Absolute positioning multi-channel rotary cutting valve device

Abstract

The utility model relates to the technical field of water quality monitoring, in particular to an absolute positioning multichannel rotary cutting valve device which comprises a wiring module used for connecting an output pipeline and a plurality of input pipelines, a conversion module used for controlling the output pipeline and the plurality of input pipelines to be connected and disconnected, and a driving module used for driving the conversion module to act. And the detection module is used for detecting the conduction state of the conversion path of the conversion module. The device is simple in structure, reasonable in design, convenient to control, capable of achieving closed-loop control of on-off control, high in anti-interference capacity, high in control precision, capable of achieving switching between different port positions without crosstalk, capable of achieving multichannel absolute positioning flow control, capable of achieving accurate liquid taking or liquid discharging, capable of guaranteeing the accuracy of monitoring results and capable of improving the working efficiency. The device has the characteristics of wide-temperature working capability, wear resistance, strong acid and strong alkali chemical corrosion resistance, long life cycle and large working pressure, and has strong applicability to complex use scenes of various water quality equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to water quality monitoring technical field, concretely relates to an absolute positioning's multichannel rotary valve device. BACKGROUND

[0002] The multichannel valve is a key component of the digestion unit in the chemical water quality analyzer, and the water sample in the analyzer digestion tube needs to pass through the multichannel valve node control to connect different reagent bottles, water samples or waste liquid barrels for liquid inlet, mixing, digestion emptying, cleaning and the like.

[0003] The diaphragm valve is mostly combined with multiple diaphragm valves on the same valve island, and each valve is independently controlled to connect or disconnect. The multichannel rotary valve switches the connection of the central valve port and the other valve ports through the rotary valve core, and the flow path is temporarily connected with the passing valve port when switching to the non-adjacent valve port, which reduces the monitoring accuracy. At the same time, the valve island needs to be provided with a multiple diaphragm valve core control module, which results in a large volume, low integration and numerous wire harnesses. The multichannel rotary valve also has the disadvantages of complex structure, difficult installation, large space occupation and the like, which cannot meet the miniaturization demand of the water quality analyzer, and is easily disturbed by the environment, resulting in inaccurate liquid taking or liquid discharging and poor monitoring effect. UTILITY MODEL CONTENTS

[0004] The utility model wants to solve the technical problem that the existing multichannel valve structure is relatively complex, large in size, low in integration, numerous in wire harnesses, difficult to install and use, and easily disturbed by the environment during work, resulting in inaccurate liquid taking or liquid discharging and poor monitoring effect.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a kind of absolute positioning's multichannel rotary valve device, including the wiring module for connecting output pipeline and several input pipelines, the conversion module for controlling the on-off of output pipeline and several input pipelines, the drive module for driving the action of conversion module, and the detection module for detecting the conduction state of the conversion path of conversion module, the conversion part of conversion module is equipped with the conversion path for connecting output pipeline and input pipeline by wiring module, the conversion part of conversion module is drivingly connected with the output end of drive module, the detection part of detection module is drivingly connected with the conversion part of conversion module, the conversion path of conversion module is rotated and switched to connect corresponding input pipeline in output pipeline and several input pipelines when drive module is driven.

[0006] The utility model discloses simple structure, reasonable in design can realize the on-off control between output pipeline and corresponding input pipeline of several input pipelines and the detection of the conduction state of the conversion path of the conversion module and a series of functions, and the automation degree is high, and the control is convenient, can realize the closed loop control of on-off control, and the anti -interference ability is strong, and the control precision is high, and can realize the switching between different ports without crosstalk, realizes the multichannel absolute positioning flow control, can realize accurate liquid taking or liquid discharging, guarantees the accuracy of monitoring result, has wide temperature working ability, wear resistance, strong acid, strong alkali chemical corrosion, long life cycle, the characteristics of big working pressure, and the applicability is strong to the complex use scene of various water quality equipment.

[0007] As preferred, the conversion module is provided with a conversion head, the conversion path of the conversion module is arranged on an end face of the conversion head close to the wiring module, one end face of the conversion head is in close sliding contact with the end face of the wiring module where the medium path is exposed to the outside, and the conversion path is provided with a liquid passing hole or a liquid passing groove.

[0008] As preferred, the wiring module is provided with a valve head, the valve head is provided with through holes for the medium to pass through one by one corresponding to the output pipeline and the several input pipelines, the through holes are exposed to the outside by the end face of the valve head close to the conversion module, and the through hole end opening is in communication with the corresponding through hole end opening through the conversion path of the conversion module when the conversion path of the conversion module is in action.

[0009] As preferred, a grinding head is arranged between the end face of the valve head close to the conversion module and the conversion module to reduce the resistance when the conversion module is in action and reduce the switching disturbance, and the grinding head is installed by static friction force.

[0010] As preferred, a clamping module is further arranged to drive the conversion module and the wiring module to be in close contact, one end of the clamping module is arranged in position, the other end of the clamping module is in transmission connection with the conversion part of the conversion module and drives the conversion part of the conversion module to be in close contact with the end face of the medium path of the wiring module exposed to the outside.

[0011] As preferred, the clamping module is a clamping spring.

[0012] As preferred, the driving module comprises a driving motor and a shaft coupling, the conversion module is provided with a conversion head and a connecting shaft, the conversion head is limitingly installed on the connecting shaft, the shaft coupling is provided with a transmission guide groove, the connecting shaft is provided with a matching transmission guide protrusion, the transmission guide protrusion is installed in the transmission guide groove in a clearance fit mode, the gap tolerance value between the transmission guide protrusion and the transmission guide groove is set to be adjustable, the driving motor is in transmission connection with the connecting shaft through the shaft coupling, and the conversion passage of the conversion module is in communication with the corresponding input pipeline among the output pipeline and the input pipelines when the driving motor is driven.

[0013] As preferred, the detection module comprises a code disc and a sensing plate, the sensing plate is fixedly arranged, the code disc is in transmission connection with the conversion part of the conversion module, the sensing plate is provided with a plurality of sensors, the code disc is provided with corresponding apertures, and the apertures of the code disc and the sensors of the sensing plate are oppositely arranged.

[0014] As preferred, the wiring module and the conversion module are both made of high-pressure-resistant, high-temperature-resistant, wear-resistant and strong chemical corrosion-resistant materials.

[0015] As preferred, the valve body is further provided with the wiring module, the conversion module, the driving module and the detection module.

[0016] The beneficial technical effects of the utility model include:

[0017] The utility model discloses a simple structure, reasonable in design, can realize the on-off control between the output pipeline and the corresponding input pipeline among the input pipelines and a series of functions such as the detection of the conduction state of the conversion passage of the conversion module, high degree of automation, convenient control, can realize the closed loop control of on-off control, strong anti-interference ability, high control precision, and can realize switching between different ports without crosstalk, realize multi-channel absolute positioning flow control, can realize accurate liquid taking or liquid discharging, ensure the accuracy of monitoring result, have wide temperature working ability, wear resistance, strong acid, strong alkali chemical corrosion, long life cycle, work pressure big characteristics, and the applicability of complex use scene of various water quality equipment is strong.

[0018] Other features and advantages of the utility model will be disclosed in the following specific embodiment and drawings in detail. DRAWINGS

[0019] The utility model will be further explained in connection with the drawings:

[0020] ATTACHMENT Figure 1 It is a sectional view of an absolute positioning multi-channel rotary cutting valve device;

[0021] ATTACHMENT Figure 2 It is anFigure 1 A local enlarged view at the center of A;

[0022] Figure 1 is a schematic diagram of a multi-channel rotary valve device according to the present application; Figure 3 Figure 2 is an exploded view of part of the components of a multi-channel rotary valve device according to the present application; Figure 1 Figure 3 is a schematic diagram of a multi-channel rotary valve device according to the present application; Figure 4 is an exploded view of part of the components of a multi-channel rotary valve device according to the present application.

[0023] Figure 5 is a schematic diagram of a multi-channel rotary valve device according to the present application. Figure 4 Figure 6 is an exploded view of part of the components of a multi-channel rotary valve device according to the present application. Figure 2 Figure 7 is a schematic diagram of a multi-channel rotary valve device according to the present application. DETAILED DESCRIPTION

[0024] The technical solutions of the embodiments of the present application will be explained and described below in conjunction with the accompanying drawings of the embodiments of the present application. However, the following embodiments are only preferred embodiments of the present application, and are not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor also belong to the protection scope of the present application.

[0025] In the following description, the appearance of terms such as "inner", "outer", "upper", "lower", "left", "right", etc. only indicate the orientation or positional relationship for the convenience of describing the embodiments and simplifying the description, and are not indicative or suggestive of the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] Referring to the accompanying drawings, Figure 1 The present embodiment discloses a multi-channel rotary valve device with absolute positioning, comprising a wiring module 1 for connecting an output pipeline and a plurality of input pipelines, a switching module 2 for controlling the on-off of the output pipeline and the plurality of input pipelines, a driving module 3 for driving the switching module 2 to act, and a detection module 4 for detecting the conduction state of the switching path 21 of the switching module 2. The following will be described in detail in conjunction with the accompanying drawings.

[0027] Referring to the accompanying drawings, Figure 1 to the accompanying drawings, Figure 4 In the present embodiment, the switching part of the switching module 2 is provided with a switching path 21 for connecting the output pipeline and the input pipeline through the wiring module 1, the switching part of the switching module 2 is in transmission connection with the output end of the driving module 3, the detection part of the detection module 4 is in transmission connection with the switching part of the switching module 2, and the switching path 21 of the switching module 2 rotates to switch the connection of the output pipeline and the corresponding input pipeline of the plurality of input pipelines when the driving module 3 is driven. In the present embodiment, the through hole 12 corresponding to the output pipeline is arranged in the center, and the through hole 12 corresponding to the plurality of input pipelines is arranged around, which facilitates the arrangement of the pipeline, reduces the space occupation of the multi-channel rotary valve device, and of course, in actual work, the output pipeline can also be provided with multiple connections, which can be used for multiple devices to take multiple liquids, has high integration and strong versatility.

[0028] In the working of the embodiment, the structure is simple, the design is reasonable, a series of functions such as on-off control between the output pipeline and the corresponding input pipeline of the plurality of input pipelines and detection of the conduction state of the conversion passage 21 of the conversion module 2 can be realized, the automation degree is high, the control is convenient, the closed-loop control of on-off control can be realized, the anti-interference ability is strong, the control precision is high, and the cross talk caused by switching between different ports can be avoided, absolute positioning flow control of multiple channels can be realized, precise liquid taking or liquid discharging can be realized, the accuracy of the monitoring result is ensured, the wide temperature working ability, wear resistance, strong acid and alkali chemical corrosion resistance, long life cycle, high working pressure, and strong applicability to complex use scenes of various water quality equipment are achieved.

[0029] Preferably, the conversion module 2 is provided with a conversion head 22, the conversion passage 21 of the conversion module 2 is arranged on an end face of the conversion head 22 close to the wiring module 1, one end face of the conversion head 22 is in close sliding contact with an end face of the wiring module 1 where the medium passage is exposed to the outside, and the conversion passage 21 is provided with a liquid passing hole or a liquid passing groove. Preferably, the conversion module 2 is also provided with a connecting shaft 23, the connecting shaft 23 is limitingly connected with the conversion head 22 through a limiting assembly, the worn conversion head 22 can be conveniently replaced, the use cost can be reduced, and the maintenance efficiency can be improved.

[0030] In the specific implementation, the wiring module 1 is provided with a valve head 11, the valve head 11 is provided with through holes 12 for the medium to pass through in one-to-one correspondence with the output pipeline and the plurality of input pipelines, one end openings of the plurality of through holes 12 are exposed to the outside by an end face of the valve head 11 close to the conversion module 2, and the one end openings of the through holes 12 are in communication with the one end openings of the corresponding through holes 12 through the conversion passage 21 of the conversion module 2 when the conversion passage 21 of the conversion module 2 is actuated in place.

[0031] As a further improvement of the embodiment, a grinding head 13 is further arranged between the end face of the valve head 11 close to the conversion module 2 and the conversion module 2 for reducing the resistance when the conversion module 2 is actuated to reduce switching disturbance, and a through hole 131 for the medium to pass through in one-to-one correspondence with the output pipeline and the plurality of input pipelines is also arranged on the grinding head 13, preferably, the grinding head 13 is limitingly installed through a limiting assembly, and can also be limitingly installed through a static friction force.

[0032] Preferably, the top pressing module 5 is arranged to drive the conversion module 2 to tightly contact with the wiring module 1, one end of the top pressing module 5 is limitingly arranged, in the specific implementation, the thrust ball bearing 7 is further included, so that one end of the top pressing module 5 is limitingly arranged in the valve body 6 through the thrust ball bearing 7, the stable pre-tightening force can be maintained when the conversion head 22 rotates, and the torsion does not occur, the other end of the top pressing module 5 is drivingly connected with the conversion part of the conversion module 2 and drives the conversion part of the conversion module 2 to tightly contact with the end face of the wiring module 1 where the medium passage is exposed to the outside, in the specific implementation, the top pressing module 5 can be provided as a top pressing spring.

[0033] Preferably, the driving module 3 includes the driving motor 31 and the shaft coupling 32, the conversion module 2 is provided with the conversion head 22 and the connecting shaft 23, the conversion head 22 is limitingly installed on the connecting shaft 23, the shaft coupling 32 is provided with a transmission guide groove, the connecting shaft 23 is provided with a matching transmission guide protrusion, the transmission guide protrusion is installed in the transmission guide groove in the form of clearance fit, the gap tolerance value between the transmission guide protrusion and the transmission guide groove is set to be adjustable, in the specific implementation, the gap size is controlled by the machining precision of the parts, so that the positioning accuracy of the conversion head 22 during rotation can be ensured, the driving motor 31 is drivingly connected with the connecting shaft 23 through the shaft coupling 32, and the conversion passage 21 of the conversion module 2 is communicated with the corresponding input pipeline among the output pipeline and the plurality of input pipelines when the driving motor 31 is driven.

[0034] In the embodiment, the valve body 6 is further included, the wiring module 1, the conversion module 2, the driving module 3 and the detection module 4 are all installed on the valve body 6, in the working process, the wiring module 1 is fixedly installed on one end of the valve body 6, the conversion head 22 is rotatably arranged in the valve body 6, the driving module 3 is fixedly installed on the other end of the valve body 6, so that the conversion head 22 is coaxially arranged with the driving part of the driving module 3, the grinding head 13 is limitingly installed between the conversion head 22 and the wiring module 1, so that one end face of the grinding head 13 tightly contacts with the wiring module 1 to realize the sealing, and the other end face of the grinding head 13 slidably and tightly contacts with the conversion head 22, so that the conversion head 22, the top pressing module 5 and the driving part of the driving module 3 are coaxially arranged, at this time, the top pressing module 5 can drive the conversion head 22 to tightly contact with the grinding head 13, and the swing effect of the conversion head 22 during rotation can be isolated due to the pre-tightening force of the top pressing module 5, so that the control accuracy is improved.

[0035] Preferably, the detection module 4 comprises a code disc 41 and a sensing plate 42, the sensing plate 42 is fixedly arranged, the code disc 41 is drivingly connected with the conversion position of the conversion module 2, the sensing plate 42 is provided with a plurality of sensors, the code disc 41 is provided with corresponding apertures, the apertures of the code disc 41 and the sensors of the sensing plate 42 are oppositely arranged, the code disc 41 is provided with absolute coding, in specific implementation, the sensors can be four photoelectric sensors symmetrically installed in pairs, the single code disc 41 can realize high-precision absolute positioning, preferably, a semicircular groove can be formed on the working surface of the valve body 6, and a matching positioning protrusion is arranged on the sensing plate 42, so that the sensing plate 42 is conveniently and accurately installed, and the code disc 41 and the sensor are accurately positioned.

[0036] Preferably, the wiring module 1 and the conversion module 2 are made of high-pressure-resistant, high-temperature-resistant, wear-resistant and strong chemical corrosion-resistant materials, have excellent chemical corrosion resistance and wear-resistant and aging-resistant mechanical properties, and can improve the service life.

[0037] The beneficial technical effects of the embodiment include: the structure of the utility model is simple, reasonable in design, can realize a series of functions such as on-off control between the output pipeline and the corresponding input pipeline in the plurality of input pipelines, detection of the conduction state of the conversion path of the conversion module, high automation degree, convenient control, closed-loop control of on-off control, strong anti-interference ability, high control precision, switching between different ports without crosstalk, absolute positioning flow control, precise liquid taking or liquid discharging, high accuracy of monitoring results, wide temperature working ability, wear resistance, strong acid and alkali chemical corrosion resistance, long life cycle, high working pressure, and strong applicability to complex use scenes of various water quality equipment.

[0038] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, and those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific embodiment. Any modification of the function and structural principle of the utility model without deviation will be included in the scope of claims.

Claims

1. An absolute positioned multi-pass rotary cut valve apparatus, characterized by: The application relates to a switch module for switching a plurality of input lines to an output line, comprising a wiring module (1) for connecting the output line and the plurality of input lines, a switching module (2) for controlling the switching of the output line and the plurality of input lines, a driving module (3) for driving the switching module (2) to act, and a detection module (4) for detecting the on-off state of the switching path (21) of the switching module (2), wherein the switching part of the switching module (2) is provided with a switching path (21) for connecting the output line and the input line through the wiring module (1), the switching part of the switching module (2) is in transmission connection with the output end of the driving module (3), the detection part of the detection module (4) is in transmission connection with the switching part of the switching module (2), and the switching path (21) of the switching module (2) is rotated to switch the corresponding input line of the output line and the plurality of input lines when the driving module (3) is driven.

2. An absolutely positioned multi-pass rotary cut valve apparatus as defined in claim 1, wherein: The switching module (2) is provided with a switching head (22), the switching path (21) of the switching module (2) is arranged on one end face of the switching head (22) close to the wiring module (1), one end face of the switching head (22) is in close sliding contact with the end face of the wiring module (1) on which the medium path is exposed to the outside, and the switching path (21) is provided with a liquid hole or a liquid groove.

3. An absolutely positioned multi-pass rotary cut valve apparatus as defined in claim 1, wherein: The wiring module (1) is provided with a valve head (11), the valve head (11) is provided with a through hole (12) for the medium to pass through in one-to-one correspondence with the output line and the plurality of input lines, the end openings of the plurality of through holes (12) are exposed to the outside by one end face of the valve head (11) close to the switching module (2), and the end openings of the through holes (12) are in communication with the end openings of the corresponding through holes (12) through the switching path (21) of the switching module (2) when the switching path (21) of the switching module (2) is actuated to the position.

4. An absolutely positioned multi-pass rotary cut valve apparatus as defined in claim 3, wherein: A grinding head (13) is further arranged between the one end face of the valve head (11) close to the switching module (2) and the switching module (2) for reducing the resistance when the switching module (2) is actuated to reduce the switching disturbance, and the grinding head (13) is installed by static friction force.

5. An absolutely positioned multi-pass rotary cut valve apparatus as defined in claim 1, wherein: A clamping module (5) for driving the switching module (2) to tightly contact with the wiring module (1) is further included, one end of the clamping module (5) is limitingly arranged, the other end of the clamping module (5) is in transmission connection with the switching part of the switching module (2) and drives the switching part of the switching module (2) to tightly contact with the end face of the wiring module (1) on which the medium path is exposed to the outside.

6. An absolutely positioned multi-pass rotary cut valve apparatus as defined in claim 5, wherein: The clamping module (5) is provided as a clamping spring.

7. An absolutely positioned multi-pass rotary cut valve apparatus as defined in claim 1, wherein: The driving module (3) comprises a driving motor (31) and a coupling (32), the conversion module (2) is provided with a conversion head (22) and a connecting shaft (23), the conversion head (22) is limitingly installed on the connecting shaft (23), the coupling (32) is provided with a transmission guide groove, the connecting shaft (23) is provided with a matched transmission guide protrusion, the transmission guide protrusion is installed in the transmission guide groove in a clearance fit manner, the gap tolerance value between the transmission guide protrusion and the transmission guide groove is set to be adjustable, the driving motor (31) is in transmission connection with the connecting shaft (23) through the coupling (32), and the conversion passage (21) of the conversion module (2) is in communication with the corresponding input pipeline among the output pipeline and a plurality of input pipelines when the driving motor (31) drives.

8. An absolutely positioned multi-pass rotary cut valve apparatus as defined in claim 1, wherein: The detection module (4) comprises a code disc (41) and a sensing plate (42), the sensing plate (42) is fixedly arranged, the code disc (41) is in transmission connection with a conversion part of the conversion module (2), a plurality of sensors are arranged on the sensing plate (42), corresponding apertures are arranged on the code disc (41), the apertures of the code disc (41) and the sensors of the sensing plate (42) are oppositely arranged, and the code disc (41) is set to absolute coding.

9. An absolutely positioned multi-pass rotary cut valve apparatus as defined in claim 1, wherein: The wiring module (1) and the conversion module (2) are both made of high-pressure-resistant, high-temperature-resistant, wear-resistant and strong chemical corrosion-resistant materials.

10. An absolutely positioned multi-pass rotary cut valve apparatus as defined in claim 1, wherein: The valve body (6) is further included, and the wiring module (1), the conversion module (2), the driving module (3) and the detection module (4) are all installed on the valve body (6).

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