CN114658898A

CN114658898A - Auxiliary closing device for flap valve

Info

Publication number: CN114658898A
Application number: CN202210429300.6A
Authority: CN
Inventors: 吴钢; 林惠凤; 帅靖; 王阳; 张海峰; 唐明丰
Original assignee: China First Metallurgical Group Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-06-24
Anticipated expiration: 2042-04-22
Also published as: CN114658898B

Abstract

The application discloses a secondary closure for a flap valve. In the technical scheme, when the closing operation of the locking flap valve is implemented, firstly, the positioning rod is used for positioning the non-valve position of the flap valve; meanwhile, the valve of the flap valve is pressed and passed by the pressing rod of the ratchet pressing rod, the ratchet of the ratchet pressing rod stops the valve, and the valve of the flap valve is completely locked by the positioning of the positioning rod and the mutual matching of the ratchet pressing rod, so that the closing of the flap valve is locked. Because after the locating lever is positioned to the suitable position of clapping the door valve, only need rotate the depression bar, can implement the closure locking to clapping the door valve, improved the convenience of operation.

Description

Auxiliary closing device for flap valve

Technical Field

The application relates to the technical field of flap valve, in particular to an auxiliary closing device of a flap valve.

Background

In water supply and drainage engineering and water treatment engineering, a flap valve is usually installed at the tail end of a pipeline to play roles of non-return, overflow and backflow prevention, such as a water outlet pipe of a water pump, an outflow well of a pump station, a water inlet and outlet pipe of a water treatment structure, a sewage interception overflow well, a drainage pipeline tail end discharge port and the like. When the water pressure in the flap valve is higher than the pressure at the outer side, the flap valve is automatically opened to realize water inlet, and when the water pressure outside the flap valve is higher than the pressure at the inner side of the flap valve, the flap valve is automatically closed to realize non-return and backflow prevention.

When the flap valve is used as a communication valve of a water treatment structure, the backflow of inlet water in the structure is generally controlled. Since water treatment structures are often exposed to corrosive environments, process equipment needs to be periodically overhauled and replaced. Under the working condition, the flap valve is required to have a bidirectional sealing function so as to create conditions for safe maintenance construction. In order to prevent the flap valve from opening automatically when the water level in the tank is low. Thus, it is necessary to lock the closing of the flap valve.

In the related art, in order to lock the closing of the flap valve, a steel wire is generally used to bind and fix a wooden wedge, that is, the wooden wedge is used to press the flap valve so as to achieve locking and fixing. This operation requires a person to go into the tank, and is complicated.

Disclosure of Invention

In view of the above, the present application provides an auxiliary closing device for a flapper valve, which can lock the closing of the flapper valve in a simple operation.

An auxiliary closing device of a flap valve, comprising:

the adjusting seat is fixedly provided with a positioning rod and a ratchet wheel pressure rod;

the positioning rod is positioned on the non-valve position of the flap valve through the positioning port;

the ratchet pressure lever comprises a ratchet component and a pressure lever which are in transmission connection, the pressure lever can be pressed against a valve of the flap valve when being operated by external force to rotate along a preset direction, and the movement of the pressure lever in the direction opposite to the preset direction is stopped by the ratchet component until the valve is fixed under the assistance of the positioning rod so as to lock the closing of the closed valve.

Optionally, the positioning opening is U-shaped.

Optionally, the end of the ratchet press rod for pressing the second part of the flap valve is provided with a convex structure.

Optionally, the raised structure is wedge-shaped.

Optionally, a guide rod is further fixedly arranged on the adjusting seat.

Optionally, the end of the strut is provided with a first drag chain.

Optionally, the positioning rod is provided with a second drag chain.

The auxiliary closing device of the flap valve is provided, when the closing operation of the locking flap valve is carried out, firstly, the positioning rod is used for positioning the non-valve position of the flap valve; meanwhile, the valve of the flap valve is pressed and passed by the pressing rod of the ratchet pressing rod, the ratchet of the ratchet pressing rod stops the valve, and the valve of the flap valve is completely locked by the positioning of the positioning rod and the mutual matching of the ratchet pressing rod, so that the closing of the flap valve is locked. Because after the locating lever is positioned to the suitable position of clapping the door valve, only need rotate the depression bar, can implement the closure locking to clapping the door valve, improved the convenience of operation.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an auxiliary closing device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an auxiliary closing device according to another view of the present application.

Wherein the elements in the figures are identified as follows:

1-a guide rod; 2-an adjusting seat; 3-ratchet wheel compression bar; 4-a first drag chain; 5-a ratchet assembly; 6-flap valve; 6 a-a valve; 7-a flange portion; 8-positioning the rod; 9-a second drag chain; 10-a pressure bar.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Before the technical solutions of the present application are introduced, it is necessary to explain the background of the invention of the present application.

It is common in the related art that, in order to lock the closing of the flap valve, a wooden wedge is fixed by binding steel wires, i.e. the flap valve is pressed by the wooden wedge so as to achieve locking fixation. In this way, on the one hand, a person is required to go down into the tank, which in turn increases the difficulty of the operation. On the other hand, the position of inserting the wooden wedge into the flap valve has a strict requirement, and if the position of inserting the flap valve is not proper, the locking effect on the closing of the flap valve is poor, and the difficulty of operation is increased.

Based on the above-described problem that the inventors of the present invention have recognized, the auxiliary closing device of the flap valve, when performing the closing operation of locking the flap valve, first positions the positioning lever at the non-valve position of the flap valve; meanwhile, the valve of the flap valve is pressed and passed by the pressing rod of the ratchet pressing rod, the ratchet of the ratchet pressing rod stops the valve, and the valve of the flap valve is completely locked by the positioning of the positioning rod and the mutual matching of the ratchet pressing rod, so that the closing of the flap valve is locked. Because after the locating lever is positioned to the suitable position of clapping the door valve, only need rotate the depression bar, can implement the closure locking to clapping the door valve, improved the convenience of operation. Therefore, the invention is created.

Referring to fig. 1-2, the present application provides an auxiliary closing apparatus of a flapper valve 6, including:

the adjusting seat 2 is fixedly provided with a positioning rod 8 and a ratchet wheel pressure rod 3;

the positioning rod 8 is positioned at a non-valve 6a position of the flap valve 6 through a positioning port;

the ratchet press rod 3 comprises a ratchet wheel component 5 and a press rod 10 which are in transmission connection, the press rod 10 can be pressed against a valve 6a of the flap valve 6 when being operated by external force and rotated along a preset direction, and the ratchet wheel component 5 enables the press rod 10 to be stopped in the movement opposite to the preset direction until the valve 6a is fixed under the positioning assistance of the positioning rod 8 so as to lock the closing of the flap valve.

Although the subject matter "auxiliary closing device for flap valve 6" referred to herein carries the word "flap valve 6", these words superficially define that the only suitable object for the auxiliary closing device of the present application is flap valve 6. However, these words are to be understood as a context of use, which is merely an exemplary illustration and does not constitute a substantial limitation of the subject assisted closure devices.

It should be understood that the flap valve 6 is a type of self-opening valve 6a, and any other type of self-opening valve 6a is applicable to the present invention, as long as the purpose of improving the convenience of operation and avoiding the operation of closing operation in a deep fluid environment is achieved. For convenience of description, the flap valve 6 will be described as an example, and the description of the other self-opening valves 6a will be omitted to avoid brevity.

The construction and principle of the closing gate valve will not be described in detail herein in view of the common general knowledge in the art. Based on the known knowledge, it is understood that the position of the flapper valve 6 other than the valve 6a may be the mounting position of the flapper valve 6, such as the flange portion 77. The position involved in the closing or opening of flap valve 6 is naturally valve 6 a.

Having the ratchet assembly 5 and the pressing rod 10 in the above-mentioned transmission connection, it is quite easy for those skilled in the art to think of the specific connection relationship between the ratchet assembly 5 and the pressing rod 10 according to the expression that the pressing rod 10 and the ratchet assembly 5 are mutually supported or matched in function, that is, "the pressing rod 10 can be pressed against the valve 6a of the flap valve 6 when being operated by external force to rotate along the predetermined direction, and the pressing rod 10 is stopped by the ratchet assembly 5 to move along the direction opposite to the predetermined direction". Specifically, it is known that the ratchet assembly 5 is composed of a ratchet (sometimes referred to as a gear) and a holding pawl (sometimes referred to as a pawl). In the application, the compression bar 10 is fixedly connected with the stop pawl, the ratchet wheel is fixedly arranged on the adjusting seat 2, one end of the compression bar 10 is used for being operated by external force to rotate, and the other end of the compression bar is used for abutting against one end of the valve 6a of the flap valve 6. Or, the pressure lever 10 is fixedly connected with the ratchet wheel, the stop pawl is fixedly arranged on the adjusting seat 2, and the like.

The shape of the strut 10 may be an arc-shaped rod or a broken-line-shaped rod.

In some related art involving ratchet assemblies 5, the ratchet assemblies 5 may also be equipped with a torsion spring or the like for the ratchet or pawl to improve the stability of both rotationally by external forces.

The positioning structure of the positioning rod 8 may be similar to a snap-fit or plug-in manner. It is not to be misunderstood that there is no strict requirement for the firmness or tightness of positioning of the positioning rod 8.

As an exemplary implementation, the positioning opening is U-shaped.

This U-shaped location mouth, when the location operation, only need make the location mouth by flap valve 6 the non-valve 6a position insert can to save the accurate requirement to the position of inserting, improved the convenience of operation.

In an exemplary embodiment, the end of the plunger 10 that is used to press against the valve 6a (referred to as the contact end) is provided with a raised structure.

Here, the design considerations of the raised structure are: the convex structure prevents a slip caused by contact with the valve 6a of the flap valve 6. When the pressing rod 10 is operated by external force to rotate, the contact end of the pressing rod 10 is in a relative motion state relative to the valve 6a at any time. In the case of a relatively tight contact between the contact end of the pressure rod 10 and the valve 6a, a "slip" of the contact end of the pressure rod 10 on the valve 6a can easily occur during a relative movement with respect to the valve 6 a. To avoid this, the raised structure may function to eliminate slippage.

Illustratively, the raised structure is wedge-shaped. Other taper shapes are also possible.

In a typical embodiment, the adjusting seat 2 is further provided with a guide rod 1.

Here, the design considerations of the guide rod 1 are: facilitating the handling of the adjustment seat 2.

Furthermore, it is more important that the adjustment seat 2 is normally located below the surface of the fluid when the flap valve 6 is closed and locked. At this time, the position of the positioning lever 8 is not easily observed, so that the positioning operation of the positioning lever 8 to the predetermined position of the flapper valve 6 may be impaired. At this time, if the guide rod 1 is held above the liquid surface, the approximate positions of the positioning rod 8 and the flap valve 6 can be roughly known by referring to the guide rod 1.

The guide rod 1 and the adjusting seat 2 can be screwed or in any other way.

In an exemplary embodiment, the end of the strut 10 is provided with a first drag chain 4.

Thus, an external force is applied to the strut 10 through the first drag chain 4 to cause the strut 10 to be rotated.

In an exemplary embodiment, the above-mentioned parking lever 8 is provided with a second drag chain 9.

In this way, positioning assistance of the positioning rod 8 is facilitated by the second drag chain 9. In particular, the number of second traction chains 9 is two. When the flap valve 6 is closed and locked, the two second drag chains 9 are positioned on the left and right sides of the pipe, so that the flap valve 6 can be clamped from both sides.

The operation of the flap valve 6 for the closed-locking operation of the present application will now be described with respect to a common application scenario. It should be noted that this common embodiment is not to be taken as an identification basis for understanding the essential features of the technical problem to be solved as claimed in the present application, which is merely exemplary.

And S1, determining the sectional dimension of the flap valve 6 installed on site according to a drawing, and performing real object lofting on site according to the sectional dimension. The adjusting seat 2 and the positioning rod 8 are assembled to form a U-shaped structure, the adjusting seat 2 is adjusted according to the adjusting device for the section size of the bottom of the flap valve 6, one end of the adjusting seat can buckle the connecting flange part 7 at the bottom of the flap valve 6, and the opening edge of the ratchet wheel compression bar 3 at the other end can be attached to the lower part of the flap valve 6. The whole device and the bottom of the flap valve 6 can be kept in proper fit to ensure that the device can be smoothly arranged at the bottom of an underwater object during actual underwater operation.

S2, the guide rod 1 and the adjusted adjusting seat 2 are assembled through threaded connection, the ratchet pressure rod traction chain 4 is connected with the end part of the

ratchet pressure rod

3, 2 auxiliary traction chains 9 are respectively connected with the two sides of the bottom positioning rod 8 of the adjusting seat 2, and the auxiliary device can be stably fixed at the bottom of the flap valve 6 during actual operation.

S3, after the device is assembled, the device is inserted into a flap valve 6 in a biochemical pool in a reverse pipeline flow direction through a guide rod 1, one end of a positioning rod 8 is sleeved on a flange part 7, auxiliary drag chains 9 tighten the assisting devices on the left and right sides of the pipeline to stably buckle the bottom of the underwater flap valve 6, and then a ratchet pressure rod 3 is pulled through a ratchet pressure rod drag chain 4 to gradually close the flap valve 6. The ratchet wheel retaining mechanism arranged on the ratchet wheel pressure lever 3 enables the ratchet wheel pressure lever 3 to be pressed more and more tightly, and the effect that the flap valve 6 is closed to cut off water flow is achieved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims

1. An auxiliary closing device for a flap valve, comprising:

an adjusting seat, fixedly provided with a positioning rod and a ratchet wheel pressing rod;

the positioning rod is positioned on the non-valve position of the flap valve through the positioning opening;

the ratchet pressure lever comprises a ratchet component and a pressure lever which are in transmission connection, the pressure lever can be pressed against a valve of the flap valve when being operated by external force to rotate along a preset direction, the movement of the pressure lever in the direction opposite to the preset direction is stopped by the ratchet component until the pressure lever can stop the valve to lock the closing of the flap valve under the assistance of the positioning rod.

2. The assistive closure device of claim 1, wherein the positioning port is U-shaped.

3. The assisted closure device of claim 1, wherein the end of the pressure bar configured to press against the valve is provided with a raised structure.

4. The assisted closure device of claim 3, wherein the raised structure is wedge-shaped.

5. The auxiliary closing apparatus as claimed in claim 1, wherein a guiding rod is further fixed on the adjusting base.

6. The assisted closure device of claim 1, wherein an end of the strut is provided with a first drag chain.

7. The auxiliary closure device as claimed in claim 1, wherein said positioning rod is provided with a second drag chain.