A manually adjustable ball-type sealing surface butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, specifically a manually adjustable ball-type sealing surface butterfly valve, comprising: a valve seat, a hand wheel is arranged on the upper end of the valve seat; an operating mechanism, the operating mechanism is arranged inside the valve seat, and the upper end of the operating mechanism passes through the inner side of the hand wheel; wherein, the operating mechanism comprises a limit seat fixedly connected to the upper end of the valve seat, the inner wall of the limit seat is rotatably connected with a valve flap adjustment component, the interior of the valve flap adjustment component is provided with an operation adjustment component, and the upper end of the operation adjustment component passes through the inner side of the hand wheel; under the action of the valve flap adjustment component, the normal opening and closing of the inside of the valve seat is guaranteed, and the device improves the sealing effect by arranging an arc-shaped rubber bag during use, and at the same time, in the process of performing the step, the arc-shaped rubber bag is actively contracted, so that the wear of the valve flap and the valve seat is reduced during the adjustment process, and the normal opening and closing of the valve body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a manually adjustable ball-type sealing surface butterfly valve. Background Art

[0002] The butterfly valve, also called the flap valve, is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. The butterfly valve refers to a valve whose closing member (valve disc or butterfly plate) is a disc that rotates around the valve shaft to achieve opening and closing.

[0003] After searching the prior art "A ball-type sealing surface butterfly valve", the publication number is "CN215059553U". This device solves the problem of manual valve adjustment during frequent maintenance. However, after long-term use, the valve disc and valve seat of the butterfly valve may be worn, affecting the normal opening and closing of the valve body, and this type of maintenance increases.

[0004] Therefore, a manually adjustable ball-type sealing surface butterfly valve is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a manually adjustable ball-type sealing surface butterfly valve in order to solve the above problems, thereby improving the problem that the valve disc and the valve seat will wear out due to long-term use, affecting the normal opening and closing of the valve body.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a manually adjustable ball-type sealing surface butterfly valve, comprising: a valve seat, a handwheel is arranged on the upper end of the valve seat; an operating mechanism, the operating mechanism is arranged inside the valve seat, and the upper end of the operating mechanism passes through the inner side of the handwheel; wherein, the operating mechanism comprises a limit seat fixedly connected to the upper end of the valve seat, a valve flap adjustment component is rotatably connected to the inner wall of the limit seat, an operation adjustment component is arranged inside the valve flap adjustment component, the upper end of the operation adjustment component passes through the inner side of the handwheel, a metal spring is fixedly connected to the inner top wall of the handwheel, and the other end of the metal spring is fixedly connected to the surface of the operation adjustment component.

[0007] Preferably, the valve flap adjustment assembly includes a sealing seat rotatably connected to the interior of the valve seat, the upper end of the sealing seat is fixedly connected to a valve stem, the surface of the valve stem is fixedly connected to a water-proof flap, an internal sliding cavity is provided inside the valve stem, an arc-shaped rubber bag is fixedly connected to the edge of the water-proof flap, an air passage is provided inside the water-proof flap, the air passage is connected to the internal sliding cavity and the interior of the arc-shaped rubber bag, the air passage guides the gas inside the internal sliding cavity to the interior of the arc-shaped rubber bag, and at this time, the arc-shaped rubber bag expands when it moves into place to enhance the sealing effect inside the valve seat, wherein the internal medium of the air passage may be other fluids, which may be appropriately adjusted according to the actual use environment.

[0008] Preferably, the operating adjustment component includes an arc plate and an L-shaped hinged rod, the arc plate is hinged to the upper end of the handwheel, the L-shaped hinged rod is hinged to the inner side of the handwheel, the upper end of the L-shaped hinged rod is fixedly connected with a fixed stop block, the lower end of the L-shaped hinged rod is clamped with the surface of the limit seat, the upper flat surface of the L-shaped hinged rod is fixedly connected with the lower end of the metal spring sheet, and an arc-shaped slide is provided inside the arc plate, which is adaptively changed through manual operation of the operator to achieve smoother movement when adjusting and enhance the internal sealing effect of the valve seat under normal conditions.

[0009] Preferably, the operating adjustment component also includes a second piston slidably connected to the inner wall of the internal sliding cavity, the upper end of the second piston is fixedly connected to a control rod, the upper end of the control rod passes through the upper end of the valve stem and is fixedly connected to a groove block, the groove block is slidably connected to the inner wall of the arc slide, when the arc plate moves, the arc slide cooperates with the groove block to drive the control rod to move up and down.

[0010] Preferably, the inner wall of the sealing seat is threadedly connected with a push screw, the upper end of the push screw penetrates into the interior of the internal sliding cavity, and the push screw is turned by manually operating a screwdriver.

[0011] Preferably, the inner wall of the internal sliding cavity is slidably connected with a first piston, and the lower end of the first piston contacts the upper end of the push screw, so that the thread of the inner wall of the sealing seat cooperates with the push screw, so that the upper end of the push screw pushes the first piston to move upward.

[0012] Preferably, the upper end of the first piston is located below the air passage, and an elastic rubber sleeve is provided on the surface of the first piston to prevent the first piston and the second piston from blocking the air passage.

[0013] Preferably, the upper end of the fixed block passes through the handwheel and is slidably connected to the other end of the arc plate, a slide groove is provided on the upper inclined surface of the fixed block, the longitudinal section of the slide groove is trapezoidal, and the other end of the arc plate matches the inner wall of the slide groove.

[0014] The beneficial effects of the utility model are:

[0015] 1. Under the action of the valve disc adjustment component, the normal opening and closing of the valve seat is guaranteed. The device improves the sealing effect by setting an arc-shaped rubber bag during use. At the same time, during the step process, the arc-shaped rubber bag actively shrinks, which reduces the wear of the valve disc and valve seat during the adjustment process and ensures the normal opening and closing of the valve body.

[0016] 2. By operating the adjustment component, the internal air pressure of the valve disc adjustment component can be adjusted. During the adjustment process, the operator can manually hold the handwheel and the L-shaped hinged rod to release the limit of the limit seat, so that the internal pressure of the internal sliding cavity changes, which helps to ensure the normal opening and closing of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the operating mechanism structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection between the valve stem and the water-blocking flap of the utility model;

[0020] Figure 4 It is a cross-sectional exploded schematic diagram of the valve disc adjustment assembly of the utility model;

[0021] Figure 5 This is a schematic diagram of the connection between the control rod and the second piston of the utility model;

[0022] Figure 6 It is a schematic diagram of the partial structure of the operation and adjustment component of the utility model.

[0023] In the figure: 1. valve seat; 2. hand wheel; 3. operating mechanism; 31. limit seat; 32. valve disc adjustment assembly; 321. valve stem; 322. sealing seat; 323. water-proof flap; 324. internal sliding cavity; 325. first piston; 326. abutting screw; 327. air duct; 328. arc-shaped rubber bag; 33. operating adjustment assembly; 331. control rod; 332. second piston; 333. arc-shaped plate; 334. arc-shaped slideway; 335. fixed abutment block; 336. L-shaped hinged rod; 34. metal spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] When implementing: Figure 1-6As shown, a manually adjustable ball-type sealing surface butterfly valve comprises: a valve seat 1, a hand wheel 2 is arranged at the upper end of the valve seat 1; an operating mechanism 3, the operating mechanism 3 is arranged inside the valve seat 1, and the upper end of the operating mechanism 3 passes through the inner side of the hand wheel 2; wherein the operating mechanism 3 comprises a limit seat 31 fixedly connected to the upper end of the valve seat 1, a valve disc adjustment component 32 is rotatably connected to the inner wall of the limit seat 31, an operating adjustment component 33 is arranged inside the valve disc adjustment component 32, the upper end of the operating adjustment component 33 passes through the inner side of the hand wheel 2, a metal spring 34 is fixedly connected to the inner top wall of the hand wheel 2, and the other end of the metal spring 34 is fixedly connected to the surface of the operating adjustment component 33;

[0026] like Figure 2 , Figure 3 and Figure 4 As shown, the valve disc adjustment assembly 32 includes a sealing seat 322 rotatably connected to the inside of the valve seat 1, the upper end of the sealing seat 322 is fixedly connected to the valve stem 321, the surface of the valve stem 321 is fixedly connected to the water-proof flap 323, the interior of the valve stem 321 is provided with an internal sliding cavity 324, the edge of the water-proof flap 323 is fixedly connected to an arc-shaped rubber bag 328, the interior of the water-proof flap 323 is provided with an air passage 327, the air passage 327 is communicated with the interior of the internal sliding cavity 324 and the arc-shaped rubber bag 328, the inner wall of the sealing seat 322 is threadedly connected with a push screw 326, the upper end of the push screw 326 penetrates into the interior of the internal sliding cavity 324, the inner wall of the internal sliding cavity 324 is slidably connected with a first piston 325, the lower end of the first piston 325 contacts with the upper end of the push screw 326, the upper end of the first piston 325 is located below the air passage 327, and the surface of the first piston 325 is sleeved with an elastic rubber sleeve. When the valve flap adjustment component 32 is opened and closed each time, the internal sliding cavity 324 opened inside the valve stem 321 cooperates with the operation adjustment component 33 to form a changing internal pressure. When the internal gas is closed, the gas inside is injected into the arc-shaped rubber bag 328 through the air passage 327 connected thereto. At this time, when the arc-shaped rubber bag 328 moves to the right position, it expands to enhance the sealing effect inside the valve seat 1.

[0027] At the same time, under the influence of different external temperatures and other conditions, it can be manually adjusted by manually operating a screwdriver to turn the knob of the abutting screw 326, so that the thread of the inner wall of the sealing seat 322 cooperates with the abutting screw 326, so that the upper end of the abutting screw 326 abuts the first piston 325 to move upward, and the first piston 325 adjusts the pressure of the gas inside the internal sliding cavity 324;

[0028] like Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the operation adjustment assembly 33 includes an arc plate 333 and an L-shaped hinge rod 336. The arc plate 333 is hinged to the upper end of the hand wheel 2. The L-shaped hinge rod 336 is hinged to the inner side of the hand wheel 2. The upper end of the L-shaped hinge rod 336 is fixedly connected with a fixed stop block 335. The lower end of the L-shaped hinge rod 336 is clamped with the surface of the limit seat 31. The upper flat surface of the L-shaped hinge rod 336 is fixedly connected with the lower end of the metal spring 34. The interior of the arc plate 333 is provided with an arc slide 334. The operating and adjusting component 33 also includes a second piston 332 slidably connected to the inner wall of the internal sliding cavity 324, and the upper end of the second piston 332 is fixedly connected to a control rod 331, and the upper end of the control rod 331 passes through the upper end of the valve stem 321 and is fixedly connected to a groove block, and the groove block is slidably connected to the inner wall of the arc slide 334, and the upper end of the fixed stop block 335 passes through the hand wheel 2 and is slidably connected to the other end of the arc plate 333, and a slide groove is provided on the upper end inclined surface of the fixed stop block 335. Under normal circumstances, the L-shaped hinged rod 336 and the limit seat 31 form a stable clamping state. When the operator performs manual operation, the operator drives the rod of the L-shaped hinged rod 336 to move in an arc shape with the hinge point as the center, thereby squeezing the metal spring 34 to produce deformation. At the same time, the fixed stop block 335 moves synchronously with the L-shaped hinged rod 336, so that the other end of the arc plate 333 moves under the guidance of the upper inclined surface of the fixed stop block 335. At the same time, the groove block at the upper end of the control rod 331 slides along the inner wall of the arc slide 334. At this time, the lower end of the control rod 331 drives the second piston 332 to slide on the inner wall of the internal sliding cavity 324, thereby reducing the air pressure inside the arc slide 334, so that the arc rubber bag 328 shrinks, which facilitates the adjustment operation of the water-proof flap 323, reduces the wear caused by long-term use, and ensures the normal opening and closing of the valve body.

[0029] When the utility model is in use, the L-shaped hinge rod 336 is normally connected with the limit seat 31. When the external environment changes and needs to be adjusted, a screwdriver can be operated to turn the knob of the push screw 326, and the thread of the inner wall of the sealing seat 322 cooperates with the upper end of the push screw 326 to push the first piston 325 upward, and the first piston 325 adjusts the pressure of the gas in the internal sliding cavity 324. The internal sliding cavity 324 opened in the valve stem 321 cooperates with the operation adjustment component 33 to manually adjust it, and the L-shaped hinge rod is manually driven The rod portion 336 performs an arc motion with the hinge point as the center, and the fixed stop block 335 follows the movement so that the other end of the arc plate 333 moves on the upper inclined surface of the fixed stop block 335, and the groove block at the upper end of the control rod 331 slides along the inner wall of the arc slide 334, and the lower end of the control rod 331 drives the second piston 332 to slide on the inner wall of the internal sliding cavity 324, and the air pressure inside the arc slide 334 is reduced, and the arc rubber bag 328 is contracted through the air duct 327, thereby reducing the wear caused by long-term use.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A manually adjustable ball-type sealing surface butterfly valve, characterized in that: include: A valve seat (1), wherein a hand wheel (2) is provided at the upper end of the valve seat (1); An operating mechanism (3), wherein the operating mechanism (3) is arranged inside the valve seat (1), and the upper end of the operating mechanism (3) penetrates the inner side of the hand wheel (2); The operating mechanism (3) comprises a limit seat (31) fixedly connected to the upper end of the valve seat (1); the inner wall of the limit seat (31) is rotatably connected to a valve flap adjustment component (32); an operating adjustment component (33) is arranged inside the valve flap adjustment component (32); the upper end of the operating adjustment component (33) passes through the inner side of the hand wheel (2); the inner top wall of the hand wheel (2) is fixedly connected to a metal spring (34); the other end of the metal spring (34) is fixedly connected to the surface of the operating adjustment component (33).

2. A manually adjustable ball-type sealing surface butterfly valve according to claim 1, characterized in that: The valve flap adjustment assembly (32) includes a sealing seat (322) rotatably connected to the inside of the valve seat (1); the upper end of the sealing seat (322) is fixedly connected to a valve stem (321); the surface of the valve stem (321) is fixedly connected to a water-blocking flap (323); an internal sliding cavity (324) is provided inside the valve stem (321); an arc-shaped rubber bag (328) is fixedly connected to the edge of the water-blocking flap (323); an air duct (327) is provided inside the water-blocking flap (323); the air duct (327) is connected to the internal sliding cavity (324) and the inside of the arc-shaped rubber bag (328).

3. A manually adjustable ball-type sealing surface butterfly valve according to claim 2, characterized in that: The operation adjustment component (33) comprises an arc-shaped plate (333) and an L-shaped hinged rod (336), wherein the arc-shaped plate (333) is hinged to the upper end of the hand wheel (2), and the L-shaped hinged rod (336) is hinged to the inner side of the hand wheel (2). The upper end of the L-shaped hinged rod (336) is fixedly connected to a fixed stop block (335), the lower end of the L-shaped hinged rod (336) is clamped to the surface of the limit seat (31), the upper flat surface of the L-shaped hinged rod (336) is fixedly connected to the lower end of the metal spring sheet (34), and an arc-shaped slideway (334) is provided inside the arc-shaped plate (333).

4. A manually adjustable ball-type sealing surface butterfly valve according to claim 3, characterized in that: The operating adjustment component (33) also includes a second piston (332) slidably connected to the inner wall of the internal sliding cavity (324), the upper end of the second piston (332) is fixedly connected to a control rod (331), the upper end of the control rod (331) passes through the upper end of the valve stem (321) and is fixedly connected to a groove block, and the groove block is slidably connected to the inner wall of the arc-shaped slideway (334).

5. A manually adjustable ball-type sealing surface butterfly valve according to claim 2, characterized in that: The inner wall of the sealing seat (322) is threadedly connected with a moving screw rod (326), and the upper end of the moving screw rod (326) penetrates into the interior of the internal sliding cavity (324).

6. A manually adjustable ball-type sealing surface butterfly valve according to claim 2, characterized in that: The inner wall of the internal sliding cavity (324) is slidably connected with a first piston (325), and the lower end of the first piston (325) is in contact with the upper end of the abutting screw (326).

7. A manually adjustable ball-type sealing surface butterfly valve according to claim 6, characterized in that: The upper end of the first piston (325) is located below the air passage (327), and the surface of the first piston (325) is covered with an elastic rubber sleeve.

8. The manually adjustable ball-type sealing surface butterfly valve according to claim 3, characterized in that: The upper end of the fixed stopper (335) passes through the hand wheel (2) and is slidably connected to the other end of the arc plate (333), and a sliding groove is provided on the upper inclined surface of the fixed stopper (335).

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