CN219866582U - Valve position feedback connecting device and diaphragm valve - Google Patents
Valve position feedback connecting device and diaphragm valve Download PDFInfo
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- CN219866582U CN219866582U CN202320353005.7U CN202320353005U CN219866582U CN 219866582 U CN219866582 U CN 219866582U CN 202320353005 U CN202320353005 U CN 202320353005U CN 219866582 U CN219866582 U CN 219866582U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000002829 reductive effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 4
- 230000002452 interceptive effect Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012369 In process control Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000010965 in-process control Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a valve position feedback connection device and a diaphragm valve. The valve position feedback connecting device comprises a valve body, a valve rod, a transmission mechanism and a valve position receiving piece, wherein the valve rod moves in the valve body in a straight line, the transmission mechanism is connected with the valve rod, and the valve position receiving piece is connected with the transmission mechanism. The valve position receiving part is arranged on the valve body, the transmission mechanism comprises a driving engagement assembly and a driven engagement assembly, the driving engagement assembly is fixed on the valve rod, the driving engagement assembly is engaged with the driven engagement assembly and is in transmission connection, and the driven engagement assembly is fixed on the rotating part of the valve position receiving part; the valve rod is used for driving the driving engagement assembly to linearly move so that the driving engagement assembly is used for driving the driven engagement assembly and the rotating part of the valve position receiving part to rotate. Because the driving engagement assembly is in engagement connection with the driven engagement assembly to realize transmission connection, transmission virtual positions between the driving engagement assembly and the driven engagement assembly are avoided, errors of transmitted valve position signals are reduced, and monitoring accuracy of the valve position receiving piece is improved.
Description
Technical Field
The utility model relates to the technical field of switching valves, in particular to a valve position feedback connecting device and a diaphragm valve.
Background
In process control, particularly in the control of some corrosive process media, it is often desirable to employ diaphragm valves to achieve automatic regulation and rapid shut-off of the process media flow. The valve rod is driven by the driving mechanism to axially move so as to realize the opening and closing actions of the valve. In order to monitor the position of the valve, the rotating part of the potentiometer is connected to the valve rod, and the rotating part of the potentiometer is driven to rotate when the valve rod moves axially, so that the potentiometer outputs the position of the valve in a signal mode.
In the prior art, for example, the utility model patent application with the application number of CN200910309507.4 is applied, one end of a connecting rod is fixedly connected with a valve rod through a fixing frame, the second end of the connecting rod is slidably arranged in a sliding groove of a feedback rod, the feedback rod is connected with a rotating part of a potentiometer, and the second end of the connecting rod is driven to slide in the sliding groove when the valve rod axially moves, so that the feedback rod drives the rotating part of the potentiometer to rotate, and then the potentiometer outputs the position of the valve through signals.
However, in order to avoid the second end of the connecting rod to be blocked in the sliding groove, a gap exists between the second end of the connecting rod and the inner wall of the sliding groove, so that a transmission virtual position exists between the connecting rod and the feedback rod, and further, the transmitted valve position signal error is larger, and the accuracy of valve position detection is reduced.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a valve position feedback connection device and a diaphragm valve for inhibiting valve position signal errors and further improving the accuracy of valve position detection.
The aim of the utility model is realized by the following technical scheme:
the valve position feedback connecting device comprises a valve body, a valve rod, a transmission mechanism and a valve position receiving part, wherein the valve rod moves in the valve body in a straight line manner, the transmission mechanism is connected with the valve rod, the valve position receiving part is connected with the transmission mechanism, the valve position receiving part is arranged on the valve body, the transmission mechanism comprises a driving engagement assembly and a driven engagement assembly, the driving engagement assembly is fixedly connected with the valve rod, the driving engagement assembly is engaged with the driven engagement assembly and is in transmission connection, and the driven engagement assembly is fixedly connected with a rotating part of the valve position receiving part; the valve rod is used for driving the driving engagement assembly to linearly move so that the driving engagement assembly is used for driving the driven engagement assembly and the rotating part of the valve position receiving part to synchronously rotate.
In some embodiments, the driving engagement assembly includes a linear motion coupling member fixedly connected to the valve stem and a first engagement member fixedly connected to the linear motion coupling member, the first engagement member engaging and drivingly connected to the driven engagement assembly.
In some of these embodiments, the first engagement member is a linear rack.
In some embodiments, the driven engagement assembly includes a rotational coupling member having a first end fixedly coupled to the rotational portion of the valve position receiver and a second engagement member fixedly coupled to a second end of the rotational coupling member and engaged with and drivingly coupled to the driving engagement assembly.
In some of these embodiments, the second engagement member is an arcuate rack.
In some embodiments, the valve position receiving member is fixedly connected to an outer side surface of the valve body, the valve body is provided with a clearance hole, and the rotary connecting member is arranged through the clearance hole.
In some embodiments, the driving mechanism further comprises a connecting seat, the connecting seat is fixedly connected to the valve rod, and the active engagement assembly is fixedly connected to the connecting seat, so that the active engagement assembly is fixedly connected to the valve rod through the connecting seat.
In some embodiments, the connection seat is fixedly sleeved on the valve rod.
In some of these embodiments, the valve position receiver is a transponder or a positioner.
A diaphragm valve comprising a valve position feedback connection arrangement as described in any one of the embodiments above.
Compared with the prior art, the utility model has at least the following advantages:
according to the valve position feedback connecting device, when the valve rod moves in the valve body in a linear manner, the valve rod drives the driving meshing assembly to move in a linear manner, so that the driving meshing assembly and the driven meshing assembly are in meshing connection for transmission, the driven meshing assembly rotates around the valve position receiving piece, the driven meshing assembly drives the rotating part of the valve position receiving piece to rotate, further, circuit parameters of the valve position receiving piece are changed, and the valve position receiving piece outputs a valve position in a signal mode. The driving engagement assembly and the driven engagement assembly are in engagement connection to realize transmission connection, so that gaps are avoided at the connection positions of the driving engagement assembly and the driven engagement assembly, transmission virtual positions between the driving engagement assembly and the driven engagement assembly are avoided, namely, transmission virtual positions of a transmission mechanism are avoided, errors of transmitted valve position signals are reduced, and monitoring accuracy of valve position receiving pieces is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a diaphragm valve according to an embodiment;
FIG. 2 is a schematic view of a partial structure of the diaphragm valve shown in FIG. 1;
FIG. 3 is a partial schematic view of the diaphragm valve of FIG. 1 in another state;
fig. 4 is a partial schematic structural view of the diaphragm valve shown in fig. 1 in yet another state.
Reference numerals: 10-diaphragm valve; 100-valve position feedback connection means; 110-valve body; 120 valve stems; 130-a transmission mechanism; 130 a-an active engagement assembly; 131-a direct-acting connector; 132-a first engagement member; 130 b-a driven engagement assembly; 133-a rotational connection; 134-a second engagement member; 130 c-a connection base; 140-valve position receiver; 300-drive means.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in FIG. 1, an embodiment of a diaphragm valve 10 includes a valve position feedback linkage 100 and an actuator 300, the actuator 300 configured to actuate a valve stem 120 of the valve position feedback linkage 100 for axial movement. It is understood that the drive device 300 may be a cylinder, motor, turntable, or other drive device 300 as is known.
As shown in fig. 1 and 2, in some embodiments, the valve position feedback connection device 100 includes a valve body 110, a valve rod 120, a transmission mechanism 130, and a valve position receiving member 140, wherein the valve rod 120 is disposed in the valve body 110, the valve rod 120 is further fixedly connected to a power output end of a driving device 300, the driving device 300 is used for driving the valve rod 120 to move axially in the valve body 110, that is, driving the valve rod 120 to move linearly in the valve body 110, the transmission mechanism 130 is connected to the valve rod 120, and the valve position receiving member 140 is connected to the transmission mechanism 130, so that the position of the valve rod 120 is fed back to the valve position receiving member 140 through the transmission mechanism 130.
Further, as shown in fig. 2, the valve position receiver 140 is mounted on the valve body 110, the transmission mechanism 130 includes a driving engagement assembly 130a and a driven engagement assembly 130b, the driving engagement assembly 130a is fixedly connected to the valve rod 120, so that the valve rod 120 and the driving engagement assembly 130a synchronously move linearly, the driving engagement assembly 130a is engaged with and in driving connection with the driven engagement assembly 130b, and the driven engagement assembly 130b is fixedly connected to the rotating portion of the valve position receiver 140. The valve rod 120 is used for driving the driving engagement assembly 130a to linearly move, so that the driving engagement assembly 130a is used for driving the driven engagement assembly 130b and the rotating part of the valve position receiver 140 to synchronously rotate, and the transmission mechanism 130 is in a meshing transmission structure, that is, the valve rod 120 and the valve position receiver 140 are transmitted through meshing transmission.
As shown in fig. 2 to 4, in the present embodiment, when the valve rod 120 moves linearly, i.e. axially, the valve rod 120 drives the driving engagement assembly 130a to move linearly, so that the driving engagement assembly 130a drives the driven engagement assembly 130b to rotate around the valve position receiving member 140 through the engagement connection, and the driven engagement assembly 130b drives the rotating portion of the valve position receiving member 140 to rotate, so that the circuit parameters of the valve position receiving member 140, such as current, voltage, resistance, etc., are changed, and the valve position receiving member 140 outputs the valve position as a signal.
It is understood that the valve receiver 140 may be a transponder, potentiometer, angle sensor or other valve receiver 140 having a rotating portion as is known.
It should be noted that, the method for receiving the signal by the valve position receiving element 140 and the method for outputting the signal belong to the prior art, and the present utility model only protects the structure and the position connection relationship of the valve position feedback connection device 100 within the scope of the present utility model. Therefore, the method for receiving the signal by the valve position receiving element 140, the method for outputting the signal by the valve position receiving element 140, the specific structure and working process of the valve position receiving element 140, etc. are not described in detail in the present utility model.
In the valve position feedback connection device 100, when the valve rod 120 is linearly moved in the valve body 110, the valve rod 120 drives the driving engagement assembly 130a to linearly move, so that the driving engagement assembly 130a and the driven engagement assembly 130b are in engagement connection to drive the driven engagement assembly 130b to rotate around the valve position receiving member 140, so that the driven engagement assembly 130b drives the rotating portion of the valve position receiving member 140 to rotate, and further, the circuit parameters of the valve position receiving member 140 are changed, and further, the valve position receiving member 140 outputs the valve position as a signal. Because the driving engagement assembly 130a and the driven engagement assembly 130b are engaged to realize transmission connection, gaps are avoided at the connection positions of the driving engagement assembly 130a and the driven engagement assembly 130b, and further transmission virtual positions between the driving engagement assembly 130a and the driven engagement assembly 130b are avoided, namely, transmission virtual positions of the transmission mechanism 130 are avoided, errors of transmitted valve position signals are reduced, and monitoring accuracy of the valve position receiving piece 140 is improved.
As shown in fig. 2, in some embodiments, the driving engagement assembly 130a includes a straight moving connecting member 131 and a first engagement member 132, the straight moving connecting member 131 is fixedly connected to the valve stem 120, the first engagement member 132 is fixedly connected to the straight moving connecting member 131, and the first engagement member 132 is engaged with and in driving connection with the driven engagement assembly 130 b. In this embodiment, the direct-acting connecting member 131 is in a rod-shaped structure, the direct-acting connecting member 131 is vertically connected to the valve rod 120, one end of the direct-acting connecting member 131 is fixedly connected to the first engaging member 132, and the first engaging member 132 is fixedly connected to the valve rod 120 through the direct-acting connecting member 131, so that the first engaging member 132 can be closer to the valve position receiving member 140, the overlength of the driven engaging member 130b is avoided, the elastic deformation of the driven engaging member 130b is restrained, the transmission virtual position is further restrained, the error of the transmitted valve position signal is smaller, and the monitoring accuracy of the valve position receiving member 140 is higher.
As shown in fig. 2, in some of these embodiments, the first engagement member 132 is a linear rack such that the first engagement member 132 engages and drivingly connects the driven engagement assembly 130b during linear movement.
As shown in FIG. 2, in some embodiments, the driven engagement assembly 130b includes a rotary link 133 and a second engagement member 134, the first end of the rotary link 133 being fixedly coupled to the rotary portion of the valve position receiver 140, and the second engagement member 134 being fixedly coupled to the second end of the rotary link 133 and engaged with and drivingly coupled to the driving engagement assembly 130 a. In the present embodiment, the rotating connecting member 133 has a rod-shaped structure, and since the second engaging member 134 is fixedly connected to the rotating portion of the valve position receiving member 140 through the rotating connecting member 133, the second engaging member 134 is prevented from interfering with the valve position receiving member 140. Further, the first engagement member 132 is engaged with and drivingly connected to the second engagement member 134, and when the first engagement member 132 is drivingly connected to the second engagement member 134, the rotational coupling member 133 and the rotational portion of the valve position receiving member 140 are rotated.
As shown in FIG. 2, in some embodiments, the second engagement member 134 is an arcuate rack such that the second engagement member 134 engages and drivingly connects the active engagement assembly 130 a. Further, the second engagement member 134 is engaged with and drivingly connected to the first engagement member 132.
As shown in FIG. 2, in some embodiments, the valve receiver 140 is fixedly coupled to an outer side of the valve body 110, the valve body 110 defines a clearance hole, and the rotational coupling 133 is disposed through the clearance hole. In this embodiment, since the valve body 110 is provided with the avoidance hole, the rotation connecting piece 133 is disposed through the avoidance hole, and the rotation connecting piece 133 is rotationally disposed in the avoidance hole, the valve body 110 is prevented from interfering with the rotation of the rotation connecting piece 133, that is, the valve body 110 is prevented from interfering with the transmission of the transmission mechanism 130.
As shown in FIG. 2, in some embodiments, the transmission mechanism 130 further includes a connection block 130c, the connection block 130c is fixedly connected to the valve stem 120, and the active engagement assembly is fixedly connected to the connection block 130c, such that the active engagement assembly 130a is fixedly connected to the valve stem 120 through the connection block 130 c.
As shown in fig. 2, in some embodiments, the connection seat 130c is fixedly sleeved on the valve rod 120, so as to realize a fixed connection between the connection seat 130c and the valve rod 120.
As shown in FIG. 2, in some of these embodiments, the valve receiver 140 is a transponder or positioner. In another embodiment, the valve receiver 140 may also be an angle sensor or other existing valve receiver 140 having a rotating portion.
Compared with the prior art, the utility model has at least the following advantages:
in the valve position feedback connection device 100, when the valve rod 120 is linearly moved in the valve body 110, the valve rod 120 drives the driving engagement assembly 130a to linearly move, so that the driving engagement assembly 130a and the driven engagement assembly 130b are in engagement connection to drive the driven engagement assembly 130b to rotate around the valve position receiving member 140, so that the driven engagement assembly 130b drives the rotating portion of the valve position receiving member 140 to rotate, and further, the circuit parameters of the valve position receiving member 140 are changed, and further, the valve position receiving member 140 outputs the valve position as a signal. Because the driving engagement assembly 130a and the driven engagement assembly 130b are engaged to realize transmission connection, gaps are avoided at the connection positions of the driving engagement assembly 130a and the driven engagement assembly 130b, and further transmission virtual positions between the driving engagement assembly 130a and the driven engagement assembly 130b are avoided, namely, transmission virtual positions of the transmission mechanism 130 are avoided, errors of transmitted valve position signals are reduced, and monitoring accuracy of the valve position receiving piece 140 is improved.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A valve position feedback connecting device, which comprises a valve body, a valve rod, a transmission mechanism and a valve position receiving part, wherein the valve rod moves in the valve body in a straight line, the transmission mechanism is connected with the valve rod, the valve position receiving part is connected with the transmission mechanism,
the valve position receiving part is arranged on the valve body, the transmission mechanism comprises a driving engagement assembly and a driven engagement assembly, the driving engagement assembly is fixedly connected with the valve rod, the driving engagement assembly is engaged with the driven engagement assembly and is in transmission connection, and the driven engagement assembly is also fixedly connected with the rotating part of the valve position receiving part; the valve rod is used for driving the driving engagement assembly to linearly move so that the driving engagement assembly is used for driving the driven engagement assembly and the rotating part of the valve position receiving part to synchronously rotate.
2. A valve position feedback linkage as recited in claim 1, wherein said active engagement assembly comprises a direct-acting coupling member fixedly coupled to said valve stem and a first engagement member fixedly coupled to said direct-acting coupling member, said first engagement member engaging and drivingly coupled to said driven engagement assembly.
3. A valve position feedback connection as recited in claim 2, wherein the first engagement member is a linear rack.
4. A valve position feedback linkage as claimed in any one of claims 1 to 3, wherein the driven engagement assembly comprises a rotary link having a first end fixedly connected to the rotary portion of the valve position receiver and a second engagement member fixedly connected to a second end of the rotary link and engaged with and drivingly connected to the driving engagement assembly.
5. A valve position feedback connection device as recited in claim 4, wherein said second engagement member is an arcuate rack.
6. A valve position feedback connection device as recited in claim 4, wherein the valve position receiver is fixedly coupled to an outer side of the valve body, the valve body defines a clearance hole, and the rotational coupling member is disposed through the clearance hole.
7. A valve position feedback linkage as recited in claim 1, wherein the transmission further comprises a coupling seat fixedly coupled to the valve stem, the active engagement assembly being fixedly coupled to the coupling seat such that the active engagement assembly is fixedly coupled to the valve stem via the coupling seat.
8. A valve position feedback connection device as recited in claim 7, wherein the connection mount is fixedly coupled to the valve stem.
9. A valve position feedback connection as recited in claim 1, wherein the valve position receiver is a transponder or a positioner.
10. A diaphragm valve comprising a valve position feedback connection as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320353005.7U CN219866582U (en) | 2023-02-28 | 2023-02-28 | Valve position feedback connecting device and diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320353005.7U CN219866582U (en) | 2023-02-28 | 2023-02-28 | Valve position feedback connecting device and diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219866582U true CN219866582U (en) | 2023-10-20 |
Family
ID=88343155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320353005.7U Active CN219866582U (en) | 2023-02-28 | 2023-02-28 | Valve position feedback connecting device and diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219866582U (en) |
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2023
- 2023-02-28 CN CN202320353005.7U patent/CN219866582U/en active Active
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