Ventilation butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a ventilation butterfly valve which comprises a valve body, a connecting column is fixedly connected in the valve body, a supporting column is fixedly connected to the top of the connecting column, a fixing box is fixedly connected to the top of the supporting column, two sliding grooves are formed in the inner wall of the valve body, and the two sliding grooves are both formed in the connecting column. Connecting grooves are formed in the upper ends and the lower ends of the two supporting columns, two baffles are slidably connected into the two sliding grooves, a valve plate is rotatably connected into the valve body and arranged among the four baffles, a sliding mechanism for sliding the four baffles is arranged in the valve body, and a rotating mechanism for rotating the valve plate is arranged in the valve body. According to the butterfly valve, through the arrangement of the two baffles, when the butterfly valve is closed, the two baffles can block the surface of the valve plate, and therefore the sealing effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field especially relates to a ventilation butterfly valve. BACKGROUND

[0002] Butterfly valve is a kind of valve commonly used in fluid control, its structure is simple, small in size, light in weight, is usually used in the flow of fluid in pipeline, the main working principle of butterfly valve is through a disc-shaped valve plate in pipeline rotation to open or close the passage of fluid, ventilation butterfly valve is applied to the ventilation, environmental protection engineering dust-containing cold wind or hot wind gas pipeline in chemical industry, building material, power station, glass etc., as the pipeline control device of gaseous medium flow regulation or cut-off.

[0003] But some butterfly valves in the prior art when used in gas pipeline, since butterfly valve inside usually only through the rotation of valve plate, to control the circulation of gas, but since the valve plate usually does not set limit or sealing mechanism, will lead to some butterfly valves in the prior art, will easily produce gas leakage when actually used, resulting in poor sealing effect, therefore, the above problems need to be solved. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a ventilation butterfly valve.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A ventilation butterfly valve, including valve body, the valve body inside fixedly connected with connecting column, the connecting column top fixedly connected with support column, the support column top fixedly connected with fixed box, the valve body inner wall is equipped with two sliding grooves, two The sliding groove is arranged in the connecting column, two The support column upper and lower ends are equipped with connecting groove, two The sliding groove inside is slidably connected with two baffle, the valve body inside rotationally connected with valve plate, the valve plate is arranged between four baffles, the valve body inside is equipped with the sliding mechanism that slides four baffles, the valve body inside is equipped with the rotation mechanism that rotates valve plate, through the setting of two baffles, can when closing the butterfly valve, make two baffles to the surface of valve plate and block, to improve the sealing effect.

[0007] Preferably, the sliding mechanism comprises a lifting column, a vertical slot is vertically arranged in the support column, the lifting column is vertically and slidably connected to the vertical slot, first limiting grooves are vertically arranged on opposite sides of the vertical slot, pull rods are slidably connected to both ends of the support column, the top ends of the two pull rods are respectively hingedly connected to the two opposite sides of the surface of the lifting column, two top plates are slidably connected to the interiors of the two connecting grooves, the four top plates are respectively fixedly connected to the surface of the baffle, the bottom ends of the two pull rods are respectively hingedly connected to the surfaces of the two top plates at the top, a lead screw is rotatably connected to the interior of the support column, the lead screw is rotatably sleeved in the interior of the lifting column, a matching block is fixedly connected to the top of the lifting column, the matching block is slidably sleeved on the surface of the lead screw, the matching block cooperates with the lead screw, the top of the lead screw penetrates into the interior of the fixed box, the top of the lead screw is rotatably connected to the top of the interior of the fixed box, and the lifting column is limited to slide up and down, and under the connection of the two pull rods, the four baffles are caused to slide close to or away from each other.

[0008] Further, the lead screw is rotatably connected with a worm gear, the worm gear is sleeved on the surface of the lead screw, the interior of the fixed box is rotatably connected with a worm, the worm is horizontally arranged, the worm cooperates with the worm gear, the fixed box is provided with a motor, the output end of the motor is fixedly connected to one end of the worm, and the motor is used for rotating the lead screw.

[0009] Preferably, the rotating mechanism comprises a rotating head, a rotating shaft is sleeved at the center of the valve plate, the bottom end of the rotating shaft is rotatably sleeved on the bottom of the valve body, the top of the rotating shaft penetrates into the top of the valve body, the top of the rotating shaft is arranged in the support column, the valve body is provided with a torsion spring, the torsion spring is sleeved on the surface of the rotating shaft, the bottom end of the torsion spring is fixedly connected to the surface of the rotating shaft, the top end of the torsion spring is fixedly connected to the interior of the valve body, the top end of the torsion spring is fixedly connected with the rotating head, the rotating head is rotatably connected to the interior of the support column, the bottom of the lifting column is rotatably connected with a rotating sleeve, the rotating sleeve is fixedly connected with a connecting sleeve, the connecting sleeve is rotatably sleeved in the interior of the lifting column, the lead screw is rotatably sleeved in the interior of the connecting sleeve, two second limiting grooves are vertically arranged in the interior of the connecting sleeve, limiting columns are vertically and slidably connected to the interiors of the two second limiting grooves, the two limiting columns are fixedly connected to the surface of the lead screw, the bottom of the rotating sleeve is provided with a limiting hole, the limiting hole cooperates with the rotating head, and the limiting hole is sleeved on the surface of the rotating head, so that the valve plate is driven to rotate.

[0010] The utility model discloses the beneficial effects are:

[0011] The device in use, through the lifting column up and down sliding, in the process, also make the rotating sleeve always keep rotating, and under the connection of two pull rods, will make four baffle plate each other close or far away sliding, thereby facilitate to limit the valve plate surface, at the same time, also will make the sealing effect of the valve better, at the same time, the limiting hole in the bottom of rotating sleeve will drive the rotating head to rotate, so that the valve plate rotates, will open or close the device, thereby improving the use effect of the device. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a front view of a ventilation butterfly valve according to the utility model;

[0013] Figure 2 It is an internal structure section view of a ventilation butterfly valve according to the utility model;

[0014] Figure 3 It is Figure 2 the enlarged view of A;

[0015] Figure 4 It is a sliding mechanism schematic view of a ventilation butterfly valve according to the utility model;

[0016] Figure 5 It is a local structure schematic view of a ventilation butterfly valve according to the utility model;

[0017] Figure 6 It is a local structure section view of a ventilation butterfly valve according to the utility model.

[0018] In the drawing: 1, valve body; 2, connecting column; 21, support column; 22, fixed box; 23, sliding groove; 24, connecting groove; 25, vertical groove; 26, first limiting groove; 3, valve plate; 31, rotating shaft; 32, torsional spring; 33, rotating head; 4, motor; 41, worm; 5, baffle; 51, top plate; 6, lifting column; 61, pull rod; 63, matching block; 7, screw rod; 71, worm wheel; 72, limiting column; 8, rotating sleeve; 81, limiting hole; 82, connecting sleeve; 83, second limiting groove. DETAILED DESCRIPTION

[0019] 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, not all the embodiments.

[0020] Reference Figures 1-6The utility model provides a ventilation butterfly valve, including the valve body 1, the inside fixed connection of valve body 1 has the connecting column 2, the top fixed connection of connecting column 2 has the support column 21, the top fixed connection of support column 21 has the fixed box 22, the inner wall of valve body 1 is equipped with two sliding grooves 23, two sliding grooves 23 all are arranged in the inside of connecting column 2, two support columns 21 upper and lower ends are equipped with connecting groove 24, two sliding grooves 23 all are slidably connected with two baffle 5, the inside rotatable connection of valve body 1 has the valve plate 3, the valve plate 3 is arranged between four baffle 5, the inside of valve body 1 is equipped with the sliding mechanism of sliding four baffle 5, the inside of valve body 1 is equipped with the rotating mechanism of rotating valve plate 3, through the setting of two baffle 5, can when closing the butterfly valve, make two baffle 5 to the surface of valve plate 3 and block, thereby improve the sealing effect.

[0021] Referring to Figure 2 , Figure 4 and Figure 5 , in a preferred embodiment, the sliding mechanism includes a lifting column 6, the support column 21 is vertically provided with a vertical slot 25 inside, the lifting column 6 is vertically and slidably connected inside the vertical slot 25, the vertical slot 25 is vertically provided with a first limiting slot 26 on opposite sides inside, the support column 21 is slidably connected with a pull rod 61 at both ends inside, the top end of the two pull rods 61 is respectively hinged to the surface of the lifting column 6 on both sides, the two connecting grooves 24 are slidably connected with two top plates 51 inside, the four top plates 51 are respectively fixedly connected to the surface of the baffle 5, the bottom end of the two pull rods 61 is respectively hinged to the surface of the two top plates 51 on the top, the support column 21 is rotatably connected with a lead screw 7 inside, the lead screw 7 is rotatably sleeved inside the lifting column 6, the top of the lifting column 6 is fixedly connected with a matching block 63, the matching block 63 is slidably sleeved on the surface of the lead screw 7, the matching block 63 cooperates with the lead screw 7, the top of the lead screw 7 penetrates into the inside of the fixed box 22, the top of the lead screw 7 is rotatably connected to the inside top of the fixed box 22, for limiting the lifting column 6 to slide up and down, and under the connection of the two pull rods 61, the four baffles 5 will move closer to or away from each other.

[0022] Referring to Figure 1 , Figure 4 and Figure 6 , in a preferred embodiment, the lead screw 7 is rotatably connected with a worm wheel 71 inside, the worm wheel 71 is sleeved on the surface of the lead screw 7, the fixed box 22 is rotatably connected with a worm gear 41 inside, the worm gear 41 is horizontally arranged, the worm gear 41 cooperates with the worm wheel 71, the fixed box 22 is provided with a motor 4 on the surface, the output end of the motor 4 is fixedly connected to one end of the worm gear 41, for rotating the lead screw 7, under the cooperation of the matching block 63, the lifting column 6 will slide up and down.

[0023] Referring to Figure 2 , Figure 3 , Figure 5 and Figure 6In a preferred implementation, the rotating mechanism comprises a rotating head 33, a rotating shaft 31 sleeved at the center of the valve plate 3, the bottom end of the rotating shaft 31 is rotatably sleeved in the bottom of the valve body 1, the top of the rotating shaft 31 penetrates into the top of the valve body 1, the top of the rotating shaft 31 is arranged in the support column 21, a torsional spring 32 is arranged in the valve body 1, the torsional spring 32 is sleeved on the surface of the rotating shaft 31, the bottom end of the torsional spring 32 is fixedly connected to the surface of the rotating shaft 31, the top end of the torsional spring 32 is fixedly connected to the inside of the valve body 1, the top end of the torsional spring 32 is fixedly connected with the rotating head 33, the rotating head 33 is rotatably connected to the inside of the support column 21, the bottom of the lifting column 6 is rotatably connected with a rotating sleeve 8, the fixed part of the rotating sleeve 8 is fixedly connected with a connecting sleeve 82, the connecting sleeve 82 is rotatably sleeved in the inside of the lifting column 6, the screw rod 7 is rotatably sleeved in the inside of the connecting sleeve 82, two second limiting grooves 83 are vertically arranged in the inside of the connecting sleeve 82, two limiting columns 72 are vertically and slidably connected in the inside of the two second limiting grooves 83, the two limiting columns 72 are fixedly connected to the surface of the screw rod 7, a limiting hole 81 is arranged at the bottom of the rotating sleeve 8, the limiting hole 81 is matched with the rotating head 33, and the limiting hole 81 is sleeved on the surface of the rotating head 33, so as to drive the valve plate 3 to rotate.

[0024] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: in actual use, the two baffles 5 are arranged to block the surface of the valve plate 3 when the butterfly valve is closed, thereby improving the sealing effect; when in use, the device can be installed first, then the driving motor 4 drives the worm 41 to rotate, the screw rod 7 rotates through the cooperation of the worm wheel 71, and the lifting column 6 slides downward through the cooperation of the cooperation block 63; at this time, the two top plates 51 at the top slide away from each other through the arrangement of the two pull rods 61, the four baffles 5 slide away from each other, so that the four baffles 5 no longer adhere to the surface of the valve plate 3; then under the continuous rotation of the screw rod 7, the rotation of the screw rod 7 is limited by the two limiting columns 72, so that the connecting sleeve 82 and the rotating sleeve 8 rotate, the limiting hole 81 at the bottom of the rotating sleeve 8 is arranged on the surface of the rotating head 33, thereby driving the rotating head 33 and the valve plate 3 to rotate, thereby opening the device for use; when the valve needs to be closed, the driving motor 4 drives the worm 41 to drive in reverse, which makes the lifting column 6 and the rotating sleeve 8 slide upward, and the valve plate 3 also rotates in reverse to close, and the valve plate 3 is more stable under the arrangement of the torsional spring 32; then under the connection of the two pull rods 61, the four baffles 5 slide to the edge of the valve plate 3, thereby improving the sealing effect of the valve plate 3.

[0025] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical" and "horizontal" as can be perceived herein relative to the accompanying drawings refer to the orientation of the components being described. However, it is to be understood that the exemplary embodiments described herein can assume different alternative orientations, except where expressly specified to the contrary. It is also to be understood that the specific devices illustrated in the attached drawings, and described in the following specification are exemplary embodiments only and should not be typically construed as limiting the scope of the present application.

[0026] It is also important to note that the term "or" as used herein is intended to mean any possible combination of the enumerated items. For example, a list of items joined by "or" means any of the items can be present alone, or any combination of the items can be present. As used herein, the term "include" means include without limitation.

[0027] It should be noted that the terms "first", "second", and the like, as used herein do not necessarily have an ordinal meaning. Rather, such terms are used merely as a designation of the various objects or actions described herein. For example, a first entity could occur before a second entity in time, and / or a second entity could be temporally subsequent to a first entity, and both entities are of a same, or different, type. In addition, terms such as "comprise", "comprising", "include", "including", "contain", "containing", or "have" and their conjugates, are inclusive or open-ended and do not exclude additional, unrecited elements or method steps.

[0028] The preferred embodiments of the present application have been described herein above with the intent of illustrating the principles of operation of the present application. Accordingly, the exemplary embodiments herein should not be limited to the specific form set forth herein, but on the contrary, it is intended to cover such alternatives, modifications, and equivalents, as can be within the spirit and scope of the present application.

Claims

1. A ventilating butterfly valve comprising a valve body (1), characterized in that The valve body (1) is internally connected with a connecting column (2), the top of the connecting column (2) is fixedly connected with a supporting column (21), the top of the supporting column (21) is fixedly connected with a fixed box (22), two sliding grooves (23) are arranged on the inner wall of the valve body (1), both of the two sliding grooves (23) are arranged in the connecting column (2), the upper and lower ends of both of the two supporting columns (21) are provided with connecting grooves (24), both of the two sliding grooves (23) are slidably connected with two baffle plates (5), the valve body (1) is rotatably connected with a valve plate (3), the valve plate (3) is arranged between the four baffle plates (5), the valve body (1) is provided with a sliding mechanism for sliding the four baffle plates (5), and the valve body (1) is provided with a rotating mechanism for rotating the valve plate (3).

2. A ventilated butterfly valve according to claim 1, wherein The sliding mechanism comprises a lifting column (6), a vertical groove (25) is vertically arranged in the supporting column (21), the lifting column (6) is vertically and slidably connected in the vertical groove (25), first limiting grooves (26) are vertically arranged on opposite sides in the vertical groove (25), and pulling rods (61) are slidably connected to both ends of the supporting column (21). Both ends of the two pulling rods (61) are respectively hinged to the surfaces of the two symmetrical sides of the lifting column (6).

3. A ventilated butterfly valve according to claim 2, wherein Both of the two connecting grooves (24) are slidably connected with two top plates (51), and the four top plates (51) are respectively fixedly connected to the surfaces of the baffle plates (5). The bottom ends of the two pulling rods (61) are respectively hinged to the surfaces of the two top plates (51) on the top.

4. A ventilated butterfly valve according to claim 3, wherein The supporting column (21) is rotatably connected with a lead screw (7), the lead screw (7) is rotatably sleeved in the lifting column (6), the top of the lifting column (6) is fixedly connected with a matching block (63), the matching block (63) is slidably sleeved on the surface of the lead screw (7), the matching block (63) cooperates with the lead screw (7), the lead screw (7) penetrates into the fixed box (22), and the top of the lead screw (7) is rotatably connected to the top of the fixed box (22).

5. A ventilated butterfly valve according to claim 4, wherein The inside of the lead screw (7) is rotatably connected with a worm wheel (71), the worm wheel (71) is sleeved on the surface of the lead screw (7), the inside of the fixed box (22) is rotatably connected with a worm (41), the worm (41) is horizontally arranged, the worm (41) cooperates with the worm wheel (71), the surface of the fixed box (22) is provided with a motor (4), and the output end of the motor (4) is fixedly connected to one end of the worm (41).

6. A ventilated butterfly valve according to claim 5, wherein The rotating mechanism comprises a rotating head (33), a rotating shaft (31) is sleeved at the center of the inside of the valve plate (3), the bottom end of the rotating shaft (31) is rotatably sleeved in the bottom of the valve body (1), the top of the rotating shaft (31) penetrates into the top of the valve body (1), the top of the rotating shaft (31) is arranged in the inside of the supporting column (21), a torsional spring (32) is arranged in the inside of the valve body (1), the torsional spring (32) is sleeved on the surface of the rotating shaft (31), the bottom end of the torsional spring (32) is fixedly connected to the surface of the rotating shaft (31), the top end of the torsional spring (32) is fixedly connected to the inside of the valve body (1), the top end of the torsional spring (32) is fixedly connected with the rotating head (33), and the rotating head (33) is rotatably connected to the inside of the supporting column (21).

7. A ventilated butterfly valve according to claim 6, wherein The bottom of the lifting column (6) is rotatably connected with a rotating sleeve (8), the fixed part of the rotating sleeve (8) is fixedly connected with a connecting sleeve (82), the connecting sleeve (82) is rotatably sleeved in the inside of the lifting column (6), the lead screw (7) is rotatably sleeved in the inside of the connecting sleeve (82), two second limiting grooves (83) are vertically formed in the inside of the connecting sleeve (82), limiting columns (72) are vertically and slidably connected in the insides of the two second limiting grooves (83), the two limiting columns (72) are fixedly connected to the surface of the lead screw (7), and the bottom of the rotating sleeve (8) is provided with a limiting hole (81).

Images