Piston type regulating valve cage body flow guiding and corrosion eliminating structure

Abstract

The utility model provides a piston type regulating valve cage body flow guiding and corrosion eliminating structure, which belongs to the field of regulating valve equipment and comprises a valve body shell, a water inlet is arranged at one end of the valve body shell, a reciprocating motion mechanism is arranged close to the water inlet, a water outlet is arranged at the other end of the valve body shell, a mouse cage is arranged at the water outlet, and a piston is attached to the inner side face of the mouse cage. During use, the valve body shell is limited and fixed firstly, then the driving source is connected, the output end of the driving source is connected with the valve shaft, the valve shaft is driven by the driving source to rotate, adjustment of the piston is completed, when the driving source drives the valve shaft to rotate, the valve shaft drives the crank to rotate, the crank drives the connecting rod, and the piston is driven by the connecting rod. When the crank rotates by a certain angle to move the piston to one end of the mouse cage, the driving source rotates reversely, the connecting rod support is driven to reset, and the piston moves to the other end of the mouse cage.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve equipment, specifically to a flow guiding and erosion-reducing structure for a piston-type regulating valve cage. Background Technology

[0002] In numerous industrial sectors, such as power plants, water diversion, and water supply, the requirements for precise flow regulation and pressure control of fluids are becoming increasingly stringent. Traditional valves face many challenges in fulfilling these functions. For example, under some complex operating conditions, it is difficult to simultaneously meet the demands for high-precision regulation and long-term operation. With industrial development, expectations for valve performance continue to rise, requiring not only adaptability to various water qualities, including clean water, natural river and lake water, and lightly polluted water, but also the ability to address issues such as cavitation to extend service life. Utility Model Content

[0003] In view of this, this utility model provides a flow-guiding and erosion-eliminating structure for a piston-type regulating valve cage. The piston can be driven axially along the guide rail by a crank connecting rod, forming a unique annular flow channel with controllable flow area, achieving precise regulation of flow rate and pressure. Simultaneously, the specially designed flow channel structure, such as the jet collision generated by the contraction at the outlet towards the center of the pipeline, effectively prevents cavitation. This provides significant advantages in improving valve performance and extending service life, thus leading to its widespread application in related fields.

[0004] To solve the above-mentioned technical problems, this utility model provides a piston-type regulating valve cage flow guiding and erosion-reducing structure, including a valve body shell, which is used to limit the water flow. One end of the valve body shell is provided with a water inlet for injecting water into the valve body. Near the water inlet is a reciprocating motion mechanism for driving the piston to move back and forth on the cage. The other end of the valve body shell is provided with a water outlet for facilitating the outflow of water injected into the valve body. A cage is provided at the water outlet, and multiple small holes are evenly arranged on the cage to allow the water column to collide and dissipate energy, effectively preventing violent vibration caused by energy dissipation. A piston is attached to the inner side of the cage and moves axially along the guide rail, forming an axially symmetrical annular flow channel inside the valve body and effectively controlling the flow area, forming a flow channel with a decreasing cross-section from the inlet to the outlet, thereby realizing the regulation of flow rate and control of pressure. One end of the piston is connected to the reciprocating motion mechanism.

[0005] The inner wall of the valve body is provided with a guide rail, which is used to limit the piston. The piston is provided with a sliding groove that matches the guide rail. The sliding groove is used to cooperate with the guide rail to make the piston move more smoothly and prevent the piston from shifting when the water flow causes impact. The sliding groove is slidably set on the guide rail.

[0006] The piston is located on one side of the squirrel cage, near the reciprocating mechanism.

[0007] The reciprocating motion mechanism includes a valve shaft that is laterally disposed on the valve body housing. The valve shaft is used to drive the crank to rotate. The crank is connected to the valve shaft. The crank is used to connect to the connecting mechanism and drive the connecting mechanism to perform reciprocating motion. The connecting mechanism is connected to the crank.

[0008] The connecting mechanism includes a pin hole on the crank, which is used to limit the connection of the pin shaft. The pin shaft is inserted into the pin hole and is used to connect the connecting rod. A connecting piece is connected to the pin shaft.

[0009] The connecting component includes a connecting rod rotatably mounted on a pin. The connecting rod is used to connect to a supporting connecting rod bracket. A connecting rod bracket is connected to the connecting rod. The connecting rod bracket is used to connect to a piston and drive the piston to move back and forth. The cross-section from the inlet to the outlet of the squirrel cage is a decreasing flow channel. The connecting rod bracket is connected to the piston.

[0010] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0011] First, the valve body shell is fixed in place. Then, the drive source is connected, and its output end is connected to the valve shaft. The drive source rotates the valve shaft, thus adjusting the piston. When the drive source rotates the valve shaft, the valve shaft rotates the crank, which in turn rotates the connecting rod. The connecting rod then moves the connecting rod support to one side. After the crank rotates a certain angle and moves the piston to one end of the squirrel cage, the drive source reverses, resetting the connecting rod support and moving the piston to the other end of the squirrel cage. When the piston moves along the inner wall of the squirrel cage via the connecting rod support, as it moves from the end near the reciprocating mechanism towards the outlet, it moves axially along the guide rail, forming an axially symmetrical annular flow channel inside the valve body. This effectively controls the flow area, creating a flow channel with a decreasing cross-section from the inlet to the outlet, thereby achieving flow regulation and pressure control. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of a piston-type regulating valve cage flow guiding and erosion elimination structure according to the present invention;

[0013] Figure 2 This is a top view of the structure of this utility model;

[0014] Figure 3 This is a cross-sectional structural diagram of the present utility model AA;

[0015] Figure 4 This is a front view structural diagram of the present invention.

[0016] Explanation of reference numerals in the attached drawings: 100, valve body housing; 101, water inlet; 102, water outlet; 103, squirrel cage; 104, piston; 105, guide rail; 106, slide groove; 120, reciprocating motion mechanism; 121, valve shaft; 122, crank; 123, pin hole; 124, pin shaft; 125, connecting rod; 126, connecting rod bracket. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0018] like Figure 1-4 As shown:

[0019] This embodiment provides a flow-guiding and erosion-reducing structure for a piston-type regulating valve cage, including a valve body shell 100 for limiting water flow. One end of the valve body shell 100 has a water inlet 101 for injecting water into the valve body. Near the water inlet 101, a reciprocating mechanism 120 is provided for driving a piston 104 to move back and forth on the cage 103. The other end of the valve body shell 100 has a water outlet 102 for facilitating the outflow of water injected into the valve body. A squirrel cage 103 is provided at the outlet 102. Multiple small holes are evenly arranged on the squirrel cage 103, which can dissipate energy by the collision of water columns and effectively prevent violent vibration caused by energy dissipation. A piston 104 is attached to the inner side of the squirrel cage 103. The piston 104 moves axially along the guide rail 105 to form an axially symmetrical annular flow channel inside the valve body and effectively control the flow area, forming a flow channel with a decreasing cross section from the inlet to the outlet, thereby realizing the regulation of flow rate and control of pressure. One end of the piston 104 is connected to the reciprocating motion mechanism 120.

[0020] A guide rail 105 is provided on the inner wall of the valve body housing 100. The guide rail 105 is fixedly installed inside the valve body housing 100. The guide rail 105 is used to limit the piston 104. The piston 104 is provided with a sliding groove 106 that matches the guide rail 105. The sliding groove 106 is used to cooperate with the guide rail 105 to make the piston 104 move more smoothly and to prevent the piston 104 from being displaced when the water flow causes impact. The sliding groove 106 is slidably installed on the guide rail 105.

[0021] The piston 104 is located on one side of the squirrel cage 103 near one end of the reciprocating motion mechanism 120.

[0022] The reciprocating motion mechanism 120 includes a valve shaft 121 that is laterally disposed on the valve body housing 100. The valve shaft 121 is used to drive the crank 122 to rotate. The crank 122 is connected to the valve shaft 121. The crank 122 is used to connect to the connecting mechanism and drive the connecting mechanism to perform reciprocating motion. The connecting mechanism is connected to the crank 122.

[0023] The connecting mechanism includes a pin hole 123 connected to the crank 122. The pin hole 123 is used to limit the connection of the pin shaft 124. The pin shaft 124 is inserted into the pin hole 123 and is used to connect the connecting rod 125. A connecting piece is connected to the pin shaft 124.

[0024] The connecting component includes a connecting rod 125 rotatably mounted on a pin 124. The connecting rod 125 has a round hole that matches the pin hole 123. The pin 124 passes through the pin hole 123 and the round hole on the connecting rod 125 to connect and support the connecting rod 125. The connecting rod 125 is used to connect and support the connecting rod 125 bracket. The connecting rod 125 bracket is connected to the connecting rod 125. The other end of the connecting rod 125 is also rotatably connected to the connecting rod 125. The connecting rod 125 bracket is connected and positioned in the middle of the connecting rod 125. The connecting rod 125 bracket is used to connect the piston 104 and drive the piston 104 to move back and forth. The flow channel from the inlet to the outlet of the squirrel cage 103 has a decreasing cross section. The connecting rod 125 bracket is connected to the piston 104.

[0025] Working principle: In use, the valve body shell 100 is first fixed in a limiting position. Then, the drive source is connected, and the output end of the drive source is connected to the valve shaft 121. The drive source drives the valve shaft 121 to rotate, thereby adjusting the piston 104. When the drive source drives the valve shaft 121 to rotate, the valve shaft 121 drives the crank 122 to rotate. The crank 122 drives the connecting rod 125, and the connecting rod 125 moves the connecting rod 125 bracket to one side. After the crank 122 rotates a certain angle and moves the piston 104 to one end of the squirrel cage 103, the drive source is reversed, causing the connecting rod 125 bracket to reset, and the piston 104 moves to the other end of the squirrel cage 103. When the piston 104 moves along the inner wall of the squirrel cage 103 via the connecting rod 125, and moves from the end near the reciprocating mechanism 120 towards the outlet 102, the piston 104 moves axially along the guide rail 105, forming an axially symmetrical annular flow channel inside the valve body. This effectively controls the flow area, creating a flow channel with a decreasing cross-section from the inlet to the outlet, thereby achieving flow regulation and pressure control. The crank 122 and connecting rod 125 drive the piston 104 to move axially along the guide rail 105, forming a unique annular flow channel with a controllable flow area, achieving precise regulation of flow and pressure. Simultaneously, the specially designed flow channel structure, such as the jet collision generated by the contraction towards the center of the pipeline at the outlet, effectively prevents cavitation, demonstrating significant advantages in improving valve performance and extending service life, thus finding widespread application in related fields.

[0026] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A flow guiding and erosion-reducing structure for a piston-type regulating valve cage, characterized in that: The device includes a valve body housing (100), one end of which is provided with a water inlet (101), a reciprocating motion mechanism (120) is provided near the water inlet (101), and the other end of which is provided with a water outlet (102). A rat cage (103) is provided at the water outlet (102), and a piston (104) is attached to the inner side of the rat cage (103). One end of the piston (104) is connected to the reciprocating motion mechanism (120).

2. The piston-type regulating valve cage flow guiding and erosion-reducing structure as described in claim 1, characterized in that: The inner wall of the valve body housing (100) is provided with a guide rail (105), and the piston (104) is provided with a sliding groove (106) that matches the guide rail (105). The sliding groove (106) is slidably disposed on the guide rail (105).

3. The piston-type regulating valve cage flow guiding and erosion-reducing structure as described in claim 2, characterized in that: The piston (104) is located on one side of the cage (103) near one end of the reciprocating motion mechanism (120).

4. The piston-type regulating valve cage flow guiding and erosion-reducing structure as described in claim 3, characterized in that: The reciprocating motion mechanism (120) includes a valve shaft (121) that is laterally disposed on the valve body housing (100), a crank (122) is connected to the valve shaft (121), and a connecting mechanism is connected to the crank (122).

5. The piston-type regulating valve cage flow guiding and erosion-reducing structure as described in claim 4, characterized in that: The connecting mechanism includes a pin hole (123) connected to the crank (122), a pin shaft (124) inserted into the pin hole (123), and a connector connected to the pin shaft (124).

6. The piston-type regulating valve cage flow guiding and erosion-reducing structure as described in claim 5, characterized in that: The connector includes a connecting rod (125) rotatably mounted on the pin (124), a connecting rod (125) bracket connected to the connecting rod (125), and the connecting rod (125) bracket connected to the piston (104).

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