Flow monitoring type check valve

Abstract

The utility model discloses a flow monitoring type check valve, and relates to the technical field of valves. The valve comprises a valve body, one end of the valve body is fixedly connected with an outlet pipeline, the other end of the valve body is fixedly connected with an inlet pipeline, the inlet pipeline and the outlet pipeline are symmetrically distributed, and the center of the top end of the valve body is rotationally connected with a valve rod body. A sealing box is fixedly connected to the center of the top end of the valve body, and a sliding rod is slidably connected to the center of the inner wall of one side of the sealing box. By opening the sealing cover and under the mutual cooperation of the bristle body, the jacking auxiliary wheel, the spring, the convex block and the mounting plate, lubricating oil can be uniformly smeared at the joint of the valve rod body and the valve body, so that the problem that the lubricating oil cannot be uniformly smeared at the joint of the valve rod body and the valve body when the rotating part of the valve rod and the valve body is maintained each time is solved; and a tool is needed to inject lubricating oil into the rotating part of the valve rod and the valve body.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely is a flow monitoring type check valve. BACKGROUND

[0002] In the production process of petroleum, chemical industry, metallurgy and other industries, various fluids (such as crude oil, chemical raw materials, water, steam, etc.) need to be transported from one device to another device, in order to ensure that the fluid flows in the predetermined direction, prevent backflow and cause equipment damage or production accidents, check valve is an essential element, at the same time, accurate monitoring of fluid flow is important for controlling production process, ensuring product quality and optimizing energy consumption, and flow monitoring type check valve can provide flow information in real time while realizing check function, help operators understand system operation status in time, so as to carry out corresponding adjustment and control.

[0003] Flow monitoring type check valve may have problems such as wear, rust and scale after long-term use, therefore, the threads at the rotating part of valve stem and valve body usually need to be maintained and lubricated with lubricating oil to ensure the normal work of valve body, however, every time the rotating part of valve stem and valve body is maintained, the lubricating oil injected into the rotating part of valve stem and valve body needs to be manually smeared with tools (bristles), so as to realize the effect of uniform distribution of lubricating oil, which will cause inconvenience and consume a lot of time, and the flow monitoring type check valve is provided to solve the above problems. UTILITY MODEL CONTENTS

[0004] In order to solve the problem that lubricating oil needs to be injected into the rotating part of valve stem and valve body every time the rotating part of valve stem and valve body is maintained, the utility model aims to provide a flow monitoring type check valve.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: a flow monitoring type check valve, comprising a valve body, one end of the valve body is fixedly connected with an outlet pipeline, the other end of the valve body is fixedly connected with an inlet pipeline, the inlet pipeline and the outlet pipeline are symmetrically distributed, a valve stem body is rotatably connected to the center of the top end of the valve body, a sealing box is fixedly connected to the center of the top end of the valve body, a sliding rod is slidably connected to the center of the inner wall of one side of the sealing box, brush bodies are fixedly connected to the center of one side end of the sliding rod close to the valve stem body, and the brush bodies are in contact with the outer circle of the valve stem body, a connecting shaft is slidably inserted into the top end of the sealing box close to the valve stem body, and the bottom end of the connecting shaft is fixedly connected with the sliding rod.

[0006] Preferably, a filter screen is fixedly connected to the inner wall of the inlet pipeline away from the valve body, a flow monitoring table is fixedly connected to the outer circle of the valve body, and a disc is fixedly connected to the top end of the valve stem body.

[0007] Preferably, the front and rear ends of the sealed box are detachably provided with a sealing cover, the center of the top end of the disc is fixedly connected with a rotating handle, the top end of the mounting plate is fixedly connected with a lug, and the center of the top end of the mounting plate is fixedly connected with a lug.

[0008] Preferably, the inside of the disc is threadedly connected with a screw rod near the outer ring, the bottom end of the screw rod is fixedly connected with a jacking auxiliary wheel, the outer ring of the connecting shaft is fixedly connected with a mounting disc near the bottom, the mounting disc is located in the sealed box, and the top end of the screw rod is fixedly connected with a rotating disc.

[0009] Preferably, the top end of the mounting disc is fixedly connected with a spring, and the other end of the spring is fixedly connected with the inner wall of the sealed box, and the spring is sleeved on the outer ring of the connecting shaft.

[0010] Compared with the prior art, the beneficial effects of the utility model lie in:

[0011] 1. The filter screen is arranged in the utility model, so that impurities in the medium can be filtered, and the check valve is prevented from being affected.

[0012] 2. In the utility model, the sealing cover is opened, and the lubricating oil can be evenly applied to the connection between the valve rod body and the valve body body under the cooperation of the bristle body, the jacking auxiliary wheel, the spring, the lug and the mounting plate, thereby solving the problem that every time the valve rod and the valve body rotating part are maintained, the lubricating oil needs to be injected into the valve rod and the valve body rotating part by using a tool. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Figure 1 It is a schematic view of the overall structure of the utility model.

[0015] Figure 2 It is a schematic view of the sectional structure of the sealed box of the utility model.

[0016] Figure 3 It is a schematic view of the overall structure of the utility model. Figure 1 It is a schematic view of the enlarged structure of A in the utility model.

[0017] Figure 4 It is a schematic view of the enlarged structure of B in the utility model. Figure 2 It is a schematic view of the enlarged structure of B in the utility model.

[0018] In the diagram: 1. Valve body; 11. Inlet pipe; 12. Outlet pipe; 13. Filter screen; 14. Flow meter; 2. Valve stem body; 21. Disc; 22. Rotary handle; 23. Lead screw; 24. Rotary disc; 25. Lifting auxiliary wheel; 3. Sealing box; 31. Sealing cover; 33. Sliding rod; 34. Brush body; 35. Connecting shaft; 36. Mounting plate; 37. Spring; 38. Mounting plate; 39. Protrusion. Detailed Implementation

[0019] 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.

[0020] Example: Figures 1-4 As shown, this utility model provides a technical solution: a flow monitoring check valve, including a valve body 1, an outlet pipe 12 fixedly connected to one end of the valve body 1, a flange 1 at the other end of the outlet pipe 12, an inlet pipe 11 fixedly connected to the other end of the valve body 1, a flange 2 at the other end of the inlet pipe 11 for connecting to a medium pipe port, and a sealing gasket installed thereon. The sealing gasket is made of rubber material resistant to medium corrosion to ensure the sealing of the connection. The inlet pipe 11 and the outlet pipe 12 are symmetrically distributed. A valve stem body 2 is rotatably connected to the center of the top of the valve body 1. The connection between the valve stem body 2 and the valve body 1 is threaded. A sealing box 3 is fixedly connected, and a sliding rod 33 is slidably connected at the center of the inner wall of one side of the sealing box 3. A straight groove is opened at the center of the inner wall of one side of the sealing box 3. The sliding rod 33 is slidably connected through a slider that cooperates with the straight groove. The slider and the groove are made of polytetrafluoroethylene material with a low coefficient of friction to reduce sliding resistance. A bristle body 34 is symmetrically fixedly connected at the center of the side end of the sliding rod 33 near the valve stem body 2, and the bristle body 34 contacts the outer ring of the valve stem body 2. The bristle body 34 can evenly apply lubricating oil to the valve stem body 2. A connecting shaft 35 is slidably inserted at the top of the sealing box 3 near the valve stem body 2, and the bottom end of the connecting shaft 35 is fixedly connected to the sliding rod 33.

[0021] A filter screen 13 is fixedly connected to the inner wall of the inlet pipe 11 on the side away from the valve body 1.

[0022] By adopting the above technical solution, the filter screen 13 is made of stainless steel wire mesh, and the mesh size is designed according to the particle size of impurities that may be mixed in in the actual use scenario.

[0023] The valve body 1 is fixedly connected with a flow monitoring table 14, and the valve rod body 2 is fixedly connected with a disc 21 at the top end.

[0024] By adopting the technical scheme, the valve body 1 is internally provided with a flow sensor, which is installed at a suitable position according to actual requirements, and the flow monitoring table 14 cooperates with the internally arranged flow sensor to realize real-time monitoring of fluid flow and intuitive display on the display screen.

[0025] The sealing box 3 is symmetrically provided with a sealing cover 31 at the front and rear ends in a detachable manner, and the disc 21 is fixedly connected with a rotating handle 22 at the top end of the center.

[0026] By adopting the technical scheme, the sealing cover 31 is made of stainless steel of the same material as the sealing box 3, and the sealing gasket is made of silicone rubber, thereby ensuring the sealing property of the sealing box 3 and preventing impurities from entering.

[0027] The connecting shaft 35 is fixedly connected with a mounting plate 38 at the top end, and the mounting plate 38 is fixedly connected with a protrusion 39 at the top end of the center.

[0028] By adopting the technical scheme, the protrusion 39 is fixedly connected on the mounting plate 38, which is used in cooperation with the spring 37 and the jacking auxiliary wheel 25 to realize the up-and-down lifting effect of the connecting shaft 35.

[0029] The disc 21 is threadedly connected with a lead screw 23 at the inside and near the outer circle, and the lead screw 23 is fixedly connected with a jacking auxiliary wheel 25 at the bottom end, and the jacking auxiliary wheel 25 is located at the same horizontal plane as the connecting shaft 35.

[0030] By adopting the technical scheme, the lead screw 23 rotates under the action of the rotating disc 24 to drive the jacking auxiliary wheel 25 to move up and down, and the lead screw 23 is only used for fine adjustment of the position of the jacking auxiliary wheel 25, and the outer circle will not affect the normal work of the lead screw 23 after long-term use.

[0031] The connecting shaft 35 is fixedly connected with a mounting disc 36 at the outer circle near the bottom, and the mounting disc 36 is located inside the sealing box 3, and the lead screw 23 is fixedly connected with a rotating disc 24 at the top end.

[0032] By adopting the technical scheme, the mounting disc 36 and the spring 37 are arranged to drive the connecting shaft 35 to reciprocatingly lift up and down.

[0033] The mounting disc 36 is fixedly connected with a spring 37 at the top end, and the other end of the spring 37 is fixedly connected with the inner wall of the sealing box 3, and the spring 37 is sleeved on the outer circle of the connecting shaft 35.

[0034] By adopting the technical scheme, the spring 37 is designed according to the actual use requirements, which can ensure that the connecting shaft 35 can be reliably reset when not subjected to external force, and will not affect the normal movement of the connecting shaft 35 due to excessive spring force.

[0035] Working principle: the device in use, the valve body 1 set up the inlet pipe 11 and the outlet pipe 12 are connected with medium pipeline, set up filter screen 13, can filter the impurity in medium, prevent the influence to check valve, wherein set up flow monitoring table 14 and flow sensor, can real-time monitoring valve body 1 inside fluid flow and through the display screen intuitive display;

[0036] When the maintenance valve stem body 2 and the valve body 1 connecting part is needed, first by opening two sealing caps 31, then pour trace lubricating oil in two bristle body 34 (lubricating oil needs according to actual demand quantitative), then rotate screw rod 23, adjust the position of lifting auxiliary wheel 25 (lifting auxiliary wheel 25 needs with mounting plate 38 contact), when opening or closing check valve, need rotate rotating handle 22, so that fixedly connected disc 21 drive lifting auxiliary wheel 25 annular rotation, then under the action of lug 39 and mounting plate 38 and spring 37, can make the connecting shaft 35 drive sliding rod 33 and two bristle body 34 reciprocating lift, thus can evenly smear lubricating oil in valve stem body 2 and the valve body 1 connecting part.

[0037] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A flow monitoring check valve comprising a valve body (1), characterized in that: One end of the valve body (1) is fixedly connected with an outlet pipeline (12), the other end of the valve body (1) is fixedly connected with an inlet pipeline (11), and the inlet pipeline (11) and the outlet pipeline (12) are symmetrically distributed, the top center of the valve body (1) is rotatably connected with a valve stem body (2), and the top center of the valve body (1) is fixedly connected with a sealing box (3); The center of one side of the inner wall of the sealing box (3) is slidably connected with a sliding rod (33), the center of one side end of the sliding rod (33) close to the valve stem body (2) is fixedly connected with a brush body (34) in a symmetrical manner, and the brush body (34) is in contact with the outer ring of the valve stem body (2), the top of the sealing box (3) close to the valve stem body (2) is slidably inserted with a connecting shaft (35), and the bottom end of the connecting shaft (35) is fixedly connected with the sliding rod (33).

2. A flow monitoring check valve as defined in claim 1, wherein The inner wall of the inlet pipeline (11) and the side away from the valve body (1) are fixedly connected with a filter screen (13).

3. A flow monitoring check valve as defined in claim 1, wherein The outer ring of the valve body (1) is fixedly connected with a flow monitoring table (14), and the top of the valve stem body (2) is fixedly connected with a disc (21).

4. A flow monitoring check valve as defined in claim 3, wherein, The front and rear ends of the sealing box (3) are symmetrically and detachably provided with a sealing cover (31), and the top center of the disc (21) is fixedly connected with a rotating handle (22).

5. A flow monitoring check valve as defined in claim 1, wherein, The top end of the connecting shaft (35) is fixedly connected with a mounting plate (38), and the center of the top of the mounting plate (38) is fixedly connected with a protruding block (39).

6. A flow monitoring check valve as defined in claim 3 wherein, The inside of the disc (21) and close to the outer ring are threadedly rotatably connected with a lead screw (23), and the bottom end of the lead screw (23) is fixedly connected with a jacking auxiliary wheel (25), and the jacking auxiliary wheel (25) is in the same horizontal plane as the connecting shaft (35).

7. A flow monitoring check valve as defined in claim 6 wherein, The outer ring of the connecting shaft (35) close to the bottom is fixedly connected with a mounting disc (36), and the mounting disc (36) is located in the inside of the sealing box (3), and the top end of the lead screw (23) is fixedly connected with a rotating disc (24).

8. A flow monitoring check valve as defined in claim 7, wherein, The top of the mounting disc (36) is fixedly connected with a spring (37), and the other end of the spring (37) is fixedly connected with the inner wall of the sealing box (3), and the spring (37) is sleeved on the outer ring of the connecting shaft (35).

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