Quick-open type five-eccentric forging hard sealing butterfly valve

Abstract

The utility model relates to the technical field of valves, in particular to a quick-open type five-eccentric forging hard sealing butterfly valve which comprises a valve body, a valve rod, a valve seat, a butterfly plate, an executing mechanism and a valve cover connected with the valve body, and further comprises a sleeve and a connecting block, one end, penetrating through the valve rod, of the sleeve is connected with the connecting block, the other end of the sleeve is connected with the butterfly plate, and a groove is formed in the butterfly plate. The butterfly plate is provided with a groove, a clamping assembly is connected into the groove in a sliding mode, a clamping groove connected with the clamping assembly in a clamping mode is formed in the outer wall of the sleeve, the butterfly plate is connected with the sleeve when the clamping assembly is connected with the clamping groove in a clamping mode, and the butterfly plate can be separated from the sleeve when the clamping assembly is separated from the clamping groove. The clamping assembly on the butterfly plate is clamped with the sleeve penetrating through the valve rod, the butterfly plate is connected to the valve rod through the sleeve, when the butterfly plate needs to be maintained and replaced, only the clamping assembly needs to be separated from the sleeve, the butterfly plate can be independently disassembled, and the butterfly valve has the advantage that the butterfly plate is conveniently and rapidly disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a quick-opening five-eccentric forged hard-sealed butterfly valve. Background Art

[0002] The butterfly valve, also known as 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 axis to achieve opening and closing. With the development of the times, the butterfly valve has also been improved in technology. The butterfly valve has developed from the center line butterfly valve, single eccentric butterfly valve, double eccentric butterfly valve to the triple eccentric butterfly valve, and later to the five eccentric butterfly valve.

[0003] Patent CN103759027A discloses a five-eccentric butterfly valve, in which there is an eccentricity between the symmetrical center plane of the valve sealing surface and the axial center plane of the rotating shaft, there is an eccentricity between the center plane of the flow channel and the radial center plane of the rotating shaft, the sealing surface and the axial center plane of the rotating shaft form an angular offset, there is an eccentricity between the axis of the elliptical cone and the radial center plane of the rotating shaft, and there is an eccentricity between the sealing surface at the lower end of the elliptical cone and the axial center plane of the rotating shaft. This solution has better solved the problem of unreliable sealing of the butterfly valve, but the opening and closing speed of the five-eccentric butterfly valve is still slow, and an electric or pneumatic actuator is required to make the butterfly valve have a fast opening performance.

[0004] Because of the five-eccentric structure of the five-eccentric butterfly valve, as the working time accumulates, the wear of the sealing surface will cause the eccentric angle or eccentric distance to deviate, and the butterfly plate needs to be disassembled for maintenance or position adjustment. However, the quick-opening five-eccentric butterfly valve in the prior art is not convenient for disassembling the butterfly plate, so it is necessary to propose a quick-opening five-eccentric butterfly valve that can easily disassemble the butterfly plate. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a quick-opening five-eccentric forged hard-sealed butterfly valve. The utility model has a butterfly plate quick-disassembly structure, that is, the clamping assembly on the butterfly plate is clamped with a sleeve that penetrates the valve stem, and the butterfly plate is connected to the valve stem through the sleeve. When the butterfly plate needs to be repaired or replaced, it is only necessary to separate the clamping assembly from the sleeve to remove the butterfly plate separately, which has the advantage of convenient and quick disassembly and assembly of the butterfly plate.

[0006] The technical scheme adopted by the utility model is as follows: a quick-opening five-eccentric forged hard-sealed butterfly valve, comprising a valve body, a valve stem, a valve seat, a butterfly plate, an actuator and a valve cover connected to the valve body, wherein a medium channel is arranged in the valve body, and the butterfly plate and the valve seat are sealed and matched in the medium channel, one end of the valve stem is connected to the butterfly plate, and the other end passes through the valve body and the valve cover in turn to be connected to the actuator, and also comprises a sleeve and a connecting block, the sleeve passes through one end of the valve stem to be connected to the connecting block and the other end to the butterfly plate, the butterfly plate is provided with a groove, a snap-on assembly is slidably connected in the groove, and a snap-on groove is provided on the outer wall of the sleeve to be snap-on with the snap-on assembly, when the snap-on assembly is snap-on with the slot, the butterfly plate is connected to the sleeve, and when the snap-on assembly is disengaged from the slot, the butterfly plate can be separated from the sleeve.

[0007] The outer wall of the sleeve is provided with external threads, and the sleeve is threadedly connected to the connecting block via the external threads.

[0008] The sleeve is provided with a through hole along the axial direction. When the butterfly plate is connected to the sleeve, the through hole is connected to the groove. A push rod is slidably connected in the through hole. The push rod has a first state of extending into the groove to push the clamping assembly out of the clamping slot and a second state of retracting into the through hole away from the clamping assembly.

[0009] One end of the through hole close to the butterfly plate is recessed with a countersunk hole with an inner diameter larger than the through hole, and one end of the push rod close to the butterfly plate is provided with a top block, which is slidably connected to the countersunk hole. When the push rod is in the first state, the top block extends into the groove to push the clamping assembly out of the slot.

[0010] The clamping assembly includes a slider and a spring. The inner wall of the groove is recessed with a mounting groove. One end of the spring abuts against the inner wall of the mounting groove and the other end abuts against the slider. The slider is connected with a clamping block adapted to the clamping groove.

[0011] An end of the sliding block away from the spring is provided with an inclined surface, and an end of the top block close to the groove is provided with an inverted inclined surface with the same inclination as the inclined surface.

[0012] The outer walls on both sides of the sleeve are provided with card grooves, and the inner walls of the grooves are recessed with installation grooves on both sides. The card-connecting components are divided into two groups and distributed on both sides of the sleeve. When the butterfly plate is separated from the sleeve, the sliders of the two groups of card-connecting components are abutted against one end away from the spring and the ends of the two sliders close to the spring are both located in the installation grooves.

[0013] The beneficial effects of the utility model are as follows: the utility model has a butterfly plate quick-release structure, that is, the clamping assembly on the butterfly plate is clamped with the sleeve that penetrates the valve stem, the butterfly plate is connected to the valve stem through the sleeve, and the other end of the sleeve is also connected to a connecting block, which increases the stability of the connection structure. When the butterfly plate needs to be repaired and replaced, it is only necessary to release the clamping connection between the clamping assembly and the sleeve to remove the butterfly plate separately. It has the advantages of convenient and quick disassembly and assembly of the butterfly plate, and the butterfly plate can be maintained on the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0015] Figure 1 This is a structural schematic diagram of the utility model quick-opening five-eccentric forged hard-sealed butterfly valve;

[0016] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0017] Figure 3 It is a partial enlarged structural schematic diagram when the clamping assembly is separated from the sleeve;

[0018] Figure 4 It is a partial enlarged structural diagram when the butterfly plate is separated from the sleeve;

[0019] Figure 5 This is a schematic diagram of the five-eccentric structure of the utility model;

[0020] In the figure, 1-valve body, 2-valve stem, 3-valve seat, 4-butterfly plate, 5-actuator, 6-valve cover, 7-medium channel, 8-sleeve, 9-connecting block, 10-groove, 11-card slot, 12-external thread, 13-through hole, 14-push rod, 15-countersunk hole, 16-top block, 17-slider, 18-spring, 19-mounting groove, 20-card block, 21-inclined surface, 22-inverted inclined surface, 23-card assembly. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0022] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0023] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0024] like Figures 1 to 5 As shown, it is an embodiment of the utility model, a quick-opening five-eccentric forged hard-sealed butterfly valve, comprising a valve body 1, a valve stem 2, a valve seat 3, a butterfly plate 4, an actuator 5 and a valve cover 6 connected to the valve body 1, wherein a medium channel 7 is arranged in the valve body 1, and the butterfly plate 4 is arranged in the medium channel 7 in a sealing manner with the valve seat 3, one end of the valve stem 2 is connected to the butterfly plate 4 and the other end passes through the valve body 1 and the valve cover 6 in sequence to be connected to the actuator 5, and further comprises a sleeve 8 and a connecting block 9, wherein the sleeve 8 passes through one end of the valve stem 2 and is connected to the connecting block 9 and the other end is connected to the butterfly plate 4, the butterfly plate 4 is provided with a groove 10, a clamping assembly 23 is slidably connected in the groove 10, and a clamping groove 11 is provided on the outer wall of the sleeve 8 to be clamped with the clamping assembly 23, when the clamping assembly 23 is clamped with the clamping groove 11, the butterfly plate 4 is connected to the sleeve 8, and when the clamping assembly 23 is disengaged from the clamping groove 11, the butterfly plate 4 can be separated from the sleeve 8.

[0025] The beneficial effects of such an arrangement are as follows: the utility model has a butterfly plate quick-release structure, that is, the clamping assembly on the butterfly plate is clamped with the sleeve that penetrates the valve stem, the butterfly plate is connected to the valve stem through the sleeve, and the other end of the sleeve is also connected to a connecting block, which increases the stability of the connecting structure. When the butterfly plate needs to be repaired or replaced, it is only necessary to release the clamping connection between the clamping assembly and the sleeve to remove the butterfly plate separately. It has the advantages of convenient and quick disassembly and assembly of the butterfly plate, and the butterfly plate can be maintained on the machine. The connection structure between the clamping assembly and the sleeve is stable, which ensures that the butterfly plate and the valve stem are firmly connected.

[0026] It is further provided that an outer wall of the sleeve 8 is provided with an external thread 12 , and the sleeve 8 is threadedly connected to the connecting block 9 via the external thread 12 .

[0027] The beneficial effects of such a configuration are as follows: the threaded connection between the sleeve and the connecting block ensures that the connecting block is firmly installed. In this embodiment, the external thread of the sleeve also forms a threaded connection with the valve stem, further improving the connection strength of the sleeve. When the butterfly plate is removed, the connecting block and the sleeve will not easily fall off the valve stem, reducing the possibility of parts loss.

[0028] It is further configured that the sleeve 8 is provided with a through hole 13 along the axial direction. When the butterfly plate 4 is connected to the sleeve 8, the through hole 13 is connected to the groove 10. A push rod 14 is slidably connected in the through hole 13. The push rod 14 has a first state in which it extends into the groove 10 to push the clamping assembly 23 out of the clamping groove 11 and a second state in which it retracts into the through hole 13 and away from the clamping assembly 23.

[0029] The beneficial effects of such a setting are as follows: the sliding push rod helps the card assembly to disengage from the card slot. When the card assembly needs to be released from the card slot, it is only necessary to push the push rod, which drives the card assembly to move and helps the card assembly switch the connection state.

[0030] It is further configured that the end of the through hole 13 close to the butterfly plate 4 is recessed with a countersunk hole 15 whose inner diameter is larger than the through hole 13, and the end of the push rod 14 close to the butterfly plate 4 is provided with a top block 16, and the top block 16 is slidably connected in the countersunk hole 15. When the push rod 14 is in the first state, the top block 16 extends into the groove 10 to push the clamping assembly 23 out of the clamping slot 11.

[0031] The beneficial effects of such a configuration are as follows: the push rod is extended with a top block with a larger inner diameter, which can more easily drive the clamping assembly to move, and the top block cooperates with the countersunk hole to limit the sliding range of the push rod, thereby preventing the push rod from detaching from the sleeve.

[0032] It is further configured that the clamping assembly 23 includes a slider 17 and a spring 18, the inner wall of the groove 10 is recessed with a mounting groove 19, one end of the spring 18 abuts against the inner wall of the mounting groove 19 and the other end abuts against the slider 17, and the slider 17 is connected to a clamping block 20 adapted to the clamping groove 11.

[0033] The beneficial effect of such a configuration is as follows: the spring helps the slider to return to the engaging state, that is, the engaging block on the slider extends into the engaging groove to form an engaging fit.

[0034] It is further provided that an end of the slider 17 away from the spring 18 is provided with an inclined surface 21 , and an end of the top block 16 close to the groove 10 is provided with an inverted inclined surface 22 having the same inclination as the inclined surface 21 .

[0035] The beneficial effects of such a configuration are as follows: in this embodiment, the area of ​​the inverted slope is smaller than the inclined surface, and the cooperation between the inclined surface and the inverted slope can help the top block drive the slider to move, which is more labor-saving.

[0036] It is further configured that the outer walls on both sides of the sleeve 8 are provided with a card groove 11, and the inner walls of the groove 10 are recessed with mounting grooves 19 on both sides. The card-connecting components 23 are divided into two groups and are distributed on both sides of the sleeve 8. When the butterfly plate 4 is separated from the sleeve 8, the sliders 17 of the two groups of card-connecting components 23 abut against one end away from the spring 18 and the ends of the two sliders 17 close to the spring 18 are both located in the mounting groove 19.

[0037] The beneficial effects of such an arrangement are as follows: in the present embodiment, the two groups of clamping assemblies are symmetrically arranged on both sides of the sleeve, the two groups of clamping assemblies and the sleeve form a clamping fit, the force is evenly distributed, the clamping is more stable, and the movable top block can simultaneously drive the two sliders to move, that is, the two sliders respectively move away from the two sides of the sleeve, and when the butterfly plate is removed, the two sliders resist each other, and the slider and the spring will not easily fall out of the groove and the mounting groove.

[0038] It is further provided that the valve body, valve seat and butterfly plate are all made of metal forging, and the sealing surface between the valve seat and the butterfly plate is hard sealed.

[0039] The beneficial effects of such a configuration are as follows: better sealing and longer service life.

[0040] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A quick-opening five-eccentric forged hard-sealed butterfly valve, comprising a valve body (1), a valve stem (2), a valve seat (3), a butterfly plate (4), an actuator (5), and a valve cover (6) connected to the valve body (1), wherein a medium passage (7) is provided in the valve body (1), the butterfly plate (4) and the valve seat (3) are arranged in the medium passage (7) in a sealing manner, one end of the valve stem (2) is connected to the butterfly plate (4), and the other end passes through the valve body (1) and the valve cover (6) in sequence to be connected to the actuator (5), characterized in that: It also includes a sleeve (8) and a connecting block (9), wherein the sleeve (8) passes through the valve stem (2), one end of which is connected to the connecting block (9) and the other end of which is connected to the butterfly plate (4), the butterfly plate (4) is provided with a groove (10), a clamping assembly (23) is slidably connected in the groove (10), and an outer wall of the sleeve (8) is provided with a clamping groove (11) which is clamped with the clamping assembly (23), when the clamping assembly (23) is clamped with the clamping groove (11), the butterfly plate (4) is connected to the sleeve (8), and when the clamping assembly (23) is separated from the clamping groove (11), the butterfly plate (4) can be separated from the sleeve (8).

2. The quick-opening five-eccentric forged hard-sealed butterfly valve according to claim 1 is characterized in that: The outer wall of the sleeve (8) is provided with an external thread (12), and the sleeve (8) is threadedly connected to the connecting block (9) via the external thread (12).

3. The quick-opening five-eccentric forged hard-sealed butterfly valve according to claim 1 is characterized in that: The sleeve (8) is provided with a through hole (13) along the axial direction. When the butterfly plate (4) is connected to the sleeve (8), the through hole (13) is communicated with the groove (10). A push rod (14) is slidably connected in the through hole (13). The push rod (14) has a first state in which it extends into the groove (10) to push the clamping assembly (23) out of the clamping groove (11) and a second state in which it retracts into the through hole (13) and is away from the clamping assembly (23).

4. The quick-opening five-eccentric forged hard-sealed butterfly valve according to claim 3 is characterized in that: A countersunk hole (15) having an inner diameter greater than that of the through hole (13) is recessed at one end of the through hole (13) close to the butterfly plate (4); a top block (16) is provided at one end of the push rod (14) close to the butterfly plate (4); the top block (16) is slidably connected to the countersunk hole (15); when the push rod (14) is in a first state, the top block (16) extends into the groove (10) to push the clamping assembly (23) out of the clamping slot (11).

5. The quick-opening five-eccentric forged hard-sealed butterfly valve according to claim 4 is characterized in that: The clamping assembly (23) comprises a slider (17) and a spring (18); a mounting groove (19) is recessed in the inner wall of the groove (10); one end of the spring (18) abuts against the inner wall of the mounting groove (19) and the other end abuts against the slider (17); the slider (17) is connected to a clamping block (20) adapted to the clamping groove (11).

6. The quick-opening five-eccentric forged hard-sealed butterfly valve according to claim 5 is characterized in that: An end of the slider (17) away from the spring (18) is provided with an inclined surface (21), and an end of the top block (16) close to the groove (10) is provided with an inverted inclined surface (22) having the same inclination as the inclined surface (21).

7. The quick-opening five-eccentric forged hard-sealed butterfly valve according to claim 6 is characterized in that: The outer walls of both sides of the sleeve (8) are provided with a clamping groove (11), the inner walls of the groove (10) are both recessed with a mounting groove (19), the clamping components (23) are in two groups and are distributed on both sides of the sleeve (8), when the butterfly plate (4) is separated from the sleeve (8), the ends of the sliders (17) of the two groups of the clamping components (23) away from the spring (18) abut against each other and the ends of the two sliders (17) close to the spring (18) are both located in the mounting groove (19).

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