Fixed forged steel ball valve capable of preventing backflow

Abstract

The utility model discloses an anti-backflow fixed forged steel ball valve which comprises a water inlet pipe, a water outlet pipe is arranged on one side of the water inlet pipe, and a spherical valve pipe assembly is arranged between the water inlet pipe and the water outlet pipe. According to the device, a water inlet pipe and a water outlet pipe are connected with a water pipe through an existing flange piece and a bolt by a worker, during use, the worker firstly pulls a pull rod upwards to unlock a rotating handle, then rotates the rotating handle clockwise to rotate the spherical valve body to form a passage, and rotates the rotating handle anticlockwise to close the spherical valve body when the spherical valve body is closed; when water remains in the spherical valve body, the button is squeezed upwards, the connecting rod is contracted, the bottom plug is separated from the draining opening, and therefore the water in the spherical valve body is released, when backflow is generated, the backflow water can impact one side of the bottom plug, and the bottom plug moves in the direction of the bent lever. And the effect of releasing the residual water in the ball valve is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, and more specifically to a fixed forged steel ball valve for preventing backflow. Background Art

[0002] Ball valve is a common type of valve, mainly used in pipeline systems to open and close or control the flow of fluids. The core component of a ball valve is a sphere with a circular channel, which can rotate 90 degrees around its own axis to open and close the valve.

[0003] After searching, the existing patent (Announcement No.: CN216768470U) discloses a fixed forged steel ball valve with an anti-backflow structure, which relates to the field of valve technology, solves the locking of the handle, the friction generated when the handle is turned, the anti-loosening of the clamping bolt, and the anti-backflow of the valve, including a pipeline; the outer side of the pipeline has two planes, and a vertical through hole is opened above the pipeline; the one-way component is clamped on the inner side of the pipeline; the rotating shaft is inserted into the through hole of the pipeline, and there is a forged steel ball valve at the bottom of the rotating shaft, and the rotating shaft is provided with an external thread. The friction gasket connected by rotation makes the handle smoother when rotating, and the hexagonal nut is prevented from loosening by the clamping plate, thereby preventing the loosening of the handle caused by the loosening of the hexagonal nut. The handle and the clamping plate are locked at the same time by the positioning shaft, which on the one hand avoids the rotation of the handle caused by external factors, and on the other hand enables the clamping plate to effectively prevent the loosening of the hexagonal nut.

[0004] When the above device closes the ball valve, some moisture is likely to remain inside the ball valve, causing problems such as valve corrosion, freezing in winter, and microbial growth. At the same time, backflow is likely to occur on one side of the outlet pipe, and the backflow water will also damage the ball valve. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a fixed forged steel ball valve with backflow prevention to solve the problem that some moisture is likely to remain inside the ball valve when the ball valve is closed, thereby causing problems such as valve corrosion, freezing in winter, and microbial growth. At the same time, backflow is likely to occur on one side of the water outlet pipe, and the backflow water will also cause damage to the ball valve.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a fixed forged steel ball valve with backflow prevention, comprising an inlet pipe, a water outlet pipe is arranged on one side of the inlet pipe, a spherical valve pipe assembly is arranged between the inlet pipe and the outlet pipe, for controlling the opening and closing of the inlet pipe and the outlet pipe, an opening and closing regulating device is arranged on the upper side of the spherical valve pipe assembly, for controlling the opening or closing of the spherical valve pipe assembly, a drain device is arranged on the bottom side of the spherical valve pipe assembly, for releasing the residual water in the spherical valve pipe assembly, and an anti-backflow device is arranged inside the outlet pipe, for preventing the backflow of water.

[0007] Preferably, the spherical valve tube assembly includes a valve tube body, a spherical groove, and a spherical valve body, the valve tube body is fixedly installed between the water inlet pipe and the water outlet pipe, the spherical groove is opened inside the valve tube body, and the spherical valve body is movably installed inside the spherical groove.

[0008] Preferably, the opening and closing adjustment device includes a connecting piece, a fixing piece, a connecting column, and a turning handle, wherein the connecting piece is fixedly installed on the top of the spherical valve body, the fixing piece is fixedly installed on the top of the valve tube body, the bottom end of the connecting column is fixedly installed on the top of the connecting piece, and the turning handle is fixedly sleeved on the top of the outer surface of the connecting column.

[0009] Preferably, the opening and closing adjustment device also includes a supporting platform, a pull rod, a spring 1, and a connecting frame. The supporting platform is fixedly mounted on one side of the fixing member, the connecting frame is fixedly mounted on the top of the supporting platform, the pull rod is movably sleeved on the connecting frame, the bottom end of the spring 1 is fixedly mounted on the pull rod, and the bottom of the spring 1 is fixedly mounted on the bottom side of the connecting frame.

[0010] Preferably, the drain device comprises a drain port, a bottom plug, and a connecting rod, the drain port is opened at the bottom of the spherical valve body, the bottom plug is movably sleeved in the drain port, and the connecting rod is fixedly installed at the bottom of the bottom plug.

[0011] Preferably, the drainage device also includes a second spring and a button, wherein the button is fixedly mounted on the bottom of the connecting rod, the top of the second spring is fixedly mounted on the bottom of the valve tube body, and the bottom of the connecting rod is fixedly mounted on the top of the button.

[0012] Preferably, the backflow prevention device includes a cover plate, a square plate, a curved rod, a limit block, and a spring three, the cover plate being fixedly mounted inside the water outlet pipe, the top end of the square plate being movably sleeved on the cover plate, one end of the curved rod being fixedly mounted inside the water outlet pipe, the square plate being movably sleeved on the curved rod, the limit block being fixedly mounted on one end of the curved rod, the top end of the spring three being fixedly mounted inside the water outlet pipe, and the bottom end of the spring three being fixedly mounted on one side of the square plate.

[0013] Preferably, the shape of the bottom plug is set to be the same as the bottom of the spherical valve body, and the outer surface of the bottom plug is provided with waterproof rubber.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model allows a worker to connect a water inlet pipe and a water outlet pipe with the water pipe through existing flanges and bolts. When in use, the worker first pulls the pull rod upwards to release the lock of the turning handle, and then turns it clockwise to rotate the ball valve body to form a passage. When closing, the turning handle is turned counterclockwise to close it. When water remains in the interior of the ball valve body, the button is squeezed upwards to shrink the connecting rod, so that the bottom plug is separated from the drain port to release the water inside the ball valve body. When backflow occurs, the backflowing water will impact one side of the bottom plug, so that the bottom plug moves along the direction of the curved rod to close the cover plate. At the same time, the elastic force of the spring three will also assist the curved rod to close. Utilizing the above structure, the water remaining in the ball valve can be released while preventing backflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 For the utility model Figure 2 A magnified schematic diagram of the structure of A;

[0019] Figure 4 For the utility model Figure 2 A magnified schematic diagram of the B structure;

[0020] Figure 5 It is a structural schematic diagram of the opening and closing regulating device of the utility model.

[0021] [Reference Signs]

[0022] 1. Water inlet pipe; 2. Water outlet pipe; 3. Ball valve pipe assembly; 4. Opening and closing adjustment device; 5. Drain device; 6. Anti-backflow device; 301. Valve pipe body; 302. Ball groove; 303. Ball valve body; 401. Connecting piece 1; 402. Fixing piece; 403. Connecting column; 404. Turning handle; 405. Support platform; 406. Pull rod; 407. Spring 1; 408. Connecting frame; 501. Drain port; 502. Bottom plug; 503. Connecting rod; 504. Spring 2; 505. Button; 601. Cover plate; 602. Square plate; 603. Curved rod; 604. Limit block; 605. Spring 3. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0024] The preferred embodiment of the fixed forged steel ball valve for preventing backflow provided by the utility model is as follows: Figures 1 to 5 As shown: it includes a water inlet pipe 1, a water outlet pipe 2 is arranged on one side of the water inlet pipe 1, a ball valve pipe assembly 3 is arranged between the water inlet pipe 1 and the water outlet pipe 2, and is used to control the opening and closing of the water inlet pipe 1 and the water outlet pipe 2, a through-and-closing regulating device 4 is arranged on the upper side of the ball valve pipe assembly 3, and is used to control the opening or closing of the ball valve pipe assembly 3, a drain device 5 is arranged on the bottom side of the ball valve pipe assembly 3, and is used to release the residual water in the ball valve pipe assembly 3, and a backflow prevention device 6 is arranged inside the water outlet pipe 2, and is used to prevent the backflow of water.

[0025] In this embodiment, the spherical valve tube assembly 3 includes a valve tube body 301, a spherical groove 302, and a spherical valve body 303. The valve tube body 301 is fixedly installed between the water inlet pipe 1 and the water outlet pipe 2, the spherical groove 302 is opened inside the valve tube body 301, and the spherical valve body 303 is movably installed inside the spherical groove 302.

[0026] In this embodiment, the opening and closing adjustment device 4 includes a connecting piece 401, a fixing piece 402, a connecting column 403, and a turning handle 404. The connecting piece 401 is fixedly installed on the top of the spherical valve body 303, the fixing piece 402 is fixedly installed on the top of the valve tube body 301, the bottom end of the connecting column 403 is fixedly installed on the top of the connecting piece 401, and the turning handle 404 is fixedly sleeved on the top of the outer surface of the connecting column 403.

[0027] In this embodiment, the opening and closing adjustment device 4 also includes a supporting platform 405, a pull rod 406, a spring 407, and a connecting frame 408. The supporting platform 405 is fixedly installed on one side of the fixing member 402, the connecting frame 408 is fixedly installed on the top of the supporting platform 405, the pull rod 406 is movably sleeved on the connecting frame 408, the bottom end of the spring 407 is fixedly installed on the pull rod 406, and the bottom of the spring 407 is fixedly installed on the bottom side of the connecting frame 408. Embodiment 2

[0028] Based on the first embodiment, the preferred embodiment of the fixed forged steel ball valve for preventing backflow provided by the utility model is as follows: Figures 1 to 5As shown: the drain device 5 includes a drain port 501, a bottom plug 502, and a connecting rod 503. The drain port 501 is opened at the bottom of the spherical valve body 303, the bottom plug 502 is movably sleeved in the drain port 501, and the connecting rod 503 is fixedly installed at the bottom of the bottom plug 502.

[0029] In this embodiment, the drainage device 5 also includes a spring 504 and a button 505. The button 505 is fixedly installed at the bottom of the connecting rod 503. The top of the spring 504 is fixedly installed at the bottom of the valve tube body 301. The bottom of the connecting rod 503 is fixedly installed at the top of the button 505.

[0030] In this embodiment, the backflow prevention device 6 includes a cover plate 601, a square plate 602, a curved rod 603, a limit block 604, and a spring three 605. The cover plate 601 is fixedly installed inside the water outlet pipe 2, the top end of the square plate 602 is movably sleeved on the cover plate 601, one end of the curved rod 603 is fixedly installed inside the water outlet pipe 2, the square plate 602 is movably sleeved on the curved rod 603, the limit block 604 is fixedly installed at one end of the curved rod 603, the top end of the spring three 605 is fixedly installed inside the water outlet pipe 2, and the bottom end of the spring three 605 is fixedly installed on one side of the square plate 602.

[0031] In this embodiment, the shape of the bottom plug 502 is set to be the same as the bottom of the spherical valve body 303, and the outer surface of the bottom plug 502 is provided with waterproof rubber.

[0032] The working process of the utility model is as follows:

[0033] The staff first connects the water inlet pipe 1 and the water outlet pipe 2 to the water pipe through the existing flanges and bolts. When in use, the staff first pulls the pull rod 406 upwards to release the lock of the turning handle 404, and then turns it clockwise to rotate the ball valve body 303 to form a passage. When closing, the turning handle 404 is turned counterclockwise to close it. When there is residual water inside the ball valve body 303, the button 505 is squeezed upward to shrink the connecting rod 503, so that the bottom plug 502 is separated from the drain port 501, thereby releasing the water inside the ball valve body 303. When backflow occurs, the backflow water will impact one side of the bottom plug 502, so that the bottom plug 502 moves along the direction of the curved rod 603, closing the cover plate 601, and at the same time, the elastic force of the spring three 605 will also assist the curved rod 603 to close.

[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0035] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0036] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A fixed forged steel ball valve for preventing backflow, comprising a water inlet pipe (1), characterized in that: A water outlet pipe (2) is arranged on one side of the water inlet pipe (1); a ball valve pipe assembly (3) is arranged between the water inlet pipe (1) and the water outlet pipe (2) for controlling the opening and closing of the water inlet pipe (1) and the water outlet pipe (2); an opening and closing regulating device (4) is arranged on the upper side of the ball valve pipe assembly (3) for controlling the opening or closing of the ball valve pipe assembly (3); a drain device (5) is arranged on the bottom side of the ball valve pipe assembly (3) for releasing the residual water in the ball valve pipe assembly (3); and a backflow prevention device (6) is arranged inside the water outlet pipe (2) for preventing the backflow of water.

2. A fixed forged steel ball valve for preventing backflow according to claim 1, characterized in that: The spherical valve pipe assembly (3) comprises a valve pipe body (301), a spherical groove (302), and a spherical valve body (303); the valve pipe body (301) is fixedly installed between the water inlet pipe (1) and the water outlet pipe (2); the spherical groove (302) is provided inside the valve pipe body (301); and the spherical valve body (303) is movably installed inside the spherical groove (302).

3. A fixed forged steel ball valve for preventing backflow according to claim 2, characterized in that: The opening and closing regulating device (4) comprises a connecting piece (401), a fixing piece (402), a connecting column (403), and a turning handle (404), wherein the connecting piece (401) is fixedly mounted on the top of the spherical valve body (303), the fixing piece (402) is fixedly mounted on the top of the valve tube body (301), the bottom end of the connecting column (403) is fixedly mounted on the top of the connecting piece (401), and the turning handle (404) is fixedly sleeved on the top of the outer surface of the connecting column (403).

4. A fixed forged steel ball valve for preventing backflow according to claim 3, characterized in that: The opening and closing regulating device (4) further comprises a supporting platform (405), a pull rod (406), a spring one (407), and a connecting frame (408), wherein the supporting platform (405) is fixedly mounted on one side of the fixing member (402), the connecting frame (408) is fixedly mounted on the top of the supporting platform (405), the pull rod (406) is movably sleeved on the connecting frame (408), the bottom end of the spring one (407) is fixedly mounted on the pull rod (406), and the bottom of the spring one (407) is fixedly mounted on the bottom side of the connecting frame (408).

5. A fixed forged steel ball valve for preventing backflow according to claim 4, characterized in that: The drain device (5) comprises a drain port (501), a bottom plug (502), and a connecting rod (503); the drain port (501) is provided at the bottom of the spherical valve body (303); the bottom plug (502) is movably sleeved in the drain port (501); and the connecting rod (503) is fixedly mounted at the bottom of the bottom plug (502).

6. A fixed forged steel ball valve for preventing backflow according to claim 5, characterized in that: The drainage device (5) further comprises a second spring (504) and a button (505), wherein the button (505) is fixedly mounted on the bottom of the connecting rod (503), the top of the second spring (504) is fixedly mounted on the bottom of the valve tube body (301), and the bottom of the connecting rod (503) is fixedly mounted on the top of the button (505).

7. A fixed forged steel ball valve for preventing backflow according to claim 6, characterized in that: The backflow prevention device (6) comprises a cover plate (601), a square plate (602), a curved rod (603), a stop block (604), and a spring three (605); the cover plate (601) is fixedly mounted inside the water outlet pipe (2); the top end of the square plate (602) is movably sleeved on the cover plate (601); one end of the curved rod (603) is fixedly mounted inside the water outlet pipe (2); the square plate (602) is movably sleeved on the curved rod (603); the stop block (604) is fixedly mounted on one end of the curved rod (603); the top end of the spring three (605) is fixedly mounted inside the water outlet pipe (2); and the bottom end of the spring three (605) is fixedly mounted on one side of the square plate (602).

8. The fixed forged steel ball valve for preventing backflow according to claim 7, characterized in that: The shape of the bottom plug (502) is set to be the same as the bottom of the spherical valve body (303), and the outer surface of the bottom plug (502) is provided with waterproof rubber.

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