Multi-functional gate valve

Abstract

The application discloses a multifunctional gate valve, which comprises a valve body, a valve plate slidingly arranged in the valve body, a valve rod arranged on one side of the valve body, one end of the valve rod being threadedly connected with the valve plate, a valve cap being rotatably arranged on the valve rod and sleeved with the valve rod, an anti-backflow assembly being arranged in an output end of the valve body, a spherical seat being fixedly connected in an input end of the valve body, an inner sphere being rotatably arranged in the spherical seat, a horizontal groove being arranged on the surface of the inner sphere, an opening one being formed in the bottom of the valve body, an opening two being formed in the bottom of the spherical seat, a vertical groove being formed in the bottom surface of the inner sphere and being communicated with the horizontal groove, a filter screen being arranged in the vertical groove, and a plug cover being arranged on the end of the filter screen away from the top plate and being used for fixing the filter screen. The application has reasonable structure and solves the problem of simple function of single gate valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gate valves, in particular to a multifunctional gate valve. BACKGROUND

[0002] The gate valve is a gate that is opened and closed, the movement direction of the gate is perpendicular to the fluid direction, and the gate valve can only be fully opened and closed, and cannot be adjusted and throttled. The gate valve is sealed by the contact between the valve seat and the gate, and the sealing surface is usually coated with metal material to increase the wear resistance, and the gate has a rigid gate and an elastic gate. According to the different gate plates, the gate valve is divided into rigid gate valves and elastic gate valves.

[0003] At present, the gate valve has been widely used in civil fields and industrial fields such as petroleum and chemical industry. The liquid in the pipeline system contains impurities, which will eventually cause the pipeline system to fail. If a check valve, a gate valve and a filter valve are connected and combined to remove impurities, due to the increase of the connection end, sealing failure, rupture and leakage and other problems are prone to occur during the long-term use of the temperature difference, causing the pipeline equipment to fail, and bringing many inconveniences and troubles to the users, and affecting the service life of the pipeline system. A solution is proposed to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide a multifunctional gate valve to solve the problem of simple function of single gate valve.

[0005] The above technical purpose of the present application is realized by the following technical scheme:

[0006] A multifunctional gate valve, comprising a valve body and a valve plate slidingly arranged inside the valve body, characterized in that one side of the valve body is provided with a valve stem, one end of the valve stem is threadedly connected with the valve plate, a valve cap is rotatably arranged on the valve stem and sleeved with the valve stem, the valve cap and the valve body are detachably connected, a backflow prevention assembly is arranged inside the output end of the valve body, a spherical seat is fixedly connected inside the input end of the valve body, an inner ball is rotatably arranged inside the spherical seat, a horizontal groove is arranged on the surface of the inner ball, a square groove one is arranged on the top of the horizontal groove, a square rod one is slidingly arranged inside the square groove one, a square groove two is arranged on the side surface of the spherical seat, a square rod two is slidingly arranged inside the square groove two, an opening one is arranged on the bottom of the valve body, an opening two is arranged on the bottom of the spherical seat, a vertical groove is arranged on the bottom surface of the inner ball, a filter screen is arranged inside the vertical groove, a top plate is fixedly connected to one end of the filter screen, and a plug cover is arranged on one end of the filter screen.

[0007] As preferred, the backflow prevention assembly comprises a valve core seat, a spring, a valve core, a sealing ring, a sealing ring and a valve core body, the valve core body is clamped inside the valve body output end, the sealing ring is clamped on the outer circular arc surface of the valve core body, the valve core seat is fixed inside the valve core body, a limiting rod is arranged in the valve core seat, one end of the limiting rod is fixedly connected with the valve core, the spring is sleeved on the limiting rod, and the two ends of the spring are tightly attached to the valve core seat and the valve core respectively, and the sealing ring is installed on the end of the valve core away from the limiting rod.

[0008] As preferred, the top of the horizontal groove is symmetrically provided with a circular insertion hole with respect to the square groove one, the inner surface of the spherical seat is symmetrically provided with an arc-shaped groove with respect to the center of the square groove two, the radius of the arc-shaped groove is the length of the connecting line of the axis of the circular insertion hole to the axis of the square groove one, one end of the arc-shaped groove is fixedly connected with a baffle, and a plug rod is slidably arranged in the circular insertion hole, one end of the plug rod is fixedly connected with the top plate, a notch is formed in the outer arc surface of the plug rod, and the notch and the baffle are matched with each other.

[0009] As preferred, the upper edge surface of the valve cap is provided with a receiving groove, the receiving groove is filled with a sealing filler, the opening end of the receiving groove is provided with a hexagonal cap matched with the threads of the valve cap, and a copper ring for sealing is arranged between the hexagonal cap and the valve cap.

[0010] As preferred, a tubular receiving rod is arranged in the opening one and the opening two, the receiving rod is fixedly connected with the inner ball, the opening one, the opening two, the receiving rod and the vertical groove are coaxial, the plug cover and a section of the receiving rod are clamped with each other, the plug cover and the receiving rod are sealed by a sealing gasket, and one end of the receiving rod outside the opening one is fixedly connected with a receiving block.

[0011] As preferred, a hand wheel is sleeved on the valve rod, and the hand wheel is fixedly connected with the valve rod through a hexagonal nut.

[0012] As preferred, a clamping spring is arranged on one side of the valve core body away from the valve plate, and a clamping opening matched with the clamping spring is formed in the valve body output end.

[0013] As preferred, a locking cap for limiting the valve rod is arranged at the bottom of the valve cap.

[0014] As preferred, a gasket is arranged between the valve body and the valve cap.

[0015] Advantages:

[0016] The filter screen is installed in the input end of the valve body to filter the medium entering the valve body, the filter screen is designed in a barrel shape, which can achieve double filtering effect and ensure filtering effect, the arc-shaped groove on the top of the top plate and the notch on the plug rod cooperate with each other, so that the filter screen cannot be taken out in the working state.

[0017] When the filter screen is replaced, the inner ball is rotated, and the horizontal groove on the inner ball is rotated inside the spherical groove, so as to avoid the correspondence of the horizontal groove and the output end of the valve body. The side surface of the inner ball will block the input end of the spherical groove, so as to avoid the medium from entering and avoid the spilling of the medium inside the pipeline when the filter screen is replaced;

[0018] When the filter screen is replaced, the filter screen is taken out to drive the top plate to move. The top plate removes the support force of the opposite bar one, so that the bar one moves downward under the action of gravity. At the same time, the bar one removes the support force of the opposite bar two, and the bar two falls into the square groove one under the action of gravity, so as to form a clamping connection, avoid the continuous rotation of the inner ball, and control the movement stroke of the bar one by the limiting blocks on both sides of the bar one, so as to avoid the disengagement of the bar two due to the excessive movement distance, avoid the resetting phenomenon when the filter screen is not installed, and ensure the safety;

[0019] The handle is rotated to drive the lead screw to drive the gate plate, so as to realize the opening and closing of the valve. The valve body is an integrated structure. The valve core of the inlet check valve is opened under the action of fluid pressure. The fluid flows from the inlet side to the outlet side. When the pressure on the inlet side is lower than that on the outlet side, the valve core is automatically closed under the action of fluid pressure difference, its own gravity and the pushing force of the spring, so as to prevent the backflow of fluid. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a structural schematic diagram of an embodiment;

[0021] Fig. 2 It is a sectional view schematic diagram of an embodiment for showing the spherical seat and the inner ball;

[0022] Fig. 3 It is a schematic diagram of an embodiment for showing the arc-shaped groove and the blocking piece;

[0023] Fig. 4 It is a square bar schematic diagram of A;

[0024] Fig. 5 It is a sectional view of an embodiment for showing the anti-backflow assembly;

[0025] Fig. 6 It is a sectional view of an embodiment for showing the receiving groove and the filler;

[0026] Fig. 7 It is a schematic diagram of an embodiment for showing the insertion rod and the notch.

[0027] Mark No. 1, valve body; 2, valve plate; 3, valve stem; 4, valve cap; 5, anti-backflow assembly; 6, spherical seat; 7, inner ball; 8, transverse groove; 9, square groove I; 10, square rod I; 11, square groove II; 12, square rod II; 13, opening I; 14, opening II; 15, vertical groove; 16, filter screen; 17, top plate; 18, plug cover; 19, valve core seat; 20, spring; 21, valve core; 22, sealing ring; 23, sealing ring; 24, valve core body; 25, limiting rod; 26, circular insertion hole; 27, arc-shaped groove; 28, blocking piece; 29, insertion rod; 30, notch; 31, storage groove; 32, filler; 33, hexagonal cap; 34, copper ring; 35, tubular receiving rod; 36, sealing gasket; 37, receiving block; 38, hand wheel; 39, hexagonal nut; 40, clamping spring; 41, bayonet; 42, locking cap; 43, gasket. DETAILED DESCRIPTION

[0028] The following description is only a preferred embodiment of the present application, and the protection scope is not limited to this embodiment only. Any technical solution falling within the concept of the present application shall be within the protection scope of the present application. It should be noted that any improvement and modification made by those skilled in the art without departing from the principle of the present application shall also be considered as within the protection scope of the present application.

[0029] See Figs. 1-2 As shown in the figure, a multifunctional gate valve includes a valve body 1, a spherical seat 6 fixedly connected inside the input end of the valve body 1, an inner ball 7 rotatably arranged inside the spherical seat 6, a transverse groove 8 arranged on the surface of the inner ball 7, the axis of the transverse groove 8 and the flow channel axis of the valve body 1 being located in the same plane, an opening I 13 formed in the bottom of the valve body 1, an opening II 14 formed in the bottom of the spherical seat 6, a vertical groove 15 formed in the bottom surface of the inner ball 7 and communicating with the transverse groove 8, a tubular receiving rod 35 arranged through the openings I 13 and II 14, the receiving rod being fixedly connected with the inner ball 7, the openings I 13, II 14, the receiving rod and the vertical groove 15 being coaxial, a filter screen 16 arranged inside the vertical groove 15, a plug cover 18 arranged at the end of the filter screen 16 away from the top plate 17 and serving to fix the filter screen 16, the plug cover 18 and a section of the receiving rod being mutually clamped, the valve body 1 being sealed by the plug cover 18 to avoid leakage of the medium, the plug cover 18 and the receiving rod being sealed by a sealing gasket 36, the receiving block 37 being fixedly connected with the end of the receiving rod outside the opening I 13, the receiving block 37 facilitating rotation of the receiving rod by the user.

[0030] The outer pipeline and the two ends of the valve body 1 are connected with each other, the medium inside the outer pipeline enters the valve body 1 through the input end of the valve body 1, and is filtered by the filter screen 16 inside the valve body 1, the barrel-shaped filter screen 16 can serve for twice filtering, ensuring the filtering effect, meanwhile, the barrel-shaped filter screen 16 has more stable impact resistance, ensuring the service life.

[0031] As shown in Figs. 2-4 The top of the horizontal groove 8 is provided with a square groove I 9, a square rod I 10 is slidably arranged in the square groove I 9, the square groove I 9 is mutually matched with the square rod I 10, and the square groove I 9 is equal in length, the side surface of the spherical seat 6 corresponding to the square groove I 9 is provided with a square groove II 11 with the same side length as the square groove I 9, a square rod II 12 is slidably arranged in the square groove II 11, the square groove II 11 is mutually matched with the square rod II 12, and the cross section of the square groove I 9 is a square.

[0032] When the filter screen 16 is replaced, the filter screen 16 is taken out to drive the top plate 17 to move, the top plate 17 removes the supporting force of the square rod I 10, so that the square rod I 10 moves downward under the action of gravity, at the same time, the square rod I 10 removes the supporting force of the square rod II 12, the square rod II 12 falls into the square groove I 9 under the action of gravity, so as to form a clamping connection, avoid the inner ball 7 to continue to rotate, the limiting block on both sides of the square rod I 10 can control the moving stroke of the square rod I 10, avoid the square rod II 12 from being separated due to the too large moving distance, avoid the reset phenomenon from occurring when the filter screen 16 is not installed, and ensure the safety.

[0033] As shown in Fig. 1 , Fig. 3 and Fig. 7 One end of the filter screen 16 located in the inner ball 7 is fixedly connected with the top plate 17, the top plate 17 and the square rod I 10 are in contact with each other, the top of the horizontal groove 8 is symmetrically provided with a circular insertion hole 26 about the square groove I 9, the inner surface of the spherical seat 6 is symmetrically provided with an arc-shaped groove 27 about the center of the square groove II 11, the radius of the arc-shaped groove 27 is the length of the connecting line of the axis of the circular insertion hole 26 to the axis of the square groove I 9, one end of the arc-shaped groove 27 is fixedly connected with a baffle 28, a plug rod 29 is slidably arranged in the circular insertion hole 26, one end of the plug rod 29 is fixedly connected with the top plate 17, a recess 30 is formed on the outer arc surface of the plug rod 29, and the recess 30 and the baffle 28 are mutually matched.

[0034] The plug rod 29 is inserted through the segment of the arc-shaped groove 27 without the baffle 28, when the inner ball 7 rotates, the inner ball 7 drives the plug rod 29 to rotate, so that the baffle 28 enters the recess 30 on the plug rod 29, the plug rod 29 and the baffle 28 limit the top plate 17, so as to avoid the filter screen 16 from falling from the vertical groove 15 in the working state, at the same time, the arc-shaped groove 27 plays a limiting role on the inner ball 7, so that the rotation angle of the inner ball 7 is always less than or equal to 90 degrees, thereby ensuring the relative of the horizontal groove 8 and the input end of the valve body 1

[0035] As shown in Fig. 6As shown, the valve body 1 is provided with a valve plate 2, one side of the valve body 1 is provided with a valve stem 3, one end of the valve stem 3 is threadedly connected with the valve plate 2, a hand wheel 38 is sleeved on the valve stem 3, the hand wheel 38 is fixedly connected with the valve stem 3 through a hexagonal nut 39, the hand wheel 38 is convenient for a user to drive the valve stem 3, a valve cover 4 is rotatably sleeved on the valve stem 3, a gasket 43 is arranged between the valve body 1 and the valve cover 4, the valve cover 4 and the valve body 1 are detachably connected, a locking cap 42 for limiting the valve stem 3 is arranged at the bottom of the valve cover 4, the locking cap 42 avoids that the valve stem 3 moves relatively with the valve cover 4 in the axial direction during use, so that the valve stem 3 rotates more stably, a receiving groove 31 is formed in the upper edge of the valve cover 4, the receiving groove 31 is filled with a packing 32 for sealing, the packing 32 seals between the valve cover 4 and the valve stem 3, so as to avoid leakage of the medium, an opening end of the receiving groove 31 is provided with a hexagonal cap 33 threadedly connected with the valve cover 4, a copper ring 34 for sealing is arranged between the hexagonal cap 33 and the valve cover 4, the copper ring 34 and the hexagonal cap 33 compact and fix the packing 32, so as to avoid spilling of the packing 32.

[0036] See Fig. 5 As shown, the output end of the valve body 1 is provided with an anti-backflow assembly 5, the anti-backflow assembly 5 comprises a valve core seat 19, a spring 20, a valve core 21, a sealing ring 22, a sealing ring 23 and a valve core body 24, a clamping spring 40 is arranged on one side of the valve core body 24 away from the valve plate 2, a clamping opening 41 for cooperating with the clamping spring 40 is formed in the output end of the valve body 1, the sealing ring 22 is clamped on the outer circular arc surface of the valve core body 24, the valve core seat 19 is fixed in the valve core body 24, a limiting rod 25 is arranged in the valve core seat 19, one end of the limiting rod 25 is fixedly connected with the valve core 21, the spring 20 is sleeved on the limiting rod 25, the two ends of the spring 20 are tightly attached to the valve core seat 19 and the valve core 21 respectively, and the sealing ring 23 is arranged on one end of the valve core 21 away from the limiting rod 25.

[0037] The handle is rotated to drive the lead screw, the lead screw drives the gate plate, and the opening and closing of the valve are realized, the valve body 1 is an integrated structure, the valve core 21 of the inlet check valve is opened under the action of fluid pressure, fluid flows from the inlet side to the outlet side, when the pressure of the inlet side is lower than that of the outlet side, the valve core 21 is automatically closed under the action of fluid pressure difference, its own gravity and the pushing force of the spring 20, so as to prevent fluid backflow.

Claims

1. A multi-functional gate valve comprising a valve body (1) and a valve plate (2) slidingly arranged inside the valve body (1), characterized in that, One side of the valve body (1) is provided with a valve stem (3), one end of the valve stem (3) is screwed with the valve plate (2), the valve stem (3) is rotatably sleeved with a valve cap (4), the valve cap (4) is detachably connected with the valve body (1), the inside of the output end of the valve body (1) is provided with an anti-backflow assembly (5), the inside of the input end of the valve body (1) is fixedly connected with a spherical seat (6), the inside of the spherical seat (6) is rotatably provided with an inner ball (7), the surface of the inner ball (7) is provided with a transverse groove (8), the top of the transverse groove (8) is provided with a square groove (9), the inside of the square groove (9) is slidably provided with a square rod (10), the side of the spherical seat (6) is provided with a square groove (11), the inside of the square groove (11) is slidably provided with a square rod (12), the bottom of the valve body (1) is provided with an opening (13), the bottom of the spherical seat (6) is provided with an opening (14), the bottom surface of the inner ball (7) is provided with a vertical groove (15), the inside of the vertical groove (15) is provided with a filter screen (16), one end of the filter screen (16) is fixedly connected with a top plate (17), one end of the filter screen (16) is provided with a plug cover (18). The top of the transverse groove (8) is symmetrically provided with a circular jack (26) with respect to the square groove (9), the inner surface of the spherical seat (6) is symmetrically provided with an arc-shaped groove (27) with respect to the center of the square groove (11), the radius of the arc-shaped groove (27) is the length of the axis of the circular jack (26) to the axis of the square groove (9), one end of the opening of the arc-shaped groove (27) is fixedly connected with a baffle (28), the inside of the circular jack (26) is slidably provided with a plug rod (29), one end of the plug rod (29) is fixedly connected with the top plate (17), the outer arc surface of the plug rod (29) is provided with a notch (30), the notch (30) and the baffle (28) are mutually matched.

2. A multi-functional gate valve according to claim 1, wherein The anti-backflow assembly (5) comprises a valve core seat (19), a spring (20), a valve core (21), a sealing ring (22), a sealing ring (23) and a valve core body (24), the valve core body (24) is clamped in the inside of the output end of the valve body (1), the sealing ring (22) is clamped on the outer circular arc surface of the valve core body (24), the valve core seat (19) is fixed in the inside of the valve core body (24), the limit rod (25) is provided in the valve core seat (19), one end of the limit rod (25) is fixedly connected with the valve core (21), the spring (20) is sleeved on the limit rod (25), the two ends of the spring (20) are respectively closely attached with the valve core seat (19) and the valve core (21), the sealing ring (23) is installed on the end of the valve core (21) away from the limit rod (25).

3. The multi-functional gate valve according to claim 1, wherein The upper edge surface of the valve cap (4) is provided with a receiving groove (31), the receiving groove (31) is filled with a filler (32) for sealing, the opening end of the receiving groove (31) is provided with a hexagonal cap (33) which is screwed with the valve cap (4), the copper ring (34) for sealing is arranged between the hexagonal cap (33) and the valve cap (4).

4. The multi-functional gate valve according to claim 1, wherein The opening one (13) and opening two (14) are internally provided with a tubular receiving rod (35), the receiving rod is fixedly connected with the inner ball (7), the opening one (13), opening two (14), receiving rod and vertical groove (15) are coaxial, the plug (18) and a section of the receiving rod are mutually clamped, the plug (18) and the receiving rod are sealed by a sealing gasket (36), and one end of the receiving rod located outside the opening one (13) is fixedly connected with a receiving block (37).

5. The multi-functional gate valve according to claim 1, wherein A hand wheel (38) is sleeved on the valve rod (3), and the hand wheel (38) is fixedly connected with the valve rod (3) through a hexagon nut (39).

6. A multi-functional gate valve according to claim 2, wherein A clamping spring (40) is arranged on the side, away from the valve plate (2), of the valve core body (24), and a clamping opening (41) for cooperating with the clamping spring (40) is arranged on the output end of the valve body (1).

7. The multi-functional gate valve according to claim 1, wherein A locking cap (42) for limiting the valve rod (3) is arranged at the bottom of the valve cap (4).

8. The multi-functional gate valve according to claim 1, wherein A gasket (43) is arranged between the valve body (1) and the valve cap (4).

Images