Check valve with brake structure

Abstract

The utility model relates to the technical field of stop valves, in particular to a stop valve with a brake structure, which comprises a stop valve and is used for preventing fluid from flowing, and the stop valve comprises a main body assembly, a brake structure, a brake structure, a brake structure and a brake structure, and is characterized in that the main body assembly comprises an inlet fixedly communicated with the right end of a valve body and an outlet fixedly communicated with the lower end of the valve body; the braking assembly comprises a shaft block arranged in the center of the interior of the inlet and a plurality of blade plates rotationally installed at the outer end of the shaft block, the outer ends of the blade plates and the shaft block are rotationally installed in a penetrating mode, limiting frames are fixed to the outer ends of the blade plates, the inlet is sleeved with an annular frame, and a plurality of limiting rods are fixed to the outer wall of the annular frame and located in the limiting frames; a driving piece is arranged on the inlet and used for controlling the ring frame to rotate; the brake assembly further comprises a plurality of shaft seats fixed to the outer wall of the inlet, and guide wheels are rotationally installed in the shaft seats. The reliability and the safety of the check valve are improved, it is ensured that fluid flowing can be rapidly cut off under the emergency situation, and accident expansion is avoided.

Description

Technical Field

[0001] This utility model relates to the field of flow stop valve technology, specifically a flow stop valve with a braking structure. Background Technology

[0002] A check valve is a type of valve used to control the flow of fluid. Its main function is to stop the flow of fluid or regulate the flow rate. Check valves are usually installed in piping systems to open, close, or regulate the flow direction or flow rate of fluid.

[0003] A search of publication number CN219975416U reveals a powder check valve for vacuum applications. This technology discloses "a powder check valve for vacuum applications, belonging to the technical field of powder check valves; including an upper pull-out valve and a lower slide-out valve, connected by a fixed column; openings are provided on the top and bottom plates of both the pull-out and slide-out valve housings; the opening on the bottom plate of the pull-out valve and the opening on the top plate of the slide-out valve are connected by a through hole inside the fixed column; the pull-out valve has a sliding connection..." The system features two symmetrical sliding plates that close the valve when they contact each other; a second cylinder is fixedly mounted on one side of the valve housing, with its piston rod extending into the housing and fixedly connected to the sliding plate, which is slidably connected to the valve housing; a bellows is installed at the lower end of the valve housing, and a tapered tube (thinner at the top and thicker at the bottom) is installed inside the bellows, with the lower end of the tapered tube fixedly connected to the lower end of the bellows. These technical solutions address the issue of poor sealing performance in current powder check valves.

[0004] During the operation of a pipeline system, unexpected situations may occur (such as pipe rupture, equipment failure, or sudden pressure surge), requiring immediate shut-off of fluid flow to prevent the accident from escalating. However, existing check valves have a slow closing speed, rely on manual operation or electric drive, and cannot achieve rapid shut-off in a short time, leading to continuous fluid leakage or further equipment damage. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a stop valve with a braking structure, which improves the reliability and safety of the stop valve, and ensures that the fluid flow can be quickly cut off in an emergency to prevent the accident from escalating.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stop valve with a braking structure, comprising a stop valve for preventing fluid flow, wherein the stop valve comprises:

[0007] The main components include an inlet fixed at the right end of the valve body and an outlet fixed at the lower end of the valve body;

[0008] The braking assembly includes a shaft block located in the center of the inlet, several blades rotatably mounted on the outer end of the shaft block, with the outer ends of the blades rotatably mounted through the shaft block, a limit frame fixed to the outer end of the blades, a ring frame sleeved on the outside of the inlet, several limit rods fixed to the outer wall of the ring frame, and the limit rods located inside the limit frame, and a driving component provided on the inlet for controlling the rotation of the ring frame.

[0009] Preferably, the braking assembly further includes several bearings fixed to the outer wall of the inlet, with guide wheels rotatably mounted inside the bearings.

[0010] Preferably, the braking assembly further includes brackets fixed at both ends of the axle block, and the ends of the brackets are fixed to the inner wall of the inlet.

[0011] Preferably, the driving component includes a first connecting ear fixed to the outer wall of the ring frame, a second connecting ear fixed to the outer wall of the inlet, an electric push rod pivotally connected to the second connecting ear, and the output end of the electric push rod pivotally connected to the first connecting ear.

[0012] Preferably, the main component further includes a valve seat fixed to the top of the valve body, a guide seat fixed to the upper end of the valve seat, a valve stem slidably installed inside the valve seat and threadedly connected to the guide seat, a valve disc fixed to the lower end of the valve stem, and a handwheel fixed to the upper end of the valve disc.

[0013] Preferably, the main component further includes a sealing ring fixed inside the lower end of the valve body.

[0014] Beneficial effects

[0015] This invention provides a stop valve with a braking structure. Compared with the prior art, it has the following advantages:

[0016] 1. When it is necessary to immediately cut off the fluid flow and the main component fails, the drive component drives the ring frame to rotate. The ring frame, in conjunction with the limit rod and the limit frame, drives the blades to rotate, causing several blades to flip simultaneously and close the interior of the inlet. This improves the reliability and safety of the check valve, ensuring that the fluid flow can be quickly cut off in an emergency and preventing the accident from escalating.

[0017] 2. The guide wheel limits and guides the ring frame, and when the ring frame rotates, it drives the guide wheel to rotate, reducing friction and improving the smoothness of the ring frame rotation; the output end of the electric push rod drives the first connecting ear to rotate the ring frame, which improves the convenience of operation and response speed, and ensures that braking operation can be performed quickly in emergency situations. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2This is a cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the braking assembly in this utility model;

[0021] Figure 4 This is a cross-sectional view of the braking component in this utility model.

[0022] In the diagram: 1. Check valve; 11. Main assembly; 111. Valve body; 112. Inlet; 113. Outlet; 114. Valve seat; 115. Guide seat; 116. Valve stem; 117. Valve disc; 118. Handwheel; 119. Sealing ring; 12. Braking assembly; 121. Shaft block; 122. Blade; 123. Limiting bracket; 124. Ring frame; 125. Limiting rod; 126. Driving component; 1261. First connecting ear; 1262. Second connecting ear; 1263. Electric push rod; 127. Shaft seat; 128. Guide wheel; 129. Bracket. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a stop valve with a braking structure, including a stop valve 1 for preventing fluid flow, the stop valve 1 including:

[0025] The main component 11 includes an inlet 112 fixedly connected to the right end of the valve body 111 and an outlet 113 fixedly connected to the lower end of the valve body 111.

[0026] The braking assembly 12 includes a shaft block 121 disposed in the center of the inlet 112, several blades 122 rotatably mounted on the outer end of the shaft block 121, and the outer end of the blades 122 rotatably mounted through the shaft block 121. A limit frame 123 is fixed to the outer end of the blades 122. A ring frame 124 is sleeved on the outside of the inlet 112. Several limit rods 125 are fixed on the outer wall of the ring frame 124, and the limit rods 125 are located inside the limit frame 123. A driving member 126 is provided on the inlet 112 to control the rotation of the ring frame 124.

[0027] In this embodiment, when it is necessary to immediately cut off the fluid flow and the main component 11 malfunctions, the drive component 126 drives the ring frame 124 to rotate. The ring frame 124, through the limit rod 125 and in conjunction with the limit frame 123, drives the blade 122 to rotate, causing several blades 122 to flip simultaneously, closing the interior of the inlet 112. This improves the reliability and safety of the check valve 1, ensuring that the fluid flow can be quickly cut off in an emergency, and preventing the accident from escalating.

[0028] Specifically, the braking assembly 12 also includes several bearing seats 127 fixed to the outer wall of the inlet 112, and guide wheels 128 are rotatably mounted inside the bearing seats 127.

[0029] In this embodiment, the guide wheel 128 limits and guides the ring frame 124, and when the ring frame 124 rotates, it drives the guide wheel 128 to rotate, reducing friction and improving the smoothness of the rotation of the ring frame 124.

[0030] Specifically, the braking assembly 12 also includes brackets 129 fixed at both ends of the shaft block 121, and the ends of the brackets 129 are fixed to the inner wall of the inlet 112.

[0031] In this embodiment, the shaft block 121 is fixed in the center of the inlet 112 by the bracket 129 to prevent shaking when impacted, enhance the stability of the braking assembly 12, ensure that the blade 122 can be accurately flipped, and improve the reliability of braking operation.

[0032] Specifically, the drive unit 126 includes a first connecting ear 1261 fixed to the outer wall of the ring frame 124, a second connecting ear 1262 fixed to the outer wall of the inlet 112, an electric push rod 1263 pivotally connected to the second connecting ear 1262, and the output end of the electric push rod 1263 pivotally connected to the first connecting ear 1261.

[0033] In this embodiment, the output end of the electric push rod 1263 drives the first connecting ear 1261 to rotate the ring frame 124, which improves the convenience of operation and response speed, and ensures that braking operation can be performed quickly in emergency situations.

[0034] Specifically, the main component 11 also includes a valve seat 114 fixed to the top of the valve body 111. A guide seat 115 is fixed to the upper end of the valve seat 114. A valve stem 116 is slidably installed inside the valve seat 114 and threadedly connected to the guide seat 115. A valve disc 117 is fixed to the lower end of the valve stem 116, and a handwheel 118 is fixed to the upper end of the valve disc 117.

[0035] Specifically, the main component 11 also includes a sealing ring 119 fixed inside the lower end of the valve body 111.

[0036] The working principle and usage process of this utility model are as follows: First, when it is necessary to immediately cut off the fluid flow and the main component 11 malfunctions, the output end of the electric push rod 1263 drives the first connecting ear 1261 to rotate the ring frame 124. At the same time, the guide wheel 128 limits and guides the ring frame 124. When the ring frame 124 rotates, it drives the guide wheel 128 to rotate, reducing friction and improving the smoothness of the rotation of the ring frame 124.

[0037] At the same time, the ring frame 124, through the limiting rod 125 and in conjunction with the limiting frame 123, drives the blade 122 to rotate, causing several blades 122 to flip simultaneously, closing the interior of the inlet 112; this improves the reliability and safety of the stop valve 1, ensuring that fluid flow can be quickly cut off in an emergency, preventing the accident from escalating.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stop valve with a braking structure, characterized in that: Includes a check valve (1) and is used to prevent fluid flow. The check valve (1) includes: The main component (11) includes an inlet (112) fixedly connected to the right end of the valve body (111) and an outlet (113) fixedly connected to the lower end of the valve body (111). The braking assembly (12) includes a shaft block (121) disposed in the center of the inlet (112), several blades (122) rotatably mounted on the outer end of the shaft block (121), and the outer end of the blades (122) rotatably mounted through the shaft block (121). A limit frame (123) is fixed to the outer end of the blades (122). A ring frame (124) is sleeved on the outside of the inlet (112). Several limit rods (125) are fixed on the outer wall of the ring frame (124), and the limit rods (125) are located inside the limit frame (123). A driving member (126) is provided on the inlet (112) for controlling the rotation of the ring frame (124).

2. A stop valve with a braking structure according to claim 1, characterized in that: The braking assembly (12) also includes several bearing seats (127) fixed to the outer wall of the inlet (112), and guide wheels (128) are rotatably mounted inside the bearing seats (127).

3. A stop valve with a braking structure according to claim 1, characterized in that: The braking assembly (12) also includes brackets (129) fixed at the front and rear ends of the shaft block (121), and the ends of the brackets (129) are fixed to the inner wall of the inlet (112).

4. A stop valve with a braking structure according to claim 1, characterized in that: The drive unit (126) includes a first connecting ear (1261) fixed to the outer wall of the ring frame (124) and a second connecting ear (1262) fixed to the outer wall of the inlet (112). An electric push rod (1263) is pivotally connected to the second connecting ear (1262), and the output end of the electric push rod (1263) is pivotally connected to the first connecting ear (1261).

5. A stop valve with a braking structure according to claim 1, characterized in that: The main component (11) also includes a valve seat (114) fixed to the top of the valve body (111). A guide seat (115) is fixed to the upper end of the valve seat (114). A valve stem (116) is slidably installed inside the valve seat (114) and threadedly connected to the guide seat (115). A valve disc (117) is fixed to the lower end of the valve stem (116), and a handwheel (118) is fixed to the upper end of the valve disc (117).

6. A stop valve with a braking structure according to claim 1, characterized in that: The main component (11) also includes a sealing ring (119) fixed inside the lower end of the valve body (111).

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