Pipeline water hammer stopping and eliminating valve

Abstract

The utility model provides a pipeline water hammer stopping and eliminating valve. The pipeline water hammer stopping and eliminating valve comprises a valve outer sleeve; the valve inner core is connected to the inner wall of the valve outer sleeve; one end of the water stop top strip extends into the valve inner core in a nested manner and is connected with an adjusting piece arranged in the valve inner core; a water stopping rubber plug and a return spring arranged on the water stopping rubber plug are arranged at the end, away from the valve inner core, of the water stopping top strip, and the water stopping rubber plug is connected with the water stopping top strip through the return spring. According to the utility model, the gap formed between the water stop rubber plug and the sealing pipe orifice is gradually reduced in a relatively slow manner through the cooperation of continuous pushing actions, so that the water flow passing quantity of the valve is gradually reduced, the time from the closing action to the complete closing of the valve is prolonged, and the water hammer effect is prevented from being generated in the rapid closing process of the valve.

Description

Technical Field

[0001] The utility model belongs to the field of valves, and in particular relates to a pipeline water hammer prevention valve. Background Art

[0002] When a valve in a pipeline is suddenly closed, the flow velocity of the fluid in the pipeline will not return to zero instantly due to inertia, resulting in water hammer. Water hammer, also known as water impact, refers to the phenomenon that in the flow of fluid (including water, liquid and gas-liquid mixture) in the pipeline, the flow velocity suddenly changes due to the sudden opening and closing of the valve, the sudden start and stop of the water pump, etc., resulting in a large fluctuation in pressure;

[0003] The greatest harm of water hammer is that on the one hand it instantly destroys the outer wall of the pipeline, causing the pipeline to rupture; on the other hand it causes the pipeline to be in a state of alternating concentrated stress and relaxation for a long time, accelerating pipeline aging and greatly shortening its service life. Utility Model Content

[0004] The utility model provides a pipeline water hammer prevention valve, aiming to reduce the problem of adverse effects caused by water hammer during the current valve closing process.

[0005] The utility model is implemented as follows: a pipeline water hammer prevention valve comprises:

[0006] Valve outer sleeve;

[0007] A valve inner core, the valve inner core being connected to the inner wall of the valve outer sleeve;

[0008] A waterstop top strip, one end of which is nested and extends into the interior of the valve core and is connected to an adjusting member arranged inside the valve core; a waterstop rubber plug and a return spring arranged on the waterstop rubber plug are provided at the end of the waterstop top strip away from the valve core, and the waterstop rubber plug is connected to the waterstop top strip via the return spring.

[0009] Preferably, a water inlet pipe and a water outlet pipe are respectively provided at both ends of the valve outer sleeve, the connection between the valve outer sleeve and the water inlet pipe is a sealed pipe opening, and the water-stop rubber plug is pressed against the inner wall of the sealed pipe opening under the push of the water-stop top strip.

[0010] Preferably, one end of the return spring is connected to the water-stop rubber plug, and a supporting ring is provided on the water-stop top strip, and the supporting ring is connected to the end of the return spring away from the water-stop rubber plug.

[0011] Preferably, a return hole is provided on the water-stop rubber plug; the water-stop top strip will be inserted into the return hole during the continuous advancement process.

[0012] Preferably, the regulating member comprises a valve disc, a valve stem and a valve gear;

[0013] The valve stem extends from the outside of the valve outer sleeve through the valve outer sleeve side wall to the inside of the valve inner core. The valve gear is located at the end of the valve stem extending into the valve inner core. The valve disc is located at the end of the valve stem away from the valve gear.

[0014] Preferably, a guide groove is provided inside the valve inner core, the water-stop top strip slides in the guide groove, a rack structure is provided on one side of the water-stop top strip, and the water-stop top strip is rotationally connected to the valve gear through the rack structure.

[0015] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0016] 1. The pipeline water hammer prevention valve provided by the utility model adopts a return spring to replace the rigid contact. When the water-stop rubber plug is constantly approaching the pipe mouth, the water pressure will continue to increase, and the elastic force of the return spring will be used to resist the pressure exerted by the water pressure. The closer to the water-stop rubber plug, the greater the pressure is, and the smaller the distance it is pushed forward is, until the water-stop top strip body is against the water-stop rubber plug, and the water-stop rubber plug is directly pushed to move by the water-stop top strip. Through the continuous pushing action, the gap formed between the water-stop rubber plug and the sealed pipe mouth is gradually reduced in a more relaxed manner, thereby gradually reducing the water flow rate of the valve, extending the time from the start of the closing action to the complete closing of the valve, thereby avoiding the water hammer effect during the rapid closing of the valve.

[0017] 2. The pipeline water hammer prevention valve provided by the utility model is provided with a return hole 3 on the water-stop rubber plug; the water-stop top strip will be inserted into the return hole during the continuous advancement process, and the travel of the water-stop top strip is extended by adding the return hole, thereby increasing the time for the water-stop top strip body to reach the water-stop rubber plug, thereby avoiding the water hammer effect by delaying the valve closing time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a pipeline water hammer prevention valve provided by the utility model.

[0019] Figure 2 The utility model is a schematic diagram of the AA plane structure of a pipeline water hammer prevention valve provided by the utility model.

[0020] Figure 3 It is a BB plane structural schematic diagram of a pipeline water hammer prevention valve provided by the utility model.

[0021] Description of reference numerals:

[0022] 1. Water inlet pipe; 2. Water-stop rubber plug; 3. Return hole; 4. Return spring; 5. Water-stop top strip; 6. Valve outer sleeve; 7. Valve inner core; 8. Valve disc; 9. Valve stem; 10. Valve hole; 11. Valve gear; 12. Valve fixing column; 13. Water outlet pipe. DETAILED DESCRIPTION

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0024] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] The utility model provides a pipeline water hammer prevention valve, such as Figure 1-Figure 3 As shown, the pipeline water hammer prevention valve comprises:

[0026] A valve outer sleeve 6, wherein two ends of the valve outer sleeve 6 are respectively provided with a water inlet pipe 1 and a water outlet pipe 13;

[0027] A valve inner core 7, wherein the outer wall of the valve inner core 7 is provided with a valve fixing column 12, and the valve inner core 7 is fixed to the inner wall of the valve outer sleeve 6 through the valve fixing column 12;

[0028] A water stop top strip 5, one end of which is nested and extends into the interior of the valve inner core 7 and is connected to an adjusting member arranged inside the valve inner core 7; a water stop rubber plug 2 and a return spring 4 arranged on the water stop rubber plug 2 are arranged at one end of the water stop top strip 5 away from the valve inner core 7, and the water stop rubber plug 2 is connected to the water stop top strip 5 via the return spring 4;

[0029] In this embodiment, during the valve closing process, the water-stop rubber plug 2 will move toward the side of the water inlet pipe 1 under the action of the water-stop top strip 5. During the closing process, the return spring 4 provides elastic force to the water-stop rubber plug 2, so that the valve closing process time is extended as a whole, avoiding the water hammer effect caused by the rapid closing of the valve, and reducing the damage to the pipeline caused by the kinetic energy of the water hammer effect;

[0030] The water-stop rubber plug 2 will be pressed by the water pressure on the side of the water inlet pipe 1 during the closing process. Here, the return spring 4 is used to replace the rigid contact, so that the water-stop rubber plug 2 will delay the movement rate toward the side of the water inlet pipe 1 during the closing process of the valve, thereby extending the overall closing time of the valve, thereby avoiding the water hammer effect caused by the rapid closing process of the valve. At the same time, the return spring 4 is used for active delay, reducing the need for manual control by the operator and reducing the operating requirements for the operator;

[0031] As a preferred implementation in this embodiment, the regulating member includes a valve disc 8, a valve stem 9 and a valve gear 11;

[0032] The valve stem 9 extends from the outside of the valve outer sleeve 6 through the valve hole 10 provided on the side wall of the valve outer sleeve 6 to the inside of the valve inner core 7. The valve gear 11 is located at the end of the portion of the valve stem 9 extending into the valve inner core 7. The valve disc 8 is located at the end of the valve stem 9 away from the valve gear 11. The valve disc 8 operates the valve stem 9 to rotate.

[0033] The valve inner core 7 is provided with a guide groove inside, the water stop top strip 5 slides in the guide groove, a rack structure is provided on one side of the water stop top strip 5, the water stop top strip 5 is rotatably connected with the valve gear 11 through the rack structure, and the water stop top strip 5 performs linear motion under the rotation of the valve stem 9, pushing the water stop rubber plug 2 to block the pipe opening between the water inlet pipe 1 and the valve outer sleeve 6;

[0034] As a preferred implementation scheme in this embodiment, one end of the return spring 4 is connected to the waterstop rubber plug 2; a supporting ring is provided on the waterstop top strip 5, and the supporting ring is connected to the end of the return spring 4 away from the waterstop rubber plug 2. When the waterstop top strip 5 applies a thrust to the waterstop rubber plug 2, the waterstop rubber plug 2 will first convert the thrust generated by the waterstop top strip 5 into an elastic force and then use the elastic force to push the waterstop rubber plug 2; when the waterstop rubber plug 2 continues to approach the pipe orifice, the water pressure will continue to increase, and the elastic force of the return spring 4 will be used to resist the pressure applied by the water pressure, thereby reducing the moving distance of the waterstop rubber plug 2, until the main body of the waterstop top strip 5 is abutted against the waterstop rubber plug 2, and the waterstop rubber plug 2 is directly pushed to move by the waterstop top strip 5. In this process, the waterstop rubber plug 2 will not immediately block the valve, and the gap formed by the continuous pushing action in cooperation with the return spring 4 gradually allows the valve to be reduced, thereby avoiding the water hammer effect during the valve closing process;

[0035] In a further preferred embodiment of the utility model, a return hole 3 is provided on the water stop rubber plug 2; the water stop top strip 5 will be inserted into the return hole 3 during the continuous advancement process, and the travel of the water stop top strip 5 is extended by adding the return hole 3, and the time for the water stop top strip 5 body to reach the water stop rubber plug 2 is increased, and the water hammer effect is avoided by delaying the valve closing time;

[0036] In this embodiment, the return hole 3 and the return spring 4 cooperate with each other to keep the valve half-open for a long time, allowing the water flow to continue to slowly pass through the water stop rubber plug 2 from the water inlet pipe 1, thereby preventing the water flow from suddenly hitting the water stop rubber plug 2 to produce a water hammer effect, thereby extending the life of the pipeline and corresponding components;

[0037] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0038] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A pipeline water hammer prevention valve, It is characterized in that include: Valve outer sleeve; A valve inner core, the valve inner core being connected to the inner wall of the valve outer sleeve; A waterstop top strip, one end of which is nested and extends into the interior of the valve core and is connected to an adjusting member arranged inside the valve core; a waterstop rubber plug and a return spring arranged on the waterstop rubber plug are provided at the end of the waterstop top strip away from the valve core, and the waterstop rubber plug is connected to the waterstop top strip via the return spring.

2. A pipeline water hammer prevention valve as claimed in claim 1, It is characterized in that A water inlet pipe and a water outlet pipe are respectively arranged at both ends of the valve outer sleeve. The connection between the valve outer sleeve and the water inlet pipe is a sealed pipe opening. The water-stop rubber plug is pushed by the water-stop top strip and is held against the inner wall of the sealed pipe opening.

3. A pipeline water hammer prevention valve as claimed in claim 1, It is characterized in that One end of the return spring is connected to the water-stop rubber plug, and a supporting ring is provided on the water-stop top strip, and the supporting ring is connected to the end of the return spring away from the water-stop rubber plug.

4. A pipeline water hammer prevention valve as claimed in claim 3, It is characterized in that The water-stop rubber plug is provided with a return hole; the water-stop top strip will be inserted into the return hole during the continuous pushing process.

5. A pipeline water hammer prevention valve as claimed in claim 1, It is characterized in that The regulating member comprises a valve disc, a valve stem and a valve gear; The valve stem extends from the outside of the valve outer sleeve through the valve outer sleeve side wall to the inside of the valve inner core. The valve gear is located at the end of the valve stem extending into the valve inner core. The valve disc is located at the end of the valve stem away from the valve gear.

6. A pipeline water hammer prevention valve as claimed in claim 5, It is characterized in that A guide groove is provided inside the valve inner core, and the water-stopping top strip slides in the guide groove. A rack structure is provided on one side of the water-stopping top strip, and the water-stopping top strip is rotationally connected to the valve gear through the rack structure.

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