Novel flow-controllable check valve

Abstract

The utility model relates to the technical field of valves, and discloses a novel flow-controllable check valve, which comprises a valve body and a valve rod, the upper surface of the valve body is fixedly connected with a valve cover, the periphery of the upper surface of the valve rod is fixedly connected with a first sealing ring, the lower surface of the valve rod is fixedly connected with a valve clack, and the valve clack is fixedly connected with a second sealing ring. A second sealing ring is fixedly connected to the periphery of the lower surface of the valve clack, an adjusting mechanism is arranged in the middle of the lower surface of the valve clack and comprises a flow limiting sleeve, and a plurality of adjusting holes are formed in a sleeve body of the flow limiting sleeve. Compared with most existing flow-controllable check valves, the flow-controllable check valve has the advantages that the first sealing ring is arranged on the upper surface of the valve rod to protect the spring from being corroded by media, the service life of the check valve is prolonged, and meanwhile, the second sealing ring is arranged on the periphery of the lower surface of the valve clack to prevent the spring from being corroded by the media when the media flow back. The valve clack and the drain hole are sealed through the sealing ring, and therefore medium backflow is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field especially relates to a novel controllable flow check valve. BACKGROUND

[0002] The check valve is a kind of valve, and the opening and closing member realizes automatic opening and closing by the medium pressure and its own weight, is widely used in petroleum, chemical industry, electric power etc., can effectively block medium backflow, ensure that fluid unidirectional flow, protect the safety and stability of equipment and pipeline.

[0003] The working principle of check valve is that when medium flows into from inlet end, valve flap is opened under the action of medium pressure, and medium can flow, when medium backflows, valve flap is closed under the double action of its own weight and backflow medium pressure, to prevent medium backflow, but the opening of valve flap and valve port of traditional partial check valve cannot be adjusted, so the flow of check valve cannot be controlled.

[0004] Therefore, the skilled person in the art provides a novel controllable flow check valve to solve the problems in the above background. UTILITY MODEL CONTENTS

[0005] The utility model discloses a novel controllable flow check valve is provided to solve the problems in the above background, compared with traditional controllable flow check valve, the controllable flow check valve sets up adjusting mechanism, is fixedly connected with a flow limiting sleeve on the lower surface of valve flap, and is set up with a plurality of adjusting holes on flow limiting sleeve, when flow medium flows into from inlet end, valve flap and its lower surface flow limiting sleeve are lifted by pressure, and flow into outlet end from the adjusting hole on flow limiting sleeve, the different distances of flow limiting sleeve that are lifted by the pressure of flow are controlled automatically, when medium attempts to backflow, valve flap is reset by the weight of valve flap and medium, and medium is blocked, to prevent medium backflow, and first sealing ring is arranged on the upper surface of valve rod, protects spring from the corrosion of medium, improves the service life of the check valve, and second sealing ring is arranged around the lower surface of valve flap, and the sealing between valve flap and water flow hole is sealed by sealing ring when medium backflows, to effectively prevent medium backflow.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A novel controllable flow check valve, including valve body and valve rod, the upper surface of valve body is fixedly connected with valve cover, the periphery of the upper surface of valve rod is fixedly connected with first sealing ring, the lower surface of valve rod is fixedly connected with valve flap, the periphery of the lower surface of valve flap is fixedly connected with second sealing ring, the middle part of the lower surface of valve flap is provided with adjusting mechanism, the adjusting mechanism includes flow limiting sleeve, the barrel of flow limiting sleeve is provided with a plurality of adjusting holes.

[0008] Through the technical scheme, the controllable flow check valve is provided with the adjusting mechanism, the flow is lifted up the valve disc and the adjusting mechanism after flowing in, the flow is discharged from the adjusting hole part of the flow hole upper section in the flow limiting sleeve, and the flow is autonomously adjusted through the pressure of the flow.

[0009] Further, the lower surface of the valve cover is fixedly connected with a guide sleeve, and the valve rod is arranged in the inner wall of the guide sleeve.

[0010] Through the technical scheme, the guide sleeve is arranged to guide the up-down movement of the valve rod, so that the stability and reliability of the check valve are ensured.

[0011] Further, the valve rod is slidably connected with the guide sleeve.

[0012] Through the technical scheme, the valve rod moves up and down in the guide sleeve according to the pressure of the flow medium, and the guide sleeve provides positioning and guiding for the valve rod.

[0013] Further, the lower end of the inner wall of the valve body is fixedly connected with a valve seat.

[0014] Through the technical scheme, the valve seat is arranged to provide support for the sealing surface of the valve disc, so that the valve disc can effectively prevent fluid backflow in the closed state.

[0015] Further, a flow hole is arranged at the center of the valve seat.

[0016] Through the technical scheme, the flow hole is arranged to guide the smooth flow of water and prevent medium deposition.

[0017] Further, the outer walls of the two sides of the valve body are fixedly connected with mounting flanges.

[0018] Through the technical scheme, the mounting flanges are arranged to facilitate the installation and disassembly of the check valve, and the check valve can be more firmly fixed in the pipeline system to effectively resist fluid pressure.

[0019] Further, the upper surface of the valve rod is fixedly connected with a spring at the middle part.

[0020] Through the technical scheme, the spring is arranged to help the valve disc better resist the pressure of the medium, so as to maintain the stability and safety of the entire fluid system.

[0021] Further, the flow limiting sleeve is fixedly connected to the middle part of the lower surface of the valve disc.

[0022] Through the technical scheme, the flow is autonomously adjusted through the adjusting hole in the flow limiting sleeve.

[0023] The utility model has the following beneficial effects:

[0024] The utility model provides a novel controllable flow check valve, compares majority controllable flow check valve of current, this controllable flow check valve sets up adjusting mechanism, fixedly connects a flow restriction sleeve on the lower surface of the valve clack, and sets up a plurality of adjusting holes on the flow restriction sleeve, when the flow medium flows from the import end, the valve clack and the flow restriction sleeve on its lower surface are lifted by pressure, and flow into the export end from the adjusting hole on the flow restriction sleeve, the different distance of the flow restriction sleeve is lifted by the pressure of flow to control the flow automatically, when the medium attempts to flow back, the valve clack resets by the weight of the valve clack and the weight of the medium, and the medium is blocked, thereby preventing the medium from flowing back.

[0025] The utility model provides a novel controllable flow check valve, compares majority controllable flow check valve of current, this controllable flow check valve sets up the first sealing ring on the valve rod upper surface, protects the spring from the corrosion of medium, improves the service life of this check valve, and sets up the second sealing ring on the periphery of the lower surface of the valve clack, when the medium flows back, the valve clack and the water flow hole are sealed between the sealing ring, thereby effectively preventing the medium from flowing back. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure schematic diagram of a novel controllable flow check valve proposed by the utility model;

[0027] Figure 2 It is a sectional view of a novel controllable flow check valve proposed by the utility model;

[0028] Figure 3 It is a sectional view of the guide sleeve in a novel controllable flow check valve proposed by the utility model;

[0029] Figure 4 It is a structure schematic diagram of the adjusting mechanism in a novel controllable flow check valve proposed by the utility model;

[0030] Figure 5 It is a structure schematic diagram of the flow restriction sleeve in a novel controllable flow check valve proposed by the utility model.

[0031] LEGEND:

[0032] Valve body;2, valve clack;3, valve seat;4, valve cover;5, guide sleeve;6, valve rod;7, first sealing ring;8, spring;9, water flow hole;10, second sealing ring;

[0033] Adjusting mechanism;1101, flow restriction sleeve;1102, adjusting hole;

[0034] Mounting flange. DETAILED DESCRIPTION

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] One embodiment provided by this utility model:

[0037] Reference Figure 1 , Figure 2 and Figure 4 A novel controllable flow check valve includes a valve body 1 and a valve stem 6. A valve cover 4 is fixedly connected to the upper surface of the valve body 1. A first sealing ring 7 is fixedly connected to the four sides of the upper surface of the valve stem 6. A valve disc 2 is fixedly connected to the lower surface of the valve stem 6. A second sealing ring 10 is fixedly connected to the four sides of the lower surface of the valve disc 2. An adjustment mechanism 11 is provided in the middle of the lower surface of the valve disc 2. The adjustment mechanism 11 includes a flow-limiting sleeve 1101. The body of the flow-limiting sleeve 1101 has multiple adjustment holes 1102.

[0038] The controllable flow check valve is equipped with an adjustment mechanism 11. After the flow flows in, it lifts the valve disc 2 and the adjustment mechanism 11, so that the flow flows out from the adjustment hole 1102 located in the upper section of the water flow hole 9 in the flow limiting sleeve 1101, thereby autonomously adjusting the flow rate by the pressure of the flow.

[0039] Reference Figure 3 , Figure 4 and Figure 5 A guide sleeve 5 is fixedly connected to the lower surface of the valve cover 4. The valve stem 6 is disposed on the inner wall of the guide sleeve 5. The guide sleeve 5 facilitates the vertical movement of the valve stem 6, ensuring the stability and reliability of the check valve operation. The valve stem 6 is slidably connected to the guide sleeve 5. The valve stem 6 moves up and down within the guide sleeve 5 according to the pressure transmitted by the flow medium. The guide sleeve 5 provides positioning and guidance for the valve stem 6. A valve seat 3 is fixedly connected to the lower end of the inner wall of the valve body 1. The valve seat 3 provides support for the sealing surface of the valve disc 2, ensuring that the valve disc 2 can effectively prevent fluid backflow when closed. A water flow hole 9 is provided at the center of the valve seat 3. The flow hole 9 facilitates the smooth flow of water and prevents media sedimentation. Mounting flanges 12 are fixedly connected to both outer walls of the valve body 1, facilitating the installation and disassembly of the check valve and ensuring its secure fixation within the pipeline system to effectively handle fluid pressure. A spring 8 is fixedly connected to the middle of the upper surface of the valve stem 6, helping the valve disc 2 better cope with media pressure and maintaining the stability and safety of the entire fluid system. A flow-limiting sleeve 1101 is fixedly connected to the middle of the lower surface of the valve disc 2, allowing for autonomous flow adjustment via the adjusting hole 1102 on the sleeve.

[0040] Working principle: This check valve uses a first sealing ring 7 on the valve stem 6 to protect the spring 8 when the valve stem 6 moves up and down inside the guide sleeve 5, preventing the medium from entering the guide sleeve 5 and corroding the spring 8. A second sealing ring 10 is set on the lower surface of the valve disc 2. When the medium flows back, the second sealing ring 10 seals the water outlet 9 and the valve disc 2, thus effectively preventing the medium from flowing back. When the medium flows in from the inlet end, it puts pressure on the valve disc 2 and the regulating mechanism 11, thereby driving the valve disc 2 and the regulating mechanism 11 to move upward. The medium flows out from the regulating hole 1102 above the water outlet 9 in the flow limiting sleeve 1101, thus automatically controlling the flow rate by the different pressures transmitted by the medium.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel controllable flow check valve, comprising a valve body (1) and a valve stem (6), characterized in that: A valve cover (4) is fixedly connected to the upper surface of the valve body (1), a first sealing ring (7) is fixedly connected to the four sides of the upper surface of the valve stem (6), a valve disc (2) is fixedly connected to the lower surface of the valve stem (6), a second sealing ring (10) is fixedly connected to the four sides of the lower surface of the valve disc (2), and an adjustment mechanism (11) is provided in the middle of the lower surface of the valve disc (2). The adjustment mechanism (11) includes a flow-limiting sleeve (1101), and the body of the flow-limiting sleeve (1101) is provided with multiple adjustment holes (1102).

2. The novel controllable flow check valve according to claim 1, characterized in that: The lower surface of the valve cover (4) is fixedly connected to a guide sleeve (5), and the valve stem (6) is disposed on the inner wall of the guide sleeve (5).

3. A novel controllable flow check valve according to claim 2, characterized in that: The valve stem (6) is slidably connected to the guide sleeve (5).

4. A novel controllable flow check valve according to claim 1, characterized in that: A valve seat (3) is fixedly connected to the lower end of the inner wall of the valve body (1).

5. A novel controllable flow check valve according to claim 4, characterized in that: A water flow hole (9) is provided at the center of the valve seat (3).

6. A novel controllable flow check valve according to claim 1, characterized in that: The valve body (1) has mounting flanges (12) fixedly connected to both outer walls.

7. A novel controllable flow check valve according to claim 1, characterized in that: A spring (8) is fixedly connected to the middle of the upper surface of the valve stem (6).

8. A novel controllable flow check valve according to claim 1, characterized in that: The flow-limiting sleeve (1101) is fixedly connected to the middle of the lower surface of the valve disc (2).

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