Stop valve capable of automatically adjusting flow proportion

Abstract

The invention provides a flow proportion automatic adjusting stop valve which comprises a valve body, conveying pipes, an adjusting device and a fixing device, the two conveying pipes are fixedly installed at the two ends of the valve body respectively, and the adjusting device comprises an adjusting groove, a sealing plate, a connecting rod, a moving rod, a moving plate and a reset spring. The fixing device comprises a fixing hole, a fixing pin, a fixing cover, two moving grooves, two moving blocks and a limiting ring, the fixing hole is formed in the moving plate, the fixing pin is in threaded connection with the interior of the fixing hole, the fixing cover is in threaded connection with the interior of the conveying pipe, and the two moving grooves are formed in the moving rod. The moving rod and the moving plate are limited through the fixing device, and meanwhile, one end of the conveying pipe is sealed through the fixing cover, so that the reset spring can be conveniently disassembled and assembled in the later period, and the reset spring can be conveniently replaced in the later period.

Description

Technical Field

[0001] The present invention relates to the technical field of globe valves, and particularly to a globe valve with automatic flow ratio adjustment. Background Art

[0002] A globe valve, also known as a stop valve, belongs to a forced-sealing valve. Therefore, when the valve is closed, pressure must be applied to the valve flap to force the sealing surface not to leak. The opening and closing member of the globe valve is a plug-shaped valve flap, and the sealing surface is flat or conical. The valve flap moves linearly along the center line of the valve seat. The movement form of the valve stem can also be a lifting and rotating rod type, which can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals, and radioactive media.

[0003] The prior art proposed a publication number of CN119244781A. By using an adaptive flow ratio mechanism, when the liquid pressure output from the valve body to the liquid outlet pipe is too high, the high-pressure oil in the liquid outlet pipe forms pressure on the first disc block, causing the first disc block to compress the first spring, and the first disc block drives the connecting transmission rod. The connecting transmission rod drives the blocking square disc to move leftward, blocking the left side of the valve body, thereby reducing the liquid entering the valve body, avoiding excessive flow, and playing the role of adaptive flow control. By reducing the flow, it can effectively prevent the unstable situation caused by excessive pressure in the system, avoid the pressure fluctuation caused by excessive flow, and this adjustment mechanism can reduce the impact on the valve body and the entire pipeline system due to excessive flow or pressure, avoid water hammer effect or other potential damages, and ensure the safe operation of the system.

[0004] However, after a long time of the first spring, it will cause material fatigue or plastic deformation, resulting in the first spring being unable to push the first disc block to fully reset, and the blocking square disc cannot be reset, affecting the conveying of materials.

[0005] Therefore, it is necessary to provide a globe valve with automatic flow ratio adjustment to solve the above technical problems. Summary of the Invention

[0006] The present invention provides a globe valve with automatic flow ratio adjustment, which solves the problem that after a long time of the first spring, its performance deteriorates, the first spring is unable to push the first disc block to fully reset, the blocking square disc cannot be reset, and it affects the conveying of materials.

[0007] To solve the above technical problems, a globe valve with automatic flow ratio adjustment provided by the present invention includes: a valve body, a conveying pipe, an adjusting device, and a fixing device; The two conveying pipes are respectively fixedly installed at both ends of the valve body; The adjusting device includes an adjusting groove, a sealing plate, a connecting rod, a moving rod, a moving plate, and a return spring; The fixing device includes a fixing hole, a fixing pin, a fixing cover, two moving grooves, two moving blocks and a limiting ring. The fixing hole is opened inside the moving plate. The fixing pin is threadedly connected to the inside of the fixing hole. The fixing cover is threadedly connected to the inside of the conveying pipe. The two moving grooves are both opened inside the moving rod. The two moving blocks are respectively slidably connected to the inside of the two moving grooves. The surface of the limiting ring is fixedly connected to the surface of the inner wall of the conveying pipe.

[0008] Preferably, the adjusting groove is opened inside the valve body. The sealing plate is slidably connected to the inside of the adjusting groove. One end of the connecting rod is connected to one end of the sealing plate. One end of the moving rod is rotatably connected to one side of the connecting rod. The moving plate is arranged at one end of the moving rod. The return spring is sleeved on the surface of the moving rod.

[0009] Preferably, one end of the fixing pin is fixedly connected to one end of the moving rod.

[0010] Preferably, a rotating ring is arranged on one side of the fixing cover. An annular groove is opened inside the rotating ring.

[0011] Preferably, a limiting sleeve is fixedly connected to the surface of the moving rod.

[0012] Preferably, a rotating sleeve is threadedly connected to the surface of the moving rod. One side of the rotating sleeve is rotatably connected to a rotating ring.

[0013] Preferably, a sliding assembly is arranged inside the fixing cover. The sliding assembly includes a plurality of sliding holes and a plurality of sliding rods. The plurality of sliding holes are all opened inside the fixing cover. The plurality of sliding rods are respectively slidably connected to the inside of the plurality of sliding holes.

[0014] Compared with the related art, the present invention has the following beneficial effects: The present invention provides a globe valve with automatic flow ratio adjustment. The fixing device limits the position between the moving rod and the moving plate. At the same time, the fixing cover seals one end of the conveying pipe, which is convenient for the later disassembly and installation of the return spring, and thus convenient for the later replacement of the return spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the first embodiment of a globe valve with automatic flow ratio adjustment provided by the present invention; Figure 2 is Figure 1 a schematic cross-sectional structural diagram of the shown conveying pipe; Figure 3 is Figure 2 an enlarged schematic view of part A shown; Figure 4 Schematic structural diagram of the second embodiment of a globe valve with automatic adjustment of flow ratio provided by the present invention; Figure 5 For Figure 4 Enlarged schematic view of part B shown in the figure.

[0016] Reference numerals in the figure: 1, valve body; 2, delivery pipe; 3, adjusting device, 31, adjusting groove, 32, sealing plate, 33, connecting rod, 34, moving rod, 35, moving plate, 36, return spring; 4, fixing device, 41, fixing hole, 42, fixing pin, 43, fixing cover, 44, moving groove, 45, moving block, 46, limiting ring; 5, rotating ring; 6, limiting sleeve; 7, sliding assembly, 71, sliding hole, 72, sliding rod; 8, rotating sleeve; 9, rotating ring. Detailed implementation manners

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] First embodiment: Please refer to Figure 1 、 Figure 2 And Figure 3 , wherein Figure 1 Schematic structural diagram of the first embodiment of a globe valve with automatic adjustment of flow ratio provided by the present invention; Figure 2 For Figure 1 Schematic cross-sectional structural diagram of the delivery pipe shown in the figure; Figure 3 For Figure 2 Enlarged schematic view of part A shown in the figure. A globe valve with automatic adjustment of flow ratio includes: valve body 1, delivery pipe 2, adjusting device 3 and fixing device 4; The two delivery pipes 2 are respectively fixedly installed at both ends of the valve body 1; The adjusting device 3 includes an adjusting groove 31, a sealing plate 32, a connecting rod 33, a moving rod 34, a moving plate 35 and a return spring 36; The fixing device 4 includes a fixing hole 41, a fixing pin 42, a fixing cover 43, two moving grooves 44, two moving blocks 45 and a limiting ring 46. The fixing hole 41 is opened inside the moving plate 35, the fixing pin 42 is threadedly connected to the inside of the fixing hole 41, the fixing cover 43 is threadedly connected to the inside of the delivery pipe 2, the two moving grooves 44 are both opened inside the moving rod 34, the two moving blocks 45 are respectively slidably connected to the inside of the two moving grooves 44, and the surface of the limiting ring 46 is fixedly connected to the inner wall surface of the delivery pipe 2.

[0019] The surface of the fixing cover 43 is provided with threads, and the inside of the delivery pipe 2 is provided with threads adapted to the fixing cover 43 The surfaces of the two moving blocks 45 are fixedly connected to the surface of the inner wall of the fixed cover 43, and are used to drive the moving rod 34 to move to one side when the fixed cover 43 rotates to one side.

[0020] One side of the limiting ring 46 is fixedly connected with a plurality of clamping blocks, and a plurality of clamping grooves adapted to the clamping blocks are provided inside the moving plate 35. After the moving plate 35 is reset and the plurality of clamping blocks enter the inside of the clamping grooves, when the moving rod 34 drives the fixed pin 42 to rotate to one side, the moving plate 35 rotates to one side along with the moving rod 34.

[0021] The adjusting groove 31 is provided inside the valve body 1, the sealing plate 32 is slidably connected inside the adjusting groove 31, one end of the connecting rod 33 is connected to one end of the sealing plate 32, one end of the moving rod 34 is rotatably connected to one side of the connecting rod 33, the moving plate 35 is arranged at one end of the moving rod 34, and the return spring 36 is sleeved on the surface of the moving rod 34.

[0022] When the output end of the valve body 1 has too much pressure when conveying materials into the inside of the conveying pipe 2, the materials generate pressure on the moving plate 35, and while pushing the moving plate 35 connected to the moving rod 34 to move to one side, the return spring 36 is compressed. When the moving rod 34 moves to one side, it drives the two moving grooves 44 to move to one side on the surfaces of the two moving blocks 45 respectively, and at the same time drives the connecting rod 33 connected to the sealing plate 32 to move to one side inside the adjusting groove 31, thereby changing the space inside the comfort pipe input by the valve body 1, so as to avoid excessive flow, play a role in adaptive flow control. By reducing the flow, it can effectively prevent the unstable situation caused by excessive pressure in the system, avoid the pressure fluctuation caused by excessive flow, reduce the impact on the valve body and the entire pipeline system due to too high flow or pressure, avoid the water hammer effect or other potential damages, and ensure the safe operation of the system.

[0023] A sealing ring is fixedly connected to the surface of the moving plate 35, and is used to increase the sealing effect of the moving plate 35.

[0024] One end of the fixed pin 42 is fixedly connected to one end of the moving rod 34.

[0025] The fixed pin 42 is a threaded rod, and the fixed hole 41 is a threaded hole adapted to the fixed pin 42, and is used to drive the fixed pin 42 to rotate to one side when the fixed moving rod 34 rotates to one side, and move and separate or install to one side inside the fixed hole 41, so as to facilitate the fixation between the moving rod 34 and the moving plate 35.

[0026] A rotating ring 5 is provided on one side of the fixed cover 43, and an annular groove is provided inside the rotating ring 5.

[0027] The rotating ring 5 is used to reduce the frictional force with the return spring 36 when the fixed cover 34 rotates to one side.

[0028] The working principle of this first embodiment is as follows: When in use, when the return spring 36 needs to be replaced, by rotating the fixed cover 43 to one side, the fixed cover 43 is moved and separated to one side inside the conveying pipe 2.

[0029] At the same time, when the fixed cover 43 rotates to one side, it drives the two moving blocks 45 connected to the moving rod 34 to rotate to one side. When the moving rod 34 rotates to one side, it drives the fixed pin 42 to rotate and move to one side inside the fixing hole 41. After separation, the moving rod 34 can be taken out from the inside of the conveying pipe 2, and then the return spring 36 can be taken out.

[0030] When installing the return spring 36, after inserting the return spring 36 into the inside of the conveying pipe 2, after inserting the moving rod 34 into the inside of the conveying pipe 2 and aligning the fixed pin 42 with the fixing hole 41, rotate the fixed cover 43 to one side, thereby driving the moving rod 34 connected to the fixed pin 42 to rotate to one side, causing the fixed pin 42 to move to one side inside the fixing hole 41. At the same time, the fixed cover 43 moves to one side inside the conveying pipe 2. When the fixed pin 42 and the fixed cover 43 both move to appropriate positions, it is okay.

[0031] Second embodiment: Please refer to Figure 4 and Figure 5 , based on a globe valve with automatic flow ratio adjustment provided in the first embodiment of the present application, the second embodiment of the present application proposes another globe valve with automatic flow ratio adjustment. The second embodiment is only a preferred way of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0032] Specifically, the difference of a globe valve with automatic flow ratio adjustment provided in the second embodiment of the present application is that a limiting sleeve 6 is fixedly connected to the surface of the moving rod 34.

[0033] The limiting sleeve 6 is used to limit the movement function of the moving rod 34 after the operator holds the limiting sleeve 6.

[0034] The surface of the moving rod 34 is threadedly connected with a rotating sleeve 8, and one side of the rotating sleeve 8 is rotatably connected with a rotating ring 9.

[0035] The interior of the rotating sleeve 8 is provided with threads, and the surface of the moving rod 34 is provided with threads adapted to the rotating sleeve 8 for moving the rotating sleeve 8 to one side and moving to one side on the surface of the moving rod 34.

[0036] The interior of the fixed cover 43 is provided with a sliding assembly 7. The sliding assembly 7 includes a plurality of sliding holes 71 and a plurality of sliding rods 72. The plurality of sliding holes 71 are all opened in the interior of the fixed cover 43, and the plurality of sliding rods 72 are respectively slidably connected to the interiors of the plurality of sliding holes 71.

[0037] Both ends of the plurality of sliding rods 72 are respectively fixedly connected to one side of the two rotating rings 9, and one side of the two rotating rings 9 is respectively rotatably connected to one side of the rotating sleeve 8 and the rotating ring 5, for when the rotating sleeve 8 rotates, pushing the plurality of sliding rods 72 connected to the plurality of sliding rods 72 to move to one side, thereby pushing the rotating ring 5 to move to one side.

[0038] When this second embodiment is used, after limiting the position of the limiting sleeve 6, the rotating sleeve 8 is rotated to one side, so as to move to one side on the surface of the moving rod 34, enabling the plurality of sliding rods 72 to respectively move inside the plurality of sliding holes 71, pushing the rotating ring 5 to move to one side, and squeezing the return spring 36.

[0039] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A globe valve with automatic flow ratio adjustment, characterized in that, Including: Valve body (1), conveying pipe (2), adjusting device (3) and fixing device (4); The two conveying pipes (2) are respectively fixedly installed at both ends of the valve body (1); The adjusting device (3) includes an adjusting groove (31), a sealing plate (32), a connecting rod (33), a moving rod (34), a moving plate (35) and a return spring (36); The fixing device (4) includes a fixing hole (41), a fixing pin (42), a fixing cover (43), two moving grooves (44), two moving blocks (45) and a limiting ring (46). The fixing hole (41) is opened inside the moving plate (35), the fixing pin (42) is threadedly connected to the inside of the fixing hole (41), the fixing cover (43) is threadedly connected to the inside of the conveying pipe (2), the two moving grooves (44) are both opened inside the moving rod (34), the two moving blocks (45) are respectively slidably connected to the inside of the two moving grooves (44), and the surface of the limiting ring (46) is fixedly connected to the surface of the inner wall of the conveying pipe (2).

2. The globe valve with automatic flow ratio adjustment according to claim 1, characterized in that, The adjusting groove (31) is opened inside the valve body (1), the sealing plate (32) is slidably connected to the inside of the adjusting groove (31), one end of the connecting rod (33) is connected to one end of the sealing plate (32), one end of the moving rod (34) is rotatably connected to one side of the connecting rod (33), the moving plate (35) is arranged at one end of the moving rod (34), and the return spring (36) is sleeved on the surface of the moving rod (34).

3. The globe valve with automatic flow ratio adjustment according to claim 1, characterized in that, One end of the fixing pin (42) is fixedly connected to one end of the moving rod (34).

4. The stop valve with automatic flow ratio adjustment according to claim 1, characterized in that One side of the fixing cover (43) is provided with a rotating ring (5), and an annular groove is opened inside the rotating ring (5).

5. The stop valve with automatic flow ratio adjustment according to claim 1, characterized in that, A limiting sleeve (6) is fixedly connected to the surface of the moving rod (34).

6. The stop valve with automatic flow ratio adjustment according to claim 5, characterized in that, A rotating sleeve (8) is threadedly connected to the surface of the moving rod (34), and a rotating ring (9) is rotatably connected to one side of the rotating sleeve (8).

7. The globe valve with automatic flow ratio adjustment according to claim 1, characterized in that, A sliding assembly (7) is arranged inside the fixing cover (43). The sliding assembly (7) includes a plurality of sliding holes (71) and a plurality of sliding rods (72). The plurality of sliding holes (71) are all opened inside the fixing cover (43), and the plurality of sliding rods (72) are respectively slidably connected to the inside of the plurality of sliding holes (71).

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