Large-flow balanced three-way regulating valve

Abstract

The utility model relates to the technical field of three-way regulating valves, in particular to a high-flow balance type three-way regulating valve which comprises a three-way regulating valve body, a sleeve is arranged in the three-way regulating valve body, a valve rod is arranged in the sleeve in a penetrating mode, and the end, close to a lower valve seat, of the valve rod is connected with a valve element which is provided with an upper cavity and a lower cavity. A plurality of upper through holes are annularly formed in the upper cavity, a plurality of lower through holes are annularly formed in the lower cavity, an opening is formed in the bottom end of the lower cavity, an air channel is formed in the center of the valve element, and a sealing assembly is arranged between the upper portion of the valve element and the sleeve and comprises positioning rings symmetrically arranged on the valve element. A plurality of positioning heads are symmetrically and elastically connected to the positioning semi-rings, sealing semi-rings are arranged at the ends, close to the sleeve, of the positioning semi-rings, and sliding rings are arranged on the valve element on the two sides of the sealing semi-rings in a sleeving mode. Therefore, on the premise that the sealing performance between the valve element and the valve body is guaranteed, the size of the valve element is increased, and the flow capacity in the valve body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of three-way regulating valves, in particular to a large-flow balanced three-way regulating valve. Background Art

[0002] Most of the three-way regulating valves used for regulation at home and abroad are unbalanced sleeve regulating valves or single-seat regulating valves, which can withstand a small pressure difference. When the pressure difference of the on-site working conditions is large, it is necessary to use an actuator with a larger thrust to adjust and seal, which will result in a larger actuator. Alternatively, if a piston actuator is directly used, the valve will be small but the actuator will be large.

[0003] At present, some balanced three-way regulating valves, such as the Chinese patent with publication number CN214248396U, disclose a balanced three-way regulating valve, including an upper valve cage and a lower valve cage fixedly arranged in the valve plug cavity from top to bottom, the valve plug includes an annular body, a mounting seat located at the center of the annular body and mounted on the valve stem, and a fixed arm connecting the mounting seat and the annular body, the annular body has a vertically through-going inner passage, the upper valve cage and the lower valve cage are annular and the hollow parts of the two form a valve cage channel for the vertical movement of the valve plug, the upper valve cage is provided with an upper valve cage window opposite to the first connecting port, and the lower valve cage is provided with a lower valve cage window opposite to the second connecting port, the upper valve cage window is closed when the valve plug moves upward, the second branch airway and the third branch airway are connected, and the reliability of operation is ensured, but the flow rate of the above device is small, and the sealing between the valve core and the valve body is poor, which is inconvenient to use.

[0004] How to increase the volume of the valve core and improve the flow capacity in the valve body while ensuring the sealing between the valve core and the valve body has become a technical problem that needs to be broken through.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] In view of the above-mentioned defects, the purpose of the utility model is to provide a large-flow balanced three-way regulating valve with a simple structure. Under the premise of ensuring the sealing between the valve core and the valve body, the valve core volume can be increased and the flow capacity in the valve body can be improved.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a large-flow balanced three-way regulating valve, including a three-way regulating valve body, a sleeve is provided in the three-way regulating valve body, a valve stem is passed through the sleeve, the end of the valve stem close to the lower valve seat is connected to the valve core, an upper cavity and a lower cavity are provided on the valve core, a plurality of upper through holes are arranged in the ring of the upper cavity, a plurality of lower through holes are arranged in the ring of the lower cavity, the bottom end of the lower cavity is an opening, and an airway is provided at the center of the valve core.

[0008] A sealing assembly is provided between the upper part of the valve core and the sleeve, and the sealing assembly includes a positioning ring symmetrically arranged on the valve core, and the positioning ring includes two symmetrically arranged positioning half rings, and a plurality of positioning heads are symmetrically and elastically connected to the positioning half rings. A positioning hole cooperating with the positioning head is provided in the valve core, and a sealing half ring is provided at one end of the positioning half ring close to the sleeve, and sliding rings are sleeved on the valve core on both sides of the sealing half ring.

[0009] According to the large-flow balanced three-way regulating valve of the utility model, the end of the positioning head close to the positioning half ring is inserted into the positioning half ring, and the positioning head in the positioning half ring is symmetrically provided with plug blocks, and the positioning half ring is provided with slots matching with the plug blocks, the plug blocks are slidably set in the slots, and elastic parts are provided between the plug blocks and the slots.

[0010] According to the large-flow balanced three-way regulating valve of the utility model, one end of the sliding ring close to the valve core is connected to a plurality of outer sleeve rods, the outer sleeve rods are evenly distributed along the inner ring surface of the sliding ring, the inside of the outer sleeve rods are elastically connected to inner sleeve rods, and one end of the inner sleeve rod close to the valve core passes through the outer sleeve rod to connect to the valve core.

[0011] According to the large flow balanced three-way regulating valve of the utility model, a sealing ring is provided between the end of the sliding ring away from the sleeve and the valve core.

[0012] According to the large flow balanced three-way regulating valve of the utility model, the elastic member is a spring.

[0013] According to the large flow balanced three-way regulating valve of the utility model, the airway is a "Y"-shaped structure, the top end of the airway is connected to the inside of the sleeve, and the bottom end of the airway is connected to the lower cavity.

[0014] The purpose of the utility model is to provide a large flow balanced three-way regulating valve, including an upper cavity and a lower cavity of a valve core, the valve core can be used to control the outlet of liquid outflow, and the valve core volume is increased and the flow capacity in the valve body is improved under the premise of ensuring the sealing between the valve core and the valve body; a sealing ring is provided between the end of the sliding ring away from the sleeve and the valve core to further ensure the sealing between the sliding ring and the valve core; the sliding ring and the sealing half-ring cooperate with each other to improve the sealing between the valve core and the sleeve and ensure the stable movement of the valve core. In summary, the beneficial effects of the utility model are: the valve core volume can be increased and the flow capacity in the valve body can be improved under the premise of ensuring the sealing between the valve core and the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the utility model when a horizontal passage is formed;

[0016] Figure 2 for Figure 1A magnified view of part A;

[0017] Figure 3 This is a structural diagram of the utility model when a vertical passage is formed;

[0018] In the figure: 1-three-way regulating valve body, 11-valve body, 12-upper cover, 13-gasket, 14-upper valve seat, 15-lower valve seat, 16-valve stem, 17-sleeve, 18-connecting piece, 2-valve core, 21-upper cavity, 211-upper through hole, 22-lower cavity, 221-lower through hole, 23-airway, 24-sealing assembly, 241-positioning half ring, 242-positioning head, 243-sealing half ring, 244-outer rod, 245-inner rod, 246-sliding ring, 247-sealing ring, 248-elastic part. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0022] See also Figure 1 to Figure 3The utility model provides a large flow balanced three-way regulating valve, including a three-way regulating valve body 1, the three-way regulating valve body 1 includes a valve body 11 and an upper cover 12 connected by a connecting piece 18, a gasket 13 is arranged between the valve body 11 and the upper cover 12, an upper valve seat 14 and a lower valve seat 15 are arranged in the valve body 11, a sleeve 17 is arranged above the upper valve seat 14, a valve stem 16 is passed through the sleeve 17, one end of the valve stem 16 close to the lower valve seat 15 is connected to the valve core 2, the outer periphery of the valve core 2 abuts the sleeve 17, other conventional structures of the three-way regulating valve body 1 are the same as the prior art, such as a handwheel for controlling the valve stem 16, and a packing structure between the valve stem 16 and the valve body 11, which are mature prior art in this field, and its specific structure and working principle are not repeated here.

[0023] See also Figure 1 to Figure 3 Preferably, the connecting member 18 is a connecting bolt for easy disassembly.

[0024] See also Figure 1 to Figure 3 The valve core 2 is provided with an upper cavity 21, which is an annular cavity structure. The inner ring of the upper cavity 21 is provided with a plurality of upper through holes 211. The lower part of the valve core 2 is provided with a lower cavity 22, and the inner ring of the lower cavity 22 is provided with a plurality of lower through holes 221. The bottom end of the lower cavity 22 is an opening. An airway 23 is provided at the center of the valve core 2. The airway 23 is a "Y"-shaped structure, and the top end of the airway 23 is connected to the inside of the sleeve 17, and the bottom end of the airway 23 is connected to the lower cavity 22. In the process of moving the valve core 2, the airway 23 can balance the air pressure on the upper and lower sides of the valve core 2 to ensure smooth movement of the valve core 2; slide the valve core 2 downward, and when the bottom end of the valve core 2 abuts against the lower valve seat 15 (direction reference Figure 1 ), the liquid enters the valve body 11 through the inlet on the left side of the valve body 11, then enters the upper cavity 21 through the upper through hole 211 at the lower part (due to the sealing effect of the lower valve seat 15, the liquid cannot enter the lower cavity 22 through the lower through hole 221), and finally flows out from the outlet on the right side of the valve body 11 after passing through the upper through hole 211 at the upper part; the valve core 2 is slid upward, and the middle part of the valve core 2 abuts against the upper valve seat 14 (direction reference Figure 3 ), the liquid enters the valve body 11 through the inlet on the left side of the valve body 11, then enters the lower cavity 22 through the lower through hole 221 (due to the sealing effect of the upper valve seat 14, the liquid cannot enter the upper cavity 21 through the upper through hole 211), and finally flows out from the opening at the bottom end of the lower cavity 22 through the outlet below. In this way, the valve core 2 can be used to control the outlet for liquid outflow.

[0025] See also Figure 1 to Figure 3A sealing assembly 24 is provided between the upper part of the valve core 2 and the sleeve 17. The sealing assembly 24 includes a positioning ring symmetrically arranged on the valve core 2. The positioning ring includes two symmetrically arranged positioning semi-rings 241. The positioning semi-rings 241 are symmetrically and elastically connected with a plurality of positioning heads 242 (the ends of the positioning heads 242 close to the positioning semi-ring 241 are inserted into the positioning semi-ring 241, and the positioning heads 242 in the positioning semi-ring 241 are symmetrically provided with plug blocks. The positioning semi-ring 241 is provided with slots matching with the plug blocks. The plug blocks are slidably arranged in the slots, and elastic members 248 are provided between the plug blocks and the slots). A positioning hole matching with the positioning head 242 is provided in the valve core 2. The position of the positioning semi-ring 241 can be fixed by using the positioning head 242 to cooperate with the positioning hole. The ends of the positioning semi-ring 241 close to the sleeve 17 are provided with a sealing semi-ring 243. The ends of the sealing semi-ring 243 close to the sleeve 17 abut against the sleeve 1 7. Sliding rings 246 are sleeved on the valve core 2 on both sides of the upper and lower sides of the sealing half ring 243. The sliding ring 246 and the sealing half ring 243 have a certain deformation ability. The end of the sliding ring 246 close to the valve core 2 is connected to a plurality of outer sleeve rods 244. The outer sleeve rods 244 are evenly distributed along the inner ring surface of the sliding ring 246. The inner sleeve rods 245 are elastically connected to the inner sleeve rods 245 (the connection method between the outer sleeve rods 244 and the inner sleeve rods 245 is the same as the connection method between the positioning head 242 and the positioning half ring 241, and its specific structure and working principle are not repeated here). The end of the inner sleeve rod 245 close to the valve core 2 passes through the outer sleeve rod 244 to connect with the valve core 2. The valve core 2 is provided with an installation groove for installing the positioning half ring 241 and the sliding ring 246. The sliding ring 246 and the sealing half ring 243 cooperate with each other to improve the sealing between the valve core 2 and the sleeve 17, thereby ensuring the stable movement of the valve core 2.

[0026] See also Figure 1 to Figure 3 Preferably, a sealing ring 247 is provided between the end of the sliding ring 246 away from the sleeve 17 and the valve core 2 to further ensure the sealing between the sliding ring 246 and the valve core 2.

[0027] See also Figure 1 to Figure 3 Preferably, the elastic member 248 is a spring to provide return power.

[0028] See also Figure 1 to Figure 3 , slide the valve core 2 downward, the valve core 2 abuts the lower valve seat 15, the liquid first enters the upper cavity 21 through the upper through hole 211 at the lower part, and finally flows out from the outlet on the right side of the valve body 11 after passing through the upper through hole 211 at the upper part; slide the valve core 2 upward, the middle part of the valve core 2 abuts the upper valve seat 14, the liquid enters the lower cavity 22 through the lower through hole 221, and finally flows out from the outlet below from the opening at the bottom end of the lower cavity 22, thus completing the switching of the flow channel.

[0029] The utility model provides a large flow balanced three-way regulating valve, including an upper cavity and a lower cavity of a valve core. The valve core can be used to control the outlet of liquid outflow, and the valve core volume is increased and the flow capacity in the valve body is improved under the premise of ensuring the sealing between the valve core and the valve body; a sealing ring is provided between the end of the sliding ring away from the sleeve and the valve core to further ensure the sealing between the sliding ring and the valve core; the sliding ring and the sealing half-ring cooperate with each other to improve the sealing between the valve core and the sleeve and ensure the stable movement of the valve core. In summary, the beneficial effects of the utility model are: the valve core volume can be increased and the flow capacity in the valve body can be improved under the premise of ensuring the sealing between the valve core and the valve body.

[0030] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A large flow balanced three-way regulating valve, characterized in that: It comprises a three-way regulating valve body, a sleeve is arranged in the three-way regulating valve body, a valve stem is passed through the sleeve, one end of the valve stem close to the lower valve seat is connected to the valve core, an upper cavity and a lower cavity are arranged on the valve core, a plurality of upper through holes are arranged in the upper cavity, a plurality of lower through holes are arranged in the lower cavity, the bottom end of the lower cavity is an opening, and an airway is arranged at the center of the valve core; A sealing assembly is provided between the upper part of the valve core and the sleeve, and the sealing assembly includes a positioning ring symmetrically arranged on the valve core, and the positioning ring includes two symmetrically arranged positioning half rings, and a plurality of positioning heads are symmetrically and elastically connected to the positioning half rings. A positioning hole cooperating with the positioning head is provided in the valve core, and a sealing half ring is provided at one end of the positioning half ring close to the sleeve, and sliding rings are sleeved on the valve core on both sides of the sealing half ring.

2. The large flow balanced three-way regulating valve according to claim 1 is characterized in that: The ends of the positioning heads close to the positioning half ring are inserted into the positioning half ring, and the positioning heads in the positioning half ring are symmetrically provided with plug blocks, the positioning half ring is provided with slots that cooperate with the plug blocks, the plug blocks are slidably set in the slots, and elastic parts are provided between the plug blocks and the slots.

3. The large flow balanced three-way regulating valve according to claim 1 is characterized in that: The end of the sliding ring close to the valve core is connected to a plurality of outer sleeve rods, the outer sleeve rods are evenly distributed along the inner ring surface of the sliding ring, the inner sleeve rods are elastically connected to the inner sleeve rods, and the end of the inner sleeve rod close to the valve core passes through the outer sleeve rod to connect the valve core.

4. The large flow balanced three-way regulating valve according to claim 1 is characterized in that: A sealing ring is arranged between the end of the sliding ring away from the sleeve and the valve core.

5. The large flow balanced three-way regulating valve according to claim 2 is characterized in that: The elastic member is a spring.

6. The large flow balanced three-way regulating valve according to claim 1 is characterized in that: The airway is a "Y"-shaped structure, the top end of the airway is connected to the inside of the sleeve, and the bottom end of the airway is connected to the lower cavity.

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