High-pressure gate valve connector structure

Abstract

The utility model belongs to the technical field of high-pressure descaling pump outlet gate valves, and relates to a high-pressure gate valve connector structure which comprises a structure body, flanges are arranged at the top and the bottom of the structure body, a bearing chamber is arranged inside the upper end of the structure body, a key groove is connected to the bottom of the bearing chamber, and an annular groove is formed in the bottom of the inner wall of the key groove. A drainage hole and an oil injection port are formed in the two sides of the annular groove. The utility model has the effect of improving the sealing service life of the oil injection of the valve rod, simultaneously, once the sealing of the valve rod leaks, the pressure can be released through the drainage hole and discharged out of the valve body, the corrosion to the valve rod, the valve rod thread, the bearing, the actuating mechanism and the like is reduced, and the service life is further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to high pressure descaling pump export gate valve technical field, specifically related to a high pressure gate valve connecting body structure. BACKGROUND

[0002] The descaling system of the production line is the key equipment for product quality guarantee, the system pressure reaches above 22MPa, the outlet of each descaling pump is provided with an electric gate valve to control the connection state of the high pressure pump and the system, and whether the electric gate valve is normal or not directly relates to whether the system can normally operate, the electric gate valve is precisely assembled, the valve core sealing surface is sprayed with stellite hard alloy spraying material, is high in high pressure resistance, corrosion resistance and reliability, and belongs to the key component of the system.

[0003] The high pressure water leaking from the valve rod seal enters the driving mechanism inside through the tiny gap between the lower part of the connecting body and the valve rod and the upper bearing chamber, the water inflow is not large, but the high pressure water fills the internal space of the well-sealed rectification driving device and cannot be discharged, which can cause the electric valve driving mechanism and the wiring terminal chamber to be filled with water, the control signal state is disordered, and the electric valve cannot normally work.

[0004] Therefore, the high pressure gate valve connecting body structure is provided to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a high pressure gate valve connecting body structure, which solves the problems in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the technical scheme, and the utility model provides a high pressure gate valve connecting body structure, which comprises a structure main body, a bearing chamber is arranged in the upper end of the structure main body, a key groove is connected to the bottom of the bearing chamber, an annular groove is arranged on the inner wall of the bottom of the key groove, and a flow discharge hole and an oil injection port are arranged on the two sides of the annular groove.

[0007] Preferably, the top and bottom of the structure main body are provided with flanges, the flange sealing surface is stacked with a hard alloy layer, and the flange thickness is 1.2-1.5 times the wall thickness of the structure main body.

[0008] Preferably, the key groove is vertically arranged in the structure main body, and the key groove depth is 1 / 8-1 / 6 of the shaft diameter.

[0009] Preferably, the flow discharge hole is arranged in a circumferential distribution of 2-4 connecting annular grooves.

[0010] Preferably, the oil injection port is embedded with a copper alloy bushing, and the copper alloy bushing is in transition fit with a standard oil injection gun nozzle.

[0011] Preferably, the drain hole has a diameter of 3-5mm, the axis of the drain hole forms an angle of 30-45° with the horizontal plane, and the inner wall of the drain hole is plated with a chromium layer of 0.05-0.1mm.

[0012] Compared with the prior art, the utility model has the advantages and positive effects that,

[0013] The utility model has the effect of improving the sealing service life of the valve rod, and once the valve rod seal leaks, the pressure can be released through the drain hole and discharged outside the valve body, reducing the corrosion of the valve rod, valve rod thread, bearing, actuator and the like, and further improving the service life. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be a simple introduction to the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0015] Figure 1 It is a kind of high-pressure gate valve connecting body structure's structural schematic diagram;

[0016] In the above figure, 1, drain hole;2, oil injection port;3, flange;4, bearing chamber;5, annular groove;6, keyway;7, structural main body. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the above-mentioned purposes, features and advantages of the utility model, the following will be further illustrated by the drawings and embodiments of the utility model. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from the description, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0019] Embodiment 1, as Figure 1 Shown, a kind of high-pressure gate valve connecting body structure, including structural main body 7, the structural main body 7 upper end inside is provided with bearing chamber 4, bearing chamber 4 is used to install and support the bearing of valve rod, ensure the smooth rotation and accurate positioning of valve rod.

[0020] The bottom of the bearing chamber 4 is connected with a key groove 6, which plays a communication role. The inner wall of the bottom of the key groove 6 is provided with an annular groove 5. The annular groove 5 is arranged on the inner wall of the bottom of the key groove 6. The two sides of the annular groove 5 are provided with a flow hole 1 and an oil injection port 2. The design of the flow hole 1 enables the high-pressure water to be quickly discharged, reducing the corrosion of the internal components. The oil injection port 2 facilitates the injection of lubricating oil. The key groove 6 and the annular groove 5 are used to guide the leaked high-pressure water, which is discharged outside the valve body through the flow hole 1, effectively preventing the accumulation of high-pressure water inside the driving mechanism, reducing the corrosion of the valve stem, bearings and other components, and improving the reliability of the overall equipment.

[0021] The structural body 7 is the core part of the entire high-pressure gate valve connecting body, which carries and connects all other components. The structural body 7 is internally designed with a bearing chamber 4, a key groove 6, an annular groove 5 and other structures, which ensure the stable operation and sealing performance of the valve stem. The structural design is reasonable, which can effectively withstand the stress under high-pressure environment, ensuring the stability and durability of the overall structure.

[0022] Now let's talk about the specific design of the above key components:

[0023] The top and bottom of the structural body 7 are provided with flanges 3. The sealing surface of the flange 3 is stacked with a hard alloy layer. The thickness of the flange 3 is 1.2-1.5 times the wall thickness of the structural body 7. The hard alloy layer improves the wear resistance and corrosion resistance of the sealing surface of the flange 3, ensuring the long-term stability of the sealing performance under high-pressure environment. Increasing the thickness of the flange 3 is to enhance its structural strength, so that it can withstand higher pressure and stress, preventing deformation or leakage.

[0024] The key groove 6 is vertically arranged inside the structural body 7. The depth of the key groove 6 is 1 / 8-1 / 6 of the shaft diameter. The suitable key groove 6 aspect conducts pressure relief and flow, while avoiding stress concentration problems caused by the opening of the key groove 6 being too deep.

[0025] The flow hole 1 is arranged as 2-4 circularly distributed with the annular groove 5. The circular distribution design of multiple flow holes 1 ensures that the leaked high-pressure water can be uniformly and quickly discharged, avoiding local accumulation.

[0026] The oil injection port 2 is embedded with a copper alloy bushing, which forms a transition fit with the standard oil injection nozzle. The design of the copper alloy bushing improves the wear resistance and sealing performance of the oil injection port 2, ensuring smooth and reliable oil injection process.

[0027] The diameter of the flow hole 1 is 3-5 mm. The axis of the flow hole 1 forms an angle of 30°-45° with the horizontal plane. The inner wall of the flow hole 1 is plated with a chromium layer with a thickness of 0.05-0.1 mm. The diameter and angle design of the flow hole 1 optimizes the drainage efficiency, while preventing debris from blocking. The inner wall plated with chromium layer improves the corrosion resistance and wear resistance of the flow hole 1, prolonging the service life.

[0028] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein, and the contents not described in detail in the description belong to the prior art known by the professional technical personnel.

[0029] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms, and any skilled person in the art can change or modify the equivalent embodiments applied to other fields by using the disclosed technical content, but any simple modification, equivalent change and modification made on the basis of the technical essence of the utility model to the above embodiments still belongs to the protection scope of the technical scheme of the utility model.

Claims

1. A high-pressure gate valve connection structure, characterized in that, The structure includes a main body, with a bearing chamber inside the upper end of the main body. A keyway is connected to the bottom of the bearing chamber. An annular groove is provided on the inner wall of the bottom of the keyway. Drain holes and oil inlets are provided on both sides of the annular groove.

2. The high-pressure gate valve connection structure according to claim 1, characterized in that, Flanges are provided at the top and bottom of the main structure, and a hard alloy layer is welded onto the sealing surface of the flanges. The thickness of the flanges is 1.2-1.5 times the wall thickness of the main structure.

3. The high-pressure gate valve connection structure according to claim 1, characterized in that, The keyway is vertically arranged inside the main body of the structure, and the depth of the keyway is 1 / 8 to 1 / 6 of the shaft diameter.

4. The high-pressure gate valve connection structure according to claim 1, characterized in that, The drain hole is configured with 2-4 connecting annular grooves distributed circumferentially.

5. The high-pressure gate valve connection structure according to claim 1, characterized in that, The oil filling port is fitted with a copper alloy bushing, which forms a transition fit with the standard oil filling nozzle.

6. The high-pressure gate valve connection structure according to claim 4, characterized in that, The diameter of the drain hole is 3-5mm, the axis of the drain hole forms an angle of 30°-45° with the horizontal plane, and the inner wall of the drain hole is plated with a 0.05-0.1mm thick chromium layer.

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