Slow-closing type hydraulic control valve

Abstract

The utility model provides a slowly-closed hydraulic control valve, and belongs to the technical field of check valves. The slowly-closed hydraulic control valve comprises a main body, a closing mechanism and an adjusting assembly, the main body comprises a valve body, an elbow is installed on one side of the valve body, one end of the elbow is sleeved with a copper pipe, the adjusting assembly comprises a diaphragm, a valve rod is inserted in the center of the diaphragm, and the bottom end of the valve rod is sleeved with a valve clack. The sealing mechanism comprises a valve deck, a needle valve is installed at one end of the valve deck, one end of the copper pipe is communicated with the input end of the needle valve, the other end of the copper pipe is communicated with the output end of the needle valve, and the other end of the copper pipe is communicated with the output end of the needle valve. According to the slow-closing type hydraulic control valve, the service life of the slow-closing type hydraulic control valve can be effectively prolonged, and the slow-closing type hydraulic control valve has high practical value.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a slow-closing hydraulic control valve. Background Art

[0002] A check valve is a valve with a circular disc as the opening and closing part. It is used in pipeline systems and is automatically opened and closed by the force generated by the flow of the medium in the pipeline. It is an automatic valve used to prevent the medium from flowing back in the pipeline. A hydraulic control valve is a type of check valve. Its structure is similar to that of a stop valve. Its valve body and disc are the same as those of a stop valve. A guide sleeve is machined on the upper part of the disc and the lower part of the valve cover. The disc guide sleeve can be freely raised and lowered in the valve guide sleeve. When the medium flows downstream, the disc opens by the thrust of the medium. When the medium stops flowing, the disc falls on the valve seat by its own gravity to prevent the medium from flowing back.

[0003] Based on the above, the inventors have discovered the following problems: in a pressurized pipeline, when medium delivery is interrupted, the water flow rate suddenly changes, causing water hammer. The water hammer phenomenon will cause damage to the hydraulic control valve. If it is not handled, the service life of the valve body will be reduced in the long run, making it difficult for the valve body to block the backflow of the medium.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a slow-closing hydraulic control valve is provided to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the embodiment of the utility model provides a slow-closing hydraulic control valve, which is specifically implemented by the following technical solutions:

[0006] A slow-closing hydraulic control valve comprises a main body, a closing mechanism and an adjusting component, the main body comprising a valve body, an elbow being installed on one side of the valve body, a copper tube being sleeved on one end of the elbow, the adjusting component comprising a diaphragm, a valve stem being inserted at the center of the diaphragm, a valve disc being sleeved on the bottom end of the valve stem, a first diaphragm supporting plate and a second diaphragm supporting plate being sleeved on the upper and lower ends of the valve stem located at the diaphragm, respectively, the bottom end of the first diaphragm supporting plate and the top end of the second diaphragm supporting plate are connected to the diaphragm, the top end of the valve disc is connected to the bottom end of the second diaphragm supporting plate, the closing mechanism comprises a valve cover, a needle valve is installed on one end of the valve cover, one end of the copper tube is communicated with the input end of the needle valve, and a ball valve is installed on the other end of the valve cover.

[0007] Furthermore, the diaphragm is arranged on the upper end surface of the valve body, and a plurality of mounting holes are opened on the outer side of the diaphragm.

[0008] The beneficial effect of adopting the above further solution is that by arranging the diaphragm on the upper end surface of the valve body and providing a mounting hole, the valve body and the valve cover can be pressed and mounted on the diaphragm.

[0009] Furthermore, the upper end surface of the valve body is provided with threaded holes at the bottom ends of the plurality of mounting holes.

[0010] The beneficial effect of adopting the above further solution is that, by providing threaded holes, it is convenient for users to fix the valve body, the diaphragm and the valve cover with hexagonal bolts.

[0011] Furthermore, a plurality of hexagonal bolts are movably inserted on the outer side of the bottom end of the valve cover, and the bottom ends of the hexagonal bolts pass through the mounting holes and are threadedly connected with the threaded holes.

[0012] The beneficial effect of adopting the above further solution is that by passing one end of the hexagonal bolt through the mounting hole and threadedly connected with the threaded hole, the valve cover and the valve body are tightly fixed with the diaphragm therebetween under the tightening of the hexagonal bolt.

[0013] Furthermore, a spring is sleeved on the upper end of the first membrane supporting plate, and the other end of the spring abuts against the inner top end of the valve cover.

[0014] The beneficial effect of adopting the above further scheme is that by installing a spring, when the backflow water pressure is small, the spring can press the diaphragm downward to ensure that the valve disc and the valve disc frame close slowly, thereby avoiding the phenomenon of backflow at the other end of the valve body when the medium stops being transported at one end of the valve body, and reducing the damage to the valve body caused by water hammer.

[0015] Furthermore, a valve flap frame is provided inside the valve body, and the valve flap is clamped with the valve flap frame.

[0016] The beneficial effect of adopting the above further solution is that by arranging a valve disc holder inside the valve body, after the valve disc holder is engaged with the valve disc, backflow of the medium at one end of the valve body is avoided.

[0017] Furthermore, flanges are installed at both ends of the valve body.

[0018] The beneficial effect of adopting the above further solution is that by installing the flange, it is convenient to connect the two ends of the valve body with the pipeline.

[0019] Furthermore, a hanging ring is installed on the top of the valve cover.

[0020] The beneficial effect of adopting the above further solution is that by installing a hanging ring on the top of the valve cover, it is convenient for the user to lift the valve body.

[0021] The beneficial effects of the utility model are as follows: the utility model obtains a slow-closing hydraulic control valve through the above design. The slow-closing hydraulic control valve inserts a valve stem at the center of the diaphragm and installs a valve disc at the bottom end of the valve stem. The top end of the valve disc is connected to the bottom end of the second diaphragm supporting plate. When the medium enters the interior of the valve body, the valve disc is lifted up by the medium, thereby not affecting the medium passing through the interior of the valve body. After the medium at one end of the valve body stops being transported, the medium at the other end flows back. The returned water flows through the elbow, the copper tube and the needle valve in the open state into the interior of the valve cover, thereby pressing down the diaphragm installed on the upper end of the valve body, so that the valve disc is pressed down and slowly closes with the valve disc frame again, avoiding the medium from flowing out. The user can adjust the downward pressure speed of the valve disc by adjusting the opening size of the needle valve. The larger the needle valve is opened, the faster the valve disc closes. By installing a ball valve, it is convenient for the user to discharge the medium inside the valve cover, thereby avoiding the situation where the valve disc cannot be lifted up after the medium enters the valve body. By installing a spring, when the return water pressure is small, the return water pressure cooperates with the spring to press the diaphragm downward, ensuring that the valve disc and the valve disc frame close slowly, thereby avoiding the phenomenon of backflow at the other end of the valve body when the medium stops being transported at one end of the valve body, reducing the damage to the valve body caused by water hammer, and increasing the service life of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A three-dimensional structure diagram of a slow-closing hydraulic control valve provided by the utility model Figure 1 ;

[0024] Figure 2 A three-dimensional structure diagram of a slow-closing hydraulic control valve provided by the utility model Figure 2 ;

[0025] Figure 3 A schematic diagram of the internal cross-section of a slow-closing hydraulic control valve provided by the utility model;

[0026] Figure 4 It is a schematic diagram of the exploded three-dimensional structure of a slow-closing hydraulic control valve provided by the utility model;

[0027] Figure 5 A slow-closing hydraulic control valve provided by the utility model Figure 4 A magnified schematic diagram of the A structure.

[0028] In the figure: 100, main body; 1001, valve body; 1002, flange; 1003, elbow; 1004, copper tube; 1005, valve disc holder; 1006, valve disc; 1007, spring; 1008, valve stem; 1009, second membrane support plate; 1010, diaphragm; 1011, first membrane support plate; 1012, threaded hole; 1013, mounting hole; 1014, hexagonal bolt; 200, closing mechanism; 2001, valve cover; 2002, needle valve; 2003, ball valve. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1 of the utility model of a slow closing hydraulic control valve

[0032] The utility model provides the following technical solutions: Figure 1 - Figure 5As shown, a slow-closing hydraulic control valve includes a main body 100, a closing mechanism 200 and an adjusting assembly. The main body 100 includes a valve body 1001, an elbow 1003 is installed on one side of the valve body 1001, and a copper tube 1004 is sleeved on one end of the elbow 1003. The adjusting assembly includes a diaphragm 1010, a valve stem 1008 is inserted at the center of the diaphragm 1010, a valve disc 1006 is sleeved on the bottom end of the valve stem 1008, and the valve stem 1008 is located at the upper and lower ends of the diaphragm 1010 and is sleeved with a first membrane support plate 1011 and a second membrane support plate respectively. 1009, the bottom end of the first membrane support plate 1011 and the top end of the second membrane support plate 1009 are both connected to the diaphragm 1010, the top end of the valve flap 1006 is connected to the bottom end of the second membrane support plate 1009, the closing mechanism 200 includes a valve cover 2001, one end of the valve cover 2001 is installed with a needle valve 2002, one end of the copper tube 1004 is connected to the input end of the needle valve 2002, and the other end of the valve cover 2001 is installed with a ball valve 2003, by inserting a valve stem 1008 at the center of the diaphragm 1010, and at the bottom end of the valve stem 1008 The valve flap 1006 is installed, and the top of the valve flap 1006 is connected to the bottom of the second membrane support plate 1009. When the medium enters the valve body 1001, the valve flap 1006 is lifted by the medium, so as not to affect the medium passing through the valve body 1001. When the medium at one end of the valve body 1001 stops being transported, the medium at the other end flows back. The backwater flows through the elbow 1003, the copper tube 1004 and the needle valve 2002 in the open state and enters the interior of the valve cover 2001, thereby pressing the diaphragm 1010 installed on the upper end of the valve body 1001 downward. , so that the valve disc 1006 is pressed down and re-closed with the valve disc frame 1005, avoiding the backflow of the medium and reducing the damage to the valve body 1001 caused by water hammer. The user can adjust the downward pressure speed of the valve disc 1006 by adjusting the opening size of the needle valve 2002. The larger the needle valve 2002 is opened, the faster the closing speed of the valve disc 1006. By installing the ball valve 2003, it is convenient for the user to discharge the medium inside the valve cover 2001, thereby avoiding the situation where the valve disc 1006 cannot be lifted up after the medium enters the valve body 1001.

[0033] Embodiment 2 of the utility model of a slow closing hydraulic control valve

[0034] Reference Figure 1 - Figure 5As shown, the diaphragm 1010 is arranged on the upper end surface of the valve body 1001, and a plurality of mounting holes 1013 are opened on the outer side of the diaphragm 1010. The upper end surface of the valve body 1001 is provided with threaded holes 1012 at the bottom ends of the plurality of mounting holes 1013. A plurality of hexagonal bolts 1014 are movably inserted on the outer side of the bottom end of the valve cover 2001. The bottom ends of the hexagonal bolts 1014 pass through the mounting holes 1013 and are threadedly connected with the threaded holes 1012. A spring 1007 is sleeved on the upper end of the first diaphragm supporting plate 1011, and the other end of the spring 1007 abuts against the inner top end of the valve cover 2001. By arranging the diaphragm 1010 on the upper end surface of the valve body 1001 and opening the mounting holes 1013, the valve body 1001 and the valve cover 2001 can squeeze and install the diaphragm 1010. A threaded hole 1012 is provided to facilitate the user to fix the valve body 1001, the diaphragm 1010 and the valve cover 2001 with the hexagonal bolt 1014. By passing one end of the hexagonal bolt 1014 through the mounting hole 1013 and threadedly connected with the threaded hole 1012, the valve cover 2001 and the valve body 1001 are tightly fixed with the diaphragm 1010 therebetween under the tightening of the hexagonal bolt 1014. By installing the spring 1007, when the pressure of the reflux water flow is relatively small, the reflux pressure cooperates with the spring 1007 to press the diaphragm 1010 downward, ensuring that the valve flap 1006 and the valve flap frame 1005 are closed, thereby avoiding the phenomenon of reflux at the other end of the valve body 1001 when the medium stops being transported, and reducing the damage to the valve body 1001 caused by water hammer.

[0035] Embodiment 3 of the utility model of a slow closing hydraulic control valve

[0036] Reference Figure 1 - Figure 5 As shown, a valve flap holder 1005 is provided inside the valve body 1001, and the valve flap 1006 is clamped with the valve flap holder 1005, and flanges 1002 are installed at both ends of the valve body 1001. A hanging ring is installed at the top of the valve cover 2001. By arranging the valve flap holder 1005 inside the valve body 1001 and clamping it with the valve flap 1006, the medium backflow at one end of the valve body 1001 can be avoided. By installing the flange 1002, it is convenient to connect the two ends of the valve body 1001 with the pipeline. By installing the hanging ring at the top of the valve cover 2001, it is convenient for the user to lift the valve body 1001.

[0037] Specifically, the working principle of this slow-closing hydraulic control valve is as follows: when in use, flanges 1002 are installed at both ends of the valve body 1001, and the user can connect them to the pipeline. When the medium inside the pipeline enters the valve body 1001, the valve disc 1006 can be lifted up, so that the medium passes through the valve disc frame 1005 and enters the other end of the valve body 1001. When the medium inside the pipeline stops being transported, the medium at the other end of the valve body 1001 flows back, and the returned water flows through the elbow 1003, the copper tube 1004 and the open needle valve 2002 into the interior of the valve cover 2001. At this time, the ball valve 2002 is closed. After entering the interior of the valve cover 2001, the diaphragm 1010 installed on the upper end of the valve body 1001 is pressed down under the influence of water pressure, so that the valve disc 1006 moves slowly downward. , and reclose with the valve flap frame 1005 to avoid the occurrence of medium backflow and reduce the damage to the valve body 1001 caused by water hammer. When the medium in the pipeline needs to be re-delivered, the user can open the ball valve 2003 to discharge the medium in the valve cover 2001. Then, when the medium re-enters the valve body 1001, the pressure at the bottom end of the diaphragm 1010 is greater than the pressure at the upper end, thereby lifting it up, and the valve flap 1006 is separated from the valve flap frame 1006 again, so that the medium can pass through the valve body 1001. By installing the spring 1007, when the reflux water pressure is small, the reflux pressure cooperates with the spring 1007 to press the diaphragm 1010 downward, ensuring that the valve flap 1006 and the valve flap frame 1005 are closed, blocking the medium backflow and reducing the damage to the valve body 1001 caused by water hammer.

[0038] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A slow closing hydraulic control valve, characterized in that: The invention comprises a main body (100), a sealing mechanism (200) and an adjusting component, wherein the main body (100) comprises a valve body (1001), an elbow (1003) is installed on one side of the valve body (1001), a copper tube (1004) is sleeved on one end of the elbow (1003), the adjusting component comprises a diaphragm (1010), a valve stem (1008) is inserted at the center of the diaphragm (1010), a valve flap (1006) is sleeved on the bottom end of the valve stem (1008), and a first diaphragm support is sleeved on the upper and lower ends of the valve stem (1008) located on the diaphragm (1010). The first membrane supporting plate (1011) and the second membrane supporting plate (1009), the bottom end of the first membrane supporting plate (1011) and the top end of the second membrane supporting plate (1009) are both connected to the diaphragm (1010), the top end of the valve flap (1006) is connected to the bottom end of the second membrane supporting plate (1009), the closing mechanism (200) includes a valve cover (2001), one end of the valve cover (2001) is equipped with a needle valve (2002), one end of the copper tube (1004) is connected to the input end of the needle valve (2002), and the other end of the valve cover (2001) is equipped with a ball valve (2003).

2. A slow closing hydraulic control valve according to claim 1, characterized in that: The diaphragm (1010) is arranged on the upper end surface of the valve body (1001), and a plurality of mounting holes (1013) are opened on the outer side of the diaphragm (1010).

3. A slow closing hydraulic control valve according to claim 2, characterized in that: The upper end surface of the valve body (1001) is provided with threaded holes (1012) at the bottom ends of the plurality of mounting holes (1013).

4. A slow closing hydraulic control valve according to claim 3, characterized in that: A plurality of hexagonal bolts (1014) are movably inserted on the outer side of the bottom end of the valve cover (2001), and the bottom ends of the hexagonal bolts (1014) pass through the mounting holes (1013) and are threadedly connected to the threaded holes (1012).

5. The slow closing hydraulic control valve according to claim 1, characterized in that: The upper end of the first membrane support plate (1011) is sleeved with a spring (1007), and the other end of the spring (1007) is in contact with the inner top end of the valve cover (2001).

6. A slow closing hydraulic control valve according to claim 1, characterized in that: A valve flap frame (1005) is provided inside the valve body (1001), and the valve flap (1006) is clamped with the valve flap frame (1005).

7. A slow closing hydraulic control valve according to claim 1, characterized in that: Flanges (1002) are installed at both ends of the valve body (1001).

8. The slow-closing hydraulic control valve according to claim 1, characterized in that: A hanging ring is installed on the top end of the valve cover (2001).

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