Adjustable ship suction check valve

Abstract

The utility model discloses an adjustable ship suction check valve which comprises a valve element and an adjusting mechanism, the adjusting mechanism is installed on the top of a sealing cover and used for adjusting the opening and closing height of the valve element in a valve body, the adjusting mechanism comprises a screw rod and an adjusting nut, the screw rod is connected to the middle position of the sealing cover in a threaded mode, and the adjusting nut is connected to the top of the sealing cover in a threaded mode. And the top of the screw rod is fixedly connected with the adjusting nut, and the bottom of the screw rod extends into the sliding sleeve. The adjusting mechanism is arranged at the top of the sealing cover on the valve body, the screw on the adjusting mechanism is in threaded connection with the top of the sealing cover, the bottom of the screw extends into the sliding sleeve, the moving height of the valve rod is adjusted by rotating the extending length of the screw, then the opening and closing height of the valve element is adjusted, and meanwhile the valve does not need to be opened due to the external adjusting mechanism. Therefore, the valve element of the suction type valve can be adjusted in time according to the opening and closing requirements, and the check quality of the suction type check valve of the ship is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ship technology field, concretely relates to a adjustable ship suction check valve. BACKGROUND

[0002] Suction check valve is a kind of valve that can prevent fluid from flowing back. The valve disc of check valve opens under the action of fluid pressure, and fluid flows from the inlet side to the outlet side. When the pressure on the inlet side is lower than that on the outlet side, the valve disc automatically closes under the action of fluid pressure difference, its own gravity and other factors to prevent fluid from flowing back. It is an automatic valve that opens and closes relying on medium pressure. Currently, ship suction check valves are produced and manufactured according to GB / T3478 standard. The valve core and valve rod are both cast and then machined into shape. The weight of the valve core and valve rod directly affects the suction height capacity of the pump.

[0003] The existing adjustable ship suction check valve (application number 202122823297.X for a kind of adjustable ship suction check valve) sets the valve core and valve rod into split structure, and sets compression spring on the valve rod, so that the closing force of the valve core can be adjusted. However, suction check valve is usually used in ship sewage pipeline. The connection between the valve core and valve rod of bare structure can be stuck in the check process due to the erosion of foreign matter, thereby affecting the use of ship suction check valve. At the same time, the adjusting mechanism is arranged in the valve body, so the opening and closing height of the valve disc cannot be adjusted in time according to the needs, which affects the use of suction check valve. UTILITY MODEL CONTENTS

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an adjustable ship suction check valve to solve the technical problems that the connection between the valve core and valve rod of bare structure can be stuck in the check process due to the erosion of foreign matter, and the adjusting mechanism is arranged in the valve body, so the opening and closing height of the valve disc cannot be adjusted in time according to the needs, which affects the use of suction check valve.

[0005] According to the technical scheme provided by the embodiment of the present application, an adjustable ship suction check valve includes a valve core and an adjusting mechanism. The adjusting mechanism is installed on the top of the sealing cover and is used for adjusting the opening and closing height of the valve core in the valve body.

[0006] The adjusting mechanism includes a screw rod and an adjusting nut. The screw rod is screwed at the middle position of the sealing cover, and the top of the screw rod is fixedly connected with the adjusting nut, while the bottom of the screw rod is inserted into the inner part of the sliding sleeve.

[0007] The sliding sleeve is internally provided with a sliding groove, a valve rod is slidingly installed in the sliding sleeve, and a sliding block fixedly connected to the top of the valve rod abuts against an elastic element in the sliding groove, for elastically supporting the valve rod;

[0008] A protective sleeve is sleeved between the sliding sleeve and the valve core, for protecting the connection between the sliding sleeve and the valve rod;

[0009] A sealing sleeve is installed outside the valve core, for increasing the sealing performance of the valve core and the inlet of the valve body.

[0010] Further, a screw sleeve is arranged on the sealing cover, and a screw rod is screwed with the screw sleeve.

[0011] Further, a plurality of positioning sliding strips are arranged in the sliding groove, and a plurality of positioning grooves are arranged on the sliding block, each of the positioning grooves being clamped on the corresponding positioning sliding strip.

[0012] Further, the positioning sliding strips are arranged along the vertical direction of the sliding groove.

[0013] Further, the protective sleeve is of a folding structure.

[0014] Further, the sliding sleeve is installed at the bottom of the sealing cover through a screw.

[0015] Further, the sealing sleeve is made of rubber.

[0016] In summary, the application has the following beneficial effects:

[0017] I. By arranging a sliding sleeve and a protective sleeve on the valve core of the ship suction check valve, the valve rod moves along the sliding groove in the sliding sleeve, preventing the valve rod from being stuck by impurities in the sewage exposed in the valve body. Meanwhile, the foldable protective sleeve arranged between the sliding sleeve and the valve core protects the connection between the sliding sleeve and the valve rod, preventing impurities in the sewage from adhering to the valve rod and affecting the normal movement of the valve rod, thereby improving the check quality of the ship suction check valve.

[0018] II. By arranging an adjusting mechanism on the top of the valve body, the screw rod on the adjusting mechanism is screwed on the top of the sealing cover, and the bottom of the screw rod extends into the sliding sleeve. By adjusting the extension length of the screw rod, the movement height of the valve rod is adjusted, and the opening and closing height of the valve core is adjusted. Meanwhile, the external adjusting mechanism can adjust the valve core of the suction valve in time according to the needs of opening and closing without opening the valve, thereby improving the check quality of the ship suction check valve.

[0019] III. By arranging a sealing sleeve made of rubber outside the valve core, the sealing sleeve increases the sealing performance between the valve core and the valve body, thereby improving the check quality of the ship suction check valve. Attached Figure Description

[0020] 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:

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a front cross-sectional view of the present invention.

[0023] Figure 3 This is a schematic diagram of the exploded structure of the valve core of this utility model.

[0024] The following components are labeled in the diagram: Valve core-100, sealing sleeve-110, adjusting mechanism-200, screw-210, adjusting nut-220, sealing cover-300, valve body-400, sliding sleeve-500, sliding groove-510, positioning slide bar-520, elastic element-530, valve stem-600, slider-610, positioning groove-611, protective sleeve-700. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] The utility model provides an adjustable ship suction check valve, including valve element 100 and adjusting mechanism 200, adjusting mechanism 200 is installed on the top of sealing cover 300, so that the external adjusting mechanism 200, without opening sealing cover 300, can adjust the opening and closing height of valve element 100 inside valve body 400, adjusting mechanism 200 includes screw rod 210 and adjusting nut 220, screw rod 210 is screwed in the middle position of sealing cover 300, and the top of screw rod 210 is fixedly connected with adjusting nut 220, and the bottom is inserted into the inside of sliding sleeve 500, so that rotating adjusting nut 220 drives screw rod 210 to rotate and insert into sliding sleeve 500, and then according to the opening and closing height of valve element 100, the inserted length of screw rod 210 is adjusted, sliding sleeve 500 is provided with sliding groove 510 in the inside, valve rod 600 is slidably installed in sliding sleeve 500, and the top of valve rod 600 is fixedly connected with sliding block 610, and sliding block 610 is in abutment with elastic element 530 in sliding groove 510, which is used for the elastic support of valve rod 600, so that the water flow of the water inlet in valve body 400 pushes valve element 100 to move upwards, and then sliding block 610 on valve rod 600 moves upwards along sliding groove 510, so that sliding block 610 compresses elastic element 530 metal spring during the upward movement, when the water pressure in the water inlet reduces, the recovery of elastic element 530 metal spring and the gravity of valve element 100 drive valve rod 600 to move downwards along sliding sleeve 500, so that valve element 100 seals the water inlet metal.

[0028] As a preferred embodiment, please refer to Figure 3 A screw sleeve is arranged on sealing cover 300, and screw rod 210 is screwed on the screw sleeve, so that rotating adjusting nut 220 drives screw rod 210 to rotate and move downwards or upwards along the screw sleeve, and the length of screw rod 210 inserted into sliding sleeve 500 is adjusted.

[0029] As a preferred embodiment, please refer to Figure 3 A plurality of positioning sliding strips 520 are further arranged in sliding groove 510, the positioning sliding strips 520 are arranged along the vertical direction of sliding groove 510, and the plurality of positioning sliding strips 520 are arranged side by side and at intervals, and a plurality of positioning grooves 611 are arranged on sliding block 610, each positioning groove 611 is clamped on the corresponding positioning sliding strip 520, so that sliding block 610 moves along sliding groove 510, and then valve rod 600 moves along sliding sleeve 500.

[0030] As a preferred embodiment, please refer to Figure 2 And Figure 3, the protective sleeve 700 is folded structure, and the protective sleeve 700 adopts plastic material, so that the sewage input by the water inlet on the valve body 400 pushes the valve core 100 to move upwards, and then the protective sleeve 700 is folded along with the upward movement of the valve core 100 in the upward movement process of the valve core 100, and the valve rod 600 in the upward movement is protected, so that the impurities in the sewage are prevented from adhering to the valve rod 600, the normal movement of the valve rod 600 is affected, and the non-return quality of the ship suction check valve is improved.

[0031] As a preferred embodiment, please refer to Figure 2 and Figure 3 The sliding sleeve 500 is installed at the bottom of the sealing cover 300 through screws, so that the valve core 100 is a split structure, and can be disassembled and replaced in time after being damaged.

[0032] As a preferred embodiment, please refer to Figure 2 and Figure 3 The sealing sleeve 110 is made of rubber material, so that the sealing sleeve 110 increases the connection sealing property with the water inlet in the process that the valve core 100 blocks the water inlet on the valve body 400, the sewage flowing back is prevented from eroding the valve core 100, and the non-return quality of the ship suction check valve is affected.

[0033] The working principle of the adjustable ship suction check valve is as follows:

[0034] In the process of the suction check valve of the ship stopping the sewage pipeline, because the sewage contains a large amount of impurities, a large amount of impurities will erode and contaminate the exposed structure of the suction check valve spool 100 and the valve stem 600, so that the suction check valve spool 100 is stuck, thereby affecting the use of the suction check valve of the ship, the sliding sleeve 500 and the protective sleeve 700 are arranged on the spool 100 of the suction check valve of the ship, so that the valve stem 600 moves along the inner sliding groove 510 of the sliding sleeve 500, and the valve stem 600 is prevented from being exposed to the inside of the valve body 400 and being stuck by impurities in the sewage, and the foldable protective sleeve 700 is arranged between the sliding sleeve 500 and the spool 100, so that the protective sleeve 700 is folded and protected at the connection between the sliding sleeve 500 and the valve stem 600 when the valve stem 600 moves along the sliding sleeve 500, so as to prevent the impurities in the sewage from contaminating the valve stem 600 and affecting the normal movement of the valve stem 600, thereby improving the stop quality of the suction check valve of the ship; meanwhile, the adjusting mechanism 200 is arranged on the top of the sealing cover 300 of the valve body 400, so that the screw rod 210 on the adjusting mechanism 200 is screwed on the top of the sealing cover 300, and the bottom extends into the sliding sleeve 500, and the extending length of the screw rod 210 is adjusted by rotating the adjusting nut 220 and the screw rod 210, so as to adjust the movement height of the valve stem 600 and the opening and closing height of the spool 100, and the external adjusting mechanism 200 does not need to be opened, and the spool 100 of the suction valve can be adjusted in time according to the needs of opening and closing, thereby improving the stop quality of the suction check valve of the ship; meanwhile, the sealing sleeve 110 made of rubber is arranged outside the spool 100, so as to increase the sealing performance between the spool 100 and the valve body 400, thereby improving the stop quality of the suction check valve of the ship.

[0035] The above description is only the preferred embodiment of the application and the description of the technical principles and schemes used. Meanwhile, the utility model range involved in the application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features without departing from the utility model concept. For example, the above features are replaced with the technical features disclosed in the application (but not limited to) having similar functions to form a technical solution.

Claims

1. An adjustable ship suction check valve, comprising a valve core (100) and an adjusting mechanism (200), the adjusting mechanism (200) is installed on the top of a sealing cover (300) and used for height adjustment of the opening and closing of the valve core (100) inside a valve body (400), characterized in that: the adjusting mechanism (200) comprises a screw rod (210) and an adjusting nut (220), the screw rod (210) is screwed in the middle of the sealing cover (300), the top of the screw rod (210) is fixedly connected with the adjusting nut (220), and the bottom of the screw rod (210) extends into the inside of a sliding sleeve (500); the sliding sleeve (500) is internally provided with a sliding groove (510), a valve rod (600) is slidingly installed in the sliding sleeve (500), and the top of the valve rod (600) is fixedly connected with a sliding block (610) which abuts against an elastic element (530) in the sliding groove (510) and is used for elastic support of the valve rod (600); a protective sleeve (700) is sleeved between the sliding sleeve (500) and the valve core (100) and is used for protection of the connection between the sliding sleeve (500) and the valve rod (600); and a sealing sleeve (110) is installed outside the valve core (100) and is used for increasing the sealing property of the valve core (100) and the inlet of the valve body (400). A screw sleeve is arranged on the sealing cover (300), and the screw rod (210) is screwed on the screw sleeve. A plurality of positioning sliding strips (520) are further arranged in the sliding groove (510), the positioning sliding strips (520) are arranged in parallel and at intervals, and a plurality of positioning grooves (611) are arranged on the sliding block (610), each positioning groove (611) is clamped on the corresponding positioning sliding strip (520). The positioning sliding strips (520) are arranged along the vertical direction of the sliding groove (510). The protective sleeve (700) is of a folding structure.

2. An adjustable marine suction check valve according to claim 1, characterized in that: The sliding sleeve (500) is installed on the bottom of the sealing cover (300) through a screw.

3. An adjustable marine suction check valve according to claim 1, characterized in that: ​ 4. An adjustable marine suction check valve according to claim 3, characterized in that: ​ 5. An adjustable marine suction check valve according to claim 1, characterized in that: ​ 6. An adjustable marine suction check valve according to claim 1, characterized in that: ​

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