Ship stop check valve

Abstract

The utility model discloses a ship stop check valve which comprises a valve body, a valve element is vertically installed at a valve port in the valve body, and a contact plate is arranged at the valve port and used for sealing the valve port. The valve element comprises a fixing plate, a sealing plate and a first sealing piece, the top of the fixing plate is movably connected with the valve rod through a movable rod, the sealing plate is installed at the bottom of the fixing plate through a plurality of bolts, and the first sealing piece is installed at the joint of the outer side of the sealing plate and the valve port. Therefore, the original integrated structure of the valve core is converted into a split structure, and the replacement of the valve core is facilitated. According to the ship stop check valve, the valve element is arranged to be of the split type structure, so that sealing parts, prone to abrasion and corrosion, at the valve element and the valve port are convenient to disassemble, abrasion parts at the valve element and the valve port are replaced in time, the practicability of the ship stop check valve is improved, the service life of the ship stop check valve is prolonged, and the overall replacement cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a ship stop check valve. BACKGROUND

[0002] The particularity and diversity of ships are more and more various, and various practical designs in the ship manufacturing process are particularly important. The stop check valve is based on the principle of gravity. When the valve is closed, liquid does not flow. When the valve is open, continuous liquid flows from the inlet. Because the liquid pressure valve core is in the open state, liquid can flow out of the outlet. If there is no pressure at the inlet end, the valve core falls due to gravity and is in the check state. Because the stop check valve can save installation cost and save installation space, the stop check valve is more and more widely used in the shipbuilding industry.

[0003] The existing ship stop check valve (application number 202120970827.0, a ship stop check valve) sets the traditional horizontally installed ship stop check valve into a vertical shape, so that the ship stop check valve can be used for vertical pipelines. However, the sealing assembly on the existing horizontal ship stop check valve is of an integral structure and is not set into a split structure, so that when the valve core and the valve port on the stop check valve are worn or corroded, the entire stop check valve needs to be replaced, affecting the practicality of the ship stop check valve. UTILITY MODEL CONTENTS

[0004] In view of the above defects or deficiencies in the prior art, it is desirable to provide a ship stop check valve to solve the technical problem that the sealing assembly of the existing ship stop check valve is of an integral structure and is not set into a split structure, so that when the valve core and the valve port on the stop check valve are worn or corroded, the entire stop check valve needs to be replaced, affecting the practicality of the ship stop check valve.

[0005] According to the technical scheme provided by the embodiment of the present application, a ship stop check valve includes a valve body, a valve core is vertically installed at a valve port inside the valve body, and a contact plate is provided at the valve port for sealing the valve port.

[0006] The valve core includes a fixed plate, a sealing plate and a first sealing element. The top of the fixed plate is movably connected to the valve stem through a moving rod. The sealing plate is installed at the bottom of the fixed plate through a plurality of bolts. The outer side of the sealing plate is connected to the valve port, and the first sealing element is installed at the connection between the outer side of the sealing plate and the valve port. The valve core is converted from an original integral structure to a split structure, which facilitates the replacement of the valve core.

[0007] The contact plate is installed at the valve port by bolts, a sealing port is arranged on the contact plate, a corresponding second sealing element is installed at the sealing port, the second sealing element abuts against the first sealing element, and the valve port is sealed.

[0008] Further, the first sealing element and the second sealing element are made of rubber material, and the first sealing element and the second sealing element are both in a conical ring structure.

[0009] Further, a plurality of sealing strips are arranged on the first sealing element in a spaced manner from top to bottom along the outer side, and a plurality of sealing grooves are arranged in a parallel and spaced manner from top to bottom on the inner side of the second sealing element, and each sealing strip is positioned and clamped in the corresponding sealing groove.

[0010] Further, the contact plate is in a ring structure, and the contact surface of the sealing port is in an arc structure.

[0011] Further, the outer side of the sealing plate is in a conical structure.

[0012] Further, a positioning cylinder is installed in the inner side of a sealing cover on the valve body and is sleeved on the outer side of the valve rod, and is used for positioning the upward moving position of the valve core.

[0013] Further, a valve sleeve is arranged at the bottom of the valve rod, a moving rod is movably installed in the valve sleeve and moves up and down along the valve sleeve, an elastic element is sleeved on the moving rod, and the elastic element elastically supports the movement of the moving rod in the valve sleeve.

[0014] Therefore, the application has the following beneficial effects:

[0015] I. By setting the valve core in a split structure, the sealing part of the valve core and the valve port which is prone to wear and corrosion can be easily disassembled, and the worn parts of the valve core and the valve port can be replaced in time, thereby improving the practicality and service life of the marine stop check valve and reducing the overall replacement cost.

[0016] II. By setting the sealing surface in an arc structure and arranging corresponding first and second sealing elements on the sealing surfaces of the valve core and the contact plate, the sealing performance of the sealing surface is improved during the sealing process of the valve core and the contact plate, thereby improving the sealing performance of the marine stop check valve. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the application.

[0019] Figure 2 It is the side view internal structure schematic view of the utility model;

[0020] Figure 3 It is the valve core decomposition structure schematic view of the utility model;

[0021] Figure 4 It is Figure 3 The enlarged view of A in the middle.

[0022] Mark in the figure: valve body-100, valve port-110, contact plate-120, second sealing element-121, sealing groove-122, valve core-200, fixed plate-210, sealing plate-220, first sealing element-230, sealing strip-231, moving rod-240, elastic element-250, valve rod-300, valve sleeve-310, positioning cylinder-400, sealing cover-500. DETAILED DESCRIPTION

[0023] The application will be described in further detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for convenience of description.

[0024] 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 present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] A ship stop check valve, its structure as Figures 1-4As shown, including the valve body 100, the valve core 200 is vertically installed in the valve port 110 inside the valve body 100, and the valve port 110 is provided with a contact plate 120, so that the valve core 200 abuts against the contact plate 120, thereby sealing the valve port 110; the valve core 200 comprises a fixed plate 210, a sealing plate 220 and a first sealing element 230, the top of the fixed plate 210 is movably connected with the valve rod 300 through a moving rod 240, and the sealing plate 220 is installed on the bottom of the fixed plate 210 through a plurality of bolts, and the outer side of the sealing plate 220 is provided with the first sealing element 230 at the connection with the valve port, by converting the original integral structure into a split structure, the place where the valve core 200 and the valve port 110 contact is easy to be worn or corroded, so that the overall replacement cost is reduced; the contact plate 120 is installed on the valve port 110 through bolts, replacing the original integral structure, so that the valve port 110 is easy to replace when the ship stop check valve is worn or corroded, and the sealing port is provided on the contact plate 120, the second clamping groove is provided at the sealing port, the corresponding second sealing element 121 is installed in the second clamping groove, and the second sealing element 121 abuts against the first sealing element 230 installed in the first clamping groove of the sealing plate 220, so that the first sealing element 230 and the second sealing element abut against each other, thereby sealing the valve port 110, thereby improving the sealing quality of the ship stop check valve, and by setting the first sealing element 230 and the second sealing element 121, the first sealing element 230 and the second sealing element 121 are easy to replace in time when they are worn or corroded, thereby improving the practicability of the ship stop check valve.

[0026] As a preferred embodiment, please refer to Figure 3 and Figure 4 , the first sealing element 230 and the second sealing element 121 are made of rubber material, and the first sealing element 230 and the second sealing element 121 are both in the form of a conical ring structure, which is used to increase the sealing surface of the first sealing element 230 and the second sealing element 121, and a plurality of sealing strips 231 are arranged on the first sealing element 230 from top to bottom along the outer side, and a plurality of sealing grooves 122 are arranged on the inner side of the second sealing element 121 from top to bottom in parallel and at intervals, and each sealing strip 231 is positioned and clamped in the corresponding sealing groove 122, thereby improving the sealing performance of the abutment sealing of the first sealing element 230 and the second sealing element 121.

[0027] As a preferred embodiment, please refer to Figure 3 and Figure 4 , the contact plate 120 is in the form of a ring structure, and the contact surface of the sealing port is in the form of an arc structure, and the outer side of the sealing plate 220 is in the form of a conical structure, so that after the valve core 200 and the contact plate 120 are sealed and abutted, the arc structure contact surface improves the sealing performance.

[0028] As a preferred embodiment, please refer to Figure 1 andFigure 2 The positioning cylinder 400 is installed on the inner top of the sealing cover 500 on the valve body 100 and sleeved on the outer side of the valve stem 300. This allows the positioning cylinder 400 to abut against the top of the valve sleeve 310 during the upward movement of the valve stem 300 by rotating the handwheel, thereby positioning the upward position of the valve stem 300 and the upward position of the valve core 200. This prevents the valve stem 300 from moving beyond the limit, thus preventing the valve core 200 from stopping the flow of the medium.

[0029] As a preferred embodiment, please refer to Figure 1 and Figure 2 A valve sleeve 310 is provided at the bottom of the valve stem 300, and a movable rod 240 is movably installed inside the valve sleeve 310 and moves up and down along the valve sleeve 310. An elastic element 250 is sleeved on the movable rod 240. The elastic element 250 is a metal spring. The elastic element 250 provides elastic support for the movement of the movable rod 240 inside the valve sleeve 310. When the valve stem 300 rotates and moves upward, the valve port 110 on the valve body 100 is sealed by the gravity of the valve core 200. The medium at the inlet pushes the movable rod 240 connected to the valve core 200 to move upward along the valve sleeve 310, thereby opening the valve port 110. When the flow rate at the inlet is less than the flow rate and pressure at the outlet, the medium flowing back at the outlet and the gravity of the valve core 200 itself push the valve core 200 downward, thereby sealing the valve port 110.

[0030] The working principle of this utility model's ship shut-off check valve is as follows:

[0031] The ship stop check valve is used for stopping the check of the pipeline of the ship, the traditional horizontal type stop check valve, the valve core 200 is an integral structure, the connection between the valve core 200 and the valve body 100 is easy to wear, the replacement cost of the integral structure valve core 200 is higher, the valve core 200 is set as a split structure, so that the sealing plate 220 on the valve core 200 is installed on the fixed plate 210 through bolts, and the detachable contact plate 120 is arranged at the valve port 110, so that the sealing part of the ship stop check valve is easy to wear and corrode, and the valve core 200 and the valve port 110 are easy to replace, so that the practicality and service life of the ship stop check valve are improved, and the overall replacement cost is reduced; the movable rod 240 installed at the top of the fixed plate 210 is movably installed in the valve sleeve 310 on the valve rod 300, so that when the valve rod 300 is screwed downward, the movable rod 240 at the bottom of the valve core 200 is driven to move downward, and the valve core 200 is in abutment and sealing with the contact plate 120 at the valve port 110, the sealing surface of the valve core 200 and the contact plate 120 is an arc structure, which is used for increasing the contact surface of the sealing surface, and the corresponding first sealing element 230 and second sealing element 121 are arranged on the sealing surface of the valve core 200 and the contact plate 120, so that the first sealing element 230 and the second sealing element 121 are in abutment during the sealing process of the valve core 200 and the contact plate 120, and the plurality of sealing strips 231 on the first sealing element 230 are positioned and clamped in the corresponding plurality of sealing grooves 122 on the second sealing element 121, so as to increase the sealing performance of the sealing surface, thereby improving the sealing performance of the ship stop check valve, when the stop check valve needs to be opened, the valve rod 300 is rotated, and then the valve rod 300 is screwed upward, so that the valve rod 300 releases the locking of the valve core 200, so that the water flowing in the water inlet pushes the valve core 200 to move upward, and then enters the water outlet pipe, and the positioning cylinder 400 is arranged at the connection between the inner side of the sealing cover 500 and the valve rod 300, so as to limit the upward position of the valve rod 300, thereby improving the positioning and moving accuracy of the valve rod 300, and not affecting the check of the valve core 200.

[0032] The above description is only the preferred embodiment of the application and the description of the technical principle and other schemes. Meanwhile, the utility model range involved in the application is not limited to the technical scheme formed by the specific combination of the above technical features, and should also cover other technical schemes formed by any combination of the above technical features or equivalent features without departing from the utility model concept. For example, the technical scheme formed by replacing the above features with the technical features disclosed in the application (but not limited to) having similar functions.

Claims

1. A ship stop check valve, comprising a valve body (100), a valve core (200) vertically installed at a valve port (110) inside the valve body (100), and a contact plate (120) arranged at the valve port (110) for sealing the valve port (110), characterized in that: the valve core (200) comprises a fixed plate (210), a sealing plate (220) and a first sealing element (230), the top of the fixed plate (210) is movably connected with a valve rod (300) through a moving rod (240), the sealing plate (220) is installed at the bottom of the fixed plate (210) through a plurality of bolts, and the outer side of the sealing plate (220) is provided with the first sealing element (230) at the connection with the valve port, so that the valve core (200) is converted from an original integral structure to a split structure, facilitating replacement of the valve core (200); the contact plate (120) is installed at the valve port (110) through bolts, and the contact plate (120) is provided with a sealing port, the sealing port is provided with a corresponding second sealing element (121), the second sealing element (121) abuts against the first sealing element (230), and the valve port (110) is sealed. The first sealing element (230) and the second sealing element (121) are made of rubber material, and the first sealing element (230) and the second sealing element (121) are both in a conical ring structure. A plurality of sealing strips (231) are arranged on the first sealing element (230) along the outer side from top to bottom, and a plurality of sealing grooves (122) are arranged on the inner side of the second sealing element (121) from top to bottom in parallel and at intervals, and each sealing strip (231) is positioned and clamped in the corresponding sealing groove (122).

2. A marine dead-end check valve according to claim 1, characterised in that: The contact plate (120) is in a ring structure, and the contact surface of the sealing port is in an arc structure.

3. A marine dead-end check valve according to claim 2, characterised in that: The outer side of the sealing plate (220) is in a conical structure.

4. A marine dead-end check valve according to claim 1, characterized in that: A positioning cylinder (400) is installed in the inner side of a sealing cover (500) on the valve body (100) and is sleeved on the outer side of the valve rod (300) for positioning the upward movement position of the valve core (200).

5. A marine stop check valve according to claim 1, characterised in that: ​ 6. A marine dead-end check valve according to claim 1, characterized in that: ​

Images