CN216643186U

CN216643186U - Pin shaft valve clack assembly and check valve

Info

Publication number: CN216643186U
Application number: CN202220012553.9U
Authority: CN
Inventors: 刘时敏; 郝桂彬; 陈佑忠
Original assignee: Baowu Water Technology Co Ltd
Current assignee: Baowu Water Technology Co Ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-05-31
Anticipated expiration: 2032-01-05

Abstract

The utility model provides a pin shaft valve clack assembly and a check valve, which comprise a pin shaft and a valve clack; the pin shaft is provided with a limiting groove arranged on the periphery, and the angle formed by the extending direction of the limiting groove and the axial direction of the pin shaft is less than 90 degrees; the valve clack is movably connected with the pin shaft along the axial direction and the circumferential direction of the pin shaft; the valve clack is provided with a connecting piece, and the connecting piece is movably arranged in the limiting groove along the extending direction of the limiting groove. Therefore, by lengthening the movement track of the valve clack before reaching the closed position, a certain water flow impact force is still kept by the valve clack before the valve seat hole is closed, so that the automatic cleaning function is realized, the clean state between the valve clack and the valve seat hole is kept, and the problems of untight closing and incomplete opening of the check valve are fundamentally solved.

Description

Pin shaft valve clack assembly and check valve

Technical Field

The utility model relates to the field of mechanical equipment, in particular to a hinge pin valve clack assembly and a check valve.

Background

The check valve is a valve which can automatically open and close the valve clack by medium flowing to prevent medium from flowing backwards, and has the main functions of preventing medium from flowing backwards at the outlet of the pump, preventing the pump and a driving motor from reversing and the like, and has important function on the safe and stable operation of equipment. In a turbid water treatment scene, due to the fact that more impurities are contained in turbid water, the impurities can be clamped between the valve clack and the valve seat hole frequently, the non-closed and non-fully opened check valve is caused, the function of the check valve cannot be effectively exerted, the pipe resistance of the whole system is increased, and more energy consumption is consumed.

In the whole process of the operation of the check valve, the check valve is automatically opened and closed through the movement of the medium, and impurities in turbid water form an adhesion condition on the valve clack, so that the check valve can be cleaned only when being disassembled and overhauled. The medium flow rate is fast, so that under the condition of large pressure difference, the fast movement of the valve clack can tightly press impurities on a contact surface between the valve clack and a valve seat hole, the contact surface is not smooth, even the contact surface is directly damaged, and the opening and closing of the check valve are affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pin shaft valve clack assembly and a check valve, and aims to solve the problem that impurities are clamped between a valve clack and a valve seat hole to reduce the working efficiency of the check valve.

In order to achieve the above object, the present invention provides a pin valve flap assembly, comprising: a pin shaft and a valve clack;

the pin shaft is provided with a limiting groove arranged on the periphery, and the angle formed by the extending direction of the limiting groove and the axial direction of the pin shaft is less than 90 degrees;

the valve clack is movably connected with the pin shaft along the axial direction and the circumferential direction of the pin shaft; the valve clack is provided with a connecting piece, and the connecting piece is movably arranged in the limiting groove along the extending direction of the limiting groove.

Optionally, an angle formed between the extending direction of the limiting groove and the axial direction of the pin shaft is less than 45 °.

Optionally, the extending direction of the limiting groove is spiral.

Optionally, the pin shaft includes a threaded section and a main body section connected to the threaded section; the thread section is provided with an external thread, and the major diameter of the thread section is smaller than the outer diameter of the main body section;

the limiting groove is formed in the main body section, and one end of the limiting groove in the extending direction is open at the connecting position of the main body section and the threaded section.

Optionally, the threaded section is in transitional connection with the main body section.

In order to solve the above technical problem, the present invention also provides a check valve, including: the valve body and the pin shaft valve clack component are arranged on the valve body;

the valve body is provided with a pin hole and a valve seat hole, and the pin shaft is arranged in the pin hole in a penetrating manner;

the valve clack rotates around the pin shaft to close the valve seat hole or open the valve seat hole; the valve clack rotates around the pin shaft, and simultaneously moves along the axial direction of the pin shaft under the limit of the limit groove.

Optionally, the valve body has an internal cavity; the valve clack is accommodated in the inner cavity;

the axial width of the inner cavity along the pin shaft is larger than that of the valve clack along the pin shaft, so that the valve clack is allowed to move in the inner cavity along the axial direction of the pin shaft.

Optionally, one end of the pin hole in the axial direction is a pin hole formed in the valve body, and one end of the pin shaft penetrates through the pin hole.

Optionally, the pin shaft is fixedly connected in the pin hole.

Optionally, the valve seat bore is perpendicular to the pin bore.

The hinge pin valve clack assembly and the check valve provided by the utility model have the following beneficial effects:

1) in the pin shaft valve clack assembly and the check valve provided by the utility model, the pin shaft valve clack assembly comprises: a pin shaft and a valve clack; the pin shaft is provided with a limiting groove arranged on the periphery, and the angle formed by the extending direction of the limiting groove and the axial direction of the pin shaft is less than 90 degrees; the valve clack is movably connected with the pin shaft along the axial direction and the circumferential direction of the pin shaft; the valve clack is provided with a connecting piece, and the connecting piece is movably arranged in the limiting groove along the extending direction of the limiting groove.

So dispose, because the connecting piece has been injectd the direction of movement by the spacing groove, and the angle between spacing groove and the round pin axle is less than 90 again, so, the valve clack can drive the connecting piece and move along spacing groove extending direction in the spacing groove when round pin axle rotates, and then lengthened the valve clack and arrived the motion orbit before the closed position, make the valve clack before closed valve seat hole, the fluid that flows through the check valve still remains certain impact force, realize the self-cleaning function, kept the clean state between valve clack and the valve seat hole, fundamentally has solved the check valve and has closed not tight, the incomplete condition of opening.

2) Because the clean state between valve clack and the valve seat hole obtains improving, consequently the motion performance of whole valve body obtains effectively promoting, and the resistance obviously descends, has effectively improved the performance of whole device.

3) The valve clack deflects in the motion direction when reaching the closed position, so that the closing mode of the valve clack to the valve seat hole is changed from direct impact closing in conventional setting into inclined closing with an angle, the high-speed impact brought by the valve clack is effectively reduced, the joint surface between the valve clack and the valve seat hole is effectively protected, and the service life of the whole device is prolonged.

Drawings

FIG. 1 is a schematic view of a pin according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of a pin bore of an embodiment of the present invention;

FIG. 3 is a schematic view of a check valve according to an embodiment of the present invention.

Wherein the reference numerals are:

10-a pin shaft; 101-a limiting groove; 102-a body segment; 103-a thread segment; 20-a valve flap; 201-a connector; 30-a valve body; 301-pin holes; 302-blind hole; 303-valve seat orifice; 304-lumen.

Detailed Description

The following describes in more detail embodiments of the present invention with reference to the schematic drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures shown in the drawings are often part of actual structures. In particular, the drawings may require different emphasis, sometimes on different proportions.

As used in this application, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally employed in a sense including "and/or," the terms "a" and "an" are generally employed in a sense including "at least one," the terms "at least two" are generally employed in a sense including "two or more," and the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or at least two of that feature, "one end" and "the other end" and "proximal end" and "distal end" generally refer to the corresponding two parts, including not only the endpoints. Furthermore, as used herein, the terms "mounted," "connected," and "disposed" on another element should be construed broadly and generally merely indicate that a connection, coupling, fit, or drive relationship exists between the two elements, and a connection, coupling, fit, or drive relationship between the two elements, whether direct or indirect through intervening elements, should not be construed as indicating or implying any spatial relationship between the two elements, i.e., an element may be located in any orientation within, outside, above, below, or to one side of another element unless the content clearly indicates otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. Moreover, directional terminology, such as above, below, up, down, upward, downward, left, right, etc., is used with respect to the exemplary embodiments as they are shown in the figures, with the upward or upward direction being toward the top of the corresponding figure and the downward or downward direction being toward the bottom of the corresponding figure.

The following description refers to the accompanying drawings.

Please refer to fig. 1 to 3, wherein fig. 1 is a schematic diagram of a pin according to an embodiment of the present invention; FIG. 2 is a schematic illustration of a pin bore of an embodiment of the present invention; FIG. 3 is a schematic view of a check valve according to an embodiment of the present invention.

Referring to fig. 1 and fig. 3, an embodiment of the utility model provides a pin valve flap assembly, which includes: a pin 10 and a flap 20; the pin shaft 10 is provided with a limiting groove 101 formed in the periphery, and an angle formed between the extending direction of the limiting groove 101 and the axial direction of the pin shaft 10 is smaller than 90 degrees; the valve clack 20 is movably connected with the pin shaft 10 along the axial direction and the circumferential direction of the pin shaft 10; the valve flap 20 has a connecting member 201, and the connecting member 201 is movably disposed in the limiting groove 101 along the extending direction of the limiting groove 101. In an alternative example, the pin flap assembly may be used in a check valve as shown in fig. 3. Of course, in other embodiments, the pin valve flap assembly may also be applied to other application scenarios, and the present invention is not limited thereto. The check valve shown in fig. 3, which includes the valve body 30 and the pin flap assembly as described above, is described as an example. The valve body 30 is provided with a pin hole 301 and a valve seat hole 303, and the pin shaft 10 is arranged in the pin hole 301 in a penetrating way; the valve flap 20 is rotatably disposed around the pin 10 to close the valve seat hole 303 or open the valve seat hole 303; the valve flap 20 moves in the axial direction of the pin 10 (in the direction perpendicular to the paper in fig. 3) while rotating around the pin 10 under the restriction of the limiting groove 101.

Optionally, the valve flap 20 has a pin hole, an inner diameter of the pin hole is slightly larger than an outer diameter of the pin 10, and the valve flap 20 is movably sleeved on the pin 10 through the pin hole. The connecting piece 201 is arranged in the pin shaft hole in an inward protruding mode. So configured, the valve flap 20 is limited in moving direction by the limiting groove 101 through the connecting piece 201.

Specifically, in this embodiment, an angle between the extending direction of the limiting groove 101 and the axial direction of the pin 10 is smaller than 90 °, and the connecting member 201 is limited by the limiting groove 101, so that the valve flap 20 rotates along the pin 10 while the connecting member 201 is driven to move in the limiting groove 101 along the extending direction of the limiting groove 101, and in fact, the valve flap 20 swings along the axial direction of the pin 10 in addition to rotating around the pin 10, thereby lengthening the moving track of the valve flap 20 before reaching the closed position. Therefore, before the valve seat hole 303 is closed, the fluid flowing through the check valve still keeps certain impact force, so that the automatic cleaning function is favorably realized, the cleaning state between the valve flap 20 and the valve seat hole 303 is kept, and the problems of untight closing and incomplete opening of the check valve are fundamentally solved. Meanwhile, the movement direction of the valve flap 20 when the valve flap reaches the closed position is deflected to a certain extent, in other words, the closing mode of the valve flap 20 to the valve seat hole 303 in the embodiment is changed from direct impact closing in the conventional setting to inclined closing with an angle, so that high-speed impact caused by the valve flap 20 is effectively reduced, the joint surface between the valve flap 20 and the valve seat hole 303 is effectively protected, and the service life of the whole device is prolonged.

Further, an angle formed by the extending direction of the limiting groove 101 and the axial direction of the pin shaft 10 is smaller than 45 degrees, so that the movement displacement of the connecting piece 201 along the axial direction of the pin shaft 10 is larger than the movement displacement of the connecting piece 201 along the circumferential direction of the pin shaft, the movement track of the valve clack 20 before reaching the closing position is further lengthened, and the closing speed of the valve clack 20 is reduced.

As shown in fig. 1, the extending direction of the limiting groove 101 is optionally spiral, that is, the valve clack 20 is linearly changed when the valve clack is axially moved to reach the closed position. Of course, in other embodiments, the extending direction of the limiting groove 101 is not limited to be spiral, but may be other zigzag or curved lines, such as parabolic, etc., so that the axial displacement of the valve flap 20 along with the rotation is non-linearly changed. Those skilled in the art can configure the device according to actual needs, and the utility model is not limited thereto.

With continued reference to fig. 1, the pin 10 includes a threaded section 103 and a main body section 102 connected to the threaded section 103; the thread section 103 is provided with an external thread to facilitate assembly with the valve body 30, and the major diameter of the thread section 103 is smaller than the outer diameter of the main body section 102; the limiting groove 101 is formed in the main body section 102, and one end of the limiting groove 101 in the extending direction is open at the joint of the main body section 102 and the threaded section 103, so that a certain space is provided for the connection between the connecting piece 201 and the pin shaft 10.

Optionally, the threaded section 103 is in transitional connection with the main body section 102. It should be noted that, here, the transition connection between the threaded section 103 and the main body section 102 means that a folded surface connection with an angle greater than 90 ° is formed between the threaded section 103 and the main body section 102, and the radially outer dimension is not stepped. Preferably, the transitional connection may also be a smooth connection between the threaded section 103 and the main body section 102, that is, a smooth curved surface connection is adopted in the connection area on the premise of ensuring an included angle between the threaded section and the main body section. The transition connection between the threaded section 103 and the main body section 102 is beneficial to reducing stress concentration at the junction of the two.

In an exemplary embodiment, the threaded section 103 is provided with an external thread having a length of 225mm and a major diameter of 55mm, and the main body section 102 and the threaded section 103 are transitionally connected by a chamfered section having a length of 5mm, and the angle between the chamfered section and the axis of the pin shaft 10 may be 45 °. It should be noted that the threaded section 103, the main body section 102 and the chamfered section are only an example of the pin 10 and are not limited thereto, and those skilled in the art can select different sizes of the pin 10 according to different specifications of the check valve.

With continued reference to fig. 3, the valve body 30 has an internal cavity 304, and the valve flap 20 is received in the internal cavity 304; the axial width of the cavity 304 (the dimension perpendicular to the plane of the paper in fig. 3) along the pin 10 is greater than the axial width of the flap 20 along the pin 10, so as to allow the flap 20 to move axially along the pin 10 in the cavity 304. For a typical check valve, the interior cavity 304 of the valve body 30 is generally adapted to the width of the flap 20. Since the flap 20 of the pin-and-pin flap assembly of the present embodiment swings along the axial direction of the pin 10, the width of the inner cavity 304 needs to be increased to allow the flap 20 to swing therein.

As shown in fig. 1 and 2, one end of the pin hole 301 along the axial direction is a blind hole 302 formed in the valve body 30, one end of the pin 10 penetrates through the blind hole 302, and the pin 10 is fixedly connected to the blind hole 302. Preferably, the axis of the valve seat bore 303 is perpendicular to the axis of the pin bore 301. In one example, the inner cavity 304 extends to the pin hole 301, so that the valve body 30 includes front and rear outer walls at the location of the pin hole 301, and the pin hole 301 includes two sections, one of which is a through hole that extends through the front outer wall of the valve body 30; the other section of the pin hole 301 is a blind hole 302 which is provided in the rear outer wall of the valve body 30 and opens toward the front outer wall. So configured, the pin 10 can pass through the through hole on the front outer wall of the valve body 30 from the outside, further pass through the blind hole 302 on the rear outer wall of the valve body 30, and be fixedly connected with the blind hole 302. Thus, the pin 10 does not rotate relative to the valve body 30, and the valve flap 20 is restricted from axial oscillation when rotating relative to the pin 10. The mutual fixation between the pin shaft 10 and the valve clack 20 in the conventional design is avoided, the jamming caused by the rotation of the pin shaft 10 relative to the pin hole 301 is avoided, and meanwhile, the corrosion caused by the jamming is also effectively avoided.

Referring to fig. 3, the usage principle of the check valve provided in this embodiment is further described, before the fluid enters the valve body 30, the valve flap 20 is in the closed position, and the valve seat hole 303 is closed (in this case, the state is shown in fig. 3); when fluid enters the valve body 30 (from the left in fig. 3) and contacts the valve flap 20 through the valve seat orifice 303, the valve flap 20 is lifted by the fluid pressure, and the fluid enters the inner cavity 304; when the fluid flow is reduced and the pressure is not enough to counteract the self-gravity of the valve flap 20, or under the reverse flow pressure of the fluid, the valve flap 20 rotates to the closed position, and meanwhile, the valve flap 20 moves axially along the pin shaft 10 under the limitation of the limiting groove 101 of the valve flap 20, so that the motion track of the valve flap 20 before reaching the closed position is lengthened, more fluid flowing in the valve body 30 can flush the valve seat hole 303, and the fluid flowing in the valve body 30 can have more time to flush the valve flap 20, so that the automatic cleaning of the valve flap 20 before closing the valve seat hole 303 is realized, and the cleaning state between the valve flap 20 and the valve seat hole 303 is maintained. In the whole process, the pin 10 is fixed in the blind hole 302 through the engagement of the threaded section 103 and the internal thread on the blind hole 302, and cannot rotate along with the rotation of the valve clack 20.

In summary, in the hinge pin valve flap assembly and the check valve provided in the present invention, the hinge pin valve flap assembly includes: a pin shaft and a valve clack; the pin shaft is provided with a limiting groove arranged on the periphery, and the angle formed by the extending direction of the limiting groove and the axial direction of the pin shaft is less than 90 degrees; the valve clack is movably connected with the pin shaft along the axial direction and the circumferential direction of the pin shaft; the valve clack is provided with a connecting piece, and the connecting piece is movably arranged in the limiting groove along the extending direction of the limiting groove.

Furthermore, because the clean state between the valve clack and the valve seat hole is improved, the motion performance of the whole valve body is effectively improved, the resistance is obviously reduced, and the performance of the whole device is effectively improved.

Furthermore, the movement direction of the valve clack when the valve clack reaches the closing position deflects, so that the closing mode of the valve clack to the valve seat hole is changed from direct impact closing in conventional setting into inclined closing with an angle, high-speed impact caused by the valve clack is effectively reduced, a joint surface between the valve clack and the valve seat hole is effectively protected, and the service life of the whole device is prolonged.

It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.

It should be noted that, although the present invention has been described with reference to the preferred embodiments, the above embodiments are not intended to limit the present invention. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the utility model without departing from the scope of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention, unless the content of the technical solution of the present invention is departed from.

Claims

1. A pin shaft valve clack assembly is characterized by comprising a pin shaft and a valve clack;

2. The pin valve flap assembly of claim 1, wherein the limiting groove extends at an angle of less than 45 ° to the axial direction of the pin.

3. The pin shaft valve flap assembly of claim 1, wherein the limiting groove extends in a spiral shape.

4. The pin valve flap assembly of claim 1, wherein the pin comprises a threaded section and a body section connected to the threaded section;

the thread section is provided with an external thread, and the major diameter of the thread section is smaller than the outer diameter of the main body section;

5. The pin valve flap assembly of claim 4, wherein the threaded section is transitionally connected to the main body section.

6. A check valve, comprising: a valve body and a pin shaft valve clack assembly as claimed in any one of claims 1-5;

the valve clack is rotatably arranged around the pin shaft and used for closing the valve seat hole or opening the valve seat hole; the valve clack rotates around the pin shaft, and simultaneously moves along the axial direction of the pin shaft under the limit of the limit groove.

7. The check valve of claim 6, wherein the valve body has an internal cavity; the valve clack is accommodated in the inner cavity;

8. The check valve of claim 6, wherein one axial end of the pin hole is a blind hole formed in the valve body, and one end of the pin shaft is inserted into the blind hole.

9. The check valve of claim 8, wherein the pin is fixedly attached within the pin bore.

10. The check valve of claim 6, wherein the valve seat bore is perpendicular to the pin bore.