Middle cavity inner swing type quick opening and closing gate valve

Abstract

The utility model relates to the technical field of valves, in particular to a middle cavity inner swing type gate valve capable of being rapidly opened and closed. Comprising a valve body shell, a driving mechanism, two valve plates and a plurality of arc-shaped rotating rods. The two valve plates are rotationally installed at the two ends of the inner side of the valve body shell correspondingly. The driving mechanism is used for driving the two valve plates to rotate synchronously. The driving mechanism comprises a first bevel gear, a bevel fluted disc, a mounting shaft, a second bevel gear, two third bevel gears, two connecting rods, two threaded rods and two threaded sleeves. A plurality of arc-shaped rotating rods are mounted on the rotating ring along the annular array, and the arc-shaped rotating rods are movably connected with the rotating ring. The sealing device has the advantages of being good in sealing effect, small in size and high in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a swing-type gate valve with a central cavity and capable of rapid opening and closing. Background Art

[0002] The gate valve's opening and closing member is a disc, which moves perpendicular to the flow direction to control the full opening and closing of the valve. It is widely used in fields such as water conservancy and oil and gas pipelines, providing flexible control over the opening and closing of connected pipelines. However, the disadvantages of traditional gate valves include large dimensions, the need for sufficient space to open, long opening and closing times, and a relatively complex structure.

[0003] The patent with announcement number CN114060546B discloses a gate valve with a swing-type rapid opening and closing in the middle cavity, including a valve seat, a gate, a valve stem and a runner. The opening and closing of the gate is controlled by the runner. A power-assisting handle is hinged on the side of the runner, and a locking sleeve is provided on the valve stem. The folding action of the power-assisting handle is linked to the locking sleeve. The top of the gate is hinged, and one side of the gate is hinged to the connecting rod. The other end of the connecting rod is hinged to a nut, and the nut is screwed onto the threaded rod at the lower end of the valve stem. A wedge-shaped clamping block is provided in the cavity of the valve seat, and the hinged end of the gate is connected to the slider. The slider is placed in the slide groove of the valve seat, and a compression spring is provided in the slide groove.

[0004] The above-mentioned disclosed patent still has the following technical defects: the valve body opening structure arranged at the upper end of the valve seat occupies a large space, which may make it impossible to install or the installation space is limited in some narrow spaces, and it can only control the handle at the upper end to open and close the valve body, which has certain limitations. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a gate valve with a swing-type rapid opening and closing function in the middle cavity.

[0006] The technical solution of the utility model is a gate valve with a swing-type rapid opening and closing function in the middle cavity, comprising:

[0007] Valve body shell;

[0008] Two valve plates, the two valve plates are rotatably mounted on both ends of the inner side of the valve body shell;

[0009] A driving mechanism for driving the two valve plates to rotate synchronously, the driving mechanism comprising a first bevel gear, a bevel gear disc, a mounting shaft, a second bevel gear, two third bevel gears, two connecting rods, two threaded rods and two threaded sleeves, wherein the mounting shaft is rotatably mounted on the upper end of the valve body housing, the first bevel gear and the second bevel gear are both mounted on the mounting shaft, the bevel gear disc is rotatably mounted on the outer periphery of the valve body housing, a rotating ring is connected to the side of the bevel gear disc, the bevel gear disc is meshed with the first bevel gear, the two threaded rods are respectively rotatably mounted on the inner two ends of the valve body housing, the threads of the two threaded rods are in opposite directions, the two third bevel gears are respectively connected to the two threaded rods, the two third bevel gears are both threadedly connected to the second bevel gear, the two threaded sleeves are respectively threadedly mounted on the threaded rods on both sides, the two connecting rods are respectively rotatably connected to the threaded sleeves on both sides, and the other ends of the two connecting rods are respectively rotatably connected to the valve plates on both sides;

[0010] A plurality of arc-shaped rotating rods are installed on the rotating ring along an annular array, and the arc-shaped rotating rods are movably connected to the rotating ring.

[0011] Preferably, the arc-shaped rotating rod and the rotating ring are movably connected through a first rotating shaft and a second rotating shaft. The first rotating shaft is installed on the rotating ring along the radial direction of the rotating ring, and the second rotating shaft is vertically connected to the first rotating shaft and is rotationally connected to the arc-shaped rotating rod.

[0012] Preferably, a magnet is provided on the arc-shaped rotating rod, and the rotating ring is an iron ring.

[0013] Preferably, an annular shell and a bevel gear outer cover are provided on the outer periphery of the valve body shell, the bevel gear disc and the rotating ring are both provided on the inner side of the annular shell, an annular hole is opened on the annular shell, and the first bevel gear is provided on the inner side of the bevel gear outer cover.

[0014] Preferably, an arrow is provided on the rotating ring, and marking text is provided on the outer wall of the annular shell, and the marking text includes two fonts of "open" and "close".

[0015] Preferably, sealing rings are provided on both valve plates.

[0016] Preferably, the bottom end of the valve body shell is connected to a sewage pipe, and a sealing cover is detachably connected to the sewage pipe.

[0017] Preferably, slopes are provided at both ends of the inner bottom of the valve body shell.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] 1. The driving mechanism can drive the valve plates on both sides to rotate synchronously, and sealing rings are installed on the valve plates on both sides to achieve double sealing of the valve body. Compared with the lifting gate valve, its advantage is that it can reduce the friction of the valve plate and the friction of the sealing ring, so as to increase the service life of the valve plate and the sealing ring.

[0020] 2. The setting of the drive mechanism greatly reduces the space occupied by the drive mechanism installed outside the valve body shell, and the rotating ring and the bevel gear disc can be driven at any position through multiple arc-shaped rotating rods installed on the rotating ring, making it suitable for use in more complex installation spaces and can achieve control of the valve at multiple angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 It is a cross-sectional structural diagram of the present utility model.

[0023] Figure 3 It is a structural schematic diagram of the rotating ring and multiple arc-shaped rotating rods in the utility model.

[0024] Figure 4 for Figure 2 Schematic diagram of the local enlarged structure at point A.

[0025] Figure numerals: 1. valve body shell; 201. water inlet connecting pipe; 202. water outlet connecting pipe; 3. annular shell; 301. annular hole; 4. bevel gear outer cover; 5. valve plate; 6. sealing ring; 7. connecting rod; 8. threaded rod; 9. threaded sleeve; 10. first bevel gear; 11. bevel gear disk; 111. rotating ring; 12. mounting shaft; 131. second bevel gear; 132. third bevel gear; 14. drain pipe; 15. arrow; 16. marking text; 17. arc-shaped rotating rod; 18. magnet; 191. first rotating shaft; 192. second rotating shaft; 20. slope. DETAILED DESCRIPTION

[0026] Example 1

[0027] like Figures 1-4 As shown, the embodiment provides a gate valve with a swing-type quick opening and closing function in a central cavity, comprising a valve body shell 1 , a driving mechanism, two valve plates 5 and a plurality of arc-shaped rotating rods 17 .

[0028] The two ends of the valve body shell 1 are respectively connected with an inlet connecting pipe 201 and an outlet connecting pipe 202; the two valve plates 5 are respectively rotatably installed at the inner ends of the valve body shell 1; the two valve plates 5 are respectively provided with sealing rings 6, and the setting of the sealing rings 6 is used to improve the sealing between the valve plates 5 and the inner wall of the valve body shell 1.

[0029] The driving mechanism is used to drive the two valve plates 5 to rotate synchronously. The driving mechanism includes a first bevel gear 10, a bevel gear disc 11, a mounting shaft 12, a second bevel gear 131, two third bevel gears 132, two connecting rods 7, two threaded rods 8 and two threaded sleeves 9. Among them, the mounting shaft 12 is rotatably mounted on the upper end of the valve body shell 1. The mounting shaft 12 is also provided with a sealing ring to prevent water leakage at the connection between it and the valve body shell 1. The first bevel gear 10 and the second bevel gear 131 are both mounted on the mounting shaft 12. The bevel gear disc 11 is rotatably mounted on the outer periphery of the valve body shell 1. The center of the bevel gear disc 11 is a circular hole, and its overall structure is roughly annular. The side of the bevel gear disc 11 is connected There is a rotating ring 111, a bevel gear disk 11 is meshed with the first bevel gear 10, two threaded rods 8 are respectively rotatably installed on the inner ends of the valve body shell 1, the threads of the two threaded rods 8 are opposite, two third bevel gears 132 are respectively connected to the two threaded rods 8, the two third bevel gears 132 are both threadedly connected to the second bevel gear 131, two threaded sleeves 9 are respectively threadedly installed on the threaded rods 8 on both sides, two connecting rods 7 are respectively rotatably connected to the threaded sleeves 9 on both sides, and the other ends of the two connecting rods 7 are respectively rotatably connected to the valve plates 5 on both sides; a plurality of arc-shaped rotating rods 17 are installed on the rotating ring 111 along a ring array, and the arc-shaped rotating rods 17 are movably connected to the rotating ring 111.

[0030] The bottom end of the valve body shell 1 is connected to a drain pipe 14, and a sealing cover is detachably connected to the drain pipe 14. Opening the sealing cover can discharge the dirt inside the drain pipe 14; slopes 20 are provided at both ends of the inner bottom of the valve body shell 1. The setting of the slope can prevent impurities from accumulating on both sides of the inner bottom end of the valve body shell 1, so that impurities can flow into the interior of the drain pipe 14 in a concentrated manner.

[0031] In the present technical solution, the driving mechanism is set up to drive the valve plates 5 on both sides to rotate synchronously, and sealing rings 6 are installed on the valve plates 5 on both sides, which can realize double sealing of the valve body, and compared with the lifting gate valve, its advantage is that the friction of the valve plate 5 and the sealing ring 6 can be reduced to improve the service life of the valve plate 5 and the sealing ring 6; by driving the bevel gear 11 to rotate to drive the first bevel gear 10 to rotate, the synchronous driving of the threaded rods 8 on both sides is realized under the cooperation of the mounting shaft 12, the second bevel gear 131 and the third bevel gear 132. The arrangement of the above structure greatly reduces the occupied space of the driving mechanism installed outside the valve body housing 1, and the rotating ring 111 and the bevel gear 11 can be driven at any position by multiple arc-shaped rotating rods 17 installed on the rotating ring 111, making it suitable for use in more complex installation spaces.

[0032] Example 2

[0033] like Figure 1 and Figure 3 As shown, the present embodiment proposes a gate valve with a swing-type quick opening and closing in the middle cavity. Compared with the first embodiment, in the present embodiment, the arc-shaped rotating rod 17 and the rotating ring 111 are movably connected through the first rotating shaft 191 and the second rotating shaft 192. The first rotating shaft 191 is installed on the rotating ring 111 along the radial direction of the rotating ring 111, and the second rotating shaft 192 is vertically connected to the first rotating shaft 191, and the second rotating shaft 192 is rotatably connected to the arc-shaped rotating rod 17; when the bevel gear disk 11 is driven, the arc-shaped rotating rod 17 is moved to rotate 180 degrees around the first rotating shaft 191, and then the convex part of the arc-shaped rotating rod 17 is pressed against the surface of the rotating ring 111, and then the arc-shaped rotating rod 17 is pressed downward to drive the rotating ring 111 to rotate, thereby driving the bevel gear disk 11 to rotate, thereby realizing synchronous driving of the valve plates 5 on both sides.

[0034] A magnet 18 is provided on the arc-shaped rotating rod 17 , and the rotating ring 111 is an iron ring. The provision of the magnet 18 enables the arc-shaped rotating rod 17 to be adsorbed on the rotating ring 111 to prevent the arc-shaped rotating rod 17 from loosening.

[0035] An annular shell 3 and a bevel gear outer cover 4 are provided on the outer periphery of the valve body shell 1. The bevel gear disc 11 and the rotating ring 111 are both provided on the inner side of the annular shell 3. An annular hole 301 is provided on the annular shell 3. The first bevel gear 10 is provided on the inner side of the bevel gear outer cover 4. The annular shell 3 and the bevel gear outer cover 4 are provided to prevent the bevel gear disc 11 and the first bevel gear 10 from leaking out, thereby improving the aesthetics of the valve body.

[0036] An arrow 15 is provided on the rotating ring 111, and a marking text 16 is provided on the outer wall of the annular shell 3. The marking text 16 includes two fonts "open" and "close". The above structure is set to facilitate the operator to determine the opening and closing status of the valve body.

[0037] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A gate valve with a swing-type quick opening and closing function in the middle cavity, characterized in that: include: Valve body housing (1); Two valve plates (5), the two valve plates (5) are rotatably mounted on both ends of the inner side of the valve body shell (1); A driving mechanism for driving two valve plates (5) to rotate synchronously, the driving mechanism comprising a first bevel gear (10), a bevel gear disc (11), a mounting shaft (12), a second bevel gear (131), two third bevel gears (132), two connecting rods (7), two threaded rods (8) and two threaded sleeves (9), wherein the mounting shaft (12) is rotatably mounted on the upper end of the valve body housing (1), the first bevel gear (10) and the second bevel gear (131) are both mounted on the mounting shaft (12), the bevel gear disc (11) is rotatably mounted on the outer periphery of the valve body housing (1), and the side of the bevel gear disc (11) is connected to a rotating ring ( 111), the bevel gear disc (11) is meshedly connected with the first bevel gear (10), the two threaded rods (8) are respectively rotatably mounted on the inner ends of the valve body housing (1), the threads of the two threaded rods (8) are in opposite directions, the two third bevel gears (132) are respectively connected with the two threaded rods (8), the two third bevel gears (132) are both threadedly connected with the second bevel gear (131), the two threaded sleeves (9) are respectively threadedly mounted on the threaded rods (8) on both sides, the two connecting rods (7) are respectively rotatably connected with the threaded sleeves (9) on both sides, and the other ends of the two connecting rods (7) are respectively rotatably connected with the valve plates (5) on both sides; A plurality of arc-shaped rotating rods (17) are installed on the rotating ring (111) along an annular array, and the arc-shaped rotating rods (17) are movably connected to the rotating ring (111).

2. A gate valve with a swing-type rapid opening and closing function in the middle cavity according to claim 1, characterized in that: The arc-shaped rotating rod (17) and the rotating ring (111) are movably connected via a first rotating shaft (191) and a second rotating shaft (192). The first rotating shaft (191) is mounted on the rotating ring (111) in a radially rotatable manner along the rotating ring (111). The second rotating shaft (192) is vertically connected to the first rotating shaft (191). The second rotating shaft (192) is rotatably connected to the arc-shaped rotating rod (17).

3. A gate valve with a swing-type rapid opening and closing function in the middle cavity according to claim 2, characterized in that: An iron magnet (18) is provided on the arc-shaped rotating rod (17), and the rotating ring (111) is an iron ring.

4. A gate valve with a swing-type rapid opening and closing function in the middle cavity according to claim 3, characterized in that: An annular housing (3) and a bevel gear outer cover (4) are provided on the outer periphery of the valve body shell (1); a bevel gear disc (11) and a rotating ring (111) are both provided on the inner side of the annular housing (3); an annular hole (301) is provided on the annular housing (3); and a first bevel gear (10) is provided on the inner side of the bevel gear outer cover (4).

5. A gate valve with a swing-type rapid opening and closing function in the middle cavity according to claim 4, characterized in that: An arrow (15) is provided on the rotating ring (111), and marking characters (16) are provided on the outer wall of the annular housing (3), wherein the marking characters (16) include two fonts of "open" and "close".

6. A gate valve with a swing-type rapid opening and closing function in the middle cavity according to claim 1, characterized in that: Sealing rings (6) are provided on both valve plates (5).

7. A gate valve with a swing-type rapid opening and closing function in the middle cavity according to claim 1, characterized in that: The bottom end of the valve body shell (1) is connected to a sewage pipe (14), and a sealing cover is detachably connected to the sewage pipe (14).

8. A gate valve with a swing-type rapid opening and closing function in the middle cavity according to claim 7, characterized in that: Slopes (20) are provided at both ends of the inner bottom of the valve body shell (1).

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