CN209781718U - Exhaust valve and sample analyzer - Google Patents
Exhaust valve and sample analyzer Download PDFInfo
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- CN209781718U CN209781718U CN201920427392.8U CN201920427392U CN209781718U CN 209781718 U CN209781718 U CN 209781718U CN 201920427392 U CN201920427392 U CN 201920427392U CN 209781718 U CN209781718 U CN 209781718U
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Abstract
the utility model discloses a discharge valve and sample analyzer, discharge valve includes: the valve seat is provided with a valve cavity and an exhaust branch communicated with the valve cavity; the adjusting piece can extend into the exhaust branch and is in sealing fit with the exhaust branch; the driving component drives the adjusting piece to move so that the adjusting piece switches on and off the exhaust branch; a controller for controlling the operation of the driving part; the adjusting part is connected with the valve seat in a sealing mode, and the adjusting part cuts off the exhaust branch when the driving part drives the adjusting part to move to the first position; when the driving part drives the adjusting piece to move to the second position, the adjusting piece conducts the exhaust branch. In the exhaust valve, the sealing effect can be improved, and larger pressure can be borne; the dead volume of the whole exhaust valve can be reduced, and the requirement on the dead volume is met; the automatic exhaust is realized, the matching requirement is reduced, the requirement on the processing technology is reduced, and therefore the cost is effectively reduced.
Description
Technical Field
The utility model relates to a sample analysis technical field, more specifically say, relate to a discharge valve and sample analyzer.
background
in sample analyzers, high pressure pumps are typically used to deliver fluids, such as blood sample analyzers. Because the high-pressure pump has poor self-priming capability, when bubbles exist in the pipeline, the high-pressure pump cannot suck liquid, the bubbles need to be discharged through the exhaust pipeline, and the exhaust valve realizes the connection and disconnection of the exhaust pipeline.
At present, the commonly used exhaust valves include electromagnetic valves, manual valves and multi-station rotary electric control valves, wherein the electromagnetic valves and the multi-station rotary electric control valves can automatically exhaust. The pressure borne by the large electromagnetic valve can meet the requirement that the pressure is not less than 17MPa, but dead volumes in the valve are large; the dead volume in the ordinary small-sized electromagnetic valve is small, but the pressure born by the ordinary small-sized electromagnetic valve is generally lower than 1 MPa. The multi-station rotary electric control valve can meet the requirements on pressure and dead volume, but the end faces of the rotor and the stator in the multi-station rotary electric control valve are in surface contact sealing, so that the matching requirement of the rotor and the stator is high, a flow channel is complex, the requirement on a machining process is high, and the cost is high.
In summary, how to design the exhaust valve to realize automatic exhaust can meet the requirements for pressure and dead volume, and reduce cost, is a problem to be solved urgently by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an exhaust valve to realize self-bleeding, can satisfy the demand to pressure and dead volume, reduce cost simultaneously. Another object of the present invention is to provide a sample analyzer with the above exhaust valve.
in order to achieve the above object, the utility model provides a following technical scheme:
an exhaust valve, comprising:
The valve seat is provided with a valve cavity and an exhaust branch communicated with the valve cavity;
the adjusting piece can extend into the exhaust branch and is in sealing fit with the exhaust branch;
The driving component drives the adjusting piece to move so as to enable the adjusting piece to switch on or off the exhaust branch;
a controller for controlling the operation of the driving part;
The adjusting piece is connected with the valve seat in a sealing mode, and the adjusting piece cuts off the exhaust branch when the driving part drives the adjusting piece to move to the first position; when the driving part drives the adjusting piece to move to the second position, the adjusting piece conducts the exhaust branch.
Preferably, the exhaust branch has a taper hole section, and the adjusting piece is in sealing fit with the exhaust branch through a taper surface at the taper hole section.
Preferably, the adjustment member is threadedly engaged with the valve seat.
preferably, the driving part drives the adjusting part to rotate through a motion mechanism, and the motion mechanism comprises a rotating part and an elastic supporting part;
the end face of the rotating part is provided with an arc-shaped groove, and the elastic supporting part can deform along the depth direction of the arc-shaped groove; one of the rotating piece and the elastic supporting piece is in transmission connection with the driving part, and the other one of the rotating piece and the elastic supporting piece is in transmission connection with the adjusting piece;
When the elastic supporting piece is in a first state, the elastic supporting piece is in contact with the end face of the rotating piece, which is provided with the arc-shaped groove; when the elastic support piece is in a second state, the elastic support piece is positioned in the arc-shaped groove and is in sliding fit with the arc-shaped groove; when the elastic support piece is in a third state, the elastic support piece is abutted against the first groove end of the arc-shaped groove; when the elastic support piece is in the fourth state, the elastic support piece is abutted against the second groove end of the arc-shaped groove.
preferably, the resilient support is a ball plunger.
Preferably, the rotating part is in transmission connection with the driving part, the rotating part is a driven gear, and the driving part is in transmission connection with the driven gear through a driving gear;
the exhaust valve further comprises a mounting plate for mounting the driving gear, the driven gear and the driving part.
Preferably, the exhaust branch comprises a first exhaust section and a second exhaust section which are communicated and are arranged vertically to each other; wherein, first exhaust section with the valve chamber intercommunication, the axis of first exhaust section with the axis collineation of valve chamber or parallel, the regulating part can with first exhaust section sealing fit.
Preferably, the inlet axis of the valve cavity and the outlet axis of the valve cavity are arranged in parallel or in a collinear way, and the inlet axis of the valve cavity and the outlet axis of the valve cavity are positioned at the same height position of the valve seat.
Preferably, the discharge valve further comprises:
A pressure sensor arranged on the valve seat and used for detecting the pressure in the valve cavity,
An alarm for giving an alarm according to the pressure detected by the pressure sensor;
The controller is connected with the pressure sensor and controls the driving part to operate according to the pressure detected by the pressure sensor.
preferably, the exhaust valve further comprises a detector connected to the controller; the detector is used for detecting the displacement of the adjusting piece when the driving part drives the adjusting piece to move; when the driving part drives the adjusting part to rotate, the detector is used for detecting the rotating angle of the adjusting part.
Based on the above-mentioned discharge valve that provides, the utility model also provides a sample analyzer, this sample analyzer include discharge valve, discharge valve is above-mentioned arbitrary discharge valve.
the utility model provides a discharge valve self-bleeding principle: the controller controls the driving part to operate according to requirements to drive the adjusting part to move, and when exhaust is needed, the adjusting part is driven to move to a second position, so that the adjusting part is communicated with the exhaust branch to realize exhaust; when not needing to exhaust, the drive regulating part moves to first position, and the regulating part is located exhaust branch and with exhaust branch sealed fit for the regulating part cuts off exhaust branch, stops to exhaust.
In the exhaust valve provided by the utility model, the driving part drives the adjusting part to move, so that the adjusting part extends into the exhaust branch and is in sealing fit with the exhaust branch, and under the action force of the driving part, the sealing effect can be effectively improved, and larger pressure can be borne; and the valve seat is provided with a valve cavity and an exhaust branch communicated with the valve cavity, the regulating piece can extend into the exhaust branch and cut off the exhaust branch through the sealing fit of the regulating piece and the exhaust branch, so that the structures of the valve seat and the flow path are simplified, when the exhaust branch is cut off by the regulating piece, part of the exhaust branch is blocked by the regulating piece, the dead volume of the whole exhaust valve can be reduced, and the requirement on the dead volume is met.
The utility model provides an among the discharge valve, the regulating part can stretch in the exhaust branch road and with the sealed cooperation of exhaust branch road, the sealed cooperation of inner wall of regulating part and exhaust branch road promptly, and the aperture of accessible adjustment exhaust branch road realizes that the aperture is sealed, and rotor and stator adopt big end face contact to seal to compare among the prior art, can effectively reduce the cooperation requirement to reduce the requirement to processing technology, and then effective reduce cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
fig. 1 is a front view of an exhaust valve according to an embodiment of the present invention;
Fig. 2 is a top view of an exhaust valve according to an embodiment of the present invention;
FIG. 3 is a partial block diagram of FIG. 1;
3 FIG. 3 4 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 3 3; 3
FIG. 5 is a sectional view taken along line B-B of FIG. 3;
Fig. 6 is a schematic view illustrating a connection between a driven gear and a ball plunger in an exhaust valve according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view taken along line C-C of FIG. 6;
fig. 8 is a sectional view taken along line D-D of fig. 6.
Detailed Description
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-8, the embodiment of the present invention provides an exhaust valve, which comprises: a valve seat 11, an adjusting piece 6, a driving part 1 and a controller.
The valve seat 11 is provided with a valve cavity a and a gas exhaust branch communicated with the valve cavity a, liquid enters the valve cavity a through an inlet of the valve cavity a and then is exhausted through an outlet of the valve cavity a, and gas is exhausted through the gas exhaust branch. For convenience of installation, an inlet joint 8 is arranged at an inlet of the valve cavity a, an outlet joint 10 is arranged at an outlet of the valve cavity a, an exhaust joint 7 is arranged at an exhaust port of the exhaust branch, and at least one of the inlet joint 8, the outlet joint 10 and the exhaust joint 7 is a hand-screwed joint. Of course, the inlet connection 8, the outlet connection 10 and the evacuation connection 7 may alternatively be other types of connections, and are not limited thereto.
The adjusting piece 6 can extend into the exhaust branch and is in sealing fit with the exhaust branch; the driving part 1 drives the adjusting piece 6 to move, so that the adjusting piece 6 switches on and off the exhaust branch; the controller controls the operation of the driving part 1, for example, the controller controls the driving part 1 to be turned on and off, and controls the driving part 1 to be operated in a forward direction and a reverse direction.
In the exhaust valve, when the driving part 1 drives the adjusting part 6 to move to the first position, the adjusting part 6 is positioned in the exhaust branch and is in sealing fit with the exhaust branch, so that the adjusting part 6 cuts off the exhaust branch; when the driving part 1 drives the adjusting part 6 to move to the second position, the adjusting part 6 is no longer in sealing fit with the exhaust branch, so that the adjusting part 6 conducts the exhaust branch, and at this time, the adjusting part 6 may be located in the exhaust branch or not.
the embodiment of the utility model provides a discharge valve self-bleeding principle: the controller controls the driving part 1 to operate according to the requirement to drive the adjusting part 6 to move, and when the exhaust is required, the adjusting part 6 is driven to move to the second position, so that the adjusting part 6 is communicated with the exhaust branch to realize the exhaust; when exhaust is not needed, the adjusting piece 6 is driven to move to the first position, and the adjusting piece 6 is located in the exhaust branch and is in sealing fit with the exhaust branch, so that the adjusting piece cuts off the exhaust branch and stops exhaust.
in the exhaust valve, the driving part 1 drives the adjusting part 6 to move, so that the adjusting part 6 extends into the exhaust branch and is in sealing fit with the exhaust branch, the sealing effect can be effectively improved under the action force of the driving part 1, and larger pressure can be borne; moreover, the valve seat 11 is provided with a valve cavity and an exhaust branch communicated with the valve cavity, the adjusting piece 6 can extend into the exhaust branch, and the exhaust branch is cut off through the sealing fit of the adjusting piece 6 and the exhaust branch, so that the structures of the valve seat 11 and the flow path are simplified, when the exhaust branch is cut off by the adjusting piece 6, part of the exhaust branch is blocked by the adjusting piece 6, the dead volume of the whole exhaust valve can be reduced, and the requirement on the dead volume is met.
The embodiment of the utility model provides an among the discharge valve, regulating part 6 can stretch in the exhaust branch road and with the sealed cooperation of exhaust branch road, the sealed cooperation of inner wall of regulating part 6 and exhaust branch road promptly, the aperture of accessible adjustment exhaust branch road realizes that the aperture is sealed, and rotor and stator adopt big end face contact to seal to compare among the prior art, can effectively reduce the cooperation requirement to reduce the requirement to processing technology, and then effective reduce cost.
In order to improve the sealing performance of the adjusting piece 6 and the exhaust branch, as shown in fig. 4, the exhaust branch has a taper hole section, and the adjusting piece 6 and the exhaust branch are in sealing fit through a taper surface at the taper hole section. It will be appreciated that the adjusting member 6 has a tapered section which is in sealing fit with the tapered bore section, and the small end of the tapered section is close to the valve chamber a. In order to ensure proper installation, the conical bore section tapers in the direction in which the adjusting element 6 projects into the exhaust branch.
The structure realizes the sealing fit of the conical surface, improves the sealing performance and further improves the pressure born by the exhaust valve.
In the practical application process, when the pressure born by the exhaust valve is small, the exhaust branch and the adjusting piece 6 can also be in sealing fit through the cylindrical surfaces with the same diameter, and the invention is not limited to the above embodiment.
The adjusting member 6 is screw-engaged with the valve seat 11 for easy installation and improved sealing performance. Specifically, the adjuster 6 is provided with an external thread, and the valve seat 11 is provided with a threaded hole that is fitted with the external thread of the adjuster 6. At this time, the driving part 1 drives the adjusting piece 6 to rotate, and the adjusting piece 6 is in sealing fit with the exhaust branch circuit along with the tightening of the adjusting piece 6. When the matching surface of the adjusting piece 6 and the exhaust branch is worn, the adjusting piece can be driven to rotate by the driving part 1, and the adjusting piece 6 is further screwed to eliminate the influence on the sealing performance caused by the wear, so that the sealing performance is further improved.
When the adjusting piece 6 is in threaded fit with the valve seat 11, the driving part 1 drives the adjusting piece 6 to rotate, then the adjusting piece 6 is screwed down to realize non-exhaust, and the adjusting piece 6 is unscrewed to realize exhaust. When venting is required, i.e. the adjusting member 6 needs to be unscrewed, the torque required to unscrew the adjusting member 6 is greater than the torque required to screw the adjusting member 6, making it difficult to unscrew the adjusting member 6.
in order to solve the above problem, the above driving part 1 drives the adjusting part 6 to rotate by a moving mechanism, the moving mechanism includes a rotating part and an elastic supporting part 4; the end face of the rotating part is provided with an arc-shaped groove b, and the elastic supporting part 4 can deform along the depth direction of the arc-shaped groove b; one of the rotating member and the elastic supporting member 4 is drivingly connected to the driving member 1, and the other is drivingly connected to the adjusting member 6.
In the above structure, when the elastic supporting member 4 is in the first state, the elastic supporting member 4 is in contact with the end surface of the rotating member provided with the arc-shaped groove b; when the elastic support piece 4 is in the second state, the elastic support piece 4 is positioned in the arc-shaped groove b and is in sliding fit with the arc-shaped groove b; when the elastic supporting member 4 is in the third state, the elastic supporting member 4 and the first slot end b of the arc-shaped slot b1abutting; when the elastic supporting member 4 is in the fourth state, the elastic supporting member 4 and the second slot end b of the arc-shaped slot b2And (4) abutting.
Specifically, both the above-described elastic support member 4 and the rotating member are rotatable. Taking the example that the elastic supporting part 4 is connected with the adjusting part 6 in a transmission way, and the rotating part is connected with the driving part 1 in a transmission way, the working process is specifically explained as follows:
so as not to be deflated, in which the adjustment member 6 is in the tightening position and the resilient support member 4 is in the first state, i.e. the resilient support member 4 is in contact with the end surface of the rotation member provided with the arc-shaped slot b, as shown in fig. 6-8. When the flow of unscrewing the adjusting piece 6 is executed, the controller controls the driving part 1 to start, the driving part 1 drives the rotating piece to rotate clockwise, and after the rotating piece rotates for a certain angle, the elastic supporting piece 4 rotates from the second groove end b of the arc-shaped groove b under the action of self pre-tightening force2Slide into the arc-shaped groove b, along with the rotation of the rotating part, the elastic supporting part 4 and the first groove end b of the arc-shaped groove b1and (3) leaning against, at the moment, the elastic supporting piece 4 and the rotating piece are in a hard contact state, the elastic supporting piece 4 bears resistance and cannot slide out of the arc-shaped groove b, the rotating piece starts to drive the adjusting piece 6 to rotate, and the process of unscrewing the adjusting piece 6 is completed. When the process of screwing the adjusting piece 6 is executed, the controller controls the driving part 1 to rotate reversely, the rotating piece starts to rotate anticlockwise, and after the rotating piece rotates for a certain angle, the elastic supporting piece 4 and the second groove end b of the arc-shaped groove b at the moment2Contact, rotating member driving the adjusting member via the resilient supporting member 46, and finishing the process of screwing the adjusting piece 6. When the adjusting part 6 is already in the tightening position, the driving part 1 continues to rotate, the adjusting part 6 cannot rotate any more, the resistance of the elastic supporting part 4 is greater than the pretightening force of the elastic supporting part 4, and the elastic supporting part 4 can move from the second groove end b of the arc-shaped groove b2And the inner slide out, the rotation of the elastic support 4 is stopped, so that the rotation of the adjusting member 6 is stopped.
For facilitating the elastic support 4 from the second slot end b of the arc-shaped slot b2sliding out of the second slot end b of the arc-shaped slot b2A chamfer is provided as shown in fig. 7. The first slot end b of the arc-shaped slot b1Without a chamfer, as shown in fig. 8, to prevent the resilient support 4 from coming out of the first slot end b of the arc-shaped slot b1And (6) sliding out.
when the elastic support member 4 is drivingly connected to the adjusting member 6, the adjusting member 6 and the elastic support member 4 are drivingly connected to each other through the connecting plate 5 for the convenience of installation. Specifically, the adjusting member 6 is in transmission connection with the connecting plate 5, and the elastic support member 4 is fixed on the connecting plate 5, for example, the adjusting member 6 is in transmission connection with the connecting plate 5 through a key, and the elastic support member 4 is in threaded fit with the connecting plate 5 to achieve fixed connection. Of course, other structures for realizing the transmission connection between the elastic supporting member 4 and the adjusting member 6 are also possible and are not limited to the above-mentioned embodiments.
When the rotating part is in transmission connection with the driving part 1, the rotating part is preferably selected to be a driven gear 14, and the driving part 1 is in transmission connection with the driven gear 14 through the driving gear 3. Specifically, the drive gear 3 and the driven gear 14 are engaged. Therefore, the size and the cost are reduced conveniently. For the convenience of installation, the exhaust valve further comprises a mounting plate 2, and the driving gear 3, the driven gear 14 and the driving component 1 are all mounted on the mounting plate 2. Specifically, the driving part 1 is located on one side of the mounting plate 2, and the driving gear 3 and the driven gear 14 are located on the other side of the mounting plate 2.
Among the above-mentioned discharge valve, also select to rotate piece and drive part 1 and adopt other transmission methods, for example belt drive etc. the embodiment of the utility model provides a do not limit to this.
The elastic support member 4 may be a ball plunger or other structures as long as sufficient supporting force and elastic force are ensured. In order to obtain materials and reduce the cost, the elastic supporting member 4 is preferably a ball plunger.
In the above exhaust valve, the adjusting member 6 is connected with the valve seat 11 in a sealing manner, and various structures exist as long as the sealing effect can be ensured in the movement process of the adjusting member 6. For the sake of simplicity of construction, the adjusting element 6 is preferably connected to the valve seat 11 in a sealing manner by a sealing ring 15. To the type of sealing washer 15, select according to actual need, for example sealing washer 15 is O type sealing washer, the embodiment of the utility model provides a do not limit to this.
in the exhaust valve, the shape and distribution of the exhaust branch are designed according to actual requirements. In order to shorten the exhaust branch, the exhaust branch is preferably selected to comprise a first exhaust section and a second exhaust section which are communicated and are mutually and vertically arranged; the first exhaust section is communicated with the valve cavity a, the axis of the first exhaust section is coaxial with or parallel to the axis of the valve cavity a, and the adjusting piece can be in sealing fit with the first exhaust section.
In the structure, the adjusting piece 6 can be in sealing fit with the first exhaust section, and the axis of the adjusting piece 6 and the axis of the first exhaust section are arranged in a collinear manner. When the adjusting element 6 is in sealing engagement with the first exhaust section, the adjusting element 6 blocks the second exhaust section. When the exhaust branch has a taper hole section, the taper hole section is located at the first exhaust section.
Above-mentioned discharge valve through the position of reasonable setting exhaust branch road and regulating part 6, has effectively shortened the exhaust branch road, has reduced the volume of exhaust branch road, and in practical application process, through the diameter of adjustment exhaust branch road, for example, the tip diameter of the taper hole section of selecting the exhaust branch road is less than 2mm etc. can realize that the volume of exhaust branch road is within 10 mu L.
In the practical application process, under the condition that the adjusting piece 6 is in sealing fit with the first exhaust section, the length of the first exhaust section can be shortened as much as possible, so that the whole exhaust branch is shortened to the greatest extent.
Preferably, the inlet axis of the valve chamber a and the outlet axis of the valve chamber a are arranged in parallel or in line. Thus, the flow path arrangement is effectively simplified, and the internal structure of the valve seat 11 is simplified. Of course, the inlet and outlet of the valve chamber a can be arranged in other ways, for example, the inlet axis of the valve chamber a and the outlet axis of the valve chamber a are relatively inclined, etc.
Furthermore, the inlet axis of the valve cavity a and the axis of the valve cavity a are arranged perpendicularly, i.e. the outlet axis of the valve cavity a and the axis of the valve cavity a are also arranged perpendicularly. When the axis of the adjusting member 6 and the axis of the valve chamber a are arranged in parallel or in line, the axis of the adjusting member 6 and the inlet axis of the valve chamber a are arranged perpendicularly.
The inlet and the outlet of the valve cavity a can be arranged at equal height or unequal height. In order to shorten the flow path and reduce the dead volume of the exhaust valve, the inlet and outlet of the valve chamber a are preferably arranged at the same height, as shown in fig. 3. Specifically, the inlet axis of the valve cavity a and the outlet axis of the valve cavity a are located at the same height position of the valve seat 11, and the axial direction of the valve seat 11 is the height direction of the valve seat 11. Furthermore, the bore of the inlet of the valve cavity a is equal to the bore of the outlet of the valve cavity a.
the shape of the valve cavity a is designed according to actual requirements. For example, the valve cavity a has a circular or square cross section. For the convenience of processing, the cross section of the valve cavity a is circular. In order to facilitate the liquid flow, as shown in fig. 5, the inlet of the valve chamber a is arranged along the tangential direction of the joint with the inner wall of the valve chamber a, and the outlet of the valve chamber a is arranged along the tangential direction of the joint with the inner wall of the valve chamber a.
The exhaust valve needs to be used in cooperation with a pressure sensor for detecting pressure, and further includes a pressure sensor 9 provided on the valve seat 11 for detecting pressure in the valve chamber a in order to shorten the flow path. It will be appreciated that the pressure sensor 9 senses the pressure of the fluid in the valve chamber a.
In the above structure, the pressure sensor 9 and the exhaust valve are constructed as a single body, thereby shortening the flow path, shortening the switching time of the mobile phase and the lag time of gradient elution, reducing the dead volume of the flow path, and saving the material and cost.
When the pressure sensor is used, whether the sample analyzer normally operates can be judged according to the pressure detected by the pressure sensor 9, and when the pressure is higher and lower, the sample analyzer needs to be maintained. In order to facilitate the user to know this information, the exhaust valve also comprises an alarm for generating an alarm depending on the pressure detected by the pressure sensor 9. Specifically, the alarm gives an alarm when the pressure detected by the pressure sensor 9 is greater than a first preset value and/or less than a second preset value.
In practical application, whether the exhaust valve exhausts or not is judged according to the pressure in the pipeline, so that the controller is preferentially selected to be connected with the pressure sensor 9 and control the driving part 1 to operate according to the pressure detected by the pressure sensor 9. Specifically, when the pressure detected by the pressure sensor 9 is less than a third preset value, indicating that air exhaust is required, the controller controls the driving part 1 to operate so as to move the adjusting part 6 to the second position; when the pressure detected by the pressure sensor 9 is not less than the third preset value, indicating that air exhaust is not required, the controller controls the operation of the driving part 1 to move the adjusting member 6 to the first position.
in order to facilitate the knowledge of whether the adjusting member 6 is moved between the first position and the second position, the exhaust valve further comprises a detector connected to the controller for detecting the position of the adjusting member 6. Specifically, the detector is used for detecting the displacement of the adjusting member 6 when the driving member 1 drives the adjusting member 6 to move; the detector is used for detecting the rotation angle of the adjusting member 6 when the driving member 1 drives the adjusting member 6 to rotate.
The type of the detector is selected according to actual needs. For the convenience of detection, the detector is preferably a photosensor. Specifically, the photoelectric sensor comprises an optical coupler light-emitting piece 12 and an optical coupler light-receiving piece 13 which are matched for use, wherein one of the optical coupler light-emitting piece and the optical coupler light-receiving piece is fixedly connected with the adjusting piece 6, and in order to facilitate installation, the optical coupler light-emitting piece and the optical coupler light-receiving piece are preferably fixed on the mounting plate 2 and are fixedly connected with the adjusting piece 6 through the mounting plate 2; the other is fixed on the rotating member. For the convenience of detection, the optical coupler light-emitting piece 12 is fixed on the mounting plate 2, and the optical coupler light-receiving piece 13 is fixed on the rotating piece.
When the adjusting piece 6 is in the process of screwing up the adjusting piece 6, the photoelectric sensor detects that the adjusting piece 6 is in the screwing-up position and feeds back the position to the controller, and the controller stops driving of the driving part 1; when the adjusting part 6 is in the process of unscrewing, the photoelectric sensor detects that the adjusting part 6 is in the unscrewing position and feeds back the position to the controller, and the controller stops driving the driving part 1.
in the exhaust valve, the driving member 1 may be a motor, a rotary cylinder, or the like. In order to simplify the structure and reduce the volume, the driving member 1 is preferably a motor.
based on above-mentioned embodiment provides discharge valve, the embodiment of the utility model provides a still provides a sample analyzer, this sample analyzer includes discharge valve, this discharge valve is above-mentioned embodiment discharge valve.
Since the exhaust valve provided by the above embodiment has the above technical effects, and the sample analyzer has the above exhaust valve, the sample analyzer also has corresponding technical effects, and details are not repeated herein.
To the concrete type of sample analysis appearance, select according to actual need, for example the sample analysis appearance is blood sample analysis appearance, the embodiment of the utility model provides a do not limit to this.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. An exhaust valve, comprising:
The valve seat is internally provided with a valve cavity and an exhaust branch communicated with the valve cavity;
The adjusting piece can extend into the exhaust branch and is in sealing fit with the exhaust branch;
The driving component drives the adjusting piece to move so as to enable the adjusting piece to switch on or off the exhaust branch;
A controller for controlling the operation of the driving part;
the adjusting piece is connected with the valve seat in a sealing mode, and the adjusting piece cuts off the exhaust branch when the driving part drives the adjusting piece to move to the first position; when the driving part drives the adjusting piece to move to the second position, the adjusting piece conducts the exhaust branch.
2. The discharge valve according to claim 1, wherein said discharge branch has a tapered bore section, and said adjustment member sealingly engages said discharge branch at said tapered bore section via a taper.
3. The discharge valve according to claim 1, wherein said adjustment member is threadably engaged with said valve seat.
4. The discharge valve according to claim 3, wherein said driving member drives said regulating member to rotate by means of a moving mechanism including a rotating member and an elastic supporting member;
The end face of the rotating part is provided with an arc-shaped groove, and the elastic supporting part can deform along the depth direction of the arc-shaped groove; one of the rotating piece and the elastic supporting piece is in transmission connection with the driving part, and the other one of the rotating piece and the elastic supporting piece is in transmission connection with the adjusting piece;
When the elastic supporting piece is in a first state, the elastic supporting piece is in contact with the end face of the rotating piece, which is provided with the arc-shaped groove; when the elastic support piece is in a second state, the elastic support piece is positioned in the arc-shaped groove and is in sliding fit with the arc-shaped groove; when the elastic support piece is in a third state, the elastic support piece is abutted against the first groove end of the arc-shaped groove; when the elastic support piece is in the fourth state, the elastic support piece is abutted against the second groove end of the arc-shaped groove.
5. The discharge valve according to claim 4, wherein said resilient support is a ball plunger.
6. The exhaust valve according to claim 4 wherein said rotating member is drivingly connected to said drive member, said rotating member being a driven gear, said drive member being drivingly connected to said driven gear through a drive gear;
The exhaust valve further comprises a mounting plate for mounting the driving gear, the driven gear and the driving part.
7. The discharge valve according to claim 1, wherein said discharge branch comprises a first discharge section and a second discharge section which are communicated and arranged perpendicular to each other; wherein, first exhaust section with the valve chamber intercommunication, the axis of first exhaust section with the axis collineation of valve chamber or parallel, the regulating part can with first exhaust section sealing fit.
8. The vent valve of claim 1, wherein the inlet axis of the valve chamber and the outlet axis of the valve chamber are disposed parallel or collinear, and wherein the inlet axis of the valve chamber and the outlet axis of the valve chamber are at the same height position of the valve seat.
9. The discharge valve according to claim 1, further comprising:
A pressure sensor arranged on the valve seat and used for detecting the pressure in the valve cavity,
An alarm for giving an alarm according to the pressure detected by the pressure sensor;
The controller is connected with the pressure sensor and controls the driving part to operate according to the pressure detected by the pressure sensor.
10. The vent valve according to any of claims 1-9, further comprising a detector connected to the controller; the detector is used for detecting the displacement of the adjusting piece when the driving part drives the adjusting piece to move; when the driving part drives the adjusting part to rotate, the detector is used for detecting the rotating angle of the adjusting part.
11. A sample analyser comprising an exhaust valve, wherein the exhaust valve is according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920427392.8U CN209781718U (en) | 2019-03-29 | 2019-03-29 | Exhaust valve and sample analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920427392.8U CN209781718U (en) | 2019-03-29 | 2019-03-29 | Exhaust valve and sample analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209781718U true CN209781718U (en) | 2019-12-13 |
Family
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| CN201920427392.8U Active CN209781718U (en) | 2019-03-29 | 2019-03-29 | Exhaust valve and sample analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022105672A1 (en) * | 2020-11-23 | 2022-05-27 | 南京菡束环保设备有限公司 | Concentrated-water regulation valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022105672A1 (en) * | 2020-11-23 | 2022-05-27 | 南京菡束环保设备有限公司 | Concentrated-water regulation valve |
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