CN211083038U - Valve switch mechanism with flow regulation function and diaphragm valve - Google Patents
Valve switch mechanism with flow regulation function and diaphragm valve Download PDFInfo
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- CN211083038U CN211083038U CN201921770426.XU CN201921770426U CN211083038U CN 211083038 U CN211083038 U CN 211083038U CN 201921770426 U CN201921770426 U CN 201921770426U CN 211083038 U CN211083038 U CN 211083038U
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Abstract
A valve opening and closing mechanism with a flow rate adjusting function and a diaphragm valve are provided, the valve opening and closing mechanism with the flow rate adjusting function includes: a valve rod linearly moving along the length direction thereof to adjust the opening degree of the valve; the valve rod nut is sleeved on the valve rod and drives the valve rod to linearly move along the length direction of the valve rod through a spiral structure; and the driving piece is detachably connected with the valve stem nut and is used for driving the valve stem nut to rotate. Through providing foretell valve switch structure and solving threaded connection structure between its valve gap of current diaphragm valve device and the valve rod after long-time use, the easy interlock of screw thread is damaged, is difficult to the maintenance and even need change the diaphragm valve again, leads to diaphragm valve life weak point, problem that cost of maintenance is high.
Description
Technical Field
The utility model relates to the technical field of valves, mainly relate to a valve switching mechanism and diaphragm valve with flow control function.
Background
Valves are accessories for pipes used to open and close the pipe, control flow direction, regulate and control parameters of the transport medium. In the prior art, the valve controls the opening of the valve by rotating a hand wheel to adjust the positions of a valve rod and a valve core, for example, a diaphragm valve drives the valve rod to move up and down by rotating the hand wheel, so that the diaphragm is switched between a state of closing a fluid channel and a state of opening the fluid channel. The hand wheel drives the valve rod to move up and down in a rotating mode, and when the hand wheel moves down to a certain position, the valve rod pushes the diaphragm to close the fluid channel. At this time, the reaction force exerted by the diaphragm on the valve rod is converted into a force exerted on the bonnet threads, and the bonnet threads also generate reaction force on the valve rod threads. The threads in the existing valve cover and the threads in the valve rod are easy to damage under the repeated action of the force, the damaged threads are not easy to repair, the valve cover and the valve rod need to be replaced, and the problems of high maintenance cost and difficulty in replacement are solved. The valve cover and the valve rod are easy to damage, the service life of the diaphragm valve can be seriously influenced, the stability and the reliability of the diaphragm valve can not be guaranteed, and the replacement cost of the valve cover and the valve rod is high, so that the diaphragm valve is poor in economy.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model discloses the technical problem that solve lies in that threaded connection structure is after long-time the use between its valve gap of current diaphragm valve device and the valve rod, and the anti interlock performance of screw thread worsens, is difficult to the maintenance and even needs to change the diaphragm valve again, leads to the problem that diaphragm valve life is short, cost of maintenance is high. Therefore, the utility model provides a valve switching mechanism with flow control function, include: a valve rod linearly moving along the length direction thereof to adjust the opening degree of the valve; the valve rod nut is sleeved on the valve rod and drives the valve rod to linearly move along the length direction of the valve rod through a spiral structure; the driving piece is detachably connected with the valve rod nut and used for driving the valve rod nut to rotate.
The driving piece is matched with the valve rod nut through an insertion hole and is detachably connected in an inserting mode; the driving piece passes through first limit structure in order to restrict the relative rotation of driving piece and valve-stem nut.
First limit structure includes: the limiting boss is arranged on one of the inner wall of the jack and the outer wall of the valve rod nut, and the limiting groove is arranged on the other of the inner wall of the jack and the outer wall of the valve rod nut and connected with the limiting boss in a matched and clamped mode.
The groove bottom of the limiting groove is of an arc-shaped structure and is matched with the end part of the limiting boss in shape.
One end of the valve rod is in transmission connection with the valve rod nut, and the other end of the valve rod is connected with the valve head; the valve switching mechanism with the flow regulation function further comprises a second limiting structure which is used for blocking the valve rod nut to slide towards the driving piece or the valve head.
The second limit structure comprises: the first limiting step is arranged in the jack, and the first limiting bulge is arranged on one side, close to the driving piece, of the valve rod nut and is abutted against the first limiting step.
The first limiting protrusion is detachably arranged on the valve rod nut.
The first limiting bulge is a check ring sleeved on the valve rod nut, and an annular accommodating groove matched and clamped with an inner ring of the check ring is formed in the valve rod nut.
The check ring is an elastic check ring provided with an opening, and the opening position of the check ring is provided with a mounting hole for changing the inner diameter of the check ring.
The second limit structure comprises: the valve comprises a valve cover, a first limiting step arranged in the valve cover, and a first limiting bulge arranged on the valve rod nut, wherein the first limiting step is arranged in the valve cover, and the first limiting bulge is close to the valve head and is abutted to the first limiting step.
The driving piece is a rotating hand wheel.
A diaphragm valve, comprising: the valve opening and closing mechanism with the flow regulating function.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a valve switch mechanism with flow control function, include: a valve rod linearly moving along the length direction thereof to adjust the opening degree of the valve; the valve rod nut is sleeved on the valve rod and drives the valve rod to linearly move along the length direction of the valve rod through a spiral structure; and the driving piece is detachably connected with the valve stem nut and is used for driving the valve stem nut to rotate. In the prior art, the valve cover and the valve rod are in threaded fit, the hand wheel is rotated to drive the valve rod to move up and down, when the hand wheel moves down to a certain position, the valve rod pushes the diaphragm to close the fluid channel, the diaphragm can convert the reaction force applied to the valve rod into the force applied to the valve cover threads, and meanwhile, the valve cover threads also generate the reaction force on the valve rod threads. The threads in the existing valve cover and the threads in the valve rod are easy to damage under the repeated action of the force, the damaged threads are not easy to repair, the valve cover and the valve rod need to be replaced, and the problems of high maintenance cost and difficulty in replacement are solved. And in this application, through valve-stem nut cover is put on the valve rod, the hand wheel drives valve-stem nut pivot, because valve rod and valve-stem nut set up for helical structure, thereby valve-stem nut can drive valve rod is along its length direction linear motion. This mode can drive through the hand wheel stem nut is rotatory in situ, thereby drives the valve rod goes to promote the diaphragm and seals and open fluid passage, because stem nut cover is put on the valve rod, need not to set up on the driving piece, so do not receive the position influence of valve gap, thereby the valve rod and stem nut has more threads compared with prior art, thereby can slow down the damage of thread, in addition because the driving piece, with stem nut is the link to each other can be dismantled to can reach simple and easy installation and convenient to detach's purpose, convenience of customers changes above-mentioned stem nut, reduces maintenance cost, improves product life.
2. The utility model provides a valve switch mechanism with flow regulation function, wherein the driving piece is matched with the valve rod nut through a jack and can be detachably inserted and connected; the driving piece passes through first limit structure in order to restrict the relative rotation of driving piece and valve-stem nut. The driving piece pass through the jack with valve-stem nut cooperation can be dismantled the grafting and link to each other to can reach simple and easy installation and convenient to detach's purpose, the driving piece can drive through a limit structure in addition valve-stem nut rotates, because valve-stem nut cover is put on the valve rod, through the helical structure drive valve rod up-and-down motion, thereby can drive the valve rod removes to promote the valve head and seals and open fluid passage.
3. The utility model provides a valve switch mechanism with flow control function, first limit structure includes: the limiting boss is arranged on one of the inner wall of the jack and the outer wall of the valve rod nut, and the limiting groove is arranged on the other of the inner wall of the jack and the outer wall of the valve rod nut and connected with the limiting boss in a matched and clamped mode. Through spacing boss with spacing recess carry out the joint and link to each other, can make the driving piece can drive valve-stem nut rotates, and then drives through helical structure valve rod up-and-down motion to can be convenient for drive the valve rod removes to promote the valve head and seals fluid passage and open, and then it is right to reduce under the effect of force valve-stem nut thread tooth's loss.
4. The utility model provides a valve switch mechanism with flow control function, the tank bottom of spacing recess is the arc structure, with spacing boss tip shape looks adaptation. Because the tank bottom of spacing recess is the arc structure, spacing boss can guide spacing boss joint to get into the assigned position, has played the effect of fastening maintenance.
5. The utility model provides a valve switch mechanism with flow regulation function, one end of the valve rod is connected with the valve rod nut in a transmission way, and the other end is connected with the valve head; the valve switching mechanism with the flow regulation function further comprises a second limiting structure which is used for blocking the valve rod nut to slide towards the driving piece or the valve head. Valve rod one end links to each other with the valve-stem nut transmission, and one end links to each other with the valve head, drives through the driving piece valve-stem nut is rotatory, in addition valve-stem nut drives through driving helical structure the valve rod up-and-down motion, because the valve rod other end links to each other with the valve head to can drive the valve head and then realize that fluid passage seals and opens, in addition be equipped with between the driving piece and block valve-stem nut orientation the driving piece or the gliding second limit structure of valve head direction. Can prevent through second limit structure valve-stem nut is at rotatory in-process whereabouts, has played the effect of limiting position.
6. The utility model provides a valve switch mechanism with flow control function, second limit structure includes: the first limiting step is arranged in the jack, and the first limiting bulge is arranged on one side, close to the driving piece, of the valve rod nut and is abutted against the first limiting step. Wherein first spacing arch be the retaining ring, the retaining ring butt be in first spacing step on, through first spacing step with first spacing arch, can prevent valve-stem nut, at rotatory in-process whereabouts to play a fastening, the effect of maintenance, above-mentioned retaining ring more importantly has the advantage of dismantling conveniently, convenience of customers dismouting valve-stem nut and valve rod.
7. The utility model provides a valve switch mechanism with flow control function, first spacing arch can be dismantled and the setting is in valve-stem nut is last. Through first spacing arch with valve-stem nut is for dismantling the connection, can reach and be convenient for the purpose of first spacing bellied installation and change.
8. The utility model provides a valve switch mechanism with flow control function, first spacing arch is put for the cover retaining ring on the valve-stem nut, the last be provided with of valve-stem nut with the annular storage tank of its inner ring cooperation joint of retaining ring. Cooperate through the annular storage tank inner ring on retaining ring and the valve-stem nut, can reach the retaining ring with the fixed purpose of annular storage tank inner ring joint, prevent the retaining ring with valve-stem nut slide from top to bottom to convenience of customers is with the retaining ring joint in the annular storage tank, the installation is dismantled conveniently.
9. The utility model provides a valve switch mechanism with flow control function, the retaining ring is for being provided with open-ended circlip, its open position of retaining ring is provided with and is used for changing the mounting hole of retaining ring internal diameter. The check ring is an elastic check ring with an opening, the check ring can be sleeved on the valve rod nut in the opening direction, in addition, a mounting hole for changing the inner diameter of the check ring is formed in the opening direction, a tool called a clamping and embedding tool is used for mounting, two tentacles on the clamping and embedding tool are respectively inserted into the mounting hole, the check ring is opened through operating calipers so as to be clamped into the groove, and the purpose of facilitating the mounting of the check ring is achieved.
10. The utility model provides a valve switch mechanism with flow control function still includes: a bonnet, said stem nut being received within said bonnet; the second limit structure comprises: the valve rod nut is arranged on the valve cover, the second limiting step is arranged in the valve cover, the valve rod nut is close to the valve head, the second limiting protrusion is abutted to the second limiting step, the valve cover is provided with the second limiting step, the second limiting protrusion is abutted to the second limiting step, the effect of a fastening position can be achieved on the valve rod nut, the valve rod nut is convenient to use, the valve rod nut is detached from the lower end of the valve cover, and the purpose of being convenient to detach is achieved.
11. The utility model provides a valve-gate on-off mechanism with flow control function, the driving piece is for rotating the hand wheel, rotates the hand wheel and has the dismouting of being convenient for, the tight fixed advantage in position of being convenient for and valve-stem nut.
12. The utility model provides a diaphragm valve, include: the valve opening and closing mechanism with the flow regulating function. The valve rod nut is driven to rotate by a rotating hand wheel in the diaphragm valve, and then the valve rod is driven to push the valve head to close and open the fluid channel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a full sectional view of the valve opening and closing mechanism with flow regulating function provided by the present invention;
fig. 2 is a schematic view of a valve opening and closing mechanism with a flow rate adjusting function according to the present invention;
fig. 3 is a schematic three-dimensional structure diagram of a valve opening and closing mechanism driving member with a flow rate adjusting function provided by the present invention;
fig. 4 is a schematic view of a three-dimensional structure of a valve stem nut of the valve switching mechanism with flow rate adjusting function provided by the present invention;
fig. 5 is a schematic view of a three-dimensional structure of a check ring of a valve switching mechanism with a flow adjusting function provided by the present invention;
fig. 6 is a schematic view of a three-dimensional structure of a valve cover of a valve opening and closing mechanism with a flow regulating function provided by the present invention;
description of reference numerals:
1-a driving member; 2-valve stem nut; 3-a valve stem; 4-limiting groove; 5-a jack; 6-limiting boss; 7-an annular accommodating groove; 8-limiting bulges; 9-mounting holes; 10-a valve core; 17-a valve head; 20-valve cover; 21-a first limit step; 22-an opening; 23-a second limit step; 24-a second limit projection.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1 and 2, a diaphragm valve is described, which includes: the valve opening and closing mechanism with the flow regulating function. The rotating handwheel in the diaphragm valve drives the valve rod nut 2 to rotate, and further drives the valve rod 3 to push the valve head 17 to close and open the fluid channel.
As shown in fig. 2 and 3, a valve opening and closing mechanism having a flow rate adjusting function is also described, which includes: a valve rod 3 linearly moved along a length direction thereof to adjust an opening degree of the valve; the valve rod nut 2 is sleeved on the valve rod 3 through the valve rod nut 2, the hand wheel drives the valve rod nut 2 to rotate in place, and the valve rod 3 and the valve rod nut 2 are arranged in a spiral structure, so that the valve rod nut 2 can drive the valve rod 3 to move linearly along the length direction of the valve rod 3; the driving piece 1 is a rotating hand wheel, the rotating hand wheel has the advantages of convenience in disassembly and assembly and convenience in fastening and fixing with a valve-stem nut, and the driving piece 1 is detachably connected with the valve-stem nut 2 and is used for driving the valve-stem nut 2 to rotate; the valve core 10 is connected with the valve rod 3, the valve rod 3 pushes the valve head 17 to adjust the valve opening through the valve core 10, the valve core 10 is connected with the valve rod 3 through a thread structure and is not connected with the valve head 17, and the valve rod 3 and the valve core 10 are in contact with the valve head 17 through linear movement so as to control the opening and closing of the fluid flow of the valve; in the prior art, the valve cover and the valve rod are in threaded fit, the hand wheel is rotated to drive the valve rod to move up and down, when the hand wheel moves down to a certain position, the valve rod pushes the diaphragm to close the fluid channel, the diaphragm can convert the reaction force applied to the valve rod into the force applied to the valve cover threads, and meanwhile, the valve cover threads also generate the reaction force on the valve rod threads. The threads in the existing valve cover and the threads in the valve rod are easy to damage under the repeated action of the force, the damaged threads are not easy to repair, the valve cover and the valve rod need to be replaced, and the problems of high maintenance cost and difficulty in replacement are solved. In the application, the valve rod 3 is driven to linearly move along the length direction of the valve rod by the spiral structure through the valve rod nut 2 sleeved on the valve rod 3. This mode can drive through the hand wheel stem nut 2's rotation, thereby drive the valve rod 3 removes to promote the diaphragm and seals and open fluid passage, because stem nut 2 cover is put on valve rod 3, need not to set up on driving piece 1, so do not receive valve gap 20's position influence, thereby valve rod 3 and stem nut 2 has compares more thread with prior art, and stem nut adopts the preparation of high strength copper alloy, has excellent anti interlock performance moreover to can slow down the damage of thread, in addition because driving piece 1, with stem nut 2 can be dismantled continuously, thereby can reach simple and easy installation and convenient to detach's purpose, convenience of customers changes above-mentioned stem nut 2, reduces the maintenance cost, improves product life.
In addition, as shown in fig. 3, 4 and 5, the driving member 1 is detachably connected with the stem nut 2 through an insertion hole 5 in a matched and inserted manner; the driving piece 1 limits the relative rotation of the driving piece 1 and the valve stem nut 2 through a first limiting structure. Wherein first limit structure including set up jack 5 inner wall with spacing boss 6 on one of them of 2 outer walls of valve-stem nut, and set up jack 5 inner wall with spacing recess 4 that links to each other with 6 cooperation joints of spacing boss on the two another of 2 outer walls of valve-stem nut. The driving piece 1 is matched with the valve rod nut 2 through the jack 5 to be detachably connected in an inserting way, so that the purposes of simple installation and convenient disassembly can be achieved, in addition, the driving piece 1 can drive the valve rod nut 2 to rotate through the first limiting structure, because the valve rod nut 2 is sleeved on the valve rod 3 and drives the valve rod 3 to move up and down through a spiral structure, so as to drive the valve rod 3 to push the valve head 17 to close and open the fluid channel, and in addition, the arrangement of the first limit structure, the limiting boss 6 is connected with the limiting groove 4 in a clamping way, so that the driving piece 1 can drive the valve rod nut 2 to rotate, and then through the helical structure drive valve rod 3 up-and-down motion to can be convenient for drive valve rod 3 goes to promote the diaphragm and seals and open fluid passage, and then reduce under the effect of force to the damage of valve rod nut 3 thread. In addition, the groove bottom of the limiting groove 4 is of an arc-shaped structure and is matched with the end part of the limiting boss 6 in shape. Because the tank bottom of spacing recess 4 is the arc structure, spacing boss 6 can guide 6 direct joint of spacing boss to get into the assigned position, has played the effect of fastening maintenance. One end of the valve rod 3 is in transmission connection with the valve rod nut 2, and the other end of the valve rod is connected with a valve head 17; the valve switching mechanism with the flow regulation function further comprises a second limiting structure which is used for blocking the valve rod nut 2 to slide towards the driving piece 1 or the valve head 17. Valve rod 3 one end links to each other with valve-stem nut 2 transmission, and one end links to each other with valve head 17, drives through driving piece 1 valve-stem nut 2 is rotatory, in addition valve-stem nut 2 drives through driving helical structure valve rod 3 up-and-down motion, because the valve rod 3 other end links to each other with valve head 17 to can drive valve head 17 and then realize that fluid passage seals and opens, in addition be equipped with between the driving piece 1 and block valve-stem nut 2 orientation driving piece 1 or the gliding second limit structure of valve head 17 direction. Can prevent through second limit structure valve-stem nut 2 whereabouts at rotatory in-process, played the effect of limiting position. The second limit structure comprises: the first limiting step 21 is arranged in the insertion hole 5, and the retainer ring is arranged on one side of the valve rod nut 2 close to the driving piece 1 and is abutted to the first limiting step 21. Be provided with on valve-stem nut 2 with the annular storage tank 7 of its inner ring cooperation joint of retaining ring wherein first spacing arch 8 be the retaining ring, the retaining ring butt is in first spacing step 21 on, through first spacing step 21 with first spacing arch 8, can prevent valve-stem nut 2, at rotatory in-process whereabouts to play a fastening, the effect of maintenance, more importantly above-mentioned retaining ring has the convenient advantage of dismantlement, convenience of customers dismouting valve-stem nut 2 and valve rod 3.
In addition, as shown in fig. 5, the retainer ring is detachably disposed on the stem nut 2, and the retainer ring is detachably connected to the stem nut 2, so that the purpose of facilitating installation and replacement of the retainer ring can be achieved. In addition, the valve rod nut 2 is provided with an annular accommodating groove 7 which is matched and clamped with the inner ring of the retainer ring. Cooperate through the annular storage tank 7 inner ring on retaining ring and the valve-stem nut 2, can reach the retaining ring with the fixed purpose of annular storage tank 7 inner ring joint, prevent the retaining ring with valve-stem nut 2 slide from top to bottom to convenience of customers with the retaining ring joint in annular storage tank 7, the installation is dismantled conveniently. The retainer ring is an elastic retainer ring provided with an opening 22, and the opening 22 of the retainer ring is provided with a mounting hole 9 for changing the inner diameter of the retainer ring. The retainer ring is an elastic retainer ring provided with an opening 22, the retainer ring can be sleeved on the valve rod nut 3 in the opening direction, in addition, a mounting hole 9 for changing the inner diameter of the retainer ring is arranged in the opening direction, a tool called a clamping and embedding tool is used for mounting, two tentacles on the clamping and embedding tool are respectively inserted into the mounting hole 9, the retainer ring is opened by operating calipers so as to be clamped into the groove, and the purpose of facilitating the mounting of the retainer ring is achieved.
As shown in fig. 6, the valve opening and closing mechanism having a flow rate adjusting function further includes: a bonnet 20, the stem nut 2 being housed inside the bonnet 20; the second limit structure comprises: a second limit step 23 arranged in the valve cover 20, and a second limit bulge 24 arranged on the valve rod nut 2 close to the valve head 17 and abutting against the second limit step 23. The valve cap 20 is provided with a second limiting step 23 and a second limiting protrusion 24 abutting against the second limiting step 23, so that the valve rod nut 2 can be fastened, the valve rod nut 2 can be conveniently detached from the lower end of the valve cap 20, and the purpose of convenience in detachment is achieved.
In this embodiment, the stem nut 2 and the stem 3 are detached as follows: at first drive valve rod nut 2 through the hand wheel, make valve rod 3 along linear motion downwards through helical structure, until valve rod 3 breaks away from helical structure, take out downwards, reuse one kind is called the mounting tool of inlay card in addition, two feelers on the inlay card insert respectively insert in mounting hole 9, will the opening 22 of retaining ring increases, makes it to take off the retaining ring smoothly through the inlay card instrument, and valve rod nut 2 takes out from rotating the hand wheel downwards along spacing recess 4 directions at last to the dismantlement of valve rod nut 2 and valve rod 3 is simply accomplished.
Of course, the utility model discloses it is right spacing boss 6 sets up do not specifically prescribe a limit to 5 inner walls of jack, can also set up on the 2 outer walls of valve-stem nut, spacing recess 4 sets up do not specifically prescribe a limit to on the 2 outer walls of valve-stem nut equally, can also set up on the 5 inner walls of jack, spacing boss 6 with spacing recess 4 can the size cooperate to can the joint link to each other can.
Of course, the utility model discloses it is right valve head 17 does not specifically limit, can be other elastic component such as diaphragm, can open and close the valve through elastic deformation can.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A valve opening and closing mechanism with a flow rate adjusting function, comprising:
a valve rod (3) which moves linearly along the length direction thereof to adjust the opening degree of the valve;
the valve rod nut (2) is sleeved on the valve rod (3), and the valve rod (3) is driven to linearly move along the length direction of the valve rod through a spiral structure;
the driving piece (1) is detachably connected with the valve rod nut (2) and is used for driving the valve rod nut (2) to rotate;
and the valve core (10) is connected with the valve rod (3), and the valve rod (3) pushes the valve head (17) to adjust the valve opening through the valve core (10).
2. The valve opening and closing mechanism with the flow regulating function according to claim 1, wherein the driving piece (1) is matched with the valve stem nut (2) through an insertion hole (5) and is detachably connected with the valve stem nut in an insertion way; the driving piece (1) limits the relative rotation of the driving piece (1) and the valve rod nut (2) through a first limiting structure.
3. The valve opening and closing mechanism with flow rate regulating function according to claim 2, wherein said first limit structure comprises: the setting is in jack (5) inner wall with spacing boss (6) on one of them of valve-stem nut (2) outer wall, and set up and be in jack (5) inner wall with spacing recess (4) that link to each other with spacing boss (6) cooperation joint on another of valve-stem nut (2) outer wall.
4. The valve opening and closing mechanism with flow regulating function according to claim 2, characterized in that one end of the valve rod (3) is connected with the valve rod nut (2) in a transmission way, and the other end is connected with the valve head (17); the valve opening and closing mechanism with the flow adjusting function further comprises a second limiting structure which is used for blocking the valve rod nut (2) to slide towards the driving piece (1) or the valve head (17).
5. The valve opening and closing mechanism with flow rate regulating function according to claim 4, wherein said second limit structure comprises: the first limiting step (21) is arranged in the insertion hole (5), and the first limiting protrusion (8) is arranged on one side, close to the driving piece (1), of the valve rod nut (2) and is abutted to the first limiting step (21).
6. The valve opening and closing mechanism with flow rate regulating function according to claim 5, wherein the first limit projection (8) is detachably provided on the stem nut (2).
7. The valve opening and closing mechanism with the flow regulating function according to claim 6, wherein the first limiting protrusion (8) is a check ring sleeved on the valve stem nut (2), and the valve stem nut (2) is provided with an annular accommodating groove (7) which is matched and clamped with an inner ring of the check ring.
8. The valve opening and closing mechanism with flow rate regulating function according to claim 7, wherein the retainer ring is a resilient retainer ring provided with an opening (22), and the position of the opening (22) of the retainer ring is provided with a mounting hole (9) for changing the inner diameter of the retainer ring.
9. The valve opening and closing mechanism with a flow rate regulating function according to any one of claims 5 to 8, further comprising: a valve cap (20), the valve stem nut (2) being housed within the valve cap (20);
the second limit structure comprises: the valve comprises a second limit step (23) arranged in the valve cover (20) and a second limit bulge (24) which is arranged on the valve rod nut (2) close to the valve head (17) and is abutted against the second limit step (23).
10. A diaphragm valve, comprising:
the valve opening and closing mechanism with a flow rate regulating function according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921770426.XU CN211083038U (en) | 2019-10-18 | 2019-10-18 | Valve switch mechanism with flow regulation function and diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921770426.XU CN211083038U (en) | 2019-10-18 | 2019-10-18 | Valve switch mechanism with flow regulation function and diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211083038U true CN211083038U (en) | 2020-07-24 |
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ID=71623299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921770426.XU Active CN211083038U (en) | 2019-10-18 | 2019-10-18 | Valve switch mechanism with flow regulation function and diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211083038U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022032773A1 (en) * | 2020-08-13 | 2022-02-17 | 国为(南京)软件科技有限公司 | Fluid control valve for ship |
-
2019
- 2019-10-18 CN CN201921770426.XU patent/CN211083038U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022032773A1 (en) * | 2020-08-13 | 2022-02-17 | 国为(南京)软件科技有限公司 | Fluid control valve for ship |
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