阅读说明：本技术 一种活塞式调流阀 (Piston type flow regulating valve ) 是由 何春焕 李士强 于 2019-10-11 设计创作，主要内容包括：本发明公开了一种活塞式调流阀,阀座安装在主阀体上,出水阀体可以安装,也可以不安装,两种结构长度,性能不改变,客户可根据工况具体情况选用(如安装空间受限,可以不安装出水阀体)。内胆上设有导轨块,用螺丝固定在内胆导轨筋处,解决了焊密封面过程中阀体开裂的风险,提高了产品合格率,同时也降低了制造成本。改变鼠笼结构形式,内部增加挡板,连接连接盘与连杆的第二销轴通过鼠笼内部的档板固定,解决了第二销轴脱落导致阀体失效的风险。连接曲柄与连杆的第一销轴在挨近曲柄的位置开设有安装槽,在安装槽内设有卡板,卡板上开两个螺栓孔,与曲柄用螺钉固定,解决了销轴脱落导致阀体失效的风险。(The invention discloses a piston type flow regulating valve, wherein a valve seat is arranged on a main valve body, a water outlet valve body can be arranged or not arranged, the lengths and the performances of the two structures are not changed, and a customer can select the valve according to specific conditions of working conditions (if the installation space is limited, the water outlet valve body can not be arranged). Be equipped with the guide rail piece on the inner bag, fix in inner bag guide rail muscle department with the screw, solved the risk of welding sealed face in-process valve body fracture, improved the product percent of pass, also reduced manufacturing cost simultaneously. The structural form of the squirrel cage is changed, the baffle is additionally arranged inside the squirrel cage, and the second pin shaft for connecting the connecting disc and the connecting rod is fixed through the baffle inside the squirrel cage, so that the risk that the valve body fails due to the fact that the second pin shaft falls off is solved. The mounting groove has been seted up in the position of being close to the crank to the first round pin axle of connecting crank and connecting rod, is equipped with the cardboard in the mounting groove, opens two bolt holes on the cardboard, with for the crank fix with screw, has solved the risk that the round pin axle drops and leads to the valve body inefficacy.)

1. The utility model provides a piston flow regulating valve, includes the main valve body (1), the both ends of the main valve body (1) are equipped with import and export respectively, are equipped with one end open-ended inner bag (2) in the main valve body (1), and the opening of inner bag (2) is towards the export of the main valve body (1), leaves the passageway that supplies the fluid to pass through between inner bag (2) and the main valve body (1), and the inside slip of inner bag (2) is provided with adjusting piston and is used for the drive adjusting piston's actuating mechanism, its characterized in that: the outlet of the main valve body (1) is provided with a valve seat (5), the adjusting piston is provided with a first sealing ring (6) which is matched with the valve seat (5) to realize sealing, the driving mechanism comprises a valve shaft (16), a crank (15) and a connecting rod (10), the valve shaft (16) is installed in the inner container (2), one end of the valve shaft (16) is located in the inner container (2), the other end of the valve shaft extends out of the main valve body (1) to be connected with a driving device (17), one end of the crank (15) is connected with the valve shaft (16), the other end of the crank (15) is hinged to the connecting rod (10) through a first pin shaft (11), a mounting groove is formed in the first pin shaft (11), a clamping plate (111) is arranged in the mounting groove, the clamping plate (111) is connected with the crank (15) through a screw, and the other.

2. a piston type flow regulating valve as claimed in claim 1, wherein: still include water valve body (4), water valve body (4) set up in the exit of main valve body (1).

3. a piston type flow regulating valve according to claim 1 or 2, wherein: the adjusting piston comprises a connecting disc (8), a squirrel cage (7) and a piston body (13), the connecting disc (8) comprises an annular supporting ring (81), two connecting plates (82) are arranged in the supporting ring (81) in parallel, the two connecting plates (82) are positioned at two sides of the connecting rod (10), the squirrel cage (7) is in a cylindrical shape with openings at two ends and is hinged with a connecting rod (10) through a second pin shaft (9), the cage (7) is provided with a grid hole (71), one end of the cage (7) close to the connecting disc (8) is connected with the support ring (81) through a screw, the inner side of one end of the squirrel cage (7) close to the connecting disc (8) is provided with a baffle plate (72) which extends inwards to the two sides of the second pin shaft (9), the piston body (13) is in a cylindrical shape with two open ends, one end close to the connecting disc (8) is provided with a ribbed plate (131), the rib plates (131) are embedded between the connecting disc (8) and the squirrel cage (7).

4. A piston type flow regulating valve as claimed in claim 3, wherein: the first sealing ring (6) is a T-shaped ring, and the first sealing ring (6) is arranged in a T-shaped groove formed by surrounding of the squirrel cage (7) and the piston body (13).

5. A piston type flow regulating valve as claimed in claim 1, wherein: the inner wall of the inner container (2) is provided with a guide rail block (12), and the adjusting piston slides on the guide rail block (12).

6. A piston type flow regulating valve as claimed in claim 1, wherein: and a second sealing ring (3) is arranged between the valve seat (5) and the main valve body (1).

7. A piston type flow regulating valve as claimed in claim 3, wherein: and a third sealing ring (14) is arranged between the piston body (13) and the inner container (2).

Technical Field

The invention relates to the technical field of valves, in particular to a piston type flow regulating valve.

Background

The piston type flow regulating valve controls the opening of the valve according to the back and forth movement of a piston in the valve body, thereby effectively controlling the flow, the pressure and the like. The flow channel in the piston valve is in an axial symmetry shape, when the valve is opened, water flow is converged at the outlet, no turbulent flow is generated when fluid flows through, and cavitation is effectively eliminated; when the piston valve is fully closed, the water flow is effectively prevented, zero leakage is achieved, and therefore transmission of upstream pressure is avoided.

the existing piston type flow regulating valve has the following defects:

1) The valve seat is installed between the water outlet valve body and the main valve body, the length of the valve structure is fixed and cannot be adjusted, and some pipelines cannot be normally installed due to space limitation.

2) In order to prevent the relative motion surface of the liner and the piston from rusting to influence sealing, copper is overlaid and welded at the guide rail rib of the liner. The valve body is easy to crack due to local heating in the surfacing process, the cracked valve body can only be scrapped, the qualification rate is influenced, and the manufacturing cost is increased.

3) The piston and the squirrel cage are opened and closed by means of the movement of the connecting rod, the connecting disc is connected with the connecting rod through a pin shaft, the crank is connected with the connecting rod through a connecting rod, one end of the pin shaft is buried in the hole, the other end of the pin shaft is covered by an end cover, the end cover is fixed with the connecting disc through a bolt, the bolt head is punched in order to prevent the bolt from loosening and falling under the action of medium scouring, and the bolt head is strung and tightly twisted by using iron wires, as shown. The defects are that the diameter of an iron wire is thin, the iron wire is easy to corrode and break after being contacted with a medium for a long time, a bolt is loosened, an end cover and a pin shaft fall off, a connecting disc is separated from a connecting rod, a piston and a squirrel cage cannot act, and a valve fails.

Disclosure of Invention

the invention aims to overcome the defects of the prior art and provide a piston type flow regulating valve.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the utility model provides a piston flow regulating valve, includes the main valve body, and the both ends of the main valve body are equipped with import and export respectively, and the internal inner bag that is equipped with one end open-ended of main valve, the opening of inner bag towards the export of the main valve body, leave the passageway that supplies the fluid to pass through between the inner bag and the main valve body, the inside slip of inner bag is provided with adjusting piston and is used for driving adjusting piston's actuating mechanism, the exit of the main valve body is equipped with the disk seat, be equipped with on the adjusting piston and realize sealed first sealing washer with the disk seat cooperation.

The water outlet valve body is arranged at the outlet of the main valve body.

According to a further technical scheme, the driving mechanism comprises a valve shaft, a crank and a connecting rod, the valve shaft is installed in the inner container, one end of the valve shaft is located in the inner container, the other end of the valve shaft extends out of the main valve body and is connected with the driving device, one end of the crank is connected with the valve shaft, the other end of the crank is hinged with the connecting rod through a first pin shaft, and the other end of the connecting rod is connected with the adjusting piston.

According to a further technical scheme, the first pin shaft is provided with a mounting groove, a clamping plate is arranged in the mounting groove, and the clamping plate is connected with the crank through a screw.

The technical scheme is that the adjusting piston comprises a connecting disc, a squirrel cage and a piston body, the connecting disc comprises an annular supporting ring, two connecting plates are arranged in the supporting ring in parallel and located on two sides of a connecting rod and hinged to the connecting rod through a second pin shaft, the squirrel cage is in a cylindrical shape with two open ends, grid holes are formed in the squirrel cage, one end, close to the connecting disc, of the squirrel cage is connected with the supporting ring through screws, a baffle extending inwards to two sides of the second pin shaft is arranged on the inner side of one end, close to the connecting disc, of the squirrel cage, the piston body is in a cylindrical shape with two open ends, a rib plate is arranged at one end, close to the connecting disc, and the.

According to a further technical scheme, the first sealing ring is a T-shaped ring and is arranged in a T-shaped groove formed by enclosing of the squirrel cage and the piston body.

According to a further technical scheme, a guide rail block is arranged on the inner wall of the inner container, and the adjusting piston slides on the guide rail block.

A second sealing ring is arranged between the valve seat and the main valve body.

The technical scheme is that a third sealing ring is arranged between the piston body and the inner container.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

1) The disk seat is installed on the main valve body, and the play water valve body can install, also can not install, and two kinds of structure length, the performance do not change, and the customer can select for use according to operating mode particular case (if installation space is limited, can not install out the water valve body).

2) Be equipped with the guide rail piece on the inner bag, fix in inner bag guide rail muscle department with the screw, solved the risk of welding sealed face in-process valve body fracture, improved the product percent of pass, also reduced manufacturing cost simultaneously.

3) the structural form of the squirrel cage is changed, the baffle is additionally arranged inside the squirrel cage, and the second pin shaft for connecting the connecting disc and the connecting rod is fixed through the baffle inside the squirrel cage, so that the risk that the valve body fails due to the fact that the second pin shaft falls off is solved.

4) The mounting groove has been seted up in the position of being close to the crank to the first round pin axle of connecting crank and connecting rod, is equipped with the cardboard in the mounting groove, opens two bolt holes on the cardboard, with for the crank fix with screw, has solved the risk that the round pin axle drops and leads to the valve body inefficacy.

Drawings

FIG. 1 is a schematic diagram of a prior art configuration;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is an enlarged schematic view of section A of FIG. 2;

FIG. 4 is a view in the direction B-B in FIG. 2;

FIG. 5 is an enlarged schematic view of section C of FIG. 4;

FIG. 6 is a schematic view of the structure at the second pin;

fig. 7 is a schematic diagram of the structure of the squirrel cage.

In the figure: 1. a main valve body; 2. an inner container; 3. a second seal ring; 4. a water outlet valve body; 5. a valve seat; 6. a first seal ring; 7. a mouse cage; 71. grid holes; 72. a baffle plate; 8. a connecting disc; 81. a support ring; 82. a connecting plate; 9. a second pin shaft; 10. a connecting rod; 11. a first pin shaft; 111. clamping a plate; 12. a guide rail block; 13. a piston body; 131. a rib plate; 14. a third seal ring; 15. a crank; 16. a valve shaft; 17. a drive device.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 2-7, a piston type flow regulating valve includes a main valve body 1, an inlet and an outlet are respectively disposed at two ends of the main valve body 1, a liner 2 with an opening at one end is disposed in the main valve body 1, the opening of the liner 2 faces the outlet of the main valve body 1, a channel for fluid to pass through is reserved between the liner 2 and the main valve body 1, an adjusting piston and a driving mechanism for driving the adjusting piston are slidably disposed in the liner 2, a valve seat 5 is disposed at the outlet of the main valve body 1, the valve seat 5 is mounted at the outlet of the main valve body 1 through a screw, and a first sealing ring 6 which is matched with the valve seat 5 to realize sealing is disposed on the adjusting piston.

Still include a water valve body 4, a water valve body 4 sets up in the exit of main valve body 1. The valve seat 5 is installed on the main valve body 1, and the outlet valve body 4 can be installed or not installed, and two kinds of structure length, performance do not change, and the customer can choose for use according to operating mode particular case, if installation space is limited, can not install outlet valve body 4.

The driving mechanism comprises a valve shaft 16, a crank 15 and a connecting rod 10, the valve shaft 16 is installed in the inner container 2, one end of the valve shaft 16 is located in the inner container 2, the other end of the valve shaft extends out of the main valve body 1 and is connected with a driving device 17, one end of the crank 15 is connected with the valve shaft 16, the other end of the crank 15 is hinged with the connecting rod 10 through a first pin shaft 11, and the other end of the connecting rod 10 is connected with the adjusting piston.

an installation groove is formed in the first pin shaft 11, a clamping plate 111 is arranged in the installation groove, and the clamping plate 111 is connected with the crank 15 through a screw. In this embodiment, the catch plate 111 is connected to the crank 15 by two screws.

The adjusting piston comprises a connecting disc 8, a squirrel cage 7 and a piston body 13, the connecting disc 8 comprises an annular supporting ring 81, two connecting plates 82 are arranged in the supporting ring 81 in parallel, the two connecting plates 82 are located on two sides of a connecting rod 10 and hinged to the connecting rod 10 through a second pin shaft 9, the squirrel cage 7 is in a cylindrical shape with two open ends, a grid hole 71 is formed in the squirrel cage 7, one end, close to the connecting disc 8, of the squirrel cage 7 is connected with the supporting ring 81 through a screw, a baffle plate 72 extending inwards to two sides of the second pin shaft 9 is arranged on the inner side of one end, close to the connecting disc 8, of the squirrel cage 7, the piston body 13 is in a cylindrical shape with two open ends, a rib plate 131 is arranged at one end, close to the connecting disc.

in this embodiment, the first sealing ring 6 is a T-shaped ring, and the first sealing ring 6 is disposed in a T-shaped groove defined by the squirrel cage 7 and the piston body 13. The inner wall of the inner container 2 is provided with a guide rail block 12, and the adjusting piston slides on the guide rail block 12. And a second sealing ring 3 is arranged between the valve seat 5 and the main valve body 1. A third sealing ring 14 is arranged between the piston body 13 and the inner container 2.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.