CN118009075B - Valve control assembly and valve - Google Patents
Valve control assembly and valve Download PDFInfo
- Publication number
- CN118009075B CN118009075B CN202410411291.7A CN202410411291A CN118009075B CN 118009075 B CN118009075 B CN 118009075B CN 202410411291 A CN202410411291 A CN 202410411291A CN 118009075 B CN118009075 B CN 118009075B
- Authority
- CN
- China
- Prior art keywords
- valve
- stroke
- unit
- push rod
- control assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000013016 damping Methods 0.000 claims description 26
- 230000033001 locomotion Effects 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 7
- 230000000670 limiting effect Effects 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 41
- 230000008569 process Effects 0.000 abstract description 13
- 230000007547 defect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 18
- 230000002829 reductive effect Effects 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001817 pituitary effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/52—Means for additional adjustment of the rate of flow
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention relates to a valve control assembly and a valve, belongs to the technical field of valves, and solves the technical problem of low accuracy in regulating liquid flow in the prior art. Comprises a base; a first travel unit having a first body and a first pushrod; a second stroke unit having a second body and a second push rod; the second push rod is provided with a first connecting part connected with a valve core of the valve; the base has a second connection portion connected to the valve body of the valve. The first stroke unit carries out stroke adjustment on the valve core in the first stage and the second stroke unit carries out stroke adjustment on the valve core in the second stage, so that the stroke adjustment section of the valve core is in two mutually independent processes, the defect that the stroke adjustment section of the valve core is fixed and single is overcome, the maximum limit value and the minimum limit value of the stroke adjustment of the valve core are increased, and further the flexible adjustment of the opening and closing degree of the valve core is realized.
Description
Technical Field
The invention belongs to the technical field of valves, relates to a technology for realizing high-precision valve control, and in particular relates to a valve control assembly and a valve.
Background
The valve is a pipeline accessory for opening and closing a pipeline, controlling the flow direction, adjusting and controlling parameters (temperature, pressure and flow rate) of a conveying medium. The control component in the fluid conveying system has the functions of stopping, adjusting, guiding, preventing countercurrent, stabilizing pressure, shunting or overflow pressure relief and the like. Valves for fluid control systems range from the simplest shut-off valves to the various valves used in extremely complex automatic control systems, which are quite diverse in variety and specification.
In a liquid delivery system, it is necessary to ensure that the valve achieves control of the target delivery amount of liquid with high accuracy under high-capacity, high-flow-rate conditions. In the prior art, however, the valve is usually operated in a single stroke, i.e. the valve drive structure is able to control the degree of opening and closing of the valve element only in a single and inherent stroke section, which results in a fixed adjustment range of the degree of opening and closing of the valve element. When further adjustment is required in a precisely small range, the valve driving structure of a single driving stroke is not satisfied, thereby making high-precision flow control of the liquid difficult to achieve.
Disclosure of Invention
In order to solve the above-mentioned prior art problems, the present invention provides a valve control assembly and a valve.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
There is provided a valve control assembly comprising:
A base;
a first travel unit having a first body and a first pushrod;
a second stroke unit having a second body and a second push rod;
wherein the first push rod of the first stroke unit can slide relative to the first main body in a controlled manner;
Wherein the second push rod of the second stroke unit can slide relative to the second main body in a controlled manner;
Wherein the first main body is fixedly connected with the base;
Wherein the second main body is connected with the first push rod;
The second push rod is provided with a first connecting part connected with a valve core of the valve;
wherein the base has a second connection portion connected with the valve body of the valve.
Preferably, the first stroke unit and the second stroke unit are cylinders;
the first push rod and the second push rod are push rods of an air cylinder.
Preferably, the stroke of the first stroke unit is a;
The stroke of the second stroke unit is b;
Wherein a is not equal to b; and, in addition, the method comprises the steps of,
A is greater than or equal to 2b, or b is greater than or equal to 2a.
Preferably, a+.b; and, in addition, the method comprises the steps of,
A is greater than or equal to 4b, or b is greater than or equal to 4a.
Preferably, it comprises:
an adjusting unit;
Wherein the adjusting unit is used for adjusting the total stroke c;
where c=a+b.
Preferably, the adjustment travel of the adjustment unit is d;
d≥10%*e；
Wherein e=b when a > b;
wherein e=a when a < b;
Wherein e is a first adjustment coefficient.
Preferably, the damping of the first stroke unit is L1;
the damping of the second stroke unit is L2;
the damping of the valve is L3;
wherein, L4 is more than or equal to K.times.L3, and the value range of K is: 2 to 3;
wherein, when a > b, l4=l1;
Wherein, when a < b, l4=l2;
Wherein K is a second adjustment coefficient;
wherein, L4 is the damping value of the first stroke unit when a is more than b;
or, L4 is the damping value of the second stroke unit when a is less than b.
Preferably, L5 < L3;
wherein, when a > b, l5=l2;
wherein, when a < b, l5=l1;
Wherein, when L5 is a > b, the damping of the second stroke unit takes on value;
or, when L5 is a < b, the damping of the first stroke unit takes on a value.
Preferably, it comprises:
A guide unit;
the guide unit is connected between the second main body and the first main body; and/or the number of the groups of groups,
The guide unit is connected between the second main body and the base; and/or the number of the groups of groups,
The guide unit is connected between the first push rod and the first main body; and/or the number of the groups of groups,
The guide unit is connected between the first push rod and the base;
the guiding unit is used for limiting the movement freedom direction of the second main body to be the axial direction of the first push rod only.
Preferably, it comprises:
a coupling module having a first coupling end and a second coupling end;
the first shaft connecting end is connected with the first connecting part;
The second shaft connecting end is provided with a shaft connecting area s, and any position in the shaft connecting area s can be fixedly connected with a valve core of the valve.
The invention also provides a valve comprising:
a valve core;
a valve body;
Wherein the valve body is connected with the second connecting part;
The valve core is connected with the first connecting part or the second connecting end.
Preferably, the valve outlet is provided with a backflow hole.
Preferably, the valve outlet has a pendant;
the hanging body can collect the retained fluid at the outlet of the valve to the bottom of the hanging body in the use state.
Preferably, the opening of the backflow hole is arranged at the bottom of the hanging body in the use state.
Preferably, one end of the backflow hole far away from the opening is connected with a negative pressure source or a siphon negative pressure module.
The invention provides a valve control assembly and a valve, and the beneficial effects of the invention are as follows:
The valve core adjusting stroke is the sum of the adjusting strokes of the first stroke unit and the second stroke unit, the first stroke unit adjusts the valve core in the first stage, after the first stage is completed, the second stroke unit adjusts the valve core in the second stage, so that the valve core stroke adjusting section is two mutually independent processes, the defect that the valve core stroke adjusting section is fixed and single is overcome, the maximum limit value and the minimum limit value of valve core stroke adjusting are increased, and further flexible adjustment of the valve core opening and closing degree is realized; the valve core can quickly respond to the adjusting action, so that the expected position is achieved, the output quantity of liquid in the action process is reduced, and the accurate and quick flow control process is ensured.
Drawings
FIG. 1 is a perspective view of a valve control assembly according to the present invention;
FIG. 2 is a second perspective view of the valve control assembly according to the present invention;
FIG. 3 is a front view of a valve control assembly according to the present invention;
Fig. 4 is one of sectional views of a valve control assembly according to the present invention (a guide unit is provided between a first body and a second body, and is a structure of a guide hole and a guide post);
FIG. 5 is an enlarged schematic view of a portion of FIG. 4 at A;
FIG. 6 is a second cross-sectional view of the valve control assembly of the present invention (the guide unit is disposed between the second body and the base, and is a structure of the guide hole and the guide post);
FIG. 7 is a third cross-sectional view of the valve control assembly of the present invention (the guide unit is disposed between the first body and the first push rod, and is a structure of the guide groove and the guide block);
FIG. 8 is a schematic view of a valve control assembly according to the present invention in an initial state;
FIG. 9 is a schematic diagram showing a structure of the valve control assembly according to the present invention when the first stroke unit completes the stroke a;
FIG. 10 is a schematic diagram of the valve control assembly according to the present invention when the second stroke unit completes the stroke b;
FIG. 11 is a schematic view showing a structure of an adjusting unit of the valve control assembly according to the present invention;
FIG. 12 is a second schematic view of the structure of the adjusting unit of the valve control assembly according to the present invention;
FIG. 13 is a schematic diagram showing the connection between the first stroke unit and the second stroke unit (the adjusting unit is a telescopic structure for the first push rod) in the valve control assembly according to the present invention;
Fig. 14 is a second schematic diagram of connection between the first stroke unit and the second stroke unit in the valve control assembly according to the present invention (the adjusting unit is a telescopic structure for the second push rod).
Reference numerals illustrate:
1. A base; 2. a first stroke unit; 201. a first body; 202. a first push rod; 3. a second stroke unit; 301. a second body; 302. a second push rod; 4. a valve; 401. a valve core; 402. a valve body; 5. an adjusting unit; 501. adjusting a screw; 502. adjusting the screw sleeve; 503. a lock nut; 504. a telescopic structure; 6. a guide unit; 601. a guide hole; 602. a guide rod; 603. a guide groove; 604. a guide block; 7. a connecting shaft module; 701. a first shaft connection end; 702. a second shaft connecting end; 7021. a shaft connection region s; 801. a first connection portion; 802. a second connecting portion; 9. a reflow hole; 10. a pituitary body.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 14, the following embodiments of the present invention are provided:
as shown in fig. 1 to 3, a first embodiment of the present invention proposes a valve control assembly comprising:
a base 1;
a first stroke unit 2 having a first body 201 and a first push rod 202;
a second stroke unit 3 having a second body 301 and a second push rod 302;
wherein the first push rod 202 of the first stroke unit 2 is controlled to slide relative to the first body 201;
wherein the second push rod 302 of the second stroke unit 3 is controlled to slide relative to the second body 301;
wherein the first main body 201 is fixedly connected with the base 1;
wherein the second body 301 is connected to the first push rod 202;
wherein the second push rod 302 has a first connection portion 801 connected to the valve core 401 of the valve 4;
Wherein the base 1 has a second connection 802 to the valve body 402 of the valve 4.
In the present embodiment, the valve 4 in the prior art is considered as follows:
First, the essential reason why the single-stroke valve 4 driving structure cannot realize the opening and closing degree adjustment of the high-precision valve core 401 is that the adjusting stroke of the driving structure for the valve core 401 is single and inherent, the maximum limit adjusting stroke is M1, and when the maximum limit adjusting stroke reaches M1, the adjusting stroke of the valve core 401 cannot be further increased (specifically, extended), that is, the adjusting stroke is increased to m1+n1, N1 is the further increased adjusting stroke. That is, the opening and closing degree of the valve 4 has reached the minimum opening and closing degree when M1, and the liquid is in the outflow state with the minimum flow, and neither the opening and closing degree of the valve 4 nor the flow of the liquid can be further reduced, that is, the opening and closing degree of the valve 4 or the flow of the liquid can be adjusted to the adjusting point corresponding to the m1+n1 stroke, so that the liquid conveying control with a small range and high precision can not be realized. Conversely, the minimum limit adjustment travel of the drive mechanism is M2, and when M2 is reached, the adjustment travel of the spool 401 cannot be further reduced (embodied as rollback), i.e., reduced to M2-N2, N2 is a further reduced adjustment travel. That is, the opening and closing degree of the valve 4 has reached the maximum opening and closing degree when M2, and the liquid is in the outflow state with the maximum flow rate, and neither the opening and closing degree of the valve 4 nor the flow rate of the liquid can be further increased, that is, the opening and closing degree of the valve 4 or the flow rate of the liquid can be adjusted to the adjusting point corresponding to the M2-N2 stroke, so that the liquid conveying control with large flow rate and high flow rate can not be realized.
Secondly, for the electrically controlled valve 4, a motor is usually used to adjust the opening and closing degree of the valve 4. However, since the transmission ratio of the motor to the transmission structure is fixed, the driving end of the motor rotates by the set angle p, the opening and closing degree of the valve 4 is increased or decreased by g, and the angle p and the value g1 are fixed values in one-to-one correspondence, that is, the value of g1 is fixedly increased or decreased by the opening and closing degree of the valve 4 every time the angle p of the motor is changed, and the value g1 cannot be changed. Therefore, when it is desired to make an adjustment at the value g2 (g 2 is a non-fixed value), the existing valve 4 driving structure cannot be realized at all, and thus high-precision adjustment of the liquid flow rate cannot be realized.
Based on this, the present embodiment adds the first stroke unit 2 and the second stroke unit 3. The adjusting stroke of the valve core 401 is the sum of the adjusting strokes of the first stroke unit 2 and the second stroke unit 3, the first stroke unit 2 performs stroke adjustment on the valve core 401 in a first stage, after the first stage is completed, the second stroke unit performs stroke adjustment on the valve core 401 in a second stage, so that the stroke adjustment section of the valve core 401 is two mutually independent processes, the defect that the stroke adjustment section of the valve core 401 is fixed and single is overcome, the maximum limit value and the minimum limit value of the stroke adjustment of the valve core 401 are increased, and further flexible adjustment of the opening and closing degree of the valve core 401 is realized.
Specifically, when the valve control assembly of the present embodiment is applied to the liquid filling field, during filling, the first stroke unit 2 is started, the first push rod 202 thereof pushes the second body 301 of the second stroke unit 3 to move, the stroke of the valve core 401 is increased or decreased by the pushing stroke of the first push rod 202, in a normal case, the adjusting stroke of the first stroke unit 2 can meet the requirement that the valve core 401 reaches the set opening and closing degree (the distance between the end of the valve core 401 and the outlet of the valve 4), however, when the adjusting control of the liquid flow is required to be continuously performed, the second stroke unit 3 can be started, and at this time, the second stroke unit 3 independently drives the valve core 401 to perform the adjustment within a small range within the adjusting stroke thereof, so that the opening and closing degree of the valve core 401 is further accurately adjusted on the basis of the above, so as to realize the flow control process with high precision.
Of course, in another embodiment, the second stroke unit 3 may be started first, and then the first stroke unit 2 may be started to complete precise control of the liquid flow.
The base 1 is, among other things, the mounting body of the assembly, which can be used in connection with equipment, for example with a filling machine. The base 1 at least includes a second connection portion 802, and the valve body 402 of the valve 4 is connected to the second connection portion 802, and the portion of the structure presents a fixed structure and is not displaced by the actions of the first stroke unit 2 and the second stroke unit 3. The valve element 401 of the valve 4 is connected to the second push rod 302 of the second stroke unit 3 via the first connection portion 801, and is controlled by the first stroke unit 2 and the second stroke unit 3 to perform stroke adjustment.
As shown in fig. 4, a second embodiment of the present invention proposes a valve control assembly, and on the basis of the first embodiment, the first stroke unit 2 and the second stroke unit 3 are cylinders;
Wherein the first push rod 202 and the second push rod 302 are air cylinder push rods.
In this embodiment, in the prior art, an electric valve or a hydraulic valve is generally used for controlling, because the electric valve can control the opening and closing degree of the valve 4 through the rotation angle of the motor, so as to realize quantitative control, and the hydraulic valve can also control the pushing amount of the valve core 401 through the intervention amount of the liquid medium, so as to realize more accurate quantitative control.
But both of the above structures exist:
the control process has intermediate states, namely a motor rotation process and a liquid intervention process, and the intermediate states lead to long response period and slow response speed of the opening and closing degree adjustment of the valve 4, so that the expected conveying amount of liquid at the stage is increased, the actual conveying amount is far greater than the target conveying amount, and high-precision quantitative conveying control cannot be realized.
Based on this, the present embodiment sets the first stroke unit 2 and the second stroke unit 3 as cylinders. The reason is that the driving of the cylinder is faster and its influence on the adjusting action of the spool 401 is quicker. In particular, the two structures described above present a plurality of intermediate points in the intermediate state, i.e. their driving ends can stay for a long time at any point in the stroke, but the longer the stay, the more the outflow that is unexpected of the liquid will increase. In this embodiment, the cylinder driving mode is adopted, the valve core 401 can rapidly respond to the adjustment action only by staying for a long time at the two limit points and switching the valve core between the two limit points, so that the expected position is reached, the output quantity of liquid in the action process is reduced, and the accurate and rapid flow control process is ensured.
As shown in fig. 8 to 10, a third embodiment of the present invention provides a valve control assembly, and the stroke of the first stroke unit 2 is a based on the previous embodiment;
The stroke of the second stroke unit 3 is b;
Wherein a is not equal to b.
In the present embodiment, the first stroke unit 2 and the second stroke unit 3 correspond to different strokes.
The reason is that this embodiment divides the liquid flow control into two regulation phases:
In one of the adjustment phases, it is necessary that any of the aforementioned travel units be able to adjust the spool 401 in a large adjustment stroke so that it reaches the desired position quickly;
In another adjustment stage, the other stroke unit is required to be capable of adjusting the valve core 401 in a smaller adjustment stroke, so as to control the opening and closing degree of the valve 4 to realize high-precision adjustment in a small range.
Based on this, when the strokes of the first stroke unit 2 and the second stroke unit 3 have a difference, it is possible to satisfy both the rapid and non-detention reaching of the desired position of the spool 401 at the initial stage and the accurate and small-range secondary adjustment of the desired position at the flow rate adjustment stage, thereby realizing the accurate adjustment of the flow rate of the liquid in the high-flow-rate, large-flow-rate state.
In one embodiment, a.gtoreq.2b, or b.gtoreq.2a. I.e. the stroke a of the first stroke unit 2 may be a relatively small stroke and the stroke b of the second stroke unit 3 may be a relatively large stroke, or vice versa. In either form, however, it is desirable to satisfy a relatively large stroke of at least 2 times that of a relatively small stroke. The reason is that the shorter the distance between the two limit points, the quicker the two limit points act, and the smaller the difference between the maximum opening and closing degree and the minimum opening and closing degree of the valve 4, the smaller the difference between the maximum flow rate value and the minimum flow rate value of the fluid, which are specific to the valve 401, is, thus being beneficial to accurately controlling the flow rate of the liquid in the state of small flow rate and high flow rate.
In another embodiment, a.gtoreq.4b, or, b.gtoreq.4a. As described above, under the limitation of this parameter, the two limit points of the valve core 401 are used as the reference, that is, the two limit points are adjusted to the maximum limit point and the minimum limit point, the longer the distance between the two limit points is, the larger the difference between the maximum opening degree and the minimum opening degree of the valve 4 is, and the larger the difference between the maximum flow value and the minimum flow value of the fluid is, which is helpful for accurately controlling the flow of the liquid in the high flow and high flow state. And when the minimum flow value and the maximum flow value have larger difference, the flow regulation control with higher precision can be ensured when the large-flow liquid is in the delivery ending stage, so that the problem that the difference value between the actual delivery quantity and the target delivery quantity is overlarge is avoided.
As shown in fig. 8 to 10, a fourth embodiment of the present invention provides a valve control assembly, and based on the above embodiment, includes: an adjusting unit 5;
Wherein the adjusting unit 5 is used for adjusting the total travel c;
where c=a+b.
In this embodiment, since the stroke a of the first stroke unit 2 and the stroke b of the second stroke unit 3 are the total stroke c, and the total stroke c represents the total adjustment stroke of the valve core 401, when the total adjustment stroke is variable, it is found that the maximum limit point and the minimum limit point of the valve core 401 are changed, and the change directly affects the maximum opening degree and the minimum opening degree of the valve 4, so that the liquid flow adjustment control is more accurate.
Based on this, the present embodiment adds the adjusting unit 5 for adjustment of the total stroke c.
In a specific embodiment, the adjusting unit 5 comprises:
an adjusting screw 501 connected to the first push rod 202 of the first stroke unit 2;
an adjusting screw sleeve 502 screwed to the adjusting screw 501;
A lock nut 503 screwed to the adjusting screw 501.
Specifically, by unscrewing the lock nut 503, the adjusting screw sleeve 502 is rotated to displace the adjusting screw 501 in the axial direction thereof, so that the first push rod 202 changes the position of the second stroke unit 3, and the total stroke c is increased or decreased.
In a specific embodiment, the adjusting unit 5 presents a telescopic structure 504, for example, the connecting end of the first push rod 202 and the second body 301 is set to a telescopic and lockable telescopic structure 504, or the connecting end of the second push rod 302 and the spool 401 is set to a telescopic and lockable telescopic structure 504, or the connecting end of the spool 401 and the second push rod 302 is set to a telescopic and lockable telescopic structure 504.
In a specific embodiment, the adjusting unit 5 may be disposed between the first stroke unit 2 and the base 1, or between the first body 201 and the second body 301, or between the second body 301 and the spool 401.
Of course, the above embodiments are only a few of the specific structures and installation positions of the adjusting unit 5, and all the structures and installation positions thereof that can perform the increase adjustment or the decrease adjustment of the total stroke c are within the scope of the present embodiment.
As shown in fig. 11 to 12, a fifth embodiment of the present invention proposes a valve control assembly, and on the basis of the above embodiment, the adjustment stroke of the adjustment unit 5 is d;
d≥10%*e；
Wherein e=b when a > b;
wherein e=a when a < b;
Wherein e is a first adjustment coefficient.
In the present embodiment, it has further been found that if the adjustment stroke d of the adjustment unit 5 is too large, the adjustment accuracy thereof is reduced, and the present embodiment expects a high-accuracy adjustment structure in which the stroke unit (stroke unit having a relatively small stroke) is a first step, and the adjustment unit 5 serves as a high-accuracy adjustment structure in which the adjustment accuracy and the length of the adjustment stroke are inversely proportional. If the adjustment stroke d is too small, although the accuracy increases, the positional influence on the two limit points of the spool 401 is weakened, and the adjustment effect is further improved. Thus, the aforementioned parameter definition of the adjustment travel d is given.
Specifically, the adjustment stroke d is equal to or greater than 10% e, e being a relatively small stroke value. When this parameter limitation is met, it is found that the adjustment accuracy and the adjustment range of the adjustment unit 5 are in a relatively reasonable interval, which can ensure that the positions of the two limit points of the valve core 401 are increased or decreased to the greatest extent under the condition of higher adjustment accuracy, thereby ensuring accurate control of the liquid flow.
A sixth embodiment of the present invention provides a valve control assembly, and on the basis of the previous embodiment, the damping of the first stroke unit 2 is L1;
the damping of the second stroke unit 3 is L2;
the damping of the valve 4 is L3;
wherein, L4 is more than or equal to K.times.L3, and the value range of K is: 2 to 3;
wherein, when a > b, l4=l1;
where, when a < b, l4=l2.
In the present embodiment, the damping is a friction force between the push rod and the main body corresponding to the stroke unit, and a friction force between the valve body 402 and the valve element 401. When the stroke unit with relatively larger stroke acts, at least the damping between the push rod and the main body is required to be ensured to be larger than the damping between the valve body 402 and the valve core 401, otherwise, the damping between the valve body 402 and the valve core 401 is excessively large to cause the push rod and the main body to slide relatively, namely, the regulating action of the stroke unit cannot push the valve core 401 to act and be in a failure state, so that the damping of the stroke unit with relatively larger stroke needs to be more than or equal to 2-3 times of the damping of the valve 4 to ensure that the valve core 401 can be regulated in response to the action of the push rod.
On the basis of the above, further defined is:
L5＜L3；
wherein, when a > b, l5=l2;
Where, when a < b, l5=l1.
I.e. the damping of the stroke unit of the relatively small stroke is smaller than the damping of the valve 4. The reason is that when the relatively large stroke unit is operated, the other stroke unit is required to not cause the adjustment action to the valve core 401, so that the valve core 401 is prevented from excessively large adjustment stroke and blocking the outflow opening of the valve 4 caused by the combined action of the two. Therefore, it is desirable that the adjustment actions of the two stroke units are independent of each other, and therefore, under the aforementioned parameter limitation, only their corresponding push rod, the spool 401 and the main body of the other stroke unit are actuated when the relatively large stroke unit is adjusted, and only their corresponding push rod and spool 401 are actuated when the relatively small stroke unit is adjusted.
And it has further been found that when the damping meets the above requirements, only one set of air sources is required to be activated at the same time node. I.e. when the relatively large stroke unit is adjusted, only the air source of this stroke unit is switched on, the air source of the other stroke unit is switched off, correspondingly, when the relatively small stroke unit is adjusted, only the air source of this stroke unit is switched on, the air source of the other stroke unit is switched off. The above-mentioned process can effectively slow down mechanical vibration to avoid causing the influence to the liquid flow state, and then guarantee the accurate control of liquid outflow.
As shown in fig. 4 to 7, a seventh embodiment of the present invention provides a valve control assembly, and based on the above embodiment, includes:
A guide unit 6;
The guide unit 6 is connected between the second body 301 and the first body 201; and/or the number of the groups of groups,
The guide unit 6 is connected between the second body 301 and the base 1; and/or the number of the groups of groups,
The guide unit 6 is connected between the first push rod 202 and the first main body 201; and/or the number of the groups of groups,
The guide unit 6 is connected between the first push rod 202 and the base 1;
Wherein the guiding unit 6 is configured to define the direction of freedom of movement of the second body 301 to be only the axial direction of the first push rod 202.
In this embodiment, since the second body 301 has a displacement motion, if it deviates from the desired displacement direction, it will twist with the first push rod 202 and the valve core 401, and this twisting will not only result in the consumption of mechanical life, but also cause deviation of the adjustment stroke, so that there is a large difference between the actual adjustment stroke and the target adjustment stroke.
Based on this, the guide unit 6 is added to limit the movement freedom direction of the second body 301 to the axial direction of the first push rod 202 only, so that the consumption of the adjustment stroke due to the occurrence of torsion and the like is avoided, and the accuracy of the adjustment stroke is ensured.
In a specific embodiment, the guide unit 6 is disposed between the second body 301 and the first body 201. The guide unit 6 includes:
a guiding hole 601 formed in the first body 201 and the second body 301, and the two guiding holes 601 are coaxial;
a guide rod 602 slidably coupled between the guide holes 601 of the first body 201 and the second body 301.
The second body 301 is provided with a desired constraint by a sliding fit of the guide bar 602 and the guide hole 601.
In a specific embodiment, the guide unit 6 is disposed between the second body 301 and the base 1. The specific structure thereof may be the same as that described above, except that the guide holes 601 are provided at the second body 301 and the base 1, respectively.
In a specific embodiment, the guide unit 6 is disposed between the first push rod 202 and the first body 201. The guide unit 6 includes:
A guide groove 603 formed in the first body 201;
The guide block 604 is disposed on the first push rod 202 and slidably engaged with the guide groove 603.
By the restraining action of the guide block 604 and the guide groove 603, the actual pushing direction of the first push rod 202 is ensured to be matched with the axial direction of the first push rod, and further the movement direction of the second main body 301 is ensured to be the expected direction.
In a specific embodiment, the guide unit 6 is disposed between the first push rod 202 and the base 1.
The guide unit 6 may be the same as the above embodiment, except that the guide groove 603 is provided at the base 1.
Of course, the above-mentioned only are a few limitations of the mounting position and specific structure of the guide unit 6, and any other mounting position and specific structure of the guide unit 6 capable of realizing the constraint of the movement freedom direction of the second body 301 only in the axial direction of the first push rod 202 falls within the scope of protection of the present embodiment.
An eighth embodiment of the present invention provides a valve control assembly, and based on the previous embodiment, the valve control assembly includes:
a coupling module 7 having a first coupling end 701 and a second coupling end 702;
Wherein, the first shaft connecting end 701 is connected with the first connecting portion 801;
the second shaft connecting end 702 has a shaft connecting region s7021, and any position in the shaft connecting region s7021 can be fixedly connected with the valve core 401 of the valve 4.
In the present embodiment, it is further found that the second body 301 has a first movement direction controlled by the movement of the first push rod 202, the aforementioned guide unit 6 restricts the first movement direction to coincide with the first push rod 202 in the axial direction, the first connection portion 801 has a second movement direction, the desired direction of the second movement direction is the axial direction of the first push rod 202, the valve element 401 has a third movement direction, and the desired direction of the third movement direction is the axial direction of the first push rod 202. If the first action direction, the second action direction and the third action direction are not coaxial, it is found that an uncontrollable offset force occurs at least at the connection point of the second body 301 and the first push rod 202 and at the connection point of the second push rod 302 and the valve core 401 in the whole action process, and the offset force can cause the second body 301, the first push rod 202 and the valve core 401 to deviate from the current installation position passively and forcedly, so that problems such as structural loss occur.
Based on this, the coupling module 7 is added between the first connection portion 801 and the spool 401. The first shaft connection end 701 of the shaft connection module 7 is connected to the first connection portion 801, and the shaft connection region s7021 of the second shaft connection end 702 is connected to the valve core 401, which has the advantages of allowing each operation direction to be in a non-coaxial state, and helping to eliminate the offset force occurring at each connection point in the non-coaxial state, so that the second operation direction, particularly the third operation direction, is deviated from the first operation direction, thereby solving the problems of structural loss and the like.
It should be noted that, although the directions are allowed to be in the non-coaxial state, the first direction must be consistent with the axial direction of the first push rod 202, otherwise, even if the connecting shaft module 7 can solve the problem of maintaining stability in the non-coaxial state of the second action direction and the third action direction, the first action direction offset will cause the action direction of the second body 301 to be offset, thereby affecting the aforementioned positive effect of the connecting shaft module 7. That is, the guiding unit 6 and the connecting shaft module are an integral technical solution, and both have the problem that can be solved by this embodiment, and cannot be split, especially cannot separate the connecting shaft module 7.
As shown in fig. 1 to 14, a ninth embodiment of the present invention proposes a valve 4 including the valve control assembly according to any one of the above embodiments, and comprising:
A spool 401;
A valve body 402;
Wherein the valve body 402 is connected to the second connecting portion 802;
Wherein, the valve core 401 is connected with the first connecting part 801 or the second connecting end 702.
The valve 4 provided in this embodiment has all the above beneficial effects, and will not be described herein.
A tenth embodiment of the invention proposes a valve 4, and on the basis of the previous embodiment, the outlet of said valve 4 is provided with a return orifice 9.
In this embodiment, as shown in fig. 5, when the liquid delivery is in the end phase, part of the liquid remaining in the pipe or valve 4 will continue to flow out, so that the liquid remains in the drip state when the valve 4 assembly is in the closed state, and thus in order to eliminate this state, a return orifice 9 is added. When the liquid flows through this position, the backflow hole 9 will absorb the liquid to avoid dripping.
A tenth embodiment of the present invention proposes a valve 4, and on the basis of the above embodiment, the outlet of the valve 4 has a pendant 10;
the suspension body 10 can collect the retained fluid at the outlet of the valve 4 to the bottom of the suspension body 10 in the use state.
In this embodiment, the hanging body 10 is a frustum-shaped structure formed at the end of the valve core 401, the backflow hole 9 is formed at the bottom of the hanging body 10, and the side wall of the hanging body 10 has a guiding function to face the liquid, so that the liquid flows to the backflow hole 9 along the path of the side wall surface, and continuous dripping caused by that the liquid cannot contact the backflow hole 9 is avoided.
On the basis of the above, one end of the backflow hole 9 far away from the opening is connected with a negative pressure source or a siphon negative pressure module. The back flow of the liquid is actively interfered by a negative pressure source or a siphon negative pressure module so as to ensure that the back flow guiding force is enough to promote the back flow of a larger amount of liquid.
In describing embodiments of the present invention, it is to be understood that terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "center", "top", "bottom", "inner", "outer", and the like indicate an azimuth or positional relationship.
In describing embodiments of the present invention, it should be noted that the terms "mounted," "connected," and "assembled" are to be construed broadly, as well as being either fixedly connected, detachably connected, or integrally connected, unless otherwise specifically indicated and defined; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of embodiments of the invention, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.
In describing embodiments of the present invention, it will be understood that the terms "-" and "-" are intended to be inclusive of the two numerical ranges, and that the ranges include the endpoints. For example: "A-B" means a range greater than or equal to A and less than or equal to B. "A-B" means a range of greater than or equal to A and less than or equal to B.
In the description of embodiments of the present invention, the term "and/or" is merely an association relationship describing an association object, meaning that three relationships may exist, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (18)
1. A valve control assembly, comprising:
A base;
a first travel unit having a first body and a first pushrod;
a second stroke unit having a second body and a second push rod;
wherein the first push rod of the first stroke unit can slide relative to the first main body in a controlled manner;
Wherein the second push rod of the second stroke unit can slide relative to the second main body in a controlled manner;
Wherein the first main body is fixedly connected with the base;
Wherein the second main body is connected with the first push rod;
The second push rod is provided with a first connecting part connected with a valve core of the valve;
wherein the base is provided with a second connecting part connected with the valve body of the valve;
the stroke of the first stroke unit is a;
The stroke of the second stroke unit is b;
the damping of the first stroke unit is L1;
the damping of the second stroke unit is L2;
the damping of the valve is L3;
wherein, L4 is more than or equal to K.times.L3, and the value range of K is: 2 to 3;
wherein, when a > b, l4=l1;
Wherein, when a < b, l4=l2;
Wherein K is a second adjustment coefficient;
wherein, L4 is the damping value of the first stroke unit when a is more than b;
or, L4 is the damping value of the second stroke unit when a is less than b.
2. The valve control assembly of claim 1 wherein,
The first stroke unit and the second stroke unit are cylinders;
the first push rod and the second push rod are push rods of an air cylinder.
3. A valve control assembly according to claim 1 or 2, wherein,
Wherein a is not equal to b; and, in addition, the method comprises the steps of,
A is greater than or equal to 2b, or b is greater than or equal to 2a.
4. The valve control assembly of claim 3 wherein,
A is not equal to b; and, in addition, the method comprises the steps of,
A is greater than or equal to 4b, or b is greater than or equal to 4a.
5. The valve control assembly of any one of claims 1, 2 and 4, comprising:
an adjusting unit;
Wherein the adjusting unit is used for adjusting the total stroke c;
Wherein c=a+b;
wherein the stroke of the first stroke unit is a;
wherein the stroke of the second stroke unit is b.
6. A valve control assembly according to claim 3, comprising:
an adjusting unit;
Wherein the adjusting unit is used for adjusting the total stroke c;
where c=a+b.
7. The valve control assembly of claim 5 wherein the valve is configured to control the valve,
The adjusting stroke of the adjusting unit is d;
d≥10%*e；
Wherein e=b when a > b;
wherein e=a when a < b;
Wherein e is a first adjustment coefficient.
8. The valve control assembly of claim 6 wherein,
The adjusting stroke of the adjusting unit is d;
d≥10%*e；
Wherein e=b when a > b;
wherein e=a when a < b;
Wherein e is a first adjustment coefficient.
9. The valve control assembly of claim 1 wherein,
L5＜L3；
Wherein, when a > b, l5=l2;
wherein, when a < b, l5=l1;
Wherein, when L5 is a > b, the damping of the second stroke unit takes on value;
or, when L5 is a < b, the damping of the first stroke unit takes on a value.
10. The valve control assembly of any one of claims 1,2, 4, 6, 7, 8, and 9, comprising:
A guide unit;
the guide unit is connected between the second main body and the first main body; and/or the number of the groups of groups,
The guide unit is connected between the second main body and the base; and/or the number of the groups of groups,
The guide unit is connected between the first push rod and the first main body; and/or the number of the groups of groups,
The guide unit is connected between the first push rod and the base;
the guiding unit is used for limiting the movement freedom direction of the second main body to be the axial direction of the first push rod only.
11. The valve control assembly of claim 5, comprising:
A guide unit;
the guide unit is connected between the second main body and the first main body; and/or the number of the groups of groups,
The guide unit is connected between the second main body and the base; and/or the number of the groups of groups,
The guide unit is connected between the first push rod and the first main body; and/or the number of the groups of groups,
The guide unit is connected between the first push rod and the base;
the guiding unit is used for limiting the movement freedom direction of the second main body to be the axial direction of the first push rod only.
12. The valve control assembly of claim 9, comprising:
a coupling module having a first coupling end and a second coupling end;
the first shaft connecting end is connected with the first connecting part;
The second shaft connecting end is provided with a shaft connecting area s, and any position in the shaft connecting area s can be fixedly connected with a valve core of the valve.
13. The valve control assembly of claim 11, comprising:
a coupling module having a first coupling end and a second coupling end;
the first shaft connecting end is connected with the first connecting part;
The second shaft connecting end is provided with a shaft connecting area s, and any position in the shaft connecting area s can be fixedly connected with a valve core of the valve.
14. A valve comprising the valve control assembly of any one of claims 1-13, and comprising:
a valve core;
a valve body;
Wherein the valve body is connected with the second connecting part;
The valve core is connected with the first connecting part or the second connecting end.
15. A valve as claimed in claim 14, wherein,
And the valve outlet is provided with a backflow hole.
16. A valve as claimed in claim 15, wherein,
The valve outlet is provided with a hanging body;
the hanging body can collect the retained fluid at the outlet of the valve to the bottom of the hanging body in the use state.
17. A valve as claimed in claim 16, wherein,
The opening of the reflow hole is arranged at the bottom of the hanging body in the use state.
18. A valve according to any one of claims 15 to 17,
One end of the backflow hole far away from the opening is connected with a negative pressure source or a siphon negative pressure module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410411291.7A CN118009075B (en) | 2024-04-08 | 2024-04-08 | Valve control assembly and valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410411291.7A CN118009075B (en) | 2024-04-08 | 2024-04-08 | Valve control assembly and valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118009075A CN118009075A (en) | 2024-05-10 |
| CN118009075B true CN118009075B (en) | 2024-07-26 |
Family
ID=90954214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410411291.7A Active CN118009075B (en) | 2024-04-08 | 2024-04-08 | Valve control assembly and valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118009075B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118145581B (en) * | 2024-05-11 | 2024-07-26 | 成都味科自动化设备有限公司 | Valve and filling system with same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310293A (en) * | 2014-08-27 | 2015-01-28 | 梧州市旺捷机械制造有限公司 | Filling-machine two-segment control discharging apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB723679A (en) * | 1953-05-22 | 1955-02-09 | Mini Of Supply | Improvements in or relating to fluid pressure valves |
| FR2095562A5 (en) * | 1970-06-10 | 1972-02-11 | Eaux Minerales Gazeuses | |
| DE4241545A1 (en) * | 1992-12-10 | 1994-06-16 | Khs Masch & Anlagenbau Ag | Filling machine, in particular counter-pressure filling machine |
| ATE314304T1 (en) * | 2001-11-09 | 2006-01-15 | Sig Simonazzi Spa | FILLING VALVE FOR FILLING MACHINE |
| DE102007058251A1 (en) * | 2007-12-04 | 2009-06-10 | Apv Rosista Gmbh | Device for controlling a process valve for use in food technology |
| CN207569304U (en) * | 2017-10-30 | 2018-07-03 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of two-part pneumatic valve group filling for big flow |
| CN207715774U (en) * | 2018-01-17 | 2018-08-10 | 四川航宇机械制造有限公司 | A kind of big flow fine adjustment valve |
| CN108408676A (en) * | 2018-01-30 | 2018-08-17 | 广西天工冶金科技有限公司 | A kind of liquid pharmaceutical automatic adding device |
-
2024
- 2024-04-08 CN CN202410411291.7A patent/CN118009075B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310293A (en) * | 2014-08-27 | 2015-01-28 | 梧州市旺捷机械制造有限公司 | Filling-machine two-segment control discharging apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118009075A (en) | 2024-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3594543B1 (en) | Electrically-driven flow rate control valve | |
| CN118009075B (en) | Valve control assembly and valve | |
| EP2663774B1 (en) | Method for operating a pump that is driven by an electric motor in a power-optimized manner in the event of low volumetric flow rates | |
| CN105443837B (en) | A kind of solenoid-operated proportional flow valve | |
| CN103940159A (en) | Electronic expansion valve | |
| CH705960A1 (en) | Hydraulic system with temperature-dependent hydraulic fluid leakage. | |
| CN106762926B (en) | The electrohydraulic controlling mechanism of pressure-adjustable and off-load | |
| CN105134538B (en) | A kind of volume adjustable hydraulic pump, the Variable Control piston of motor and its application | |
| CN114876791B (en) | Intelligent flow calibration gear pump | |
| CN104179734B (en) | A kind of constant-pressure control device for hydraulic pump and control method | |
| CN116336024A (en) | An Electro-hydraulic Reversing Flow Proportional Control Valve with Load Flow Compensation | |
| CN110422778B (en) | Boom amplitude-changing hydraulic system and crane | |
| CN108591151B (en) | Hydraulic axial plunger pump power control and positive flow control mechanism | |
| CN1111259C (en) | Pilot-type overflow valve | |
| US20120216896A1 (en) | Servo valve | |
| CN112065819A (en) | Compact electro-hydraulic actuator | |
| CN214171391U (en) | Proportional valve with pressure reducing and reversing functions | |
| CN207583728U (en) | Pressure valve electric-hydraulic proportion regulating mechanism | |
| CN207437284U (en) | Hydraulic pump control valve | |
| CN107917119B (en) | Improved fluid control valve cartridge | |
| CN110259749A (en) | A kind of power control valve block, hydraulic pump module and engineering machinery | |
| CN100387881C (en) | UHV circuit breaker hydraulic mechanism pressure compensation valve | |
| CN214118617U (en) | Variable pump control valve | |
| EP0433770B1 (en) | Control valve for a hydraulic elevator | |
| CN106640575B (en) | Electrohydraulic controlling mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |