Electric valve with anti-corrosion valve port

Abstract

The utility model provides an electrically operated valve with an anti-corrosion valve port, and relates to the technical field of electrically operated valves. The electric valve with the anti-corrosion valve port comprises a valve body and a driving box, a valve seat is fixedly connected to the interior of the valve body, and the portions, making contact with fluid, of the inner wall of the valve seat and the inner wall of the valve body are coated with metal ceramic paint. According to the device, the corrosion resistance of the inner wall of the valve body and the valve seat is improved through the arranged valve seat, the service life of the valve is prolonged, the driving motor is started to drive the valve rod to rotate under the meshing action of the driving gear and the connecting gear, and therefore circulation of fluid is controlled; the driving block falls to the periphery of the top of the valve rod, the movable sliding rod is driven to rotate, when the driving block abuts against the connecting rod, the valve rod is driven to rotate, the mode that manual control and electric control are combined is achieved, and when manual control is not needed, the manual control mechanism and the valve rod are in a separated state; and the influence of external mistaken touch on normal use of the valve is reduced.

Description

Technical Field

[0001] The utility model relates to a valve, in particular to an electric valve with anti-corrosion valve orifice, belonging to the technical field of electric valves. Background Technique

[0002] The valve orifice is a term in the valve, referring to the part through which the fluid passes in the valve. It is the key part for the valve to control the fluid flow direction, adjust the flow rate and pressure. According to its different functions, the valve can be divided into various types such as shut-off valves, check valves, regulating valves, etc., and can also be divided into manual valves and electric valves.

[0003] Chinese Patent Publication No. CN220668819U discloses a new type of anti-corrosion valve, including a valve body. A set of limit grooves are respectively opened on the inner sides of the valve body close to the front and the back. In the utility model, by installing a push plate, the staff first grabs the push plate and moves it upward, so that the push plate drives the spring to move backward, and the spring is compressed and deformed under the action of the push plate and the round groove. The push plate drives the insertion rod to move upward, so that the insertion rod moves out of the inner sides of the groove and the limit block, releasing the fixation of the limit block. Subsequently, the staff grabs the anti-corrosion pipe and moves it away from the rotating shaft, removes the anti-corrosion pipe from the inner side of the valve body, and inserts the limit block of the new anti-corrosion pipe into the limit groove.

[0004] However, the inventor believes that the above device has certain defects. The above device uses an electric method to drive the sealing plate to rotate to realize the opening and closing of the valve. Once the electric control mechanism has problems or a power outage, the valve cannot be opened or closed. If a rotating wheel is added to the top extension of the valve stem for manual drive, it is easily affected by external factors and rotates. Therefore, the utility model provides an electric valve with anti-corrosion valve orifice. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] The purpose of the utility model is to provide an electric valve with anti-corrosion valve orifice to solve the problem that the valve cannot be opened or closed when the electric control mechanism has problems or a power outage in the prior art.

[0007] (2) Technical Solutions

[0008] The present utility model is realized through the following technical solutions: an electric valve with valve port corrosion prevention, including a valve body and a drive box. A valve seat is fixedly connected inside the valve body. Metal ceramic coatings are applied to the parts of the valve seat and the inner wall of the valve body that come into contact with the fluid. A valve flap is rotatably connected inside the valve seat. A valve rod is fixedly connected to the valve flap. A sleeve is fixedly connected to the top of the valve body. The drive box is fixedly connected to the top of the sleeve. One end of the valve rod extends into the interior of the drive box through the sleeve. A drive mechanism for driving the valve rod to rotate is provided inside the drive box. The drive mechanism includes a drive motor fixed to the inner wall of the drive box. A drive gear is installed on the output rotating shaft of the drive motor. A connection gear is fixedly connected to the valve rod. The connection gear meshes with the drive gear. A top cover is installed on the top of the drive box. A rotating sleeve is rotatably connected to the top cover. An active slide rod is slidably connected inside the rotating sleeve. A connecting plate is fixedly connected to the bottom of the active slide rod. A drive block is fixedly connected to the bottom of the connecting plate. A connecting rod is fixedly connected to one end of the valve rod.

[0009] Preferably, a bolt is threadedly connected to the top cover. The top cover is detachably connected to the top of the drive box through the bolt. By removing the bolt on the top of the top cover, it is convenient to open the interior of the drive box.

[0010] Preferably, a spring is provided at the top of the rotating sleeve. The spring is sleeved on the active slide rod. By providing the spring, the active slide rod can quickly slide back to its original position when not under force.

[0011] Preferably, a controller is fixedly connected inside the drive box. The controller is electrically connected to the drive motor. By providing the controller, it is convenient to operate and control the drive motor.

[0012] Preferably, a gasket and a fixing bolt are provided at the top of the drive gear. The drive gear is detachably connected to the output rotating shaft of the drive motor through the fixing bolt. By removing the fixing bolt on the drive gear, it is convenient to separate the drive gear from the output rotating shaft of the drive motor.

[0013] Preferably, a filter screen is installed at the input end of the valve body. An installation block is fixedly connected to the inner wall of the valve body. The filter screen and the installation block are detachably connected through bolts. By providing the filter screen, the fluid entering the interior of the valve body can be filtered.

[0014] Preferably, flanges are fixedly connected to both ends of the valve body. A handwheel is fixedly connected to the top of the active slide rod. By providing the handwheel, it is convenient to drive the rotating sleeve to rotate on the drive box.

[0015] The present utility model provides an electric valve with valve port corrosion prevention, and its beneficial effects are as follows:

[0016] The device improves the corrosion resistance of the inner wall of the valve body and the valve seat through the set valve seat, extends the service life of the valve, drives the valve stem to rotate by starting the drive motor under the meshing action of the drive gear and the connecting gear, so as to control the flow of the fluid. By pushing the movable slide rod downward, the drive block falls to the periphery of the top of the valve stem, and by driving the movable slide rod to rotate, when the drive block abuts against the connecting rod, the valve stem is driven to rotate, realizing a combination of manual control and electric control. And when manual control is not required, the manual control mechanism is separated from the valve stem, reducing the normal use of the valve affected by external accidental touch.

[0017] Through the set spring, the device enables the movable slide rod to quickly slide back to its original position when not under force, causing the drive block to lift from the periphery of the top of the valve stem. By removing the bolts on the top cover, the top of the drive box is opened, and then by removing the fixing bolts on the top of the drive gear, the drive gear is separated from the drive motor, facilitating the lubrication or replacement of the drive gear, improving the gear transmission efficiency, and extending the service life of the electric control. Brief Description of the Drawings

[0018] Figure 1 is the overall three-dimensional view of the present utility model;

[0019] Figure 2 is the cross-sectional view of the valve body and the drive box of the present utility model;

[0020] Figure 3 is the internal three-dimensional view of the drive box of the present utility model;

[0021] Figure 4 is the structural schematic diagram of the present utility model.

[0022]

Description of the Main Component Symbols

[0023] 1. Valve body; 11. Valve seat; 12. Valve flap; 2. Sleeve; 3. Valve stem; 31. Connecting gear; 32. Connecting rod; 4. Drive box; 41. Top cover; 5. Drive motor; 51. Drive gear; 6. Rotating sleeve; 61. Movable slide rod; 62. Connecting plate; 63. Drive block; 64. Spring; 7. Controller; 8. Cermet coating; 9. Filter screen; 91. Mounting block. Detailed Embodiment

[0024] The embodiment of the present utility model provides an electric valve for valve port corrosion prevention.

[0025] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, an electric valve with valve port anti-corrosion, including a valve body 1 and a drive box 4. Inside the valve body 1, a valve seat 11 is fixedly connected. The parts of the valve seat 11 and the inner wall of the valve body 1 that come into contact with the fluid are both coated with cermet coating 8. Inside the valve seat 11, a valve flap 12 is rotatably connected. A valve stem 3 is fixedly connected to the valve flap 12. By rotating the valve stem 3, the valve flap 12 is flipped inside the valve seat 11 to control the flow of the fluid. The cermet coating 8 provided is a highly efficient and multifunctional anti-corrosion solution, with excellent corrosion resistance, high temperature resistance, wear resistance and environmental friendliness, improving the anti-corrosion property of the valve body 1 and the valve seat 11 and extending their service life.

[0026] Please refer to again Figure 1 , Figure 2 , Figure 3 and Figure 4 , a sleeve 2 is fixedly connected to the top of the valve body 1. The drive box 4 is fixedly connected to the top of the sleeve 2. One end of the valve stem 3 extends into the drive box 4 through the sleeve 2. Inside the drive box 4, a drive mechanism for rotating the valve stem 3 is provided. The drive mechanism includes a drive motor 5 fixed to the inner wall of the drive box 4. A drive gear 51 is installed on the output rotating shaft of the drive motor 5. A connecting gear 31 is fixedly connected to the valve stem 3. The connecting gear 31 meshes with the drive gear 51. By starting the drive motor 5 to drive the drive gear 51 to rotate, the valve stem 3 is driven to rotate under the meshing action of the drive gear 51 and the connecting gear 31. A gasket and a fixing bolt are provided at the top of the drive gear 51. The drive gear 51 is detachably connected to the output rotating shaft of the drive motor 5 through the fixing bolt. A rectangular bar is fixedly connected to the output rotating shaft of the drive motor 5. A rectangular groove adapted to the rectangular bar on the output rotating shaft of the drive motor 5 is opened on the inner wall of the drive gear 51. This structure is prior art and will not be described in detail. Therefore, by starting the drive motor 5 to drive the drive gear 51 to rotate, the fixing bolt and gasket provided play a role in pressing and fixing the drive gear 51. By removing the fixing bolt on the drive gear 51, it is convenient to remove the drive gear 51 from the output rotating shaft of the drive motor 5 for lubrication, maintenance or replacement.

[0027] Please refer to again Figure 1 , Figure 2 , Figure 3 and Figure 4 , a top cover 41 is installed on the top of the drive box 4. Bolts are threadedly connected to the top cover 41. The top cover 41 is detachably connected to the top of the drive box 4 through the bolts. By removing the bolts on the top cover 41, it is convenient to remove the top cover 41 from the top of the drive box 4 to maintain and repair the inside of the drive box 4. A controller 7 is fixedly connected inside the drive box 4. The controller 7 is electrically connected to the drive motor 5. The controller 7 provided facilitates the control operation of the drive motor 5.

[0028] Please refer to againFigure 1 , Figure 2 , Figure 3 and Figure 4 , a rotating sleeve 6 is rotatably connected to the top cover 41. An active sliding rod 61 is slidably connected inside the rotating sleeve 6. A connecting plate 62 is fixedly connected to the bottom of the active sliding rod 61. A driving block 63 is fixedly connected to the bottom of the connecting plate 62. One end of the valve stem 3 is fixedly connected to a connecting rod 32. The active sliding rod 61 is a rectangular column. By driving the active sliding rod 61 to rotate, the rotating sleeve 6 is driven to rotate on the driving box 4. By pushing one end of the active sliding rod 61 to descend, the driving block 63 falls around the top of the valve stem 3. By driving the active sliding rod 61 to rotate, the driving block 63 pushes the connecting rod 32 to rotate, thereby pushing the valve stem 3 to rotate, achieving the effect of manual control. A spring 64 is provided at the top of the rotating sleeve 6. The spring 64 is sleeved on the active sliding rod 61. When manual control is not required, the active sliding rod 61 is quickly driven to rise and reset by the rebound of the spring 64, so that the manual control mechanism is separated from the valve stem 3, reducing the influence of external accidental touch on the normal use of the valve.

[0029] Please refer to again Figure 1 and Figure 2 , a filter screen 9 is installed at the input end of the valve body 1. An installation block 91 is fixedly connected to the inner wall of the valve body 1. The filter screen 9 and the installation block 91 are detachably connected by bolts. By providing the filter screen 9, the fluid flowing into the valve body 1 is filtered, and the impurities in the fluid are filtered out to prevent the impurities from impacting the inner wall of the valve body 1. Flanges are fixedly connected to both ends of the valve body 1. By providing the flanges, it is convenient to connect the device to the pipeline. A handwheel is fixedly connected to the top of the active sliding rod 61. By providing the handwheel, it is convenient to drive the active sliding rod 61 to rotate.

[0030] Working principle: The device is installed on the pipeline through the flange. By starting the driving motor 5 to drive the driving gear 51 to rotate, the valve stem 3 is driven to rotate under the meshing action of the driving gear 51 and the connecting gear 31, so that the valve flap 12 is flipped inside the valve body 1 to make the fluid in the pipeline flow through. The filter screen 9 filters the impurities in the fluid. When a power failure or the driving motor 5 fails, by pressing the top of the active sliding rod 61, the bottom of the active sliding rod 61 slides downward, so that the driving block 63 falls around the top of the valve stem 3. By driving the active sliding rod 61 to rotate, the driving block 63 pushes the connecting rod 32 to rotate, thereby pushing the valve stem 3 to rotate, achieving the effect of manually opening and closing the valve flap 12. When the active sliding rod 61 is not stressed, the active sliding rod 61 is quickly driven to rise and slide back to its original position by the rebound of the spring 64, separating the manual control from the valve stem 3 to prevent external accidental touch of the rotating wheel at the top of the active sliding rod 61.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed for the present utility model is defined by the appended claims and their equivalents.

Claims

1. An electric valve with a valve port anti-corrosion, comprising a valve body (1) and a drive box (4), characterized in that: The valve body (1) is fixedly connected to a valve seat (11) inside, and the valve seat (11) and the parts of the inner wall of the valve body (1) that are in contact with the fluid are coated with a metal ceramic coating (8). The valve seat (11) is rotatably connected to a valve flap (12) inside, and a valve stem (3) is fixedly connected to the valve flap (12). The top of the valve body (1) is fixedly connected to a sleeve (2), and the drive box (4) is fixedly connected to the top of the sleeve (2). One end of the valve stem (3) extends through the sleeve (2) to the inside of the drive box (4). A drive mechanism for driving the valve stem (3) to rotate is provided inside the drive box (4), and the drive mechanism includes a valve member fixed to the inner wall of the drive box (4). A driving motor (5) is provided, wherein a driving gear (51) is mounted on the output shaft of the driving motor (5), a connecting gear (31) is fixedly connected to the valve stem (3), the connecting gear (31) meshes with the driving gear (51), a top cover (41) is mounted on the top of the driving box (4), a rotating sleeve (6) is rotatably connected to the top cover (41), a movable sliding rod (61) is slidably connected inside the rotating sleeve (6), a connecting plate (62) is fixedly connected to the bottom of the movable sliding rod (61), a driving block (63) is fixedly connected to the bottom of the connecting plate (62), and one end of the valve stem (3) is fixedly connected to the connecting rod (32).

2. The electric valve with valve port corrosion protection according to claim 1, characterized in that: Bolts are threadedly connected to the top cover (41), and the top cover (41) is detachably connected to the top of the drive box (4) via the bolts.

3. The electric valve with valve port corrosion protection according to claim 1, characterized in that: A spring (64) is provided at the top of the rotating sleeve (6), and the spring (64) is sleeved on the movable sliding rod (61).

4. The electric valve with valve port corrosion protection according to claim 1, characterized in that: A controller (7) is fixedly connected to the interior of the drive box (4), and the controller (7) is electrically connected to the drive motor (5).

5. The electric valve with valve port corrosion protection according to claim 1, characterized in that: A gasket and a fixing bolt are provided on the top of the driving gear (51), and the driving gear (51) is detachably connected to the output shaft of the driving motor (5) via the fixing bolt.

6. The electric valve with valve port corrosion protection according to claim 1, characterized in that: A filter screen (9) is installed at the input end of the valve body (1), a mounting block (91) is fixedly connected to the inner wall of the valve body (1), and the filter screen (9) and the mounting block (91) are detachably connected via bolts.

7. The electric valve with valve port corrosion protection according to claim 1, characterized in that: Both ends of the valve body (1) are fixedly connected to flanges, and the top of the movable sliding rod (61) is fixedly connected to a hand wheel.

Images