CN210266059U - Differential pressure control valve connecting structure and differential pressure control valve - Google Patents
Differential pressure control valve connecting structure and differential pressure control valve Download PDFInfo
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- CN210266059U CN210266059U CN201921285367.7U CN201921285367U CN210266059U CN 210266059 U CN210266059 U CN 210266059U CN 201921285367 U CN201921285367 U CN 201921285367U CN 210266059 U CN210266059 U CN 210266059U
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- pressure control
- adapter sleeve
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Abstract
The utility model discloses a pressure differential control valve connection structure and pressure differential control valve, including diaphragm capsule seat and adapter sleeve, be provided with the movable chamber that can supply the diaphragm activity in the diaphragm capsule seat, the bottom of diaphragm capsule seat is provided with first connection flange dish, the top cooperation of adapter sleeve first connection flange dish is provided with second connection flange dish, first connection flange dish passes through the screw connection with second connection flange dish, the outside middle part of adapter sleeve is provided with first support edge, the inboard bottom of diaphragm capsule seat is provided with the second and holds in the palm the edge. The utility model discloses with the threaded connection structure of diaphragm capsule seat and adapter sleeve among the conventional art, improve the flange in this application and add the connection structure of screw, like this when the installation, at first with adapter sleeve welding to the valve body on, then directly through flange structure with the diaphragm capsule seat install the adapter sleeve on can, need not to use complicated instrument, simple to operate has simplified the manufacturing procedure, has improved work efficiency.
Description
Technical Field
The utility model relates to a pressure differential control valve connection structure field especially relates to a pressure differential control valve connection structure and pressure differential control valve.
Background
The pressure difference control valve is a common functional valve, does not need any external energy, automatically adjusts by means of the pressure change of a medium to be adjusted, and automatically eliminates the residual pressure head of a pipe network and the flow change caused by pressure fluctuation, the company discloses a steel welding pressure difference control valve in the utility model patent specification with the publication number of 'CN 204437394U', the structure of which is shown in figure 1-2, the steel welding pressure difference control valve comprises a valve body 1-1, a first connecting pipe 1-2 and a second connecting pipe 1-3 are respectively arranged at the two sides of the valve body 1-1, a valve seat 1-4 is fixedly arranged in the valve body 1-1, the first connecting pipe 1-2 extends into the valve body 1-1 and is connected with a valve seat 1-4, a round hole is arranged at the top of the valve body 1-1, a connecting sleeve 1-5 is arranged in the round hole, and a membrane box seat 1-6 is connected at the top of, the top of the membrane box seat 1-6 is connected with a membrane box cover 1-7, a membrane 1-8 is arranged between the membrane box cover 1-7 and the membrane box seat 1-6, a valve core 1-9 is arranged in the membrane box seat 1-6 and can move up and down, the top of the valve core 1-9 is connected with the membrane 1-8 through an upper membrane pad 1-10 and a lower membrane pad 1-11, a guide sleeve 1-12 is arranged in the membrane box seat 1-6, a spring 1-13 is arranged between the guide sleeve 1-12 and the lower membrane pad 1-11, the bottom of the valve core 1-9 is provided with an upper conical valve flap 1-14 and a lower conical valve flap 1-15, the valve seat 1-4 is matched with a commercial valve flap 1-14 and the lower conical valve flap 1-15 and is provided with an upper valve port 1-16 and a lower valve port 1-17, the second connecting pipe 1-3 is connected with the top of the diaphragm box cover 1-7 through the pressure guide pipe 1-18, and the pressure above the diaphragm 1-8 is transmitted through the pressure guide pipe 1-18 to realize the self-adjustment of the upper and lower positions of the valve core 1-9, namely the size of the valve port opening.
Wherein in the above structure, the connecting sleeve 1-5 is fixedly connected with the valve body 1-1 by welding, the connecting sleeve 1-5 is connected with the membrane box base 1-6 by screw thread structure 1-19, and a sealing ring 1-20 is arranged between the connecting sleeve 1-5 and the membrane box base 1-6 for improving the sealing performance, the company finds that the screw thread connection structure between the connecting sleeve 1-5 and the membrane box base 1-6 is inconvenient in assembly, because of the respective shape of the connecting sleeve 1-5 and the membrane box base 1-6, the connecting sleeve is not as convenient as a common straight pipe fitting and is convenient to assemble by screw thread, the connecting sleeve needs to be realized by complex fixture assistance, the manufacturing process of the whole differential pressure control valve is complicated, and the working efficiency is reduced, there is much room for improvement in the construction of the connection sleeve and bellows mount.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to avoid prior art's weak point, provide a differential pressure control valve connection structure and differential pressure control valve to effectively solve the weak point that exists among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a pressure differential control valve connection structure, includes diaphragm capsule seat and adapter sleeve, be provided with the movable chamber that can supply the diaphragm activity in the diaphragm capsule seat, the bottom of diaphragm capsule seat is provided with first connection flange dish, the top cooperation of adapter sleeve first connection flange dish is provided with second connection flange dish, first connection flange dish passes through the screw connection with second connection flange dish, the outside middle part of adapter sleeve is provided with first support edge, the inboard bottom of diaphragm capsule seat is provided with the second and holds in the palm the edge.
Furthermore, a plurality of mounting holes are formed in the outer side of the membrane box seat along the circumferential direction.
Further, the bottom on first support edge is provided with the welding liquid holding tank.
Further, the welding liquid holding tank is provided with many places along circumference is even.
Further the welding liquid holding tank is an arc-shaped tank.
Further, the welding liquid holding tank is a square tank.
Further, a sealing ring is arranged between the first connecting flange plate and the second connecting flange plate.
A pressure difference control valve comprises the pressure difference control valve connecting structure.
The above technical scheme of the utility model following beneficial effect has: the utility model discloses improve the threaded connection structure of diaphragm capsule seat and adapter sleeve among the traditional art into the flange in this application and add the connection structure of screw, like this when installing, weld the adapter sleeve to the valve body at first, then directly through flange structure with diaphragm capsule seat install on the adapter sleeve can, need not to use complicated instrument, simple to operate has simplified the manufacturing procedure, has improved work efficiency; another important advantage lies in, the adjustment of circumferential position need be carried out to the helicitic texture when the spiro union, makes the position of membrane box seat and adapter sleeve adjust well, and adopts the flange structure in this application, owing to open in advance there is the screw hole, so adjust well with the screw hole on first connection flange dish and the second connection flange dish, can realize adjusting well of membrane box seat and adapter sleeve, need not to adjust again, has simplified the flow equally, has improved the quality of work efficiency and product.
Drawings
FIG. 1 is a schematic diagram of a prior art differential pressure balancing valve;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic structural diagram of a connecting member for a differential pressure control valve according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of FIG. 3;
FIG. 5 is a top view of FIG. 3;
FIG. 6 is a bottom view of FIG. 3;
fig. 7 is a schematic structural diagram of a differential pressure control valve according to an embodiment of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 3-6, the differential pressure control valve connection structure described in this embodiment includes a capsule seat 1 and a connection sleeve 2, a movable cavity 1a for movement of a diaphragm is provided in the capsule seat 1, a first connection flange 3 is provided at the bottom of the capsule seat 1, a second connection flange 4 is provided at the top of the connection sleeve 2 in cooperation with the first connection flange 3, the first connection flange 3 and the second connection flange 4 are connected by a screw 5, a first support edge 6 is provided at the middle portion of the outer side of the connection sleeve 2, and a second support edge 7 is provided at the bottom of the inner side of the capsule seat 1.
With the threaded connection structure of diaphragm capsule seat 1 and adapter sleeve 2 among the conventional art, improve the flange in this application and add the connection structure of screw, like this when the installation, at first with adapter sleeve 2 welding to the valve body on, then directly through flange structure with diaphragm capsule seat 1 install on adapter sleeve 2 can, need not to use complicated instrument, simple to operate has simplified the manufacturing procedure, has improved work efficiency.
Another important advantage lies in, the adjustment of circumferential position need be carried out to the helicitic texture when the spiro union, makes the position of membrane box seat 1 and adapter sleeve 2 adjust well, and adopts the flange structure in this application, owing to open the screw hole in advance, so adjust well with the screw hole on first connecting flange dish 4 and the second connecting flange dish 4, can realize adjusting well of membrane box seat 1 and adapter sleeve 2, need not to adjust again, has simplified the flow equally, has improved the quality of work efficiency and product.
The outer side of the membrane cassette holder 1 is provided with a plurality of mounting holes 1b along the circumferential direction.
The bottom of the first support edge 6 is provided with a soldering liquid accommodating groove 6 a.
The welding liquid holding tank 6a is provided with many places along circumference is even, and when adapter sleeve 2 welded with the valve body like this, partial welding liquid flowed into welding liquid holding tank 6a, and the further connectivity of reinforcing adapter sleeve 2 and valve body improves joint strength.
The welding liquid accommodating groove 6a is an arc-shaped groove or a square groove.
A sealing ring is arranged between the first connecting flange 3 and the second connecting flange 4.
As shown in fig. 7, a differential pressure control valve comprises the above differential pressure control valve connection structure, which comprises a valve body 8, a first connection pipe 9 and a second connection pipe 10 are respectively arranged at two sides of the valve body 8, a valve seat 11 is fixedly arranged in the valve body 8, the first connection pipe 9 extends into the valve body 8 and is connected with the valve seat 11, a round hole is arranged at the top of the valve body 8, the bottom of the connection sleeve 2 is fixed in the round hole, a diaphragm cover 12 is connected at the top of the diaphragm cover 1 through a screw, a diaphragm 13 is arranged between the diaphragm cover 12 and the diaphragm cover 1, a valve core 14 is movably arranged in the diaphragm cover 1 and the connection sleeve 2 up and down, the top of the valve core 14 is connected with a lower diaphragm pad 16 and the diaphragm 13 through an upper diaphragm pad 15, a guide sleeve 17 is arranged in the connection sleeve 2, the guide sleeve 17 plays a role of vertically guiding the valve core 14, the bottom of the guide sleeve 17 is abutted against a second support edge 4, a, the bottom of the valve core 14 is provided with an upper conical valve flap 19 and a lower conical valve flap 20, the valve seat 11 is provided with an upper valve port 21 and a lower valve port 22 by matching the upper conical valve flap 19 and the lower conical valve flap 20, and the second connecting pipe 10 is connected with the top of the bellows cover 12 through a pressure guide pipe 23.
In the installation, the utility model discloses a 2 top-down inserts to this round hole of adapter sleeve, until first support along 6 bottoms and valve body 8 contacts, first support along 6 plays spacing effect, then to first support along 6 and valve body 8 junction carry out the seal weld of border, at the welded in-process, part welding liquid flows in to welding liquid holding tank 6a, can strengthen the connectivity, improves structural strength, is connected membrane box seat 1 through flange, screw and adapter sleeve 2 afterwards.
The working principle of the differential pressure balance valve is as follows: the diaphragm 13 divides the cavity enclosed by the diaphragm box cover 12 and the diaphragm box base 1 into an upper diaphragm cavity and a lower diaphragm cavity, the pressure in the first connecting pipe 9 is introduced into the upper diaphragm cavity through the pressure guiding pipe 23, if the pressure in the upper diaphragm cavity is greater than the control pressure of the spring 18, the diaphragm 13 drives the valve core 14 to move downwards, the upper conical valve flap 19 and the lower conical valve flap 20 are respectively close to the upper valve port 21 and the lower valve port 22, so that the passing area of the valve ports is reduced, namely the action of closing the valve ports is realized, when the pressure in the upper diaphragm cavity is less than the control pressure of the spring 18, the diaphragm 13 drives the valve core 14 to move upwards, the upper conical valve flap 19 and the lower conical valve flap 20 are respectively far away from the upper valve port 21 and the lower valve port 22, so that the passing area of the valve ports is.
In addition, the top of the capsule cover 12 is also connected with a pressure regulating pipe 24, the pressure regulating pipe 24 is provided with a valve 25, and pressure gas can be introduced into the upper cavity of the capsule through the pressure regulating pipe 24 to realize active control of pressure.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (8)
1. The utility model provides a pressure differential control valve connection structure, includes bellows seat and adapter sleeve, be provided with the movable chamber that can supply the diaphragm activity in the bellows seat, its characterized in that: the bottom of diaphragm capsule seat is provided with first connection flange dish, the cooperation of the top of adapter sleeve first connection flange dish is provided with the second connection flange dish, first connection flange dish passes through the screw connection with the second connection flange dish, the outside middle part of adapter sleeve is provided with first support edge, the inboard bottom of diaphragm capsule seat is provided with the second and holds in the palm the edge.
2. A differential pressure control valve connecting structure as defined in claim 1, wherein: and a plurality of mounting holes are formed in the outer side of the membrane box seat along the circumferential direction.
3. A differential pressure control valve connecting structure as defined in claim 1, wherein: the bottom on first support edge is provided with the welding liquid holding tank.
4. A differential pressure control valve connecting structure as defined in claim 3, wherein: the welding liquid holding tank is provided with a plurality of places along circumference is even.
5. A differential pressure control valve connecting structure as defined in claim 3, wherein: the welding liquid holding tank is an arc-shaped tank.
6. A differential pressure control valve connecting structure as defined in claim 3, wherein: the welding liquid holding tank is a square tank.
7. A differential pressure control valve connecting structure as defined in claim 1, wherein: and a sealing ring is arranged between the first connecting flange plate and the second connecting flange plate.
8. A differential pressure control valve characterized by: including the differential pressure control valve connecting structure according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285367.7U CN210266059U (en) | 2019-08-09 | 2019-08-09 | Differential pressure control valve connecting structure and differential pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285367.7U CN210266059U (en) | 2019-08-09 | 2019-08-09 | Differential pressure control valve connecting structure and differential pressure control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210266059U true CN210266059U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921285367.7U Active CN210266059U (en) | 2019-08-09 | 2019-08-09 | Differential pressure control valve connecting structure and differential pressure control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210266059U (en) |
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2019
- 2019-08-09 CN CN201921285367.7U patent/CN210266059U/en active Active
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