Self-operated regulating valve capable of preventing valve rod from being abraded

Abstract

The self-operated regulating valve capable of preventing the valve rod from being abraded comprises a valve body, a connecting disc is fixedly installed on the top of the valve body in a communicated mode, and a filling box is fixedly connected to the top of the connecting disc in a bolted mode. By means of the oil inlet hole and the oil outlet hole which are formed in the connecting disc and the filling box together, the effects of adding and replacing lubricating oil are achieved, through the connection relation between the sealing shaft and the filling box, the sealing effect of the sealing shaft is improved, and the sealing effect of the sealing shaft is improved. By means of the connection relation among the sealing shaft, the ball and the valve rod, the valve rod moves up and down to drive the ball to rotate in the sealing bearing, so that the lubricating oil is driven to circularly flow in the sealing shaft and the oil storage groove, and the effect of adding the lubricating oil to the outer cambered surface of the valve rod is achieved. And the abrasion of the valve rod is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to self -operated governing valve technical field, concretely relates to a self -operated governing valve of preventing valve rod abrasion. BACKGROUND

[0002] Self -operated governing valve is a kind of governing valve without external energy, realizes automatic regulation by the change of pressure, temperature, flow etc.

[0003] The existing self -operated governing moves up and down by actuator and elastic control valve stem, and the valve stem drives the valve core to move up and down, so as to realize the stability of medium delivery, the frequent movement of valve stem increases the friction between valve stem and filling function, and the valve stem is easily damaged due to abrasion, resulting in the reduction of service life of regulating valve.

[0004] According to the self -operated governing valve of preventing valve rod abrasion provided in the application number CN222142103U, the connecting cover is inserted into the middle part of the connecting cover, the upper wall of the connecting cover is provided with a through hole, the inner wall of the through hole is provided with a sealing ring, the inside of the valve stem is provided with an oil channel, the side wall of the valve stem is provided with an oil inlet hole and an oil outlet hole, one end of the valve stem inside the connecting cover is provided with a piston block, the inner wall of the connecting cover is provided with a storage groove, and the piston block is attached to the side wall of the storage groove.

[0005] According to the above-mentioned self -operated governing valve of preventing valve rod abrasion, the oil channel is arranged in the valve stem, and the oil inlet hole and the oil outlet hole are arranged on the outer side wall of the valve stem, so as to realize the effect of adding lubricating oil to the valve stem, but the oil channel arranged in the valve stem will affect the overall strength of the valve stem, and the oil outlet hole is arranged at a high position, so that the waste oil cannot be discharged efficiently, therefore we need to put forward a kind of self -operated governing valve of preventing valve rod abrasion. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a kind of self -operated governing valve of preventing valve rod abrasion, the oil inlet hole and the oil outlet hole are arranged in the connecting disc and the filling function, the addition and replacement of lubricating oil are facilitated, the inside of the filling function is formed storage groove by the setting of sealing shaft, lubricating oil is effectively stored, the connection between sealing shaft, ball and valve stem is utilized, the valve stem moves up and down, drives ball to rotate in sealing bearing, thereby driving lubricating oil to circulate in the inside of sealing shaft and storage groove, so as to realize the effect of adding lubricating oil to the outer camber of valve stem, reduce the abrasion of valve stem, to solve the problems raised in the above background.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a self -operated governing valve of preventing valve rod wear, including valve body, the top fixed communication of valve body installs the connecting disc, the top of connecting disc is provided with the filling function of bolted, the bottom of filling function inserts the inside of connecting disc, the lateral wall of filling function and the lateral wall of connecting disc are pasted, and the lateral wall of filling function and connecting disc is commonly provided with a group of oil inlet hole and a group of oil discharge hole, the middle fixed mounting of the inner chamber of filling function has sealing shaft, the outer cam surface of sealing shaft and the inner lateral wall of filling function form the oil tank, the inside communication of oil inlet hole and oil discharge hole one end is all in the oil tank, the wall thickness of sealing shaft is embeddedly rotatably installed a plurality of groups of ball, the middle of filling function and sealing shaft is inserted and is installed with valve rod, the lateral outer cam surface of a plurality of groups of ball and the inside communication of oil tank, the other side outer cam surface of a plurality of groups of ball and valve rod outer cam surface are pasted.

[0008] Preferably, the both ends of the valve body are communicated with a group of butt flanges, and the bottom of the valve body is fixedly installed with a mounting base.

[0009] Preferably, the wall thickness of the both ends of the filling function is embeddedly installed with a group of sealing rings, and the sealing rings are sleeved on the outer cam surface of the valve rod.

[0010] Preferably, the bottom end of the valve rod extends into the inside of the valve body, and the bottom end of the valve rod is fixedly bolted with a valve core, and the inside of the valve body is fixedly installed with a valve seat.

[0011] Preferably, the upper outer cam surface of the valve rod is fixedly sleeved with a limiting seat, the middle outer cam surface of the valve rod is movably sleeved with a spring, the top of the spring is fixedly sleeved with the bottom of the limiting seat, and the bottom of the spring is fixedly welded with the top of the filling function.

[0012] Preferably, the top of the valve rod is connected with an execution box, and the top of the execution box is provided with a connecting port.

[0013] Preferably, the bottom of the execution box is fixedly installed with two groups of supporting rods, and the bottom of the two groups of supporting rods is fixedly installed on the top of the filling function.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model discloses the oil inlet hole and oil discharge hole of connecting disc and filling function are commonly provided, realizes the effect of lubricating oil addition and replacement, and through the connecting relationship between sealing shaft and filling function, the inside of filling function forms the oil tank, realizes the effect of storing lubricating oil, utilizes the connecting relationship between sealing shaft, ball and valve rod, and the valve rod moves up and down, drives the rotation of ball in the sealing bearing, thereby driving the circulation of lubricating oil in the inside of sealing shaft and the inside of oil tank, thereby realizing the effect of adding lubricating oil to the outer cam surface of valve rod, and reducing the wear of valve rod.

[0016] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the valve body internal structure schematic diagram of the utility model;

[0019] Figure 3 It is the cross section front view structure schematic diagram of the utility model;

[0020] Figure 4 It is the ball installation structure schematic diagram of the utility model;

[0021] Figure 5 It is the valve core installation structure schematic diagram of the utility model.

[0022] In the drawing: 1, valve body;2, connecting disc;3, butt flange;4, installation base;5, valve seat;6, filling function;7, sealing ring;8, oil inlet hole;9, oil discharge hole;10, sealing shaft;11, ball;12, oil storage tank;13, valve stem;14, valve core;15, limit seat;16, spring;17, execution box;18, connecting port;19, support rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0024] Please refer to Figures 1-5The utility model provides a kind of self-operated control valve of preventing valve stem abrasion, including valve body 1, the top of valve body 1 is fixedly connected and installed with connecting disc 2, the top of connecting disc 2 is fixedly bolted and has filling function 6;The bottom of filling function 6 is inserted into the inside of connecting disc 2, the lateral wall of filling function 6 is attached with the lateral wall of connecting disc 2, and the lateral wall of filling function 6 and connecting disc 2 is jointly penetrated and is equipped with a group of oil inlet hole 8 and a group of oil outlet hole 9, the inner chamber of filling function 6 middle is fixedly installed with sealing shaft 10, the outer cam surface of sealing shaft 10 forms oil reservoir 12 with the inner lateral wall of filling function 6, one end of oil inlet hole 8 and oil outlet hole 9 is all communicated in the inside of oil reservoir 12, the wall thickness of sealing shaft 10 is rotatably installed with several groups of ball 11 by embedding, valve stem 13 is rotatably installed in the middle of filling function 6 and sealing shaft 10, the outer cam surface of one side of several groups of ball 11 is communicated with the inside of oil reservoir 12, the outer cam surface of the other side of several groups of ball 11 is attached with the outer cam surface of valve stem 13.

[0025] When using, the oil inlet hole 8 and the oil outlet hole 9 are opened in the connecting disc 2 and the filling function 6, the effect of adding and replacing lubricating oil is realized, and the connection between the sealing shaft 10 and the filling function 6 forms the oil reservoir 12 in the inside of the filling function 6, the effect of storing lubricating oil is realized, and the connection between the sealing shaft 10, the ball 11 and the valve stem 13 is used, the valve stem 13 moves up and down, drives the ball 11 to rotate in the sealing shaft 10, and then drives the lubricating oil to circulate in the sealing shaft 10 and the oil reservoir 12, so as to realize the effect of adding lubricating oil to the outer cam surface of the valve stem 13, and reduce the abrasion of the valve stem 13.

[0026] The two ends of the valve body 1 are communicated with a group of butt flanges 3, and the bottom of the valve body 1 is fixedly installed with a mounting base 4, the butt flanges 3 are installed at both ends, which is convenient for connecting with other pipe fittings, and the mounting base 4 is used for convenient installation of the self-operated control valve.

[0027] A group of sealing rings 7 are embeddedly installed at the wall thickness of both ends of the filling function 6, the sealing ring 7 is sleeved on the outer cam surface of the valve stem 13, the connection between the filling function 6, the sealing ring 7 and the valve stem 13 realizes the effect of effectively improving the sealing performance of the self-operated control valve, and effectively avoids the overflow of lubricating oil.

[0028] The bottom end of the valve stem 13 extends into the inside of the valve body 1, and the bottom end of the valve stem 13 is fixedly bolted with a valve core 14, and the inside of the valve body 1 is fixedly installed with a valve seat 5, the connection between the valve body 1, the valve stem 13, the valve core 14 and the valve seat 5 drives the valve core 14 to move up and down, so as to realize the effect of adjusting the gap between the valve core 14 and the valve seat 5.

[0029] The upper outer arc surface of the valve stem 13 is fixedly sleeved with a limiting seat 15, the middle outer arc surface of the valve stem 13 is movably sleeved with a spring 16, the top of the spring 16 is fixedly sleeved at the bottom of the limiting seat 15, the bottom of the spring 16 is fixedly welded at the top of the filling funnel 6, through the connecting relationship among the valve stem 13, the limiting seat 15, the spring 16 and the filling funnel 6, when the actuating box 17 drives the valve stem 13 to move downwards, the valve stem 13 drives the limiting seat 15 to move downwards, the limiting seat 15 drives the spring 16 to compress, when the actuating box 17 reduces the pressure on the valve stem 13, the spring 16 drives the valve stem 13 to move upwards, so as to realize the principle of self-operated work of the regulating valve.

[0030] The top of the valve stem 13 is connected with the actuating box 17, the top of the actuating box 17 is provided with a connecting port 18, through the setting of the actuating box 17, when the actuating box 17 receives the pressure difference of the existence of the medium, the setting of the spring 16 is matched, the effect of automatically controlling the up-down movement of the valve stem 13 is realized, the connecting port 18 is used for connecting a pressure measuring pipe.

[0031] The bottom of the actuating box 17 is fixedly provided with two groups of supporting rods 19, the bottom of the two groups of supporting rods 19 is fixedly installed at the top of the filling funnel 6, through the setting of the supporting rods 19, the effect of fixedly installing the actuating box 17 is realized.

[0032] Specifically, when in use, through the two groups of butt flanges 3 and the mounting base 4, the self-operated regulating valve is installed on a specific equipment, then the medium behind the valve is connected to the connecting port 18 through a pipeline, so as to realize the effect of installing the self-operated regulating valve, the lubricating oil is replaced through the oil inlet hole 8 and the oil discharge hole 9 at regular time, through the connecting relationship among the sealing shaft 10, the ball 11 and the valve stem 13, the valve stem 13 moves up and down, drives the ball 11 to rotate in the sealing shaft 10, so as to drive the lubricating oil to circulate in the sealing shaft 10 and the oil storage groove 12, so as to realize the effect of adding the lubricating oil to the outer arc surface of the valve stem 13, reduces the abrasion of the valve stem 13, through the setting of the above-mentioned device, the use efficiency of the self-operated regulating valve is improved.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A self-operated regulating valve for preventing valve stem wear, characterized in that: The device includes a valve body (1), a connecting plate (2) is fixedly installed on the top of the valve body (1), and a filling box (6) is fixedly bolted to the top of the connecting plate (2); the bottom of the filling box (6) is inserted into the interior of the connecting plate (2), the side wall of the filling box (6) is in contact with the side wall of the connecting plate (2), and the side walls of the filling box (6) and the connecting plate (2) are provided with a set of oil inlet holes (8) and a set of oil outlet holes (9) through the device. A sealing shaft (10) is fixedly installed in the middle of the inner cavity of the filling box (6). The outer arc surface of the sealing shaft (10) and the inner side wall of the filling box (6) form an oil storage groove (12). One end of the oil inlet (8) and the oil outlet (9) are connected to the inside of the oil storage groove (12). Several sets of balls (11) are embedded and rotatably installed in the wall thickness of the sealing shaft (10). A valve stem (13) is inserted through the middle of the filling box (6) and the sealing shaft (10). One side of the outer arc surface of the several sets of balls (11) is connected to the inside of the oil storage groove (12), and the other side of the outer arc surface of the several sets of balls (11) is in contact with the outer arc surface of the valve stem (13).

2. The self-operated regulating valve for preventing valve stem wear according to claim 1, characterized in that: Both ends of the valve body (1) are connected to a set of docking flanges (3), and the bottom of the valve body (1) is fixedly installed with a mounting base (4).

3. A self-operated regulating valve for preventing valve stem wear according to claim 1, characterized in that: A set of sealing rings (7) are embedded in the wall thickness at both ends of the filling box (6), and the sealing rings (7) are sleeved on the outer arc surface of the valve stem (13).

4. A self-operated regulating valve for preventing valve stem wear according to claim 1, characterized in that: The bottom end of the valve stem (13) extends into the interior of the valve body (1), and the bottom end of the valve stem (13) is fixedly bolted with a valve core (14), and a valve seat (5) is fixedly installed inside the valve body (1).

5. A self-operated regulating valve for preventing valve stem wear according to claim 1, characterized in that: The upper outer arc surface of the valve stem (13) is fixedly fitted with a limiting seat (15), and the middle outer arc surface of the valve stem (13) is movably fitted with a spring (16). The top of the spring (16) is fixedly fitted to the bottom of the limiting seat (15), and the bottom of the spring (16) is fixedly welded to the top of the filling box (6).

6. A self-operated regulating valve for preventing valve stem wear according to claim 1, characterized in that: The top of the valve stem (13) is connected to an actuator box (17), and the top of the actuator box (17) is provided with a connection port (18).

7. A self-operated regulating valve for preventing valve stem wear according to claim 6, characterized in that: Two sets of support rods (19) are fixedly installed at the bottom of the execution box (17), and the bottom of the two sets of support rods (19) are fixedly installed at the top of the filling box (6).

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