Valve core structure of regulating valve

Abstract

The utility model discloses a valve element structure of a regulating valve, and belongs to the technical field of valves. The valve mainly comprises a valve body; the feeding hole is formed in one end of the valve body; the valve core is positioned in the valve body; the flow dividing mechanism is installed between the valve body and the feeding port, and the flow dividing mechanism comprises a housing which is installed between the valve body and the feeding port; the blocking ring is installed in the housing, a plurality of sets of blades are circumferentially arranged in the blocking ring, and a plurality of sets of small holes are formed in the blades; the movable ring is installed in the housing, the movable ring and the blocking ring are in the same configuration, and meshing teeth are arranged on one side of the movable ring; the guide grooves are formed in the two sides of the upper end of the housing; the guide rod is arranged in the guide groove in a sliding manner; the rack is installed on the outer side of the guide rod and meshed with the meshing teeth on one side of the movable ring. According to the valve element structure of the adjusting valve, the flow dividing mechanism is arranged, the water flow strength is weakened, and therefore the effect of relieving abrasion of the valve element is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of valves, in particular to a regulating valve core structure. BACKGROUND

[0002] The regulating valve, also known as a control valve, is an important device in the field of industrial automatic process control. The regulating valve changes the flow, pressure, temperature, liquid level and other process parameters of the medium by receiving the control signal output by the regulating control unit and operating with power.

[0003] The regulating valve core is the core component of the regulating valve. The regulating valve core changes the flow area between the valve core and the valve seat to achieve throttling of the fluid, thereby controlling the flow, pressure and temperature of the fluid. The opening degree of the valve core directly affects the flow area of the fluid, thereby achieving accurate control of the fluid parameters.

[0004] For example, the patent with the publication number CN212804526U discloses a regulating valve core structure. The square valve shaft can make the actuator and the valve body more firmly connected, avoid slipping and falling during operation, solve the problem of O-ring wear, effectively improve the service life, and reduce the production cost.

[0005] In actual use of the regulating valve, the valve core of the regulating valve may be subjected to strong scouring by the fluid under long-term high pressure and high flow rate working conditions. Under such strong scouring, the valve core material may be gradually worn, reducing the sealing performance and regulating accuracy of the valve core. However, after the valve core is worn, leakage may occur, affecting the normal operation and safety of the system.

[0006] Therefore, it is necessary to provide a regulating valve core structure to solve the above problems.

[0007] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background technology of the concept of the present application, and therefore, it can contain information that does not constitute prior art. SUMMARY

[0008] Based on the above problems existing in the prior art, the present application solves the problem of providing a regulating valve core structure to solve the problem of valve core material gradually wearing under strong scouring by the fluid, reducing the sealing performance and regulating accuracy of the valve core.

[0009] The technical solution adopted by the present application to solve the technical problems is: a regulating valve core structure, comprising:

[0010] a valve body;

[0011] a feed inlet located at one end of the valve body;

[0012] a valve core located inside the valve body;

[0013] a flow distribution mechanism installed between the valve body and the feed inlet, the flow distribution mechanism being used to relieve fluid flow rate, the flow distribution mechanism comprising:

[0014] a cover installed between the valve body and the feed inlet;

[0015] a blocking ring installed inside the cover, a plurality of sets of vanes being circumferentially arranged inside the blocking ring, a plurality of small holes being formed on the vanes;

[0016] a movable ring installed inside the cover, the movable ring being configured in the same way as the blocking ring, a plurality of engagement teeth being formed on one side of the movable ring;

[0017] a guide groove located on both sides of the upper end of the cover;

[0018] a guide rod slidingly arranged in the guide groove;

[0019] a rack installed on the outside of the guide rod, the rack being engaged with the engagement teeth on one side of the movable ring.

[0020] Further, a discharge outlet is fixedly arranged on the side of the valve body away from the feed inlet, a transverse S-shaped flow channel is formed inside the valve body, and the transverse S-shaped flow channel is in communication with the feed inlet and the discharge outlet;

[0021] a groove is vertically formed in the transverse S-shaped flow channel inside the valve body, a bushing is fixedly arranged inside the groove, the bushing is hollow, a first sealing ring is fixedly arranged at the connection between the bushing and the groove, the upper end of the bushing is fixedly connected with the inside of the valve body, the valve core is slidingly arranged inside the bushing, and a second sealing ring is fixedly arranged on the outside of the upper end of the valve core.

[0022] Further, a valve seat is fixedly arranged on the upper end of the valve body, a driving assembly is arranged on the upper end of the valve seat, the driving assembly comprises a valve rod screwedly arranged on the valve seat, one end of the valve rod extends through the valve seat to the inside of the valve body, a screw cap is arranged on the valve seat, a hand wheel is fixedly arranged on the end of the valve rod close to the screw cap, and the valve rod is fixedly connected with the valve core inside the valve body;

[0023] the top ends of the two sets of guide rods are fixedly provided with a connecting frame, a sliding groove is formed on one side of the valve seat, a ring is fixedly arranged on the valve rod, a fixed rod is fixedly arranged on the ring, and the end of the fixed rod is fixedly connected with the connecting frame.

[0024] Further, a plurality of through holes are formed on the bushing.

[0025] Further, the cover is hollowly arranged, and gaps are arranged between the plurality of groups of blades, and a sealing gasket is fixedly arranged at the connection between the movable ring and the valve body.

[0026] The beneficial effects of the present application are that the valve core structure of the present application weakens the water flow, thereby relieving the wear of the valve core.

[0027] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the present application, serve to explain the present application, and do not constitute an improper limitation of the present application.

[0029] In the drawings:

[0030] Figure 1 is a whole schematic view of the valve core structure of the present application;

[0031] Figure 2 is a partial sectional view of the valve core structure of the present application;

[0032] Figure 3 is a whole sectional view of the valve core structure of the present application;

[0033] Figure 4 is a partial view of the valve core structure of the present application;

[0034] Figure 5 is Figure 4 is an exploded view of the shunt mechanism;

[0035] In the drawings, various reference signs represent:

[0036] 1, valve body; 2, feed inlet; 3, discharge outlet; 5, shunt mechanism; 50, cover; 51, sealing gasket; 52, blocking ring; 53, movable ring; 54, rack; 55, guide groove; 56, connecting frame; 57, fixed rod; 58, ring; 4, valve seat; 6, valve stem; 7, valve core; 8, bushing; 9, screw cap; 10, hand wheel; 12, groove; 14, first sealing ring; 15, second sealing ring; 16, through hole; 59, guide rod. DETAILED DESCRIPTION

[0037] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0039] As shown in Figures 1-4 The present application provides a regulating valve spool structure, which comprises a valve body 1 and a fixedly arranged valve seat 4 on the upper end of the valve body 1, and a drive assembly arranged on the upper end of the valve seat 4, the drive assembly being used for controlling the opening and closing of the gate valve, the drive assembly comprising a valve stem 6 threadedly arranged on the valve seat 4, and the valve stem 6 extending through the valve seat 4 to the inside of the valve body 1 at one end thereof.

[0040] A hand wheel 10 is fixedly arranged on the end of the valve stem 6 close to the screw cap 9, the hand wheel 10 being used for manual operation by workers, and the valve stem 6 being driven to vertically move up and down by rotating the hand wheel 10.

[0041] A screw cap 9 is arranged on the valve seat 4, and the hand wheel 10 is fixedly arranged on the end of the valve stem 6 close to the screw cap 9, the hand wheel 10 being used for manual operation by workers, and the valve stem 6 being driven to vertically move up and down by rotating the hand wheel 10.

[0042] A recess 12 is vertically arranged in the transverse S-shaped flow channel in the inside of the valve body 1, and a bushing 8 is fixedly arranged in the recess 12, the bushing 8 being hollow, and a first sealing ring 14 being fixedly arranged at the connection between the bushing 8 and the recess 12, and the upper end of the bushing 8 being fixedly connected with the inside of the valve body 1.

[0043] The spool 7 is slidingly arranged in the bushing 8, and a second sealing ring 15 is fixedly arranged on the outer upper end of the spool 7, so as to improve the sealing between the bushing 8 and the spool 7, and the upper end of the spool 7 is fixedly connected with the valve stem 6, so that when the valve stem 6 is driven to vertically move up and down by rotating the hand wheel 10, the spool 7 is driven to vertically move up and down along the inside of the bushing 8.

[0044] And a plurality of groups of through holes 16 are formed in the bushing 8, which are used to allow fluid to pass through. When the valve needs to be opened, rotating the hand wheel 10 drives the valve rod 6 to drive the valve core 7 to move vertically upward along the inside of the bushing 8, and fluid can be introduced into the transverse S-shaped flow channel through the inlet 2, and then flow to the outlet 3 through the through holes 16 in the bushing 8. When the valve needs to be closed, only need to rotate the hand wheel 10 to drive the valve rod 6 to drive the valve core 7 to move vertically downward along the inside of the bushing 8 until the through holes 16 in the bushing 8 are blocked, and the closing of the valve is completed.

[0045] As shown in Figure 1 and Figures 4-5 In order to alleviate the strong scouring effect of the valve core 7 under high pressure and high flow rate for a long time, thereby gradually wearing the material of the valve core 7, a flow splitting mechanism 5 is arranged at the connection between the inlet 2 and the valve body 1. The flow splitting mechanism 5 includes a shell 50 fixedly arranged between the inlet 2 and the valve body 1. The shell 50 is hollow, and a blocking ring 52 is fixedly arranged inside the shell 50. A plurality of groups of blades are fixedly arranged inside the blocking ring 52. The blades are circumferentially distributed between the inlet 2 and the valve body 1. A plurality of small holes are formed in the blades, and gaps are formed between the groups of blades to facilitate smooth flow of fluid. An active ring 53 is rotatably arranged inside the shell 50 between the blocking ring 52 and the valve body 1. The active ring 53 has the same configuration as the blocking ring 52.

[0046] A sealing gasket 51 is fixedly arranged at the connection between the active ring 53 and the valve body 1. Engaging teeth are formed on one side of the active ring 53. Guide grooves 55 are fixedly arranged on both sides of the upper end of the shell 50. Guide rods 59 are slidably arranged inside the guide grooves 55. A rack 54 is fixedly arranged on the outer side of one of the guide rods 59. The rack 54 penetrates the shell 50 and engages with the engaging teeth on the outer side of the active ring 53. Pulling the guide rods 59 to vertically slide along the guide grooves 55 can drive the active ring 53 to rotate inside the shell 50.

[0047] A connecting frame 56 is fixedly arranged at the top end of the two guide rods 59. A sliding groove (not labeled in the figure) is formed in the valve seat 4 on one side of the flow splitting mechanism 5. A ring 58 is fixedly arranged on the valve rod 6. A fixed rod 57 is fixedly arranged on the ring 58. The distal end of the fixed rod 57 is fixedly connected with the connecting frame 56.

[0048] When the valve is opened, the active ring 53 and the blocking ring 52 are in an overlapping state. At this time, fluid flows into the gaps between the groups of blades of the blocking ring 52 (the active ring 53) because of the blocking of the groups of blades, thereby reducing the scouring force on the valve core 7.

[0049] When it is needed to close the valve, the ring 58 will move down synchronously with the valve rod 6, at this time the fixed rod 57 will exert a downward pressure on the guide rod 59 through the connecting frame 56 under the movement of the ring 58, so as to make the guide rod 59 move vertically downward along the guide groove 55, and at the same time drive the movable ring 53 to rotate, when the valve is completely closed, the blades on the movable ring 53 will block the gap on the blocking ring 52, at this time the fluid can pass through the small holes on the movable ring 53 and the blocking ring 52, so as to further weaken the impact force of the fluid.

[0050] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A trim structure for a regulating valve, characterized by: It includes: Valve body (1); Feed port (2), which is located at one end of the valve body (1); Valve core (7), which is located inside the valve body (1); Flow dividing mechanism (5) installed between the valve body (1) and the feed port (2), which is used to relieve fluid flow rate, and the flow dividing mechanism (5) includes: Cover (50) installed between the valve body (1) and the feed port (2); Barrier ring (52) installed inside the cover (50), with multiple sets of vanes circumferentially arranged inside the barrier ring (52), and multiple sets of small holes are opened on the vanes; Movable ring (53) installed inside the cover (50), which is configured the same as the barrier ring (52), and the movable ring (53) has meshing teeth on one side; Guide groove (55) located on both sides of the upper end of the cover (50); Guide rod (59) slidingly arranged in the guide groove (55); Rack (54) installed on the outside of the guide rod (59), which is engaged with the meshing teeth on one side of the movable ring (53).

2. The trim structure of a regulating valve according to claim 1, characterized in that: The valve body (1) is fixedly provided with a discharge port (3) on the side away from the feed port (2), and a transverse S-shaped flow channel is opened in the valve body (1), which is communicated with the feed port (2) and the discharge port (3); A groove (12) is vertically opened in the transverse S-shaped flow channel inside the valve body (1), a bushing (8) is fixedly arranged inside the groove (12), the bushing (8) is hollow, a first sealing ring (14) is fixedly arranged at the connection between the bushing (8) and the groove (12), the upper end of the bushing (8) is fixedly connected with the inside of the valve body (1), and the valve core (7) is slidingly arranged in the bushing (8).

3. The trim structure of a regulating valve according to claim 1, wherein: A valve seat (4) is fixedly arranged on the upper end of the valve body (1), a driving assembly is arranged on the upper end of the valve seat (4), the driving assembly includes a valve stem (6) threaded on the valve seat (4), one end of the valve stem (6) extends through the valve seat (4) to the inside of the valve body (1), a screw cap (9) is arranged on the valve seat (4), a hand wheel (10) is fixedly arranged on one end of the valve stem (6) close to the screw cap (9), and the valve stem (6) is fixedly connected with the valve core (7) inside the valve body (1); The top ends of the two groups of guide rods (59) are fixedly provided with a connecting frame (56), a sliding slot is opened on one side of the valve seat (4), a ring (58) is fixedly arranged on the valve stem (6), a fixed rod (57) is fixedly arranged on the ring (58), and the distal end of the fixed rod (57) is fixedly connected with the connecting frame (56).

4. The trim structure of claim 2 wherein: Multiple sets of through holes (16) are opened on the bushing (8).

5. The trim structure of claim 1 wherein: The cover (50) is hollowly arranged, and gaps are arranged between groups of the blades. A sealing gasket (51) is fixedly arranged at a connection between the movable ring (53) and the valve body (1).

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