Low-noise control overflow valve

Abstract

The utility model relates to the field of overflow valves, and discloses a low-noise control overflow valve which comprises a valve body, a liquid inlet is formed in the valve body, a liquid outlet is formed in the top end of one side of the valve body, an adjusting assembly is installed in the valve body, a rotating shaft is fixedly connected to the bottom end of the adjusting assembly, and the bottom end of the rotating shaft is rotationally connected with one end of the inner wall of the valve body. A mounting cylinder is fixedly mounted on the inner wall of the valve body, a first movable block and a second movable block are slidably connected into the mounting cylinder, and the ends, close to each other, of the first movable block and the second movable block are fixedly connected with the two ends of a spring correspondingly; the end, away from the first movable block, of the valve rod is fixedly connected with a valve element, the end, away from the first movable block, of the second movable block is rotationally connected with an adjusting screw rod, and the inner wall of the side, away from the liquid inlet, of the valve body is provided with a threaded groove in threaded fit with the outer side of the adjusting screw rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of overflow valve, concretely to a low noise control overflow valve. BACKGROUND

[0002] In the oil supply equipment, the overflow valve is often arranged on the oil return pipeline, and the overflow valve is opened when the oil pressure in the pipeline is too large to make the oil return to the oil source. The traditional overflow valve comprises a valve body, a valve core and a spring, a flow channel is arranged in the valve body, the flow channel is provided with an inlet at the bottom and an outlet at the side, the valve core moves downward under the action of the spring and is in sealing cooperation with the sealing port of the flow channel to cut off the flow channel, and when the oil pressure at the inlet increases, the oil pushes the valve core upward to open the flow channel.

[0003] The existing overflow valve, for example: the Chinese patent with the publication number CN215058543U discloses an overflow valve, which comprises a valve body, a valve core and an elastic member, a flow channel is arranged in the valve body, the flow channel is provided with an inlet at the bottom and an outlet at the side, the valve core moves vertically in the flow channel, the flow channel is provided with a sealing position in sealing cooperation with the valve core, further comprising a piston seat fixed above the valve body, a piston cavity in communication with the flow channel is arranged in the piston seat, the piston cavity is provided with a piston which vertically slides in the piston cavity, the elastic member is arranged at the bottom of the piston and the top of the valve core, the part of the piston cavity above the piston is in communication with the gas source, the top of the piston is provided with an adjusting screw vertically, the lower end of the adjusting screw is fixed with the piston, and the upper end of the adjusting screw extends to the outside of the piston cavity and is provided with a nut which is limited outside the piston cavity.

[0004] The above-mentioned overflow valve lacks a flow control structure, and cannot control the flow of some fluids according to actual needs, resulting in a narrow application range of the overflow valve. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a low noise control overflow valve to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a low noise control overflow valve, comprising a valve body, the valve body is provided with a liquid inlet, and a liquid outlet is arranged at the top of one side of the valve body, an adjusting assembly is installed in the valve body, a rotating shaft is fixedly connected to the bottom end of the adjusting assembly, the bottom end of the rotating shaft is rotatably connected to one end of the inner wall of the valve body, an installation cylinder is fixedly installed on the inner wall of the valve body, a first movable block and a second movable block are respectively slidably connected in the installation cylinder, the ends of the first movable block and the second movable block close to each other are respectively fixedly connected to the two ends of the spring, a valve rod is fixedly connected to the end of the first movable block away from the second movable block, a valve core is fixedly connected to the end of the valve rod away from the first movable block, an adjusting screw is rotatably connected to the end of the second movable block away from the first movable block, and a threaded groove in screw thread cooperation with the outer side of the adjusting screw is formed in the inner wall of the side of the valve body away from the liquid inlet.

[0007] Preferably, a first sealing member is arranged outside the valve rod.

[0008] Preferably, the adjusting assembly comprises a mounting block fixedly mounted on the outer wall of the valve body, and a positioning plate fixedly mounted on the top end of the mounting block, and a rotating rod is rotatably arranged through the center positions of the mounting block and the positioning plate.

[0009] Preferably, the rotating rod is rotatably connected with the side wall of the valve body and extends into the interior of the valve body, and an adjusting plate is fixedly connected to the bottom end of the rotating rod.

[0010] Preferably, the bottom end of the adjusting plate is fixedly connected with the top end of the rotating shaft, and a second sealing member is arranged on the top end of the adjusting plate.

[0011] Preferably, a fixed handle is fixedly connected to one side of the top end of the rotating rod, and the fixed handle is fixedly connected with the top end of the positioning plate through bolts, and a plurality of positioning screw holes are annularly arranged on the top end of the positioning plate and threadedly matched with the bolts.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a rotating fixed handle makes the rotating rod rotate, thereby driving the adjusting plate of the bottom end of the rotating rod to rotate, wherein the outer side of the adjusting plate is attached with the inner wall of the valve body, thereby adjusting the angle of the adjusting plate and the inner wall of the valve body, and then adjusting the liquid flow through the adjusting plate, achieving the flow regulating purpose, and the fixed handle and the positioning plate are fixed through the plurality of positioning screw holes and the bolts matched with them, thereby satisfying the angle adjusting process of multiple angles, and the first movable block and the second movable block fixedly connected at both ends of the spring are slidingly installed on the inner wall of the mounting cylinder, thereby avoiding the shaking of the spring exposed outside in the adjusting process of the valve rod, thereby generating noise, and the second movable block is driven to extrude the spring through the thread cooperation of the adjusting screw rod and the thread groove of the valve body, thereby adjusting the resilience of the spring. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the structural schematic diagram of the utility model;

[0015] Fig. 2 It is the enlarged schematic diagram of the structure of A of the utility model.

[0016] In the drawing: 1, valve body;2, liquid inlet;3, liquid outlet;4, adjusting assembly;5, rotating shaft;6, mounting cylinder;7, first movable block;8, second movable block;9, valve rod;10, valve core;11, adjusting screw rod;12, first sealing member;21, mounting block;22, positioning plate;23, rotating rod;24, adjusting plate;25, fixed handle;26, positioning screw hole;27, second sealing member. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] Embodiment one

[0019] Please refer to Figs. 1-2 , a low-noise control overflow valve in the drawing, including valve body 1, valve body 1 is provided with liquid inlet 2, and the top end of one side of valve body 1 is provided with liquid outlet 3, and the inside of valve body 1 is installed with adjusting assembly 4, and the bottom end of adjusting assembly 4 is fixedly connected with rotating shaft 5, the bottom end of rotating shaft 5 is rotatably connected with one end of the inner wall of valve body 1, and the inner wall of valve body 1 is fixedly installed with mounting cylinder 6, first movable block 7 and second movable block 8 are slidably connected in mounting cylinder 6 respectively, and the end of first movable block 7 and second movable block 8 close to each other is fixedly connected with the both ends of spring respectively, the end of first movable block 7 away from second movable block 8 is fixedly connected with valve rod 9, and the end of valve rod 9 away from first movable block 7 is fixedly connected with valve core 10, the end of second movable block 8 away from first movable block 7 is rotatably connected with adjusting screw 11, and the inner wall of one side of valve body 1 away from liquid inlet 2 is provided with thread groove matched with the outer thread of adjusting screw 11.

[0020] In the embodiment, the outer side of valve rod 9 is provided with first sealing piece 12, adjusting assembly 4 includes mounting block 21 fixedly installed on the outer wall of valve body 1, and the top end of mounting block 21 is fixedly installed with positioning plate 22, rotating rod 23 is rotatably arranged at the center position of mounting block 21 and positioning plate 22, rotating rod 23 is rotatably connected with the side wall of valve body 1 and extends into the inside of valve body 1, and the bottom end of rotating rod 23 is fixedly connected with adjusting plate 24, the bottom end of adjusting plate 24 is fixedly connected with the top end of rotating shaft 5, and the top end of adjusting plate 24 is provided with second sealing piece 27, the side of top end of rotating rod 23 is fixedly connected with fixed handle 25, and fixed handle 25 is fixedly connected with the top end of positioning plate 22 through bolt, and the top end of positioning plate 22 is annularly provided with a plurality of positioning screw holes 26 matched with the thread of bolt.

[0021] Further, by rotating the fixed handle 25, the rotating rod 23 is rotated, thereby driving the adjusting plate 24 at the bottom end of the rotating rod 23 to rotate, wherein the outer side of the adjusting plate 24 is attached to the inner wall of the valve body 1, thereby adjusting the angle between the adjusting plate 24 and the inner wall of the valve body 1, and further adjusting the liquid flow through the adjusting plate 24, achieving the purpose of flow adjustment, and the fixed handle 25 is fixed with the positioning plate 22 through the plurality of positioning screw holes 26 and the matched bolts, thereby meeting the process of adjusting at multiple angles, and the first movable block 7 and the second movable block 8 fixedly connected at both ends of the spring are slidingly installed on the inner wall of the mounting cylinder 6, thereby avoiding the shaking of the spring exposed outside in the adjusting process of the valve rod 9 in the prior art, thereby generating noise, and the spring is extruded by the second movable block 8 through the screw thread cooperation between the adjusting screw rod 11 and the screw groove of the valve body 1, thereby adjusting the spring rebound force.

[0022] The working principle of the utility model is: through rotating the fixed handle 25, the rotating rod 23 is rotated, thereby driving the adjusting plate 24 at the bottom end of the rotating rod 23 to rotate, wherein the outer side of the adjusting plate 24 is attached to the inner wall of the valve body 1, thereby adjusting the angle between the adjusting plate 24 and the inner wall of the valve body 1, and further adjusting the liquid flow through the adjusting plate 24, achieving the purpose of flow adjustment, and the fixed handle 25 is fixed with the positioning plate 22 through the plurality of positioning screw holes 26 and the matched bolts, thereby meeting the process of adjusting at multiple angles, and the first movable block 7 and the second movable block 8 fixedly connected at both ends of the spring are slidingly installed on the inner wall of the mounting cylinder 6, thereby avoiding the shaking of the spring exposed outside in the adjusting process of the valve rod 9 in the prior art, thereby generating noise, and the spring is extruded by the second movable block 8 through the screw thread cooperation between the adjusting screw rod 11 and the screw groove of the valve body 1, thereby adjusting the spring rebound force.

[0023] It should be noted that, in this document, the terms such as first and second are used merely to differentiate one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0024] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A low-noise control overflow valve comprising a valve body (1), characterized in that: the valve body (1) is provided with an inlet (2), and the top end of one side of the valve body (1) is provided with an outlet (3), the valve body (1) is internally provided with an adjusting assembly (4), and the bottom end of the adjusting assembly (4) is fixedly connected with a rotating shaft (5), the bottom end of the rotating shaft (5) is rotatably connected with one end of the inner wall of the valve body (1), and the inner wall of the valve body (1) is fixedly provided with a mounting cylinder (6), the mounting cylinder (6) is slidably connected with a first movable block (7) and a second movable block (8), respectively, and the ends of the first movable block (7) and the second movable block (8) close to each other are fixedly connected with the ends of the springs, respectively, the end of the first movable block (7) away from the second movable block (8) is fixedly connected with a valve rod (9), and the end of the valve rod (9) away from the first movable block (7) is fixedly connected with a valve core (10), the end of the second movable block (8) away from the first movable block (7) is rotatably connected with an adjusting screw (11), and the inner wall of the side of the valve body (1) away from the inlet (2) is provided with a threaded groove matched with the outer thread of the adjusting screw (11); the adjusting assembly (4) comprises a mounting block (21) fixedly installed on the outer wall of the valve body (1), and the top end of the mounting block (21) is fixedly provided with a positioning plate (22), a rotating rod (23) is rotatably arranged at the center positions of the mounting block (21) and the positioning plate (22), the rotating rod (23) is rotatably connected with the side wall of the valve body (1) and extends into the interior of the valve body (1), and the bottom end of the rotating rod (23) is fixedly connected with an adjusting plate (24).

2. A low noise control spill valve according to claim 1 wherein: The outer side of the valve rod (9) is provided with a first sealing element (12).

3. A low noise control spill valve according to claim 1 wherein: The bottom end of the adjusting plate (24) is fixedly connected with the top end of the rotating shaft (5), and the top end of the adjusting plate (24) is provided with a second sealing element (27).

4. A low noise control spill valve according to claim 1 wherein: The top end of the rotating rod (23) is fixedly connected with a fixed handle (25), and the fixed handle (25) is fixedly connected with the top end of the positioning plate (22) through bolts, and the top end of the positioning plate (22) is annularly provided with a plurality of positioning screw holes (26) matched with the threads of the bolts.

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