Electric gate valve with good stability

Abstract

A connecting seat is arranged in the middle of the upper surface of a valve seat, the upper surface of the connecting seat is connected with the bottom of a valve cover through a flange, grooves are formed in the connecting positions of the connecting seat and the valve cover, a hole plate is arranged in the groove in the connecting position of the connecting seat and the valve cover, and a plurality of guide holes and through holes are formed in the hole plate. A fixing block is arranged at the top end of the gate plate, a T-shaped groove is formed in the fixing block, extending tables are arranged on the two sides of the fixing block, a plurality of guide rods are arranged at the top ends of the extending tables through bolts, and the guide rods correspond to the guide holes of the hole plate one to one and are in sliding fit with the guide holes of the hole plate. The gate valve is reasonable in structure, when the gate plate ascends and descends, the guide rod is matched with the guide hole of the pore plate, the stability of the gate plate is greatly improved, the situation that the gate plate inclines and loosens due to the fact that pressure is too large for a long time is avoided, and therefore the service life of the gate valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to valve technology, and specifically to an electric gate valve with good stability. Background Art

[0002] Electric gate valves use an electric actuator to control the valve, achieving opening and closing. They are divided into two parts: the upper half houses the electric actuator, and the lower half houses the valve. Electric gate valves feature adjustable opening and closing speeds, a simple structure, easy maintenance, sensitive response, and safety and reliability. The top of the gate disc of an electric gate valve is directly connected to the bottom of the valve stem. The electric actuator drives the stem to raise and lower the valve disc, thereby raising and lowering the valve disc. To ensure a better fit within the valve cavity, inclined partitions are used on either side of the valve disc. Consequently, in the prior art, the valve disc has an inverted trapezoidal shape. However, when this inverted trapezoidal structure is raised, its two sides become suspended. High pressure in the pipeline exposes the valve disc to horizontal pressure. Over time, the connection between the valve disc and the stem can loosen and become skewed, reducing the stability of the valve disc. This can lead to subsequent poor sealing and leakage, shortening the service life of the valve disc. Therefore, an improved technology is urgently needed to address the aforementioned issues in the prior art. Utility Model Content

[0003] The purpose of the utility model is to provide an electric gate valve with good stability. Extension platforms are provided on both sides of the fixed block on the upper surface of the gate plate. Guide rods are installed on the upper surface of the extension platforms. The connection between the connecting seat and the valve cover clamps an orifice plate. The guide rods are guided by the guide holes of the orifice plate. When the gate plate is raised or lowered, the guide rods cooperate with the guide holes of the orifice plate, which greatly improves the stability of the gate plate and avoids the situation where the gate plate is skewed and loosened due to long-term excessive pressure, thereby increasing the service life of the gate valve to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric gate valve with good stability, comprising a valve body, a connecting frame, a gate valve mechanism and an electric actuator;

[0005] The valve body includes a valve seat and a valve cover, a gate movable cavity is provided in the middle position of the valve seat, inclined partitions are provided on both sides of the gate movable cavity, and flow holes are penetrated by the inclined partitions, a connecting seat is provided in the middle position of the upper surface of the valve seat, the interior of the connecting seat is communicated with the interior of the valve seat, the upper surface of the connecting seat is connected to the bottom of the valve cover through a flange, a groove is provided at the connection between the connecting seat and the valve cover, an orifice plate is provided in the groove at the connection between the connecting seat and the valve cover, a plurality of guide holes and through holes are provided on the orifice plate, the top end of the valve cover is connected to the bottom end of the connecting frame through a flange, and the top end of the connecting frame is connected to the bottom of the electric actuator;

[0006] The gate valve mechanism includes a gate, a valve stem, a fixed block, an extension platform, a guide rod and a limit block. A fixed block is provided at the top of the gate, and the gate is movably arranged in the gate active cavity in the valve seat. The two sides of the gate cooperate with the oblique partitions on both sides of the gate active cavity. A T-shaped slot is provided on the fixed block, and extension platforms are provided on both sides of the fixed block. A plurality of guide rods are provided at the top of the extension platform through bolts. The guide rods correspond to the guide holes of the orifice plate one by one and slide together. A limit block is provided at the bottom end of the valve stem, and the limit block is inserted in the T-shaped slot of the fixed block. The valve stem is passed through the orifice plate, the valve cover and the connecting frame and is connected to the electric actuator.

[0007] Preferably, the utility model provides an electric gate valve with good stability, wherein a stuffing groove is provided on the top of the valve cover, and stuffing is provided in the stuffing groove.

[0008] Preferably, the utility model provides an electric gate valve with good stability, wherein the limit block is connected to the bottom of the valve stem by bolts.

[0009] Preferably, the utility model provides an electric gate valve with good stability, wherein a screw hole is provided through the bottom of the valve seat and located in the gate movable cavity, and a sealing cover is threadedly provided at the screw hole.

[0010] Preferably, the utility model provides an electric gate valve with good stability, wherein pipeline connecting flanges are provided at both ends of the valve seat.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] Extension platforms are set on both sides of the fixed block on the upper surface of the gate plate, and guide rods are installed on the upper surface of the extension platforms. The connection between the connecting seat and the valve cover clamps the orifice plate, and the guide rods cooperate with the guide holes of the orifice plate. When the gate plate is raised or lowered, the guide rods cooperate with the guide holes of the orifice plate, which greatly improves the stability of the gate plate and avoids the situation where the gate plate is skewed and loosened due to long-term excessive pressure, thereby increasing the service life of the gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 For attachment Figure 1 The enlarged structural diagram at the mark A in the middle;

[0015] Figure 3 Schematic diagram of the gate structure;

[0016] Figure 4 Schematic diagram of the orifice plate structure;

[0017] Figure 5 This is a schematic diagram of the utility model when the gate is in the open state.

[0018] In the figure: valve seat 1, valve cover 2, gate movable cavity 3, inclined partition 4, connecting seat 5, orifice plate 6, guide hole 7, through hole 8, connecting frame 9, electric actuator 10, gate 11, valve stem 12, fixing block 13, extension platform 14, guide rod 15, limit block 16, T-slot 17, packing 18, sealing cover 19, pipe connecting flange 20. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments and drawings of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0020] It should be noted that, in the description of the present invention, the terms "inside", "outside", "up", "down", "both sides", "one end", "the other end", "left", "right", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0021] See also Figure 1-4 , the utility model provides a technical solution: an electric gate valve with good stability, including a valve body, a connecting frame 9, a gate valve mechanism and an electric actuator 10;

[0022] The valve body includes a valve seat 1 and a valve cover 2. Pipe connection flanges 20 are provided at both ends of the valve seat 1 to realize the connection between the valve seat 1 and the pipeline. A gate activity cavity 3 is provided in the middle of the valve seat 1. An inclined partition 4 is provided on both sides of the gate activity cavity 3. The inclined partition 4 is penetrated by a flow channel hole. A connecting seat 5 is provided in the middle of the upper surface of the valve seat 1. The interior of the connecting seat 5 is communicated with the interior of the valve seat 1. The upper surface of the connecting seat 5 is connected to the bottom of the valve cover 2 through a flange. A groove is provided at the connection between the connecting seat 5 and the valve cover 2. An orifice plate 6 is provided in the groove at the connection between the connecting seat 5 and the valve cover 2. The orifice plate 6 has a number of guide holes. 7 and through hole 8, wherein the through hole 8 can realize the passage of liquid or gas to avoid excessive pressure when opening and closing the gate. The top of the valve cover 2 is connected to the bottom of a connecting frame 9 through a flange. The top of the valve cover 2 is provided with a packing groove, and a packing 18 is provided in the packing groove. The packing 18 is also pressed by the bottom of the connecting frame 9. The packing 18 is used to ensure the sealing of the connection between the top of the valve cover 2 and the valve stem 12. The top of the connecting frame 9 is connected to the bottom of the electric actuator 10. A screw hole is opened at the bottom of the valve seat 1 and is located at the gate active cavity 3. A sealing cover 19 is provided at the screw hole through a thread to facilitate cleaning of the gate active cavity 3;

[0023] The gate valve mechanism includes a gate 11, a valve stem 12, a fixed block 13, an extension platform 14, a guide rod 15 and a limit block 16. A fixed block 13 is provided on the top of the gate 11. The gate 11 is movably arranged in the gate activity cavity 3 in the valve seat 1. The two sides of the gate 11 cooperate with the oblique partitions 4 on both sides of the gate activity cavity 3. The fixed block 13 is provided with a T-shaped slot 17. Extension platforms 14 are provided on both sides of the fixed block 13. A number of guide rods 15 are provided on the top of the extension platform 14 through bolts. The guide rod 15 is connected to the extension platform 14 by bolts. The guide rod 15 corresponds to the guide hole 7 of the orifice plate 6 one by one and slides together. A limit block 16 is provided at the bottom end of the valve stem 12. The limit block 16 is connected to the bottom of the valve stem 12 by bolts to realize the connection and disassembly of the limit block 16 and the valve stem 12. The limit block 16 is inserted into the T-slot 17 of the fixing block 13. The valve stem 12 is passed through the orifice plate 6, the valve cover 2 and the connecting frame 9 and is connected with the action end of the electric actuator 10.

[0024] Assembly method and usage principle: First, place the packing 18 into the groove at the top of the valve cover 2, then connect the top of the valve stem 12 with the electric actuator 10, and then pass the valve stem 12 through the connecting frame 9, the packing 18 of the valve cover 2 and the orifice plate 6, and then install the limit block 16 on the bottom end of the valve stem 12 through bolts. At the same time, pass the guide rod 15 through the guide hole 7 of the orifice plate 6, and then insert the limit block 16 horizontally into the T-slot 17 of the fixing block 13 at the top of the gate plate 11, and then connect the bottom of the guide rod 15 to the extension platform 14 of the fixing block 13 through bolts. Connect the top of the connecting frame 9 to the electric actuator 10 through the flange, and connect the bottom of the connecting frame 9 to the valve cover 2 through the flange. Then insert the orifice plate 6 into the groove at the bottom of the valve cover 2, and insert the gate plate 11 into the gate active cavity 3 of the connecting seat 5 and the valve seat 1. Finally, connect the connecting seat 5 to the valve cover 2 through the flange, and insert the orifice plate 6 into the groove at the top of the connecting seat 5. Then install the sealing cover 19 at the screw hole at the bottom of the valve seat 1 to complete the assembly. When in use, the valve stem 12 is driven by the electric actuator 10 to rise and fall, and the rise and fall of the valve stem 12 drives the gate plate 11 to rise and fall. When the two sides of the gate plate 11 are tightly attached to the inclined partition 4 of the gate active cavity 3, the gate valve is in the closed state. When the gate plate 11 is lifted and separated from the inclined partition 4, the gate valve is open. Figure 5 As shown. When the gate plate 11 is raised or lowered, the guide rods 15 on the upper surfaces of the extension platforms 14 on both sides of the fixed block 13 slide and cooperate with the guide holes 7 of the orifice plate 6, thereby greatly improving the stability of the gate plate 11. The utility model has a reasonable structure. Extension platforms 14 are provided on both sides of the fixed block 13 on the upper surface of the gate plate 11. Guide rods 15 are installed on the upper surface of the extension platforms 14. The connection between the connecting seat 5 and the valve cover 2 clamps the orifice plate 6. The guide rods 15 guide and cooperate with the guide holes 7 of the orifice plate 6. When the gate plate 11 is raised or lowered, the guide rods 15 cooperate with the guide holes 7 of the orifice plate 6, greatly improving the stability of the gate plate 11, avoiding the situation where the gate plate 11 is skewed or loosened due to long-term excessive pressure, thereby improving the service life of the gate valve.

[0025] Anything not described in detail in the present invention is well known to those skilled in the art.

[0026] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An electric gate valve with good stability, characterized by: It comprises a valve body, a connecting frame (9), a gate valve mechanism and an electric actuator (10); The valve body comprises a valve seat (1) and a valve cover (2), a gate plate activity cavity (3) is provided in the middle position of the valve seat (1), inclined partitions (4) are provided on both sides of the gate plate activity cavity (3), and the inclined partitions (4) are provided with flow holes, a connecting seat (5) is provided in the middle position of the upper surface of the valve seat (1), the interior of the connecting seat (5) is communicated with the interior of the valve seat (1), the upper surface of the connecting seat (5) is connected to the bottom of the valve cover (2) through a flange, a groove is provided at the connection between the connecting seat (5) and the valve cover (2), an orifice plate (6) is provided in the groove at the connection between the connecting seat (5) and the valve cover (2), and a plurality of guide holes (7) and through holes (8) are provided on the orifice plate (6), the top end of the valve cover (2) is connected to the bottom end of the connecting frame (9) through a flange, and the top end of the connecting frame (9) is connected to the bottom of the electric actuator (10); The gate valve mechanism comprises a gate plate (11), a valve stem (12), a fixed block (13), an extension platform (14), a guide rod (15) and a limit block (16). The top of the gate plate (11) is provided with a fixed block (13). The gate plate (11) is movably provided in a gate plate movable cavity (3) in the valve seat (1). Both sides of the gate plate (11) cooperate with the inclined partitions (4) on both sides of the gate plate movable cavity (3). The fixed block (13) is provided with a T-shaped groove (17). The fixed block (13) Extension platforms (14) are provided on both sides, and a plurality of guide rods (15) are provided on the top of the extension platforms (14) through bolts. The guide rods (15) correspond to the guide holes (7) of the orifice plate (6) one by one and are slidably matched. A limit block (16) is provided at the bottom end of the valve stem (12), and the limit block (16) is inserted into the T-shaped slot (17) of the fixed block (13). The valve stem (12) is passed through the orifice plate (6), the valve cover (2) and the connecting frame (9) and is connected to the electric actuator (10).

2. The electric gate valve with good stability according to claim 1, characterized in that: A packing groove is provided at the top end of the valve cover (2), and packing (18) is provided in the packing groove.

3. The electric gate valve with good stability according to claim 1, characterized in that: The limit block (16) is connected to the bottom of the valve stem (12) via bolts.

4. The electric gate valve with good stability according to claim 1, characterized in that: A screw hole is provided through the bottom of the valve seat (1) and located at the gate active cavity (3), and a sealing cover (19) is threadedly provided at the screw hole.

5. The electric gate valve with good stability according to claim 1, characterized in that: Pipeline connection flanges (20) are provided at both ends of the valve seat (1).

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