Discharging valve

Abstract

The invention relates to the technical field of valve devices, and particularly discloses a discharge valve which comprises a valve body, a valve rod, a valve seat, a valve clack, a protective baffle, a cleaning assembly and a driving assembly, the valve rod is arranged in the valve body in a lifting mode, the driving assembly is arranged on the valve body, the valve clack is fixedly arranged at the bottom end of the valve rod, and the valve seat is arranged in the valve body. A protection box is arranged on the peripheral face of the valve body, the protection baffle is arranged in the protection box in a sliding mode, the cleaning assembly is arranged at the top of the protection baffle, and the cleaning assembly can clean dry and hard materials on the sealing face of the valve clack. According to the discharging valve, solid particles in high-speed flowing materials are prevented from colliding with the contact face on the valve clack, so that the service life of the valve clack is prolonged, meanwhile, the sealing effect of the valve clack and the valve seat can be guaranteed, and the situation that the sealing effect is affected by dry and hard materials is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of valve devices, and in particular to a discharge valve. Background Art

[0002] The Y-type discharge valve is a valve used to control material discharge. It is mainly suitable for alumina ore discharge devices. The discharge valve is also called a feed valve, slurry valve, etc. It is usually used in pipeline systems in chemical, petroleum, pharmaceutical and other industries. The Y-type discharge valve usually drives the valve stem up and down by rotating the handwheel, thereby driving the valve disc to make linear motion to realize the opening and closing of the valve. When the valve stem rises, the valve disc leaves the valve seat, the fluid channel opens, and the medium can flow; when the valve stem descends, the valve disc presses the valve seat, the fluid channel closes, and the medium stops flowing.

[0003] A Chinese patent application document with publication number CN112283357A discloses a discharge bottom valve, including a valve body, a bottom valve installed at the front inlet of the valve body, the bottom valve including a pressure plate installed on the front inlet end face, a valve disc matched with the inner cavity of the valve body, and a valve stem for opening the valve disc, an elastic member is sleeved on the valve disc, and the elastic member is squeezed between the valve disc and the pressure plate; a valve stem driving device is also provided, including a box body, a driving gear and a driven gear meshing with each other installed in the box body, the outer diameter of the driven gear is larger than the outer diameter of the driving gear, the driven gear is fixedly connected to the valve stem, and the driving gear is rotatably arranged on a first pin shaft arranged on the box body; a driving gear driving device is arranged on the driving gear, and the patent application document is used to solve the technical problem that the existing discharge bottom valve cannot be slowly opened.

[0004] The above patent application document solves the technical problem that the existing unloading bottom valve cannot be opened slowly by setting an active gear driving device on the active gear. However, when the existing unloading valve is opened to discharge the material, the material flows at a relatively fast speed, and some materials may contain solid particles. When the material is unloaded, the solid particles in the high-speed flowing material will flush the valve disc surface, and the solid particles will hit the valve disc surface during the flow. Long-term flushing can easily cause scratches on the valve disc surface, thereby easily reducing the sealing performance of the valve disc and the valve seat, and reducing the service life of the valve disc. After the company uses the unloading valve for a long time, it is necessary to regularly polish the sealing surfaces of the valve disc and the valve seat, which increases the economic cost of the company. Summary of the invention

[0005] The present invention provides a discharge valve, aiming to solve the technical problem in the related art that long-term flushing easily causes scratches on the valve disc surface, thereby easily causing the sealing performance of the valve disc and the valve seat to decrease, and at the same time shortening the service life of the valve disc.

[0006] A discharge valve of the present invention comprises: a valve body, which is Y-shaped, and the feed port and the discharge port of the valve body are both connected to the pipeline, and also comprises: a valve stem, a valve seat, a valve disc, a protective baffle, a cleaning component and a driving component, the valve stem is lifted and arranged inside the valve body, the driving component is arranged on the valve body, and the driving component can drive the valve stem to move up and down, the valve disc is fixedly arranged at the bottom end of the valve stem, the valve seat is arranged inside the valve body, and the valve seat is located below the valve disc, the valve disc and the valve seat can realize the opening and closing of the valve by cooperation, the outer peripheral surface of the valve body is provided with a protective box, the protective baffle is slidably arranged inside the protective box, and the protective baffle can slide to the inside of the valve body, so that when the valve is opened to discharge the material, the protective baffle can be passed through the protective baffle to avoid the high-speed flowing material from directly contacting the valve disc, the cleaning component is arranged on the top of the protective baffle, and the cleaning component can clean the dried material on the sealing surface of the valve disc.

[0007] The beneficial effects of the present invention are: preventing solid particles in high-speed flowing materials from colliding with the contact surface on the valve disc, thereby increasing the service life of the valve disc, while ensuring the sealing effect between the valve disc and the valve seat, and preventing dried materials from affecting the sealing effect.

[0008] Preferably, the outer circumferential surface of the valve stem is provided with a thread, a fixing plate is provided on the top of the valve body, and the valve body and the fixing plate are fixedly connected by bolts, a support frame is symmetrically provided on the top of the fixing plate, and sliding bars are fixedly provided on two opposite side walls of the support frame, and sliding grooves are symmetrically provided on the outer circumferential surface of the valve stem, and the sliding bars are located inside the sliding grooves, a connecting plate is provided on the top of the support frame, and a fixing sleeve is provided on the top of the connecting plate, a rotating cylinder is rotatably provided on the inner annular surface of the fixing sleeve, and the valve stem is threadedly connected and cooperated with the rotating cylinder.

[0009] Preferably, the driving assembly includes: a motor, a first bevel gear and a second bevel gear, a support plate is provided on the outer circumferential surface of the fixed sleeve, the motor is arranged on the side wall of the support plate, a rotating shaft is provided at the output end of the motor, the second bevel gear is arranged at one end of the rotating shaft, a circular ring is fixedly provided on the outer circumferential surface of the rotating cylinder, and an annular groove is provided on the inner annular surface of the fixed sleeve, and the circular ring is located in the annular groove, the first bevel gear is provided on the outer circumferential surface of the rotating cylinder, and the first bevel gear is meshed with the second bevel gear.

[0010] Preferably, a protection box is provided on the outer peripheral surface of the valve body, a protection baffle is slidably arranged inside the protection box, and the protection baffle is in the shape of a circular plate, and the cleaning component is arranged on the top of the protection baffle.

[0011] The effect is that the sealing surface of the valve disc can be protected and the service life of the valve disc can be extended.

[0012] Preferably, the cleaning assembly comprises: a motor and a grinding bowl, the motor is arranged at the center position inside the protective baffle, the grinding bowl is rotatably arranged on the top of the protective baffle, and the output end of the motor is transmission-connected to the bottom of the grinding bowl.

[0013] The effect is that the cleaning component can clean the sealing surface of the valve disc, avoid the influence of dry materials on the sealing effect, and ensure the sealing of the valve.

[0014] Preferably, an arc-shaped groove is provided on the outer peripheral surface of the valve body, and the protective baffle can enter into the interior of the valve body through the arc-shaped groove. A sealing baffle is provided on the outer peripheral surface of the protective baffle, and the sealing baffle is in an arc shape.

[0015] Preferably, a pressure sensor is provided inside the inner ring surface of the valve body, and the pressure sensor is used to feedback a signal so that the protective baffle protects the valve disc. A telescopic rod is provided on the outer wall of the protective box, and the telescopic rod is connected to the side wall of the sealing baffle.

[0016] The effect is that the pressure sensor can feed back signals to the telescopic rod and the cleaning component to achieve valve flap protection and cleaning.

[0017] Preferably, a drainage hole is provided on the sealing baffle to allow the material in the chamber to flow into the interior of the protection box, and the inner bottom surface of the protection box is a conical inclined surface.

[0018] The effect is that the cleaning component can clean the sealing surface of the valve disc normally, ensure the sealing effect between the valve disc and the valve seat, and avoid the influence of dried materials on the sealing effect.

[0019] The beneficial effects of the present invention are: When it is necessary to discharge materials, the driving assembly can drive the valve stem to move upward, and the upward movement of the valve stem drives the valve disc to move upward. The upward movement of the valve disc causes the valve disc to separate from the valve seat, so that the valve opens the flow of logistics to discharge. When the valve disc moves upward to above the horizontal position of the protective baffle, the protective baffle can slide from the protective box to the inside of the valve body, and the protective baffle can slide to just below the valve disc, so that a protective cavity is formed on the top of the protective baffle, and the valve disc is inside the protective cavity, so as to avoid solid particles in the high-speed flowing material from colliding with the contact surface on the valve disc, thereby increasing the service life of the valve disc and ensuring the sealing of the valve disc and the valve seat. When the valve needs to be closed, the cleaning assembly will clean the contact surface of the valve disc to avoid dry materials adhering to the contact surface, causing the sealing effect of the valve disc and the valve seat to be reduced, thereby ensuring the sealing of the valve disc and the valve seat each time they are opened and closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the valve stem structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the second bevel gear structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the pressure sensor of the present invention.

[0024] Figure 5 The present invention Figure 4 Enlarged view of point A in the middle.

[0025] Figure 6 It is a schematic diagram of the protective baffle structure of the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the collection box of the present invention.

[0027] Reference numerals: 10. Valve body; 11. Fixed plate; 12. Support frame; 13. Connecting plate; 14. Fixed sleeve; 20. Support plate; 21. Motor; 22. Rotating shaft; 23. Second bevel gear; 24. Rotating cylinder; 25. Ring; 26. First bevel gear; 27. Slide groove; 28. Slide bar; 30. Valve stem; 31. Valve disc; 32. Valve seat; 40. Protection box; 41. Protection baffle; 42. Motor; 43. Grinding bowl; 44. Sealing baffle; 45. Telescopic rod; 48. Drain hole; 49. Collecting box; 50. Arc groove; 51. Pressure sensor. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] like Figures 1 to 6 As shown, a discharge valve of the present invention comprises: a valve body 10, the valve body 10 is Y-shaped, and the feed port and the discharge port of the valve body 10 are both connected to the pipeline, and also comprises: a valve stem 30, a valve seat 32, a valve disc 31, a protective baffle 41, a cleaning component and a driving component, the valve stem 30 is lifted and arranged inside the valve body 10, the driving component is arranged on the valve body 10, and the driving component can drive the valve stem 30 to move up and down, the valve disc 31 is fixedly arranged at the bottom end of the valve stem 30, and the valve disc 31 can follow the valve stem 30 to rise and fall, and the valve seat 32 is arranged inside the valve body 10. The valve seat 32 is located below the valve disc 31. The valve disc 31 cooperates with the valve seat 32 to realize valve switching to control material unloading or stop unloading. A protective box 40 is provided on the outer peripheral surface of the valve body 10. The protective baffle 41 is slidably arranged inside the protective box 40, and the protective baffle 41 can slide to the inside of the valve body 10 so that the material passes through the protective baffle 41 during unloading to prevent high-speed flowing material from directly contacting the valve disc 31. A cleaning component is arranged on the top of the protective baffle 41, and the cleaning component can clean the dried material on the sealing surface of the valve disc 31.

[0030] When it is necessary to discharge the material, the driving assembly can drive the valve stem 30 to move upward, and the upward movement of the valve stem 30 drives the valve disc 31 to move upward. The upward movement of the valve disc 31 causes the valve disc 31 to separate from the valve seat 32, so that the valve opens the material flow to discharge. When the valve disc 31 moves upward to above the horizontal position of the protective baffle 41, the protective baffle 41 can slide from the protective box 40 to the inside of the valve body 10, and the protective baffle 41 can slide to just below the valve disc 31, so that a protective cavity is formed on the top of the protective baffle 41, and the valve disc 31 is inside the protective cavity, so as to prevent solid particles in the high-speed flowing material from colliding with the contact surface on the valve disc 31, thereby improving the service life of the valve disc 31 and ensuring the sealing performance of the valve disc 31 and the valve seat 32. When it is necessary to close the valve, the cleaning assembly cleans the contact surface of the valve disc 31 to prevent dry materials from adhering to the contact surface, causing the sealing effect of the valve disc 31 and the valve seat 32 to be reduced, thereby ensuring the sealing performance of the valve disc 31 and the valve seat 32 each time they are opened and closed.

[0031] like Figures 1 to 4 As shown, the outer circumferential surface of the valve stem 30 is provided with a thread, the top of the valve body 10 is provided with a fixing plate 11, and the valve body 10 and the fixing plate 11 are connected by bolts, the top of the fixing plate 11 is symmetrically provided with a support frame 12, and the two opposite side walls of the support frame 12 are fixedly provided with a slide bar 28, the outer circumferential surface of the valve stem 30 is symmetrically provided with a slide groove 27, and the slide bar 28 is located inside the slide groove 27, so as to play a limiting and guiding role for the valve stem 30, the top of the support frame 12 is provided with a connecting plate 13, the top of the connecting plate 13 is provided with a fixing sleeve 14, the inner annular surface of the fixing sleeve 14 is rotatably provided with a rotating cylinder 24, and the valve stem 30 is threadedly connected and matched with the rotating cylinder 24.

[0032] The driving assembly includes: a motor 21, a first bevel gear 26 and a second bevel gear 23. A support plate 20 is provided on the outer circumference of the fixed sleeve 14. The motor 21 is arranged on the side wall of the support plate 20. A rotating shaft 22 is provided at the output end of the motor 21. The second bevel gear 23 is arranged at one end of the rotating shaft 22. A circular ring 25 is fixedly provided on the outer circumference of the rotating cylinder 24, and an annular groove is provided on the inner ring surface of the fixed sleeve 14. The circular ring 25 is located in the annular groove, so that the rotation of the circular ring 25 is more stable. The first bevel gear 26 is arranged on the outer circumference of the rotating cylinder 24, and the first bevel gear 26 is meshed with the second bevel gear 23.

[0033] When the valve needs to be opened and closed, the motor 21 can drive the rotating shaft 22 to rotate, and the rotation of the rotating shaft 22 drives the second bevel gear 23 to rotate. Since the first bevel gear 26 is meshed with the second bevel gear 23, the rotation of the second bevel gear 23 drives the first bevel gear 26 to rotate, and the rotation of the first bevel gear 26 drives the rotating drum 24 to rotate. The rotating drum 24 is threadedly connected to the valve stem 30 to make the valve stem 30 move up and down. The movement of the valve stem 30 drives the valve flap 31 at the bottom to move, so that the valve flap 31 is connected or disengaged from the valve seat 32, thereby realizing the opening and closing of the valve to discharge.

[0034] like Figures 2 to 6 As shown, a protective box 40 is provided on the outer peripheral surface of the valve body 10, a protective baffle 41 is slidably arranged inside the protective box 40, and the protective baffle 41 is in the shape of a circular plate, a cleaning component is arranged on the top of the protective baffle 41, and the cleaning component includes: a motor 42 and a grinding bowl 43, the motor 42 is arranged at the center position inside the protective baffle 41, the grinding bowl 43 is rotatably arranged on the top of the protective baffle 41, and the output end of the motor 42 is fixedly connected to the bottom of the grinding bowl 43.

[0035] An arc groove 50 is provided on the outer peripheral surface of the valve body 10, and the protective baffle 41 can enter into the interior of the valve body 10 through the arc groove 50 to protect the valve disc 31. A sealing baffle 44 is provided on the outer peripheral surface of the protective baffle 41. The sealing baffle 44 is arc-shaped and can cover the arc groove 50. A pressure sensor 51 is provided on the inner ring surface of the valve body 10. The pressure sensor 51 is used to feedback the signal so that the protective baffle 41 can protect the valve disc 31. A telescopic rod 45 is provided on the outer wall of the protective box 40, and the telescopic rod 45 is connected to the side wall of the sealing baffle 44.

[0036] When the valve stem 30 drives the valve flap 31 to move upward to open the valve, since there is a slope on the outer peripheral surface of the valve flap 31, when the valve flap 31 moves to the position of the pressure sensor 51, the slope of the valve flap 31 will squeeze the pressure sensor 51. Therefore, the pressure sensor 51 can feed back a signal to the controller inside the telescopic rod 45, so that the controller controls the telescopic rod 45 to extend, so that the telescopic rod 45 pushes the protective baffle 41 from the inside of the protective box 40 to the inside of the valve body 10, thereby preventing high-speed flowing materials from directly colliding with the valve flap 31, thereby increasing the service life of the valve flap 31.

[0037] At the same time, after the protective baffle 41 moves to the inside of the valve body 10, the top of the protective baffle 41 will form a chamber with the bottom of the fixed plate 11. At this time, a certain amount of material remains in the chamber. Therefore, a drainage hole 48 is opened on the sealing baffle 44 to allow the material in the chamber to flow into the inside of the protective box 40. The inner bottom surface of the protective box 40 is a conical slope so that the material flows toward the center of the conical slope. A collecting box 49 is provided at the bottom of the protective box 40 (refer to Figure 7), the collecting box 49 is located directly below the center of the conical slope to collect the material, and a spraying device is provided on the top of the protective box 40, which can flush the material on the conical slope and clean the conical slope, the protective baffle 41 and the cleaning component.

[0038] When the valve stem 30 drives the valve disc 31 to move downward to close the valve, the movement stroke of the valve stem 30 is divided into two stages. First, when the valve stem 30 drives the valve disc 31 to move downward to the position of the pressure sensor 51, this stroke is the first stroke, and the valve disc 31 will squeeze the pressure sensor 51. During the second squeezing, the pressure sensor 51 will feed back the signal to the motor 42, and the motor 42 drives the grinding bowl 43 to rotate. The inner wall of the grinding bowl 43 is provided with a grinding sheet, which can grind the contact surface of the valve disc 31, thereby removing the material particles that have been dried on the contact surface of the valve disc 31 for a long time, ensuring that the valve disc 31 and the valve seat 32 have a sealing effect. After the grinding is completed, the valve stem 30 drives the valve disc 31 to move upward again, thereby canceling the squeezing of the pressure sensor 51. At this time, the controller controls the telescopic rod 45 to contract, so that the protective baffle 41 moves to the inside of the protective box 40. The valve stem 30 drives the valve disc 31 to move downward again until it moves to the valve disc 31 and the valve seat 32 to seal. This stroke is the second stroke, which can protect the valve disc 31 and increase the service life of the valve disc 31. At the same time, it can ensure the sealing effect of the valve disc 31 and the valve seat 32 to prevent the dry material from affecting the sealing effect.

[0039] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A discharge valve, comprising: The valve body (10) is Y-shaped, and the feed inlet and the discharge outlet of the valve body (10) are both connected to the pipeline, and is characterized in that it also includes: a valve stem (30), a valve seat (32), a valve flap (31), a protective baffle (41), a cleaning component and a driving component, the valve stem (30) is arranged to be lifted inside the valve body (10), the driving component is arranged on the valve body (10), and the driving component can drive the valve stem (30) to move up and down, the valve flap (31) is fixedly arranged at the bottom end of the valve stem (30), the valve seat (32) is arranged inside the valve body (10), and the valve seat (32) Located below the valve disc (31), the valve disc (31) cooperates with the valve seat (32) to realize the opening and closing of the valve. A protective box (40) is provided on the outer peripheral surface of the valve body (10). The protective baffle (41) is slidably arranged inside the protective box (40), and the protective baffle (41) can slide into the inside of the valve body (10), so that when the valve is opened to discharge materials, the protective baffle (41) is passed through the protective baffle (41), thereby preventing high-speed flowing materials from directly contacting the valve disc (31). A cleaning component is arranged on the top of the protective baffle (41), and the cleaning component can clean the dried materials on the sealing surface of the valve disc (31).

2. A discharge valve according to claim 1, characterized in that: The outer peripheral surface of the valve stem (30) is provided with threads, a fixing plate (11) is provided on the top of the valve body (10), and the valve body (10) and the fixing plate (11) are fixedly connected by bolts, a support frame (12) is symmetrically provided on the top of the fixing plate (11), and two opposite side walls of the support frame (12) are fixedly provided with sliding bars (28), the outer peripheral surface of the valve stem (30) is symmetrically provided with sliding grooves (27), and the sliding bars (28) are located inside the sliding grooves (27), a connecting plate (13) is provided on the top of the support frame (12), a fixing sleeve (14) is provided on the top of the connecting plate (13), a rotating cylinder (24) is rotatably provided on the inner annular surface of the fixing sleeve (14), and the valve stem (30) and the rotating cylinder (24) are threadedly connected and matched.

3. A discharge valve according to claim 2, characterized in that: The driving assembly comprises: a motor (21), a first bevel gear (26) and a second bevel gear (23); a support plate (20) is arranged on the outer circumferential surface of the fixed sleeve (14); the motor (21) is arranged on the side wall of the support plate (20); a rotating shaft (22) is arranged at the output end of the motor (21); the second bevel gear (23) is arranged at one end of the rotating shaft (22); a circular ring (25) is fixedly arranged on the outer circumferential surface of the rotating cylinder (24); an annular groove is formed on the inner annular surface of the fixed sleeve (14); and the circular ring (25) is located in the annular groove; the first bevel gear (26) is arranged on the outer circumferential surface of the rotating cylinder (24); and the first bevel gear (26) is meshed with the second bevel gear (23).

4. A discharge valve according to claim 3, characterized in that: A protection box (40) is provided on the outer peripheral surface of the valve body (10), a protection baffle (41) is slidably arranged inside the protection box (40), and the protection baffle (41) is in the shape of a circular plate, and a cleaning component is arranged on the top of the protection baffle (41).

5. A discharge valve according to claim 4, characterized in that: The cleaning assembly comprises: a motor (42) and a grinding bowl (43); the motor (42) is arranged at a central position inside the protective baffle (41); the grinding bowl (43) is rotatably arranged on the top of the protective baffle (41); and the output end of the motor (42) is transmission-connected to the bottom of the grinding bowl (43).

6. A discharge valve according to claim 5, characterized in that: The outer circumferential surface of the valve body (10) is provided with an arc-shaped groove (50), and the protective baffle (41) can enter the interior of the valve body (10) through the arc-shaped groove (50). The outer circumferential surface of the protective baffle (41) is provided with a sealing baffle (44), and the sealing baffle (44) is in an arc shape.

7. A discharge valve according to claim 6, characterized in that: A pressure sensor (51) is provided inside the inner annular surface of the valve body (10), and the pressure sensor (51) is used to feedback a signal so that the protective baffle (41) protects the valve flap (31). A telescopic rod (45) is provided on the outer wall of the protective box (40), and the telescopic rod (45) is connected to the side wall of the sealing baffle (44).

8. A discharge valve according to claim 7, characterized in that: The sealing baffle (44) is provided with a drainage hole (48) to allow the material in the chamber to flow into the interior of the protection box (40); the interior bottom surface of the protection box (40) is a conical inclined surface.

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