Flow regulating valve

Abstract

The utility model discloses a flow regulating valve relates to valve body technical field, including valve body, valve seat and valve core, the both ends of valve body are equipped with the opening, the valve seat is connected on the one end opening of valve body, the inside of valve body is equipped with valve core, the one side of valve core is installed squirrel cage, the piston is slidably connected in squirrel cage, the piston is used for controlling the flow of flow regulating valve to slide, install drive assembly for driving piston sliding in the valve body, the one side end face of piston is installed in dredging assembly, the through -hole on squirrel cage can be dredged in the process that piston slides to dredging assembly, the utility model discloses a dredging assembly is designed in the inside of valve body, and the through -hole on squirrel cage is dredged and cleaned to the movement drive dredging assembly of piston, can realize cleaning in the process that adjusts flow, need not periodically dismounting valve body to clean and maintain squirrel cage, greatly improved the maintenance convenience of this flow regulating valve.

Description

Technical Field

[0001] This utility model relates to the field of valve body technology, specifically to a flow regulating valve. Background Technology

[0002] The squirrel-cage flow control valve is an advanced multi-stage pressure-reducing control valve, primarily used for fluid regulation under harsh conditions such as high pressure differentials. Its core design features a cylindrical sleeve resembling a squirrel cage, with numerous regularly distributed through-holes of specific shapes. When fluid flows through, it sequentially passes through these small holes on the multi-stage squirrel-cage sleeve, thus breaking down a large pressure differential into a series of continuous small pressure drops. This multi-stage pressure-reducing principle effectively controls fluid velocity, significantly reduces the probability of cavitation and cavitation, and maintains low operating noise. Therefore, it is particularly suitable for industrial applications requiring high cavitation prevention and low noise, such as water supply systems, high-pressure steam, and oil and gas transportation, and is renowned for its high control accuracy and long service life.

[0003] Because it has a squirrel cage sleeve, the through holes on the squirrel cage sleeve are easily blocked when a medium containing impurities passes through the regulating valve. After long-term use, the pressure regulation accuracy of the regulating valve is prone to decrease, or even complete blockage, requiring regular disassembly, cleaning, and maintenance, which is very inconvenient. Therefore, a flow regulating valve is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a flow regulating valve to solve the problems existing in the prior art mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A flow regulating valve includes a valve body, a valve seat, and a valve core. The valve body has openings at both ends, the valve seat is connected to one end opening of the valve body, and the valve core is disposed inside the valve body. A squirrel cage is installed on one side of the valve core, and a piston is slidably connected inside the squirrel cage. The sliding of the piston is used to control the flow rate of the flow regulating valve. A drive assembly for driving the piston to slide is installed inside the valve body. A clearing component is installed on one end face of the piston, which can clear the through holes on the mouse cage during the piston's sliding motion.

[0006] Preferably, the drive assembly includes a suspension plate, a connecting rod, and a crank. The suspension plate is fixedly connected to the piston, one end of the connecting rod is rotatably connected to the suspension plate via a shaft, and the other end of the connecting rod is rotatably connected to the crank via a shaft. The valve body has a hole that passes through the valve core, and a valve stem is rotatably connected inside the hole. One end of the valve stem located inside the valve core is connected to a crank key.

[0007] Preferably, the unblocking assembly includes a connecting shaft, a turntable, and unblocking rods. Several brackets are installed on one side edge of the piston. The turntable is rotatably connected to the brackets via the connecting shaft. Several unblocking rods are installed on the arc surface of the turntable. The arc spacing between adjacent unblocking rods is equal to the spacing between adjacent through holes on the rat cage.

[0008] Preferably, the side wall of the unblocking rod is provided with several barbs.

[0009] Preferably, the number of the unblocking components is equal to the number of horizontal rows of through holes on the rat cage.

[0010] Preferably, a connecting flange is provided on one side of both the valve body and the valve seat.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention features a dredging component designed inside the valve body. The piston's movement drives the dredging component to unclog and clean the through holes on the rat cage. This cleaning can be achieved during flow regulation, eliminating the need for periodic disassembly of the valve body for cleaning and maintenance of the rat cage, thus greatly improving the maintenance convenience of the flow regulating valve. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the left-side structure of this utility model.

[0014] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure of AA.

[0015] Figure 4 This is a schematic diagram showing the connection between the mouse cage and the piston in this utility model.

[0016] Figure 5 This is a schematic diagram of the unblocking component of this utility model.

[0017] In the diagram: 1. Valve body; 2. Valve seat; 3. Valve core; 4. Squirrel cage; 5. Hanging plate; 6. Connecting rod; 7. Piston; 8. Crank; 9. Valve stem; 10. Unblocking assembly; 101. Connecting shaft; 102. Turntable; 103. Unblocking rod; 104. Barrel. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Please see Figure 1-5 The present invention provides the following technical solution: A flow regulating valve includes a valve body 1, a valve seat 2, and a valve core 3. The valve body 1 has openings at both ends, and the valve seat 2 is connected to one end opening of the valve body 1. The valve core 3 is located inside the valve body 1. Both the valve body 1 and the valve seat 2 have connecting flanges on one side for easy connection to a conveying pipeline.

[0020] A squirrel cage 4 is installed on one side of the valve core 3. Several through holes are arranged horizontally at equal intervals on the side wall of the squirrel cage 4. A piston 7 is slidably connected inside the squirrel cage 4. The sliding of the piston 7 is used to control the flow of the flow regulating valve. When the piston 7 slides, it can control the number of through holes opened on the squirrel cage 4, thereby realizing the flow regulation.

[0021] A drive assembly for driving the piston 7 to slide is installed inside the valve body 1. The drive assembly includes a hanging plate 5, a connecting rod 6, and a crank 8. The hanging plate 5 is fixedly connected inside the piston 7. One end of the connecting rod 6 is rotatably connected to the hanging plate 5 via a shaft, and the other end of the connecting rod 6 is rotatably connected to the crank 8 via a shaft. The valve body 1 has a hole that passes through the valve core 3. A valve stem 9 is rotatably connected inside the hole. One end of the valve stem 9 located inside the valve core 3 is keyed to the crank 8. By rotating the valve stem 9, the valve stem 9 drives the crank 8 to rotate. The crank 8 pulls or pushes the piston 7 to slide in the squirrel cage 4 via the connecting rod 6, thereby realizing the regulation of the flow rate.

[0022] A unclogging component 10 is installed on one end face of the piston 7. The unclogging component 10 can unclog the through hole on the mouse cage 4 during the sliding of the piston 7. The unclogging component 10 includes a connecting shaft 101, a turntable 102 and unclogging rods 103. Several brackets are installed at the edge of one end face of the piston 7. The turntable 102 is rotatably connected to the brackets through the connecting shaft 101. Several unclogging rods 103 are installed on the arc surface of the turntable 102. During the sliding of the piston 7, the piston 7 can drive the unclogging component 10 to move synchronously.

[0023] The arc spacing length of adjacent unblocking rods 103 is equal to the spacing length of adjacent through holes on the rat cage 4. The purpose of this setting is that during the rotation of the turntable 102, the unblocking rods 103 on the turntable 102 can correspond one-to-one with the through holes on the rat cage 4, ensuring that the unblocking rods 103 can smoothly enter the through holes on the rat cage 4.

[0024] The side wall of the unblocking rod 103 is provided with several barbs 104. When the unblocking rod 103 is disengaged from the through hole on the rat cage 4, the barbs 104 can carry out the impurities in the through hole, thereby improving the unblocking effect. The number of unblocking components 10 is equal to the number of horizontal rows of through holes on the rat cage 4. This arrangement ensures that all through holes on the rat cage 4 can be unblocked.

[0025] The working process of this utility model is as follows: When the flow rate of the flow regulating valve needs to be adjusted, the valve stem 9 is driven to rotate, which in turn drives the crank 8 at one end of the valve stem 9 to rotate. The crank 8 drives the piston 7 to slide in the squirrel cage 4 through the connecting rod 6 and the hanging plate 5, thereby changing the number of open and closed through holes on the squirrel cage 4 and thus achieving flow rate regulation.

[0026] During the sliding process of piston 7, piston 7 drives the unblocking component 10 on it to move synchronously. When turntable 102 moves to the inner area of ​​mouse cage 4, unblocking rod 103 on turntable 102 enters the through hole on mouse cage 4 and drives turntable 102 to rotate, thereby unblocking the through hole on mouse cage 4. When unblocking rod 103 is removed from the through hole on mouse cage 4, barb 104 on unblocking rod 103 can carry out impurities in the through hole, thereby improving the unblocking effect.

[0027] 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 flow regulating valve, characterized in that, It includes a valve body (1), a valve seat (2) and a valve core (3). The valve body (1) has openings at both ends, the valve seat (2) is connected to one end opening of the valve body (1), and the valve core (3) is provided inside the valve body (1). A squirrel cage (4) is installed on one side of the valve core (3), and a piston (7) is slidably connected inside the squirrel cage (4). The sliding of the piston (7) is used to control the flow rate of the flow regulating valve. A drive assembly for driving the piston (7) to slide is installed inside the valve body (1). A dredging component (10) is installed on one end face of the piston (7), and the dredging component (10) can dredge the through hole on the rat cage (4) during the sliding of the piston (7).

2. The flow regulating valve according to claim 1, characterized in that: The drive assembly includes a suspension plate (5), a connecting rod (6), and a crank (8). The suspension plate (5) is fixedly connected to the piston (7). One end of the connecting rod (6) is rotatably connected to the suspension plate (5) via a shaft, and the other end of the connecting rod (6) is rotatably connected to the crank (8) via a shaft. The valve body (1) has a hole that passes through the valve core (3), and the valve stem (9) is rotatably connected inside the hole. One end of the valve stem (9) located inside the valve core (3) is connected to the crank (8) key.

3. A flow regulating valve according to claim 1, characterized in that: The unblocking assembly (10) includes a connecting shaft (101), a turntable (102), and an unblocking rod (103). Several brackets are installed on one side end face edge of the piston (7). The turntable (102) is rotatably connected to the brackets via the connecting shaft (101). Several unblocking rods (103) are installed on the arc surface of the turntable (102). The arc spacing length of adjacent unblocking rods (103) is equal to the spacing length of adjacent through holes on the rat cage (4).

4. A flow regulating valve according to claim 3, characterized in that: The side wall of the unblocking rod (103) is provided with several barbs (104).

5. A flow regulating valve according to claim 1, characterized in that: The number of the unblocking components (10) is equal to the number of horizontal rows of through holes on the rat cage (4).

6. A flow regulating valve according to claim 1, characterized in that: Both the valve body (1) and the valve seat (2) are provided with a connecting flange on one side.

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