is simple, work is safe and reliable, the indicating effect is still obvious under the critical state, and the magnetic force pneumatic displayer can be applied to various work environments.
Description
Technical field
The utility model relates to detection facility field, especially relates to the pneumatic display device of a kind of magnetic force.
Background technique
In correlation technique, pneumatic control circuit adopts charged indicating device to carry out the working condition of display system conventionally, such as when detecting air-channel system pressure, use be pressure relay.The working principle of pressure relay is: when system pressure is during higher than setting value, pressure relay sends electrical signal, and electrical signal is fed back to control circuit, and control circuit is controlled relevant sound, light alarm element, and alarm element sends alarm signal.The charged indication mechanism of this employing need to arrange pneumo-electrical convertor, therefore under the occasion that can not make power consumption control, cannot be suitable for.And at present conventional pneumatic display device adopts spring force to reset, higher to performance requirements such as the material of spring, fatigues, and also when air pressure and spring force approach, indicating effect is not obvious.
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 magnetic force pneumatic display device, and the pneumatic display device of this magnetic force is applicable to the occasion that can not make power consumption control, and when air pressure approaches critical value, indicating effect is still obvious.
According to the pneumatic display device of magnetic force of the present utility model, comprising: valve body, in described valve body, there is active chamber, in the opposing sidewalls of described valve body, be respectively equipped with the demonstration hole and the inlet hole that are communicated with described active chamber; Piston, one end towards described demonstration hole of described piston is configured to display end, at described display end, the reply position in described active chamber and described display end stretch out between the display position in described demonstration hole and are located at movably in described valve body described piston, and at least a portion periphery wall of described piston and the inwall of described active chamber coordinate to limit isolated the first chamber in atmospheric pressure state and the second chamber being communicated with described inlet hole; The first magnetic absorption member, described the first magnetic absorption member is located on described piston; The second magnetic absorption member, described the second magnetic absorption member is located on described valve body, between described the second magnetic absorption member and described the first magnetic absorption member, coordinates often to drive described piston to move to described reply position.
According to the pneumatic display device of magnetic force of the present utility model, by the first magnetic absorption member is set on piston, the second magnetic absorption member is set on valve body, while making atmospheric pressure value in air-channel system lower than predetermined value, display end is not visible, atmospheric pressure value in air-channel system is during higher than predetermined value, and display end is visual, thus, the pneumatic display device of magnetic force can show the atmospheric pressure value of air-channel system intuitively, and the pneumatic display device of magnetic force is simple in structure, safe and reliable, under threshold state, indicating effect is still obvious.In addition, the pneumatic display device of magnetic force is without using power supply, thus the pneumatic display device of magnetic force can be applicable to various inflammable, explosive, moist, dust greatly, the severe working environment such as high temperature, low temperature.
In addition, according to the pneumatic display device of magnetic force of the present utility model, also can there is following additional technical feature:
In embodiments more of the present utility model, described valve body comprises: body, and one end of described body opens wide to form opening; Valve gap, described valve gap is located on described body to seal described opening, and described inlet hole is located on described valve gap.Thus, piston can enter in active chamber from opening, thereby facilitates the assembling of the pneumatic display device of magnetic force, and simplifies the structure of the pneumatic display device of magnetic force.
Alternatively, described the second magnetic absorption member be located at described valve gap on the end face of described piston.
Alternatively, described the first magnetic absorption member be located at described piston on the end face of described valve gap.
In specific embodiments more of the present utility model, the pneumatic display device of magnetic force also comprises transparent demonstration cover, and described demonstration cover covers on outward on described demonstration hole.Thus, can improve the aesthetics of the pneumatic display device of magnetic force, protect display end not to be subject to outside destroy simultaneously.In addition, also avoided extraneous foreign matter from showing that hole enters the first chamber, thereby avoided the interference of foreign matter to piston, and then improved the functional reliability of the pneumatic display device of magnetic force.
Further, described valve body is provided with the exhaust port with described the first chamber conducting.Thereby make the first chamber can keep atmospheric pressure state.
Alternatively, the pneumatic display device of magnetic force also comprises seal ring, and described seal ring is located on the periphery wall contacting with described active chamber of described piston.Thereby guarantee the tightness of the first chamber, and then guarantee reliability and accuracy that the pneumatic display device of magnetic force detects.
In a specific embodiment of the present utility model, described piston comprises First, second and the 3rd, described second is connected between described First and described the 3rd, described the 3rd cage structure becomes described display end, the periphery wall of described First coordinates with the inwall of described active chamber, and the cross-section area of described piston reduces gradually on the direction from described First to described the 3rd.
Particularly, the area of the end face towards described demonstration hole of described second is greater than the area in described demonstration hole, with the described end face of second described in when described piston is positioned at display position, is only against in the part in the described demonstration of having of described valve body hole.Thus, piston can rest in reposefully display position place when triggering, thereby it is impaired to avoid piston to rock in active chamber.
Alternatively, described the first magnetic absorption member is magnet, and described the second magnetic absorption member is magnet ring.
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.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination obviously and is easily understood becoming embodiment's description, wherein:
Fig. 1 is the schematic diagram while being positioned at reply position according to the pneumatic display device of the utility model embodiment's magnetic force;
Fig. 2 is the schematic diagram while being positioned at display position according to the pneumatic display device of the utility model embodiment's magnetic force.
Reference character:
The pneumatic display device 100 of magnetic force, reply position A, display position B,
Valve body 1, active chamber 10, the first chamber 11, the second chamber 12, show hole 13, inlet hole 14, exhaust port 15, body 16, valve gap 18,
Piston 2, display end 20, First 21, second 22, the 3rd 23, circular groove 24,
The first magnetic absorption member 3, magnet 31,
The second magnetic absorption member 4, magnet ring 41,
Seal ring 5, demonstration cover 6
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.Below by the embodiment who is described with reference to the drawings, be exemplary, 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, orientation or the position relationship of the indication such as term " thickness ", " top ", " end ", " interior ", " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than indicate or imply that the device of indication or element must have specific orientation, with specific orientation, construct and operation, 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 indication 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 " a plurality of " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, also can be to removably connect, or connect integratedly; It can be mechanical 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.
Below with reference to Fig. 1 and Fig. 2, describe according to the pneumatic display device 100 of the utility model embodiment's magnetic force, wherein, the pneumatic display device 100 of magnetic force is for detection of the pressure of air-channel system (scheming not shown).
According to the pneumatic display device 100 of the utility model embodiment's magnetic force, as depicted in figs. 1 and 2, comprising: valve body 1, piston 2, the first magnetic absorption member 3 and the second magnetic absorption member 4.
See figures.1.and.2, in valve body 1, there is active chamber 10, in the opposing sidewalls of valve body 1, be respectively equipped with the demonstration hole 13 and the inlet hole 14 that are communicated with active chamber 10.Wherein, inlet hole 14 is connected with air-channel system, that is to say, the gas in air-channel system flows into active chamber 10 by inlet hole 14.
See figures.1.and.2, piston 2 is located in valve body 1 movably, and piston 2 has the position A(of reply as shown in Figure 1 in valve body 1) and display position B(is as shown in Figure 2).Wherein, one end towards showing hole 13 of piston 2 is configured to display end 20, piston 2 can move between reply position A and display position B, when being positioned at active chamber 10, display end 20 represents that piston 2 is positioned at reply position A, represents that piston 2 is positioned at display position B when display end 20 stretches out demonstration hole 13.Concrete example with Fig. 1 and Fig. 2 illustrates, piston 2 can move between the roof of active chamber 10 and diapire, when piston 2 is only against the roof of active chamber 10, the display end 20 of piston 2 stretches out from showing in hole 13, now, piston 2 is positioned at display position B, and display end 20 is visual, from the external world, can be observed display end 20.When piston 2 is only against the diapire of active chamber 10, the display end 20 of piston 2 is retracted in active chamber 10, and now, piston 2 is positioned at replys position A, and display end 20 is not visible, from the external world, cannot observe display end 20.
In a concrete example of the present utility model, the surface of piston 2 can have color layer (scheming not shown), and thus, when display end 20 stretches out demonstration hole 13, the display effect of display end 20 is more obvious.Alternatively, color layer is red color layer or green layer.Certainly, the utility model is not limited to this, for example, color layer can only be located on the surface of the surface of display end 20 or the extension of display end 20, again for example, in another concrete example of the present utility model, the surface of display end 20 is provided with pattern layer (scheming not shown), when display end 20 stretches out demonstration hole 13, this pattern layer also can strengthen the display effect of display end 20.
See figures.1.and.2, at least a portion periphery wall of piston 2 coordinates to limit isolated the first chamber 11 and the second chamber 12 with the inwall of active chamber 10, that is to say, piston 2 is partitioned into the first chamber 11 and the second chamber 12 by active chamber 10, and cannot be communicated with between the first chamber 11 and the second chamber 12.
Wherein, the second chamber 12 is communicated with inlet hole 14, that is to say, the gas in air-channel system can flow in the second chamber 12 by inlet hole 14.The first chamber 11 is in atmospheric pressure state, here, the first chamber 11 can keep atmospheric pressure state by any mode, for example, the pneumatic display device 100 of magnetic force can comprise pipeline (scheming not shown), one end of pipeline is connected with the first chamber 11, and the other end of pipeline is connected with the external world, thereby the first chamber 11 can be in communication with the outside to keep atmospheric pressure state by this pipeline.It should be noted that, normal pressure refers to the atmospheric pressure in surroundings, and the atmospheric pressure value of normal pressure can obtain by measurement in actual applications.
Be understandable that, because piston 2 can move between reply position A and display position B, therefore the volume of the first chamber 11 and the second chamber 12 is variable, when piston 2 is moved to display position B by reply position A, the volume of the volume-diminished of the first chamber 11 and the second chamber 12 increases, when piston 2 is moved to reply position A by display position B, the volume increase of the first chamber 11 and the volume-diminished of the second chamber 12.
The first magnetic absorption member 3 is located on piston 2, and the second magnetic absorption member 4 is located on valve body 1, coordinates with normal driven plunger 2 and move to replying position A between the second magnetic absorption member 4 and the first magnetic absorption member 3.What deserves to be explained is, " often " refers to common state, namely do not trigger state.Particularly, magnetic force between the first magnetic absorption member 3 and the second magnetic absorption member 4 is attraction force, and the second magnetic absorption member 4 is subject to all the time towards the attraction force of replying position A, thus piston 2, at the pneumatic display device 100 of magnetic force, not under triggering state, this attraction force can driven plunger 2 move to replying position A.For example, in the example shown in Fig. 1 and Fig. 2, the second magnetic absorption member 4 is located on the diapire of valve body 1, and thus, piston 2 is subject to the attraction force towards the diapire of valve body 1.Under triggering state not, this attraction force driven plunger 2 moves to the diapire of valve body 1, until piston 2 is only against on the diapire of valve body 1.Now, the attraction force between piston 2 and the diapire of valve body 1 makes piston 2 be difficult for departing from the diapire of valve body 1.
Below with reference to Fig. 1 and Fig. 2, the detection principle of the pneumatic display device 100 of magnetic force is elaborated.
One side of piston 2 is that the gas in the first chamber 11, the first chambers 11 is the first pressure to the pressure of piston 2.It should be noted that, because the first chamber 11 is in atmospheric pressure state, and in reality, the atmospheric pressure value amplitude of fluctuation of normal pressure is less, and therefore, when the structure of piston 2 is determined, the first pressure can be approximately fixed value.
It is making a concerted effort of the first pressure and attraction force that piston 2 is subject to towards the power of replying position A.It should be noted that, when the structure of the first magnetic absorption member 3 and the second magnetic absorption member 4 and Relative position determination, attraction force can be determined.Wherein, when piston 2 is when replying position A, the attraction force of the second magnetic absorption member 4 that piston 2 is subject to is the first gravitation, and the first gravitation is determined value.
The opposite side of piston 2 is the second chamber 12, gas in the second chamber 12 is the second pressure to the pressure of piston 2, wherein, the opposite direction of the direction of the second pressure and the first pressure, therefore, when the second pressure can overcome making a concerted effort of the first pressure and attraction force, the second pressure can driven plunger 2 away from replying position A and moving towards display position B.Because the second chamber 12 is connected with air-channel system by inlet hole 14, therefore, the atmospheric pressure value of the second chamber 12 equals the atmospheric pressure value of air-channel system, that is to say, when the structure of piston 2 is determined, the size of the second pressure is determined by the atmospheric pressure value of air-channel system.
In the situation that piston 2 is positioned at reply position A, when the atmospheric pressure value of air-channel system is less than predetermined value, the second pressure is less than making a concerted effort of the first pressure and the first gravitation, therefore piston 2 remains on and replys position A, now, display end 20 is not visible, and the pneumatic display device 100 of magnetic force is not for triggering state.When the atmospheric pressure value of air-channel system is greater than predetermined value, the second pressure is greater than making a concerted effort of the first pressure and the first gravitation, and now the second pressure-driven piston 2 moves to display position B, and now, display end 20 is visual, and the pneumatic display device 100 of magnetic force is triggering state.Here, predetermined value is the atmospheric pressure value while making the second pressure equal making a concerted effort of the first pressure and the first gravitation.
It should be noted that, the distance between the size of attraction force and piston 2 and the second magnetic absorption member 4 is inversely proportional to, and therefore, when piston 2 is positioned at reply position A, making a concerted effort of the first pressure and attraction force is maximum value.When piston 2 leaves while replying position A, reduce the first pressure and attraction force with joint efforts, and the distance between piston 2 and the second magnetic absorption member 4 is far away, the first pressure and attraction force less with joint efforts.Therefore,, when the atmospheric pressure value of air-channel system is greater than predetermined value and approaches predetermined value, the pneumatic display device 100 of magnetic force also can be triggered.Particularly, when the atmospheric pressure value of air-channel system is slightly larger than predetermined value, the second pressure can driven plunger 2 leave reply position A, afterwards, along with the increase of the distance between piston 2 and the second magnetic absorption member 4, making a concerted effort of the first pressure and attraction force is less, and now the pressure difference between the making a concerted effort of the second pressure and the first pressure and attraction force is just larger, can accelerate like this driven plunger 2 and move towards display position B, piston 2 more easily moves to display position B.Thereby make the display effect of the pneumatic display device 100 of magnetic force obvious.
To sum up, when display end 20 is not visible, show that the atmospheric pressure value of air-channel system input gas is lower than predetermined value, can apparent time when display end 20, show that the atmospheric pressure value of air-channel system input gas is higher than predetermined value.Thus, the pneumatic display device 100 of magnetic force can detect the atmospheric pressure value of air-channel system intuitively.Wherein, the pneumatic display device 100 of magnetic force simple in structure, and realize and detecting and Presentation Function with magnetic force, make the reliability and safety of the pneumatic display device 100 of magnetic force higher.And, the pneumatic display device 100 of magnetic force is without using power supply, therefore the pneumatic display device 100 of magnetic force can be applicable to various inflammable, explosive, moist, dust greatly, the severe working environment such as high temperature, low temperature, for example, the pneumatic display device 100 of magnetic force can be used for the demonstration of bleed pressure in pneumatic gas-control first-aid respirator.
According to the pneumatic display device 100 of the utility model embodiment's magnetic force, by the first magnetic absorption member 3 is set on piston 2, the second magnetic absorption member 4 is set on valve body 1, while making atmospheric pressure value in air-channel system lower than predetermined value, display end 20 is not visible, atmospheric pressure value in air-channel system is during higher than predetermined value, display end 20 is visual, thus, the pneumatic display device 100 of magnetic force can show the atmospheric pressure value of air-channel system intuitively, and the pneumatic display device 100 of magnetic force is simple in structure, safe and reliable, and under threshold state, indicating effect is still obvious.In addition, the pneumatic display device 100 of magnetic force is without using power supply, thus the pneumatic display device 100 of magnetic force can be applicable to various inflammable, explosive, moist, dust greatly, the severe working environment such as high temperature, low temperature.
In embodiments more of the present utility model, as depicted in figs. 1 and 2, valve body 1 comprises body 16 and valve gap 18.Wherein, one end of body 16 opens wide to form opening, and valve gap 18 is located on body 16 with sealing opening, and inlet hole 14 is located on valve gap 18.Thus, piston 2 can enter in active chamber 10 from opening, thereby facilitates the assembling of the pneumatic display device 100 of magnetic force, and simplifies the structure of the pneumatic display device 100 of magnetic force.
In the example shown in Fig. 1 and Fig. 2, body 16 forms the cylindrical of bottom-open, shows that hole 13 is located on the roof of body 16, shows that hole 13 forms the circular port that runs through body 16 on the thickness direction of body 16, shows that hole 13 and body 16 coaxially arrange.Active chamber 10 also forms cylindrical, and active chamber 10 coaxially arranges with body 16.Valve gap 18 forms circular lid, and valve gap 18 forms the diapire of valve body 1, and valve gap 18 coaxially arranges with body 16.Inlet hole 14 is located on valve gap 18, and inlet hole 14 forms the circular port that runs through valve gap 18 on the thickness direction of valve gap 18, and inlet hole 14 coaxially arranges with valve gap 18.Here it should be noted that, thickness direction refers to from the external world to active chamber 10 direction.Certainly, the shape of valve body 1 of the present utility model is not limited to this, only otherwise affect the Presentation Function of the pneumatic display device 100 of magnetic force.
Particularly, the first magnetic absorption member 3 be located at piston 2 on the end face of valve gap 18, the second magnetic absorption member 4 be located at valve gap 18 on the end face of piston 2, for example, in the example shown in Fig. 1 and Fig. 2, the first magnetic absorption member 3 is located on the bottom surface of piston 2, the second magnetic absorption member 4 is located on the end face of valve gap 18, thus, when piston 2 is positioned at reply position A, distance between the first magnetic absorption member 3 and the second magnetic absorption member 4 is less, make in the attraction force of take between piston 2 and the second magnetic absorption member 4 under the prerequisite of the first gravitation, the size of the first magnetic absorption member 3 and/or the second magnetic absorption member 4 is less, thereby be convenient to dwindle the size of the pneumatic display device 100 of magnetic force.
Alternatively, the first magnetic absorption member 3 is that magnet 31, the second magnetic absorption member 4 are magnet ring 41.In the example shown in Fig. 1 and Fig. 2, magnet ring 41 coaxially arranges with inlet hole 14, and magnet 31 forms circle, and magnet 31 coaxially arranges with magnet ring 41.
In embodiments more of the present utility model, as depicted in figs. 1 and 2, the pneumatic display device 100 of magnetic force also comprises transparent demonstration cover 6, shows that outer the covering on of cover 6 shows on hole 13.When display end 20 stretches out from demonstration hole 13, show outside cover 6 and cover on display end 20, thus, can improve the aesthetics of the pneumatic display device 100 of magnetic force, protect display end 20 not to be subject to outside destroy simultaneously.In addition, also avoided extraneous foreign matter from showing that hole 13 enters the first chamber 11, thereby avoided the interference of foreign matter to piston 2, and then improved the functional reliability of the pneumatic display device 100 of magnetic force.
Alternatively, show that cover 6 forms hemispherical shell, show that cover 6 and body 16 coaxially arrange, show cover 6 with body 16 between for being fixedly connected with.
Further, as depicted in figs. 1 and 2, valve body 1 is provided with the exhaust port 15 with the first chamber 11 conductings, thereby makes the first chamber 11 can keep atmospheric pressure state.Particularly, exhaust port 15 is located on the sidewall of body 16, and exhaust port 15 forms the circular port that runs through body 16 on the thickness direction of body 16.Certainly, the position of exhaust port 15 is not limited to this, and exhaust port 15 also can be located on the roof of body 16, and exhaust port 15 also can be located at and show on cover 6, as long as can make the first chamber 11 keep atmospheric pressure state.
In a specific embodiment of the present utility model, as depicted in figs. 1 and 2, piston 2 comprises First 21, second 22 and the 3rd 23.
Wherein, the periphery wall of First 21 coordinates with the inwall of active chamber 10, between the inwall of the diapire of First 21 and active chamber 10, the roof of valve gap 18, limits the first chamber 11.First 21 forms the shape with the shape adaptation of active chamber 10, and for example, in the example of Fig. 1 and Fig. 2, First 21 forms cylindrical.
Be connected to for second 22 between First 21 and the 3rd 23, the cross-section area of piston 2 reduces gradually on the direction from First 21 to the 3rd 23.Be configured to display end 20 for the 3rd 23, when piston 2 is positioned at display position B, the 3rd 23 is stretched out from showing in hole 13.
Here, second 22 and the 3rd 's 23 shape is not done concrete restriction, as long as can be used as display end 20 for the 3rd 23, from showing in hole 13, stretches out.For convenience of piston 2 processing, in a concrete example of the present utility model, piston 2 forms multidiameter shaft, that is to say, First 21, second 22 and the 3rd 23 form coaxial cylindrical.
Particularly, the area towards showing the end face in hole 13 of second 22 is greater than the area that shows hole 13, with the end face of second 22 when piston 2 is positioned at display position B, be only against having in the part that shows hole 13 of valve body 1, thus, piston 2 can rest in reposefully display position B place when triggering, thereby it is impaired to avoid piston 2 to rock in active chamber 10.
Further, the pneumatic display device 100 of magnetic force also comprises seal ring 5, and seal ring 5 is located on the periphery wall contacting with active chamber 10 of piston 2, thereby guarantees the tightness of the first chamber 11, and then guarantees reliability and accuracy that the pneumatic display device 100 of magnetic force detects.Particularly, as depicted in figs. 1 and 2, seal ring 5 forms ring, and seal ring 5 is located on the periphery wall of First 21.Alternatively, the outer circumferential face of piston 2 is provided with circular groove 24, and seal ring 5 is fastened in circular groove 24, and thus, the position of seal ring 5 is fixed, thereby guarantees the sealing effect of seal ring 5.
According to the pneumatic display device 100 of the utility model embodiment's magnetic force, cylindrical by active chamber 10 is formed, piston 2 is designed to the multidiameter shaft coaxial with active chamber 10, thereby makes the pneumatic display device 100 of magnetic force simple in structure, and easy processing is with low cost.By being provided with seal ring 5, thus the functional reliability of the pneumatic display device 100 of raising magnetic force.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " 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 the specific features of description, structure, material or feature can be with suitable mode combinations 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, modification, replacement and modification to these embodiments, scope of the present utility model is limited by claim and equivalent thereof.
Claims (10)
1. the pneumatic display device of magnetic force, is characterized in that, comprising:
Valve body, has active chamber in described valve body, is respectively equipped with the demonstration hole and the inlet hole that are communicated with described active chamber in the opposing sidewalls of described valve body;
Piston, one end towards described demonstration hole of described piston is configured to display end, at described display end, the reply position in described active chamber and described display end stretch out between the display position in described demonstration hole and are located at movably in described valve body described piston, and at least a portion periphery wall of described piston and the inwall of described active chamber coordinate to limit isolated the first chamber in atmospheric pressure state and the second chamber being communicated with described inlet hole;
The first magnetic absorption member, described the first magnetic absorption member is located on described piston;
The second magnetic absorption member, described the second magnetic absorption member is located on described valve body, between described the second magnetic absorption member and described the first magnetic absorption member, coordinates often to drive described piston to move to described reply position.
2. the pneumatic display device of magnetic force according to claim 1, is characterized in that, described valve body comprises:
Body, one end of described body opens wide to form opening;
Valve gap, described valve gap is located on described body to seal described opening, and described inlet hole is located on described valve gap.
3. the pneumatic display device of magnetic force according to claim 2, is characterized in that, described the second magnetic absorption member be located at described valve gap on the end face of described piston.
4. the pneumatic display device of magnetic force according to claim 3, is characterized in that, described the first magnetic absorption member be located at described piston on the end face of described valve gap.
5. the pneumatic display device of magnetic force according to claim 1, is characterized in that, also comprises transparent demonstration cover, and described demonstration cover covers on outward on described demonstration hole.
6. the pneumatic display device of magnetic force according to claim 5, is characterized in that, described valve body is provided with the exhaust port with described the first chamber conducting.
7. the pneumatic display device of magnetic force according to claim 1, is characterized in that, also comprises seal ring, and described seal ring is located on the periphery wall contacting with described active chamber of described piston.
8. according to the pneumatic display device of magnetic force described in any one in claim 1-7, it is characterized in that, described piston comprises First, second and the 3rd, described second is connected between described First and described the 3rd, described the 3rd cage structure becomes described display end, the periphery wall of described First coordinates with the inwall of described active chamber, and the cross-section area of described piston reduces gradually on the direction from described First to described the 3rd.
9. the pneumatic display device of magnetic force according to claim 8, it is characterized in that, the area of the end face towards described demonstration hole of described second is greater than the area in described demonstration hole, with the described end face of second described in when described piston is positioned at display position, is only against in the part in the described demonstration of having of described valve body hole.
10. the pneumatic display device of magnetic force according to claim 1, is characterized in that, described the first magnetic absorption member is magnet, and described the second magnetic absorption member is magnet ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420091050.0U CN203756650U (en) | 2014-02-28 | 2014-02-28 | Magnetic force pneumatic displayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420091050.0U CN203756650U (en) | 2014-02-28 | 2014-02-28 | Magnetic force pneumatic displayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756650U true CN203756650U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420091050.0U Withdrawn - After Issue CN203756650U (en) | 2014-02-28 | 2014-02-28 | Magnetic force pneumatic displayer |
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| CN (1) | CN203756650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879347A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Magnetic pneumatic display |
-
2014
- 2014-02-28 CN CN201420091050.0U patent/CN203756650U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879347A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Magnetic pneumatic display |
| CN104879347B (en) * | 2014-02-28 | 2018-04-20 | 北京谊安医疗系统股份有限公司 | The pneumatic display of magnetic force |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140806 Effective date of abandoning: 20180420 |