Marine double-eccentric electric butterfly valve

Abstract

The utility model discloses a marine double-eccentric electric butterfly valve which comprises an electric butterfly valve body and lubricating assemblies, and the lubricating assemblies are installed at the upper end and the lower end of the electric butterfly valve body and used for lubricating the mechanical joint of a valve shaft. A lubricating assembly is arranged on the marine double-eccentric electric butterfly valve, so that a liquid conveying pipe on the lubricating assembly conveys lubricating liquid in a lubricating liquid cavity in an oil tank into a lubricating cavity under conveying of a liquid conveying pump, and the lubricating liquid enters the joint of a valve shaft and a bearing from a plurality of lubricating holes formed in the upper portion of the lubricating cavity; lubricating liquid after lubrication enters an oil discharge cavity from an oil inlet hole and is discharged into a recovery cavity from an oil discharge pipe connected with the oil discharge cavity, so that the lubricating assembly lubricates the joint of the valve shaft and the bearing, and the joint of the valve shaft and the bearing is prevented from being abraded; and therefore, the double-eccentric electric butterfly valve is prevented from being jammed or leaked, and the opening and closing quality of the marine double-eccentric electric butterfly valve on a marine pipeline is improved.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically to a marine double eccentric electric butterfly valve. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve is a type of valve where the closing element is a disc that rotates around a valve shaft to open and close. Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media. In pipelines, it primarily functions as a shut-off and throttling device. The butterfly valve's opening and closing element is a disc-shaped plate that rotates around its own axis within the valve body to achieve opening, closing, or regulation. The marine double-eccentric flange electric butterfly valve is a type of butterfly valve.

[0003] Existing marine double eccentric electric butterfly valves (such as the marine double eccentric flange electric butterfly valve with application number 201820681641.1) effectively buffer the impact force on the valve stem by adding a protective ring to the valve stem, connecting the protective ring to the valve cover with a protective plate, and placing a rubber sleeve between the protective ring and the valve stem. This protects the valve stem from damage. However, these double eccentric electric butterfly valves lack a lubrication assembly at the connection between the valve shaft and the bearing. This lack of lubrication means that under frequent air pumping or when the medium contains impurities, wear can occur at the connection between the valve shaft and the bearing, leading to jamming or leakage, and affecting the opening and closing quality of marine pipelines. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a marine double eccentric electric butterfly valve to solve the technical problem that the existing marine double eccentric electric butterfly valves do not have a lubrication component, which causes wear at the connection between the valve shaft and the bearing when the double eccentric electric butterfly valve is frequently pumped or the medium contains impurities. This wear leads to jamming or leakage of the double eccentric electric butterfly valve, affecting the opening and closing quality of the marine double eccentric electric butterfly valve for marine pipelines.

[0005] According to the technical solution provided in the embodiments of this application, a marine double eccentric electric butterfly valve includes an electric butterfly valve body and a lubrication assembly. The lubrication assembly is installed at the upper and lower ends of the electric butterfly valve body and is used for lubrication of the mechanical connection of the valve shaft.

[0006] The lubrication assembly includes an oil tank, two oil supply pipes, and two oil discharge pipes. The two oil supply pipes and the two oil discharge pipes are respectively connected to lubrication tanks installed on the upper and lower parts of the electric butterfly valve body. Each oil supply pipe is connected to a lubrication fluid chamber on the oil tank, and each oil discharge pipe is connected to a recovery chamber, so that the oil tank, oil supply pipes, and oil discharge pipes on the lubrication assembly form a lubrication passage for the flow lubrication of the valve shaft on the electric butterfly valve body.

[0007] The lubrication box includes a box body and a sealing cover, which are fixed together by bolts. The box body is provided with a lubrication cavity, and a partition is provided between the lubrication cavity and the valve shaft. The partition is provided with a number of lubrication holes near its upper end, so that the lubricating fluid in the lubrication cavity can be evenly delivered to the mechanical connection of the valve shaft through the lubrication holes.

[0008] Furthermore, the lubrication cavity is connected to the oil supply pipe.

[0009] Furthermore, the bottom of the partition is provided with a number of oil inlet holes, and the number of oil inlet holes are connected to the oil drain chamber.

[0010] Furthermore, the oil drain chamber is connected to the oil drain pipe.

[0011] Furthermore, each of the oil supply pipes and the oil discharge pipes is equipped with a corresponding valve, and the valve is a solenoid valve.

[0012] Furthermore, the oil tank is installed on the side of the electric butterfly valve body, and an inlet pipe is installed at the top of the lubricating fluid chamber on the oil tank for replenishing the lubricating fluid in the lubricating fluid chamber, while a discharge port is installed at the bottom of the recovery chamber for discharging the waste lubricating fluid recovered in the recovery chamber.

[0013] In summary, the beneficial effects of this application are as follows: By installing a lubrication assembly on the marine double eccentric electric butterfly valve, the lubricating fluid in the lubrication chamber of the oil tank is introduced into the lubrication chamber by the delivery pipe on the lubrication assembly under the delivery of the delivery pump. The lubricating fluid then enters the connection between the valve shaft and the bearing through several lubrication holes set at the top of the lubrication chamber, thereby lubricating the connection between the valve shaft and the bearing. The lubricated fluid then enters the discharge chamber through the oil inlet hole and is discharged into the recovery chamber through the oil discharge pipe connected to the discharge chamber. This lubrication assembly lubricates the connection between the valve shaft and the bearing, thereby preventing wear at the connection between the valve shaft and the bearing, and preventing jamming or leakage of the double eccentric electric butterfly valve, thus improving the opening and closing quality of the marine double eccentric electric butterfly valve for marine pipelines. Attached Figure Description

[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the lubrication box of this utility model;

[0018] Figure 4 This is a side view schematic diagram of the internal structure of the lubrication box of this utility model.

[0019] The following are the labels in the diagram: Electric butterfly valve body-100, lubrication box-110, box body-111, lubrication chamber-1111, lubrication hole-1112, oil inlet-1113, oil outlet-1114, sealing cover-112, lubrication assembly-200, oil tank-210, oil delivery pipe-220, oil outlet pipe-230, valve-240. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] A marine double eccentric electric butterfly valve, its structure is as follows: Figures 1-4As shown, the device includes an electric butterfly valve body 100 and a lubrication assembly 200. The lubrication assembly 200 is installed at both ends of the electric butterfly valve body 100 to lubricate the mechanical connection of the valve shaft on the electric butterfly valve body 100, thereby preventing wear at the connection between the valve shaft and the bearing, and preventing jamming or leakage of the double eccentric electric butterfly valve, thus improving the opening and closing quality of the marine double eccentric electric butterfly valve for marine pipelines. The lubrication assembly 200 includes an oil tank 210, two oil supply pipes 220, and two oil drain pipes 230. The two oil supply pipes 220 and the two oil drain pipes 230 are respectively connected to the lubrication boxes 110 installed at the top and bottom of the electric butterfly valve body 100, and each oil supply pipe 220 is connected to the lubricating fluid chamber on the oil tank 210. Each oil drain pipe 230 is connected to the recovery chamber, so that the oil tank 210, oil supply pipe 220 and oil drain pipe 230 on the lubrication assembly 200 form a lubrication passage for the flow lubrication of the valve shaft on the electric butterfly valve body 100; the lubrication box 110 includes a box body 111 and a sealing cover 112, which are fixed by bolts, so that the lubrication chamber 1111 wraps around the valve shaft. The box body 111 is provided with the lubrication chamber 1111, and a partition is provided between the lubrication chamber 1111 and the valve shaft. Several lubrication holes 1112 are provided near the upper end of the partition, so that the lubricating fluid in the lubrication chamber 1111 is evenly delivered to the mechanical connection of the valve shaft through the several lubrication holes 1112, thereby lubricating the connection between the valve shaft and the bearing.

[0023] As a preferred embodiment, please refer to Figure 1 and Figure 2 The lubrication chamber 1111 is connected to the oil supply pipe 220, and each oil supply pipe 220 is equipped with a corresponding valve 240 so that the valve 240 is opened at regular intervals, thereby allowing the oil supply pipe 220 to input the lubricating fluid in the lubrication chamber into the lubrication chamber 1111.

[0024] As a preferred embodiment, please refer to Figure 2 and Figure 3 The bottom of the partition is provided with several oil inlet holes 1113, which are connected to the oil drain chamber 1114. The oil drain chamber 1114 is connected to the oil drain pipe 230. The oil drain pipe 230 is provided with a corresponding valve 240, which is a solenoid valve. The solenoid valve is activated periodically to open the oil drain pipe 230, thereby activating the pump body connected to the oil drain pipe 230 and pumping the lubricated lubricant into the recovery chamber for collection.

[0025] As a preferred embodiment, please refer to Figure 1 and Figure 2The oil tank 210 is installed on the side of the electric butterfly valve body 100. The top of the lubricating fluid chamber on the oil tank 210 is equipped with an inlet pipe for replenishing the lubricating fluid in the lubricating fluid chamber, and the bottom of the recovery chamber is equipped with a discharge port for discharging the waste lubricating fluid recovered in the recovery chamber.

[0026] The working principle of this utility model of a marine double eccentric electric butterfly valve is as follows:

[0027] When a marine double-eccentric electric butterfly valve is used to control the opening and closing of marine pipelines, the frequent opening and closing of the double-eccentric electric butterfly valve over a long period of time causes wear at the connection between the valve shaft and the bearing. Therefore, a lubrication assembly 200 is installed on the electric butterfly valve body 100. The lubrication assembly 200, with its delivery pipe, is pumped by a delivery pump to input the lubricating fluid from the lubrication chamber in the oil tank 210 into the lubrication chamber 1111, and then into the valve through several lubrication holes 1112 provided at the top of the lubrication chamber 1111. The lubrication system lubricates the connection between the valve shaft and the bearing. The lubricating fluid enters the drain chamber 1114 through the oil inlet 1113 and then drains into the recovery chamber through the drain pipe 230 connected to the drain chamber 1114. This allows the lubrication assembly 200 to periodically lubricate the connection between the valve shaft and the bearing, preventing wear at the connection and thus preventing jamming or leakage of the double eccentric electric butterfly valve. This improves the opening and closing quality of the marine double eccentric electric butterfly valve for marine pipelines.

[0028] The above description is merely a preferred embodiment of this application and an explanation of the technical principles and solutions employed. Furthermore, the scope of the utility model involved in this application is not limited to the specific combination of the above-described technical features, but should also cover other technical solutions formed by any combination of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A marine double eccentric electric butterfly valve, comprising an electric butterfly valve body (100) and a lubrication assembly (200), wherein the lubrication assembly (200) is installed at both ends of the electric butterfly valve body (100) and is used for lubrication of the mechanical connection of the valve shaft, characterized in that: The lubrication assembly (200) includes an oil tank (210), two oil supply pipes (220), and two oil discharge pipes (230). The two oil supply pipes (220) and the two oil discharge pipes (230) are respectively connected to lubrication boxes (110) installed on the upper and lower parts of the electric butterfly valve body (100). Each oil supply pipe (220) is connected to the lubricating fluid chamber on the oil tank (210), and each oil discharge pipe (230) is connected to the recovery chamber, so that the oil tank (210), the oil supply pipes (220), and the oil discharge pipes (230) on the lubrication assembly (200) form a lubrication passage for the flow lubrication of the valve shaft on the electric butterfly valve body (100). The lubrication box (110) includes a box body (111) and a sealing cover (112). The box body (111) and the sealing cover (112) are fixed by bolts. The box body (111) is provided with a lubrication cavity (1111). A partition is provided between the lubrication cavity (1111) and the valve shaft. The partition is provided with a number of lubrication holes (1112) near the upper end so that the lubricating fluid in the lubrication cavity (1111) can be evenly delivered to the mechanical connection of the valve shaft.

2. A double eccentric motor operated butterfly valve for marine use according to claim 1, characterized in that: The lubrication chamber (1111) is connected to the oil supply pipe (220).

3. A double eccentric motor operated butterfly valve for marine use according to claim 1, characterized in that: The bottom of the partition is provided with a number of oil inlet holes (1113), and the number of oil inlet holes (1113) are connected to the oil drain chamber (1114).

4. A double eccentric motor operated butterfly valve for marine use according to claim 3, characterized in that: The oil drain chamber (1114) is connected to the oil drain pipe (230).

5. The dual eccentric motor operated butterfly valve for marine use according to claim 1, characterized in that: Each of the oil supply pipes (220) and the oil discharge pipes (230) is equipped with a corresponding valve (240).

6. A double eccentric motor operated butterfly valve for marine use according to claim 1, characterized in that: The oil tank (210) is installed on the side of the electric butterfly valve body (100).

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