Labyrinth electric control valve

Abstract

The utility model discloses a labyrinth electric control valve which comprises a valve body, a central cavity is arranged in the valve body, one side of the valve body is communicated with a discharge port, a labyrinth lantern ring is arranged in the central cavity, a raft seat is arranged at the bottom of the central cavity, a water inlet cavity penetrating downwards is arranged at the bottom of the inner side of the valve body, and the water inlet cavity is communicated with the labyrinth lantern ring. The water inlet cavity is located under the central cavity and the raft base, and a feeding port communicated with one side of the water inlet cavity is formed in the inner side of the valve body. The servo motor drives the rotating shaft and the second water outlet disc to horizontally and slowly rotate, so that the second water outlet hole gradually shields or expands the first water outlet hole in the first water outlet disc in a covering mode, the larger the shielding amplitude is, the smaller the unit output quantity of water flow is, and on the contrary, it is still guaranteed that the water flow can be poured into the central cavity and the labyrinth lantern ring more evenly and dispersedly; erosive wear and cavitation caused by overlarge and unstable initial pressure to the labyrinth lantern ring are avoided, linear pressure regulation and control of pressure increasing and reducing are met, and the use and maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of governing valve, concretely is a kind of labyrinth electric governing valve. BACKGROUND

[0002] Labyrinth governing valve is a kind of multistage throttling governing valve, and it is named because of having a ring output channel in the form of labyrinth inside.It realizes flow control by different levels of throttling hole and sealing gasket, and can realize multistage flow regulation in a certain range.But in actual use process, when some liquid medium with high pressure is output, the traditional multistage flow regulation has been difficult to meet the detailed pressure reduction or pressure increase demand, does not have stable linear pressure regulation control, and there is certain use limitation;In the long-term operation process, especially in the use environment that needs to be adjusted frequently, it can also form scouring and cavitation erosion to labyrinth ring, increase the use and maintenance cost.Therefore, the present application provides a new improved labyrinth electric governing valve. SUMMARY

[0003] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments.In this section, as well as the abstract of the specification and the utility model name, some simplification or omission may be made to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplification or omission cannot be used to limit the scope of the utility model.

[0004] Therefore, the purpose of the utility model is to provide a kind of labyrinth electric governing valve, to solve the problem that the traditional labyrinth electric governing valve has been difficult to meet the detailed pressure reduction or pressure increase demand in the above background technology, does not have stable linear pressure regulation control, and there is certain use limitation;In the long-term operation process, especially in the use environment that needs to be adjusted frequently, it can also form scouring and cavitation erosion to labyrinth ring, increase the use and maintenance cost.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of labyrinth electric governing valve, it includes valve body, the valve body inside has central chamber, the valve body one side is communicated with discharge port, the central chamber inside has labyrinth ring, the central chamber bottom has raft seat, the valve body inboard bottom has the water inlet chamber that passes through downward, and water inlet chamber is located central chamber and raft seat directly below, the valve body inboard has the feed inlet that is connected with the side of water inlet chamber;

[0006] A water inlet chamber is arranged in the valve body, and a guide cylinder is arranged in the water inlet chamber, a first water outlet disc is fixed to the top of the guide cylinder, a plurality of water outlet holes are arranged on the first water outlet disc, a second water outlet disc is arranged in the guide cylinder and close to the lower part of the first water outlet disc, a plurality of water outlet holes are arranged on the second water outlet disc, a rotating driving assembly is arranged in the middle of the guide cylinder and drives the second water outlet disc to rotate, and a water inlet is arranged on one side of the guide cylinder and is in communication with the inner end of the feeding port.

[0007] As a preferred scheme of the labyrinth electric regulating valve, the valve cover is detachably arranged on the top of the valve body, and the driving motor is arranged on the top of the valve cover.

[0008] As a preferred scheme of the labyrinth electric regulating valve, the valve core is arranged in the labyrinth sleeve, the valve rod is arranged in the valve body and the valve cover and drives the valve core to move up and down, and the output end of the driving motor is connected with the upper end of the valve rod.

[0009] As a preferred scheme of the labyrinth electric regulating valve, the rotating driving assembly comprises a rotating shaft which is rotatably arranged on the bottom of the guide cylinder and is coaxially connected with the second water outlet disc at the upper end, a servo motor which is arranged on the bottom of the guide cylinder and drives the rotating shaft to rotate, and a shaft seal which is arranged at the connection between the rotating shaft and the guide cylinder.

[0010] As a preferred scheme of the labyrinth electric regulating valve, the upper part of the guide cylinder is provided with a ring-shaped sliding groove, and the second water outlet disc is provided with a ring-shaped sliding block which is matched with the ring-shaped sliding groove.

[0011] As a preferred scheme of the labyrinth electric regulating valve, the bottom of the guide cylinder is provided with a flange plate, a plurality of mounting holes are arranged on the flange plate, the bottom of the water inlet chamber is provided with a positioning groove which is matched with the flange plate, and the flange plate is fixedly connected with the positioning groove through the mounting holes and the arranged screw rods.

[0012] As a preferred scheme of the labyrinth electric regulating valve, the top of the flange plate is further provided with a sealing ring which abuts against the positioning groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the high-pressure liquid medium filled through the feed inlet can enter the inner cavity of the flow guide cylinder through the water inlet, when it is needed to adjust the pressure of the liquid entering the central chamber and the labyrinth ring and to ensure that the liquid is filled into the central chamber and the labyrinth ring more uniformly and linearly, the servo motor drives the rotating shaft and the second water disc to rotate horizontally and slowly, so that the water outlet holes two on the first water disc form a covering type of gradual shielding or expansion to the water outlet holes one, the greater the shielding range is, the smaller the water flow unit output is, and vice versa, which ensures that the water flow can be filled into the central chamber and the labyrinth ring more uniformly and dispersedly, avoids the erosion and cavitation of the labyrinth ring caused by the excessive and unstable initial pressure, meets the linear pressure regulation of pressure increase and decrease, and reduces the use and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic diagram of the utility model;

[0015] Figure 2 It is the flow guide cylinder assembly structure schematic diagram of the utility model;

[0016] Figure 3 It is the utility model Figure 1 Partial detail structure schematic diagram.

[0017] In the drawing: 100, valve body;110, central chamber;120, raft base;130, labyrinth ring;140, discharge port;150, water inlet chamber;151, positioning groove;160, valve core;161, valve rod;170, valve cover;180, feed inlet;200, flow guide cylinder;201, water inlet;202, annular sliding groove;210, first water disc;211, water outlet hole one;220, second water disc;221, water outlet hole two;222, annular sliding block;230, rotating drive assembly;231, rotating shaft;232, servo motor;233, shaft seal;240, flange plate;241, mounting hole;300, screw;400, sealing ring. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below with reference to the drawings.

[0019] Secondly, the utility model is described in detail in combination with the schematic diagram, in the detailed description of the utility model implementation, for the convenience of description, the sectional view of the device structure will be partially enlarged without the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the utility model herein. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear, the embodiments of the utility model will be described in further detail below in combination with the drawings.

[0021] Figures 1-3 The whole structure schematic diagram of the labyrinth electric regulating valve is shown, please refer to Figures 1-3 The labyrinth electric regulating valve of the embodiment comprises a valve body 100, the valve body 100 has a central chamber 110 inside, the valve body 100 is communicated with a discharge port 140 on one side, the central chamber 110 has a labyrinth sleeve ring 130 inside, the central chamber 110 has a raft seat 120 at the bottom, the valve body 100 has a water inlet chamber 150 that is downwardly penetrated at the bottom, and the water inlet chamber 150 is located directly below the central chamber 110 and the raft seat 120, the valve body 100 has a feed inlet 180 that is communicated with one side of the water inlet chamber 150 inside; the water inlet chamber 150 is matched with a flow guide cylinder 200 that is installed inside, the flow guide cylinder 200 is fixed with a first water outlet disc 210 at the top inside, a plurality of water outlet holes one 211 that are evenly distributed in a ring are formed on the disc body of the first water outlet disc 210, the flow guide cylinder 200 is axially rotationally installed with a second water outlet disc 220 that is close to the lower part of the first water outlet disc 210 inside, a plurality of water outlet holes two 221 that are evenly distributed in a ring are formed on the disc body of the second water outlet disc 220, the flow guide cylinder 200 is further provided with a rotating drive assembly 230 that drives the second water outlet disc 220 to reciprocatingly rotate at the central part, and the flow guide cylinder 200 further has a water inlet 201 that is directly communicated with the inner end of the feed inlet 180 on one side.

[0022] The top of the valve body 100 is also provided with a detachable valve cover 170, and the top of the valve cover 170 is provided with a driving motor. The inside of the valve body 100 and the valve cover 170 is also provided with a valve stem 161 which can drive the valve core 160 to move up and down, and the output end of the driving motor is connected with the upper end of the valve stem 161. The rotary driving assembly 230 comprises a rotating shaft 231 which is rotatably installed at the shaft center of the flow guide cylinder 200 and coaxially fixedly connected with the second water outlet disc 220 at the upper end, a servo motor 232 which is installed at the bottom of the flow guide cylinder 200 and used to drive the rotating shaft 231 to rotate, and a shaft seal 233 which is arranged at the connection between the rotating shaft 231 and the flow guide cylinder 200. Specifically, in this embodiment, when the high-pressure liquid medium filled through the feed inlet 180 can enter the inner cavity of the flow guide cylinder 200 through the water inlet 201, and when it is necessary to adjust the pressure of the liquid entering the central chamber 110 and the labyrinth sleeve 130, and to ensure that the liquid is more uniformly and linearly filled therein, the servo motor 232 drives the rotating shaft 231 and the second water outlet disc 220 to slowly rotate horizontally, so that the water outlet holes two 221 gradually cover or expand the water outlet holes one 211 on the first water outlet disc 210, the larger the shielding range is, the smaller the unit output of the water flow is, and vice versa, which ensures that the water flow can be more uniformly dispersed to fill the central chamber 110 and the labyrinth sleeve 130, avoids the initial pressure being too large and unstable, and avoids the scouring and cavitation of the labyrinth sleeve, meets the linear pressure regulation of pressure increase and decrease, and reduces the use and maintenance cost.

[0023] As a preferred, further, the inside of the upper part of the flow guide cylinder 200 is provided with a ring-shaped sliding groove 202, and the periphery of the second water outlet disc 220 is provided with a ring-shaped sliding block 222 matched with the ring-shaped sliding groove 202. Through the cooperation of the ring-shaped sliding block 222 and the ring-shaped sliding groove 202, the second water outlet disc 220 can rotate more stably, and the cooperation effect with the first water outlet disc 210 is ensured.

[0024] As a preferred, further, the bottom of the flow guide cylinder 200 is provided with a flange plate 240, a plurality of mounting holes 241 are arranged in a circle on the radial direction of the flange plate 240, the bottom of the water inlet chamber 150 is provided with a positioning groove 151 matched with the flange plate 240, and the flange plate 240 is fixedly connected with the positioning groove 151 through the mounting holes 241 and the arranged screw rod 300. It can be understood that through the cooperation of the flange plate 240 and the screw rod 300, the positioning and installation between the flow cylinder 200 and the valve body 100 can be facilitated, and the later disassembly and maintenance is also facilitated. Further, the top of the flange plate 240 is also provided with a sealing ring 400 abutting with the positioning groove 151. Through the arrangement of the sealing ring 400, the liquid medium entering the water inlet chamber 150 and the flow guide cylinder 200 can be prevented from overflowing through the edge gap, and the normal use of the regulating valve is ensured.

[0025] Although the utility model has been described above with reference to the embodiments, various modifications can be made thereto, and equivalent replacements can be made to the components thereof, without departing from the scope of the utility model. In particular, as long as there is no structural conflict, each feature in the embodiments disclosed by the utility model can be combined with each other in any manner, and the combinations are not exhaustively described in the specification merely for the purpose of omitting the length and saving the resources. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A labyrinth motorized control valve characterized by, The utility model provides a valve body (100) inside has central chamber (110), the valve body (100) one side is connected with the discharge port (140), the central chamber (110) inside has the labyrinth collar (130), the central chamber (110) bottom has raft seat (120), the valve body (100) inboard bottom has the water inlet chamber (150) that goes through downward, and water inlet chamber (150) is located central chamber (110) and raft seat (120) directly below, the valve body (100) inboard has with water inlet chamber (150) one side is connected with the feed inlet (180); The water inlet chamber (150) inboard matches the flow guide cylinder (200), the flow guide cylinder (200) inboard top is fixed with the first water outlet disc (210), a plurality of annularly uniformly distributed water outlet holes (211) are formed in the disc body of the first water outlet disc (210), the flow guide cylinder (200) inboard and close to the second water outlet disc (220) is rotationally installed at the lower position of the first water outlet disc (210), a plurality of annularly uniformly distributed water outlet holes (221) are formed in the disc body of the second water outlet disc (220), the flow guide cylinder (200) is still provided with a rotating drive assembly (230) for driving the second water outlet disc (220) to reciprocatingly rotate, and the flow guide cylinder (200) side is still provided with a water inlet (201) in direct communication with the inner end of the feed inlet (180).

2. A labyrinth motorised control valve according to claim 1, characterised in that: The valve body (100) top is further provided with a detachable valve cover (170), and the valve cover (170) top is provided with a driving motor.

3. A labyrinth motorized control valve according to claim 1, characterized in that: The valve body (100) and the valve cover (170) inboard are further provided with a valve rod (161) for driving the valve core (160) to move up and down, and the driving motor output end is connected with the upper end of the valve rod (161).

4. A labyrinth motorized control valve according to claim 1, characterized in that: The rotating drive assembly (230) comprises a rotating shaft (231) rotationally installed at the bottom axial center of the flow guide cylinder (200) and coaxially fixedly connected with the upper end of the second water outlet disc (220), a servo motor (232) installed at the bottom of the flow guide cylinder (200) and used for driving the rotating shaft (231) to rotate, and a shaft seal (233) arranged at the connection position of the rotating shaft (231) and the flow guide cylinder (200).

5. A labyrinth motorized control valve according to claim 1, characterized in that: The flow guide cylinder (200) inboard upper portion is provided with an annular sliding groove (202), and the second water outlet disc (220) peripheral side is provided with an annular sliding block (222) matched with the annular sliding groove (202).

6. A labyrinth motorized control valve according to claim 1, characterized in that: The flow guide cylinder (200) bottom outer peripheral side is provided with a flange plate (240), a plurality of mounting holes (241) are formed in a radial direction of the flange plate (240), the water inlet chamber (150) bottom peripheral side is provided with a positioning groove (151) matched with the flange plate (240), and the flange plate (240) is fixedly connected with the positioning groove (151) through the mounting holes (241) and the arranged screw rod (300).

7. A labyrinth motorised control valve according to claim 6, characterised in that: The flange plate (240) top is further provided with a sealing ring (400) abutting against the positioning groove (151).

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