Handle type butterfly valve structure

Abstract

The utility model relates to the field of handle type butterfly valves, and discloses a handle type butterfly valve structure which comprises a valve pipe, the top of the outer wall of the valve pipe is communicated with a cylinder, the top of the cylinder is fixedly connected with a supporting disc, the inner wall of the cylinder is rotationally connected with a rotating column, and the bottom of the rotating column is fixedly connected with an arc-shaped valve. A square block is fixedly connected to the top of the rotating column, limiting frames are fixedly connected to the front side and the rear side of the outer wall of the valve pipe correspondingly, sealing rings are arranged on the outer walls of the limiting frames, and a plurality of threaded rods are arranged on the inner walls of the two sealing rings correspondingly. According to the utility model, the fixing nut is detached, the flange and the threaded rod of the butterfly valve are butted and fixed, the sealing ring is arranged between the flange and the butterfly valve, the sealing ring is extruded by the fixing nut to fill a gap, the limiting frame ensures that the pipeline flange is centered and leakage is prevented, and the sliding space in the limiting frame provides buffering during high-temperature expansion; the arc-shaped valve can be opened only by rotating the square block, and the liquid leakage risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to handle formula butterfly valve field especially handle formula butterfly valve structure. BACKGROUND

[0002] In the field of industrial fluid control, butterfly valve as an important cut-off and regulating device is widely used, handle formula butterfly valve is the common type in butterfly valve family, mainly by valve body, butterfly plate, sealing structure and operating handle part constitute, the valve body usually adopts metal material, plays the role of bearing fluid medium and provides the installation foundation, the butterfly plate is located in the valve body, is the key part of controlling fluid on-off and flow regulating, it realizes the opening and closing action of the valve through rotating around the central axis, the sealing structure is closely attached between the butterfly plate and the valve body, guarantees the sealing property when the valve is closed, prevents medium leakage, and the operating handle is directly connected with the rotating shaft of the butterfly plate, the operator rotates the handle manually, transmits the external force to the butterfly plate, thereby conveniently controls the valve state, to meet the control demand of fluid delivery under different working conditions.

[0003] The existing handle formula butterfly valve plays an important role in many industrial scenes, realizes the basic fluid cut-off function through the relatively simple mechanical structure, provides a certain guarantee for the stable operation of the production process, however, in terms of sealing property, there are obvious deficiencies, since the sealing structure of the existing handle formula butterfly valve adopts the sealing ring of traditional rubber material, in the long-term operation process, the rubber material is easy to be affected by medium temperature, pressure and chemical corrosion and gradually aged and hardened, when the butterfly valve is closed, the aged rubber sealing ring cannot closely attach the sealing surface of the butterfly plate and the valve body, so that the sealing performance is reduced, at the same time, under high temperature working condition, the thermal expansion coefficient of rubber is large, easy to appear excessive expansion deformation, leads to the increase of sealing gap, further weakens the sealing effect, in addition, the sealing structure of the existing butterfly valve requires high installation precision, once there is a small coaxiality deviation between the valve body and the butterfly plate in the installation process, the sealing ring will be unevenly stressed, local wear is aggravated, finally causes the medium leakage problem, brings many hidden troubles to safe production and efficient operation. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides handle formula butterfly valve structure, aims at improving the problem that the valve body and the butterfly plate have small coaxiality deviation in the installation process in the prior art, which will make the sealing ring unevenly stressed and local wear aggravated.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: Handle type butterfly valve structure, including the valve pipe, the outer wall top of valve pipe is connected with the cylinder, the top fixedly connected with the support disc of cylinder, the inner wall rotationally connected with the rotating column of cylinder, the bottom fixedly connected with the arc valve of rotating column, the top fixedly connected with the square block of rotating column, the outer wall front and back of valve pipe is fixedly connected with the limiting frame, the outer wall of limiting frame is provided with the sealing ring, the inner wall of two sealing rings is provided with a plurality of threaded rods, the outer wall front and back of threaded rod is screw connected with the fixed nut, the outer wall of square block is provided with labor-saving mechanism, and the labor-saving mechanism is used to replace the handle above according to the use scene.

[0006] As a further description of the above technical scheme:

[0007] The labor-saving mechanism includes a U-shaped block, the U-shaped block is arranged on the outer wall of the square block, the inner wall of the U-shaped block is rotatably connected with a rotating plate, the top of the rotating plate is fixedly connected with a compression spring, the top of the compression spring is fixedly connected with the inner wall of the U-shaped block, the right side of the rotating plate is fixedly connected with a clamping block, the inner wall of the U-shaped block is provided with a limiting column, the limiting column penetrates the U-shaped block and the square block and is fixedly connected with a clamping column, a plurality of clamping grooves are formed in the left side of the outer wall of the support disc, and the clamping grooves are clamped with the clamping block.

[0008] As a further description of the above technical scheme:

[0009] The outer wall right top of the valve pipe is fixedly connected with a limiting block, and the outer wall of the limiting block is fixedly connected with a nameplate.

[0010] As a further description of the above technical scheme:

[0011] The outer wall right side of the valve pipe is fixedly connected with a fixed plate, and the outer wall of the fixed plate is fixedly connected with a warning mark block.

[0012] As a further description of the above technical scheme:

[0013] The outer wall right side of the U-shaped block is fixedly connected with an indicating block, and a plurality of scale lines are formed in the right side of the top of the support disc.

[0014] As a further description of the above technical scheme:

[0015] The top of the U-shaped block is fixedly connected with a sponge block, and a plurality of handle grooves are formed in the outer wall of the rotating plate.

[0016] As a further description of the above technical scheme:

[0017] The arc-shaped valve is consistent in size with the inner wall of the valve pipe, and the outer wall of the arc-shaped valve is smooth.

[0018] As a further description of the above technical solution:

[0019] The inner wall of the sealing ring is consistent in size with the outer wall of the limiting frame, and the inner wall of the limiting frame is smooth.

[0020] The utility model has the advantages of the following:

[0021] 1. In the utility model, the flange and the threaded rod of the butterfly valve are connected and fixed by disassembling the fixing nut, the sealing ring is placed between the flange and the butterfly valve, the sealing ring is extruded by the fixing nut to fill the gap, the limiting frame ensures that the pipeline flange is centered to prevent leakage, the sliding space in the limiting frame provides buffering when the high-temperature expands, and the arc-shaped valve is opened only by rotating the square block to realize liquid circulation.

[0022] 2. In the utility model, the U-shaped block is clamped outside the square block, the limiting column passes through the holes of the U-shaped block and the square block, and is fixed by the clamping column, when the arc-shaped valve is opened, the U-shaped block and the rotating plate are held, the rotating plate rotates in the U-shaped block, the compression spring is compressed, the clamping block is rotated to disengage from the clamping groove, the U-shaped block is rotated, the valve is easily opened by using the lever principle, after being loosened, the clamping block is re-clamped by the compression spring, the opening position is fixed, and the labor-saving butterfly valve is realized. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A perspective view of the handle type butterfly valve structure is provided for the utility model;

[0024] Figure 2 A front view of the handle type butterfly valve structure is provided for the utility model;

[0025] Figure 3 A top view of the handle type butterfly valve structure is provided for the utility model;

[0026] Figure 4 A valve pipe split view of the handle type butterfly valve structure is provided for the utility model;

[0027] Figure 5 A labor-saving mechanism split view of the handle type butterfly valve structure is provided for the utility model.

[0028] LEGEND:

[0029] 1, valve pipe; 2, labor-saving mechanism; 201, U-shaped block; 202, rotating plate; 203, extrusion spring; 204, clamping block; 205, limiting column; 206, clamping column; 207, clamping groove; 3, cylinder; 4, supporting disc; 5, rotating column; 6, arc-shaped valve; 7, square block; 8, limiting frame; 9, sealing ring; 10, threaded rod; 11, fixed nut; 12, limiting block; 13, nameplate; 14, fixed plate; 15, warning mark block; 16, indicating block; 17, scale line; 18, sponge block; 19, handle groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] With reference to Figure 1 , Figure 4 and Figure 5 , an embodiment provided by the utility model: handle type butterfly valve structure, including valve pipe 1, the outer wall top of valve pipe 1 is communicated with cylinder 3, the top of cylinder 3 is fixedly connected with supporting disc 4, the inner wall of cylinder 3 is rotatably connected with rotating column 5, the bottom of rotating column 5 is fixedly connected with arc-shaped valve 6, the arc-shaped appearance of arc-shaped valve 6 makes it have better firmness, the top of rotating column 5 is fixedly connected with square block 7, rotating square block 7 can drive arc-shaped valve 6 to open, so as to complete the circulation of liquid, the outer wall front and back of valve pipe 1 is fixedly connected with limiting frame 8, the outer wall of limiting frame 8 is provided with sealing ring 9, sealing ring 9 is placed between flange and butterfly valve, sealing ring 9 can be extruded on the flange above the pipeline by fixed nut 11, so that sealing ring 9 is deformed in the process of extrusion, thereby filling the small gap between limiting frame 8 and pipeline flange, the inner wall of two sealing rings 9 is provided with a plurality of threaded rods 10, the outer wall front and back of threaded rod 10 is screw-connected with fixed nut 11, fixed nut 11 is rotated and detached from the top of threaded rod 10, then the flange on the pipeline is respectively clamped and butted with the front and back threaded rods 10 of butterfly valve, and is fixedly connected with butterfly valve by fixed nut 11, the outer wall of square block 7 is provided with labor-saving mechanism 2, labor-saving mechanism 2 is used to replace the upper handle according to the use scene;

[0032] Specifically, when installing the butterfly valve, the fixed nut 11 is first rotated and detached from the top of the threaded rod 10, then the flanges on the pipeline are respectively clamped and connected with the front and rear threaded rods 10 of the butterfly valve, and the fixed nut 11 is used to fixedly connect the flanges on the pipeline with the butterfly valve, at the same time, the sealing ring 9 placed between the flanges and the butterfly valve can be extruded by the fixed nut 11 on the flanges on the pipeline, so that the sealing ring 9 deforms in the extrusion process, thereby filling the small gap between the limiting frame 8 and the pipeline flanges, and the limiting frame 8 can make the flow area in the pipeline flanges be in the middle position, preventing the occurrence of small gaps when the pipeline flanges are slightly inclined during liquid flow, thereby causing leakage, and the limiting frame 8 has a small sliding space inside, which can provide simple buffering when swelling at high temperature, when the arc-shaped valve 6 needs to be opened, the square block 7 is only rotated to drive the arc-shaped valve 6 to open, thereby completing the flow of liquid, and due to the arc-shaped shape of the arc-shaped valve 6, it has better firmness, thereby preventing liquid leakage during installation.

[0033] Referring to Figure 1 , Figure 2 and Figure 5 , the labor-saving mechanism 2 includes a U-shaped block 201 provided on the outer wall of the square block 7, a rotating plate 202 rotatably connected to the inner wall of the U-shaped block 201, an extrusion spring 203 fixedly connected to the top of the rotating plate 202, the top of the extrusion spring 203 fixedly connected to the inner wall of the U-shaped block 201, a clamping block 204 fixedly connected to the right side of the rotating plate 202, a limiting column 205 provided on the inner wall of the U-shaped block 201, a clamping column 206 penetrating through the U-shaped block 201 and the square block 7 and fixedly connected to the outer wall of the limiting column 205, the U-shaped block 201 clamped on the outer side of the square block 7, then the limiting column 205 passes through the hole on the top of the U-shaped block 201 and the square block 7, and the limiting column 205 is fixed by the clamping column 206, a plurality of clamping grooves 207 are formed on the outer wall of the left side of the supporting disc 4, the clamping grooves 207 are clamped with the clamping block 204, the U-shaped block 201 and the rotating plate 202 are held, the rotating plate 202 is rotated in the U-shaped block 201, the extrusion spring 203 is compressed, the clamping block 204 is rotated towards the bottom, and the clamping block 204 is disengaged from the clamping groove 207;

[0034] Specifically, when the hydraulic pressure in the pipeline is too large, the resistance of rotating the square block 7 increases. At this time, the U-shaped block 201 is clamped on the outside of the square block 7, then the limiting column 205 is inserted through the U-shaped block 201 and the hole above the square block 7, and the limiting column 205 is fixed by the clamping column 206. When it is necessary to rotate and open the arc-shaped valve 6, at this time, only the U-shaped block 201 and the rotating plate 202 need to be held, so that the rotating plate 202 rotates in the U-shaped block 201, thereby compressing the compression spring 203, and driving the clamping block 204 to rotate to the bottom, so that the clamping block 204 and the clamping groove 207 are disengaged. Then rotate the U-shaped block 201, through the principle of lever, it can easily complete the opening of the arc-shaped valve 6, then release the holding of the U-shaped block 201 and the rotating plate 202, under the reset of the compression spring 203, the clamping block 204 is re-engaged with the clamping groove 207, thereby fixing the opening position, and making the opening of the butterfly valve more labor-saving.

[0035] With reference to Figure 1 , Figure 3 and Figure 4 , the outer wall of the valve pipe 1 is fixedly connected with a limiting block 12 on the right top side, the outer wall of the limiting block 12 is fixedly connected with a nameplate 13, the limiting block 12 can provide mounting space for the nameplate 13, and the nameplate 13 can record the model and basic situation of the equipment; the outer wall of the valve pipe 1 is fixedly connected with a fixed plate 14 on the right middle side, the outer wall of the fixed plate 14 is fixedly connected with a warning sign block 15, the fixed plate 14 can provide mounting space for the warning sign block 15, and the warning sign block 15 can prompt matters needing attention during use or installation; the outer wall of the U-shaped block 201 is fixedly connected with an indicating block 16 on the right side, a plurality of scale lines 17 are formed on the top right side of the supporting disc 4, the indicating block 16 can indicate the opening state of the arc-shaped valve 6 under the rotation of the U-shaped block 201, and the scale lines 17 can indicate the opening angle of the arc-shaped valve 6.

[0036] Specifically, the limiting block 12 can provide mounting space for the nameplate 13, the nameplate 13 can record the model and basic situation of the equipment, the fixed plate 14 can provide mounting space for the warning sign block 15, and the warning sign block 15 can prompt matters needing attention during use or installation, and the indicating block 16 can indicate the opening state of the arc-shaped valve 6 under the rotation of the U-shaped block 201, and the scale lines 17 can indicate the opening angle of the arc-shaped valve 6.

[0037] With reference to Figure 1 , Figure 2 and Figure 3, the top of the U-shaped block 201 is fixedly connected with a sponge block 18, a plurality of handle grooves 19 are formed in the outer wall of the rotating plate 202, the sponge block 18 can improve the use comfort of the U-shaped block 201, the handle grooves 19 can facilitate holding, and when the rotating plate 202 is pressed, the best position can be reached; the size of the arc-shaped valve 6 is consistent with the size of the inner wall of the valve pipe 1, so that no leakage occurs when closed, the outer wall of the arc-shaped valve 6 is smoothly processed, the outer wall of the arc-shaped valve 6 is smoothly processed to prevent liquid from remaining on it after flowing through; the size of the inner wall of the sealing ring 9 is consistent with the size of the outer wall of the limiting frame 8, which can reduce the gap at the connection, thereby preventing liquid from flowing out of the connection, the inner wall of the limiting frame 8 is smoothly processed to reduce the roughness and further reduce the gap;

[0038] Specifically, the sponge block 18 can improve the use comfort of the U-shaped block 201, the handle grooves 19 can facilitate holding, and when the rotating plate 202 is pressed, the best position can be reached, the size of the arc-shaped valve 6 is consistent with the size of the inner wall of the valve pipe 1, so that no leakage occurs when closed, and the outer wall of the arc-shaped valve 6 is smoothly processed to prevent liquid from remaining on it after flowing through, the size of the inner wall of the sealing ring 9 is consistent with the size of the outer wall of the limiting frame 8, which can reduce the gap at the connection, thereby preventing liquid from flowing out of the connection, the inner wall of the limiting frame 8 is smoothly processed to reduce the roughness and further reduce the gap.

[0039] Working principle: during the installation of the butterfly valve, the fixed nut 11 is first unscrewed from the top end of the threaded rod 10, then the flange on the pipeline is connected with the front and rear threaded rods 10 of the butterfly valve, and the fixed nut 11 is used to firmly connect the flange and the butterfly valve, and the sealing ring 9 should be placed between the flange and the butterfly valve, when the fixed nut 11 exerts pressure on the flange above the pipeline, the sealing ring 9 will deform due to extrusion, thereby filling the possible small gap between the limiting frame 8 and the pipeline flange, in addition, the limiting frame 8 ensures the central position of the flow area in the pipeline flange, avoiding the generation of gaps when the liquid flows due to slight inclination, thereby preventing leakage, the small sliding space inside the limiting frame 8 can provide a certain buffering effect when it expands at high temperature, if the arc-shaped valve 6 needs to be opened, the square block 7 only needs to be rotated to drive the arc-shaped valve 6 to open, realizing liquid flow, since the arc-shaped valve 6 is designed in an arc shape, its structure is more solid, which helps to reduce the risk of liquid leakage during installation;

[0040] And through the labor-saving mechanism 2, after installation is completed, if the hydraulic pressure in the pipeline is too high to cause the rotating resistance of the square block 7 to increase, the U-shaped block 201 is embedded outside the square block 7, then the limiting column 205 is passed through the U-shaped block 201 and the hole above the square block 7, and the limiting column 205 is fixed by using the clamping column 206, when the arc-shaped valve 6 needs to be opened, only the U-shaped block 201 and the rotating plate 202 need to be held, the rotating plate 202 is rotated in the U-shaped block 201, the compression spring 203 is compressed, the clamping block 204 is rotated to the bottom, the clamping block 204 is disengaged from the clamping groove 207, then the U-shaped block 201 is rotated, the lever principle is used, and the arc-shaped valve 6 is easily opened, after the U-shaped block 201 and the rotating plate 202 are released, under the resetting action of the compression spring 203, the clamping block 204 is re-engaged with the clamping groove 207, so that the opening position is fixed, and then the opening butterfly valve operation is more labor-saving.

[0041] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement is carried out to part technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A handle-type butterfly valve structure, including a valve pipe (1), characterized in that: The top of the outer wall of the valve pipe (1) is connected to a cylinder (3), the top of the cylinder (3) is fixedly connected to a support plate (4), the inner wall of the cylinder (3) is rotatably connected to a rotating column (5), the bottom of the rotating column (5) is fixedly connected to an arc valve (6), the top of the rotating column (5) is fixedly connected to a square block (7), the front and rear sides of the outer wall of the valve pipe (1) are fixedly connected to a limit frame (8), the outer wall of the limit frame (8) is provided with a sealing ring (9), the inner walls of the two sealing rings (9) are provided with multiple threaded rods (10), the front and rear sides of the outer wall of the threaded rods (10) are threadedly connected to a fixing nut (11), the outer wall of the square block (7) is provided with a force-saving mechanism (2), the force-saving mechanism (2) is used to replace the handle above according to the usage scenario.

2. The handle-type butterfly valve structure according to claim 1, characterized in that: The labor-saving mechanism (2) includes a U-shaped block (201), which is disposed on the outer wall of the square block (7). A rotating plate (202) is rotatably connected to the inner wall of the U-shaped block (201). A compression spring (203) is fixedly connected to the top of the rotating plate (202). The top of the compression spring (203) is fixedly connected to the inner wall of the U-shaped block (201). A locking block (204) is fixedly connected to the right side of the rotating plate (202). A limiting post (205) is provided on the inner wall of the U-shaped block (201). The outer wall of the limiting post (205) passes through the U-shaped block (201) and the square block (7) and is fixedly connected to a locking post (206). A plurality of locking slots (207) are opened on the left side of the outer wall of the support plate (4). The locking slots (207) engage with the locking block (204).

3. The handle-type butterfly valve structure according to claim 1, characterized in that: A limiting block (12) is fixedly connected to the top right side of the outer wall of the valve pipe (1), and a nameplate (13) is fixedly connected to the outer wall of the limiting block (12).

4. The handle-type butterfly valve structure according to claim 1, characterized in that: A fixing plate (14) is fixedly connected to the middle right side of the outer wall of the valve pipe (1), and a warning sign block (15) is fixedly connected to the outer wall of the fixing plate (14).

5. The handle-type butterfly valve structure according to claim 2, characterized in that: An indicator block (16) is fixedly connected to the right side of the outer wall of the U-shaped block (201), and multiple scale lines (17) are opened on the top right side of the support plate (4).

6. The handle-type butterfly valve structure according to claim 2, characterized in that: A sponge block (18) is fixedly connected to the top of the U-shaped block (201), and a plurality of handle grooves (19) are provided on the outer wall of the rotating plate (202).

7. The handle-type butterfly valve structure according to claim 1, characterized in that: The size of the arc-shaped valve (6) is the same as the inner wall size of the valve pipe (1), and the outer wall of the arc-shaped valve (6) is rounded.

8. The handle-type butterfly valve structure according to claim 1, characterized in that: The inner wall size of the sealing ring (9) is the same as the outer wall size of the limiting frame (8), and the inner wall of the limiting frame (8) is rounded.

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