Butterfly valve with flow adjusting structure

Abstract

The utility model relates to the field of butterfly valves, and discloses a butterfly valve with a flow adjusting structure, which comprises a butterfly valve body, the outer wall of the butterfly valve body is fixedly connected with a shell, the outer wall of the shell is fixedly connected with an electric push rod, the output end of the electric push rod is connected with a rack, and the outer wall of the rack is slidably connected to the inner wall of the shell. The tooth end of the rack is connected with a transmission gear, the inner wall of the butterfly valve body is rotationally connected with a rotating shaft, the lower surface of the rotating shaft is fixedly connected with a check block, the outer wall of the rack is provided with a sliding assembly, and the sliding assembly is used for limiting the sliding track of the rack. According to the butterfly valve, the electric push rod is started to drive the rack to slide, and then the transmission gear is driven by the rack to rotate, so that the effect that the flow of fluid in the butterfly valve body can be adjusted by controlling the size of the water conveying hole in the butterfly valve body, and the differential requirements of a user on the flow of the fluid under different working conditions are met can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve field especially relates to a butterfly valve with flow regulation structure. BACKGROUND

[0002] Butterfly valve is a kind of device for controlling fluid flow in pipeline system, in city water supply and sewage treatment system, butterfly valve is widely used in water intake, water supply pump house, sewage treatment tank etc. link, for controlling the on-off of water flow, guaranteeing the stability of city water supply and the efficient operation of sewage treatment.

[0003] The existing butterfly valve realizes the opening and closing of fluid passage by the rotation of butterfly plate around the shaft in valve body, but part of working condition needs to control the flow rate of fluid instead of simple opening and closing, so that butterfly valve cannot meet the demand of user. UTILITY MODEL CONTENT

[0004] In order to make up for the above insufficient, the utility model provides a butterfly valve with flow regulation structure, to improve the problem that butterfly valve cannot meet the demand of user because part of working condition needs to control the flow rate of fluid instead of simple opening and closing.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] A butterfly valve with flow regulation structure, including butterfly valve body, the outer wall of butterfly valve body is fixedly connected with shell, the outer wall of shell is fixedly connected with electric push rod, the output end of electric push rod is connected with rack, the outer wall of rack is slidably connected in the inner wall of shell, the tooth end of rack is connected with transmission gear, the inner wall of butterfly valve body is rotatably connected with shaft, the lower surface of shaft is fixedly connected with stop block, the outer wall of rack is provided with sliding assembly, and the sliding assembly is used to limit the sliding track of rack.

[0007] Preferably, the sliding assembly includes a sliding block, the outer wall of the sliding block is fixedly connected to the outer wall of the rack, a sliding groove is formed in the interior of the shell, and the outer wall of the sliding block is slidably connected to the interior of the shell through the sliding groove.

[0008] Preferably, the outer wall of the stop block is rotatably connected to the inner wall of the butterfly valve body, and the inner wall of the transmission gear is fixedly connected to the outer wall of the shaft.

[0009] Preferably, a waterproof pad is arranged in the interior of the butterfly valve body, and the inner wall of the butterfly valve body is fixedly connected with an infusion tube.

[0010] Preferably, a cap is threadedly connected to the upper outer wall of the infusion tube.

[0011] Preferably, the waterproof pad is internally provided with a sealing groove, and the outer wall of the infusion tube is arranged in the waterproof pad through the sealing groove.

[0012] The utility model has the advantages of the following:

[0013] 1、 the utility model discloses, through starting electric push rod drive rack slide, immediately transmission gear is driven under the rack self-rotation, thereby can reach through control butterfly valve body internal water hole size to adjust butterfly valve body internal fluid flow, satisfy the effect of the different needs of the user to fluid flow under different working conditions.

[0014] 2、 the utility model discloses, through installing waterproof pad in butterfly valve body's inside, and waterproof pad fills the gap when butterfly valve body is connected with other pipelines, thereby can reach the effect of improving the waterproof property of butterfly valve body, prevents fluid from spilling from the pipeline connection, avoids the damage of fluid leakage to the surrounding equipment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a kind of butterfly valve's three-dimensional structure schematic diagram with flow regulating structure for the utility model proposes;

[0016] Figure 2 It is the partial structure schematic diagram of the shaft of a kind of butterfly valve's with flow regulating structure for the utility model proposes;

[0017] Figure 3 It is the internal structure section view schematic diagram of the shell of a kind of butterfly valve's with flow regulating structure for the utility model proposes;

[0018] Figure 4 It is the partial structure schematic diagram of the sealing groove of a kind of butterfly valve's with flow regulating structure for the utility model proposes;

[0019] Figure 5 It is the partial structure schematic diagram of the cap of a kind of butterfly valve's with flow regulating structure for the utility model proposes.

[0020] LEGEND:

[0021] 1, butterfly valve body;2, shell;3, electric push rod;4, rack;5, sliding groove;6, shaft;7, transmission gear;8, stopper;9, sliding block;10, waterproof pad;11, infusion tube;12, cap;13, sealing groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the specification 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 belong to the protection scope of the utility model.

[0023] With reference to Figures 1-3 An embodiment provided by the utility model: a butterfly valve with flow adjusting structure, including butterfly valve body 1, the outer wall of butterfly valve body 1 is fixedly connected with shell 2, the outer wall of shell 2 is fixedly connected with electric push rod 3, the output end of electric push rod 3 is connected with rack 4, the outer wall of rack 4 is slidably connected in the inner wall of shell 2, the tooth end of rack 4 is connected with transmission gear 7, the inner wall of butterfly valve body 1 is rotatably connected with rotating shaft 6, the lower surface of rotating shaft 6 is fixedly connected with stop block 8, the outer wall of rack 4 is provided with sliding assembly, and sliding assembly is used to limit the sliding track of rack 4;

[0024] Specifically, by starting electric push rod 3, rack 4 is driven to slide along the inner wall of shell 2, then transmission gear 7 is driven to rotate by rack 4, and rack 4 is prevented from deviating under the action of sliding assembly, since rotating shaft 6 is fixedly connected with transmission gear 7, then rotating shaft 6 is driven to rotate in the interior of butterfly valve body 1 by transmission gear 7, since rotating shaft 6 is fixedly connected with stop block 8, then stop block 8 is driven to rotate on the inner wall of butterfly valve body 1 by rotating shaft 6, finally the purpose of controlling the rotation angle of stop block 8 by adjusting electric push rod 3 is realized, wherein electric push rod 3 is prior art, and more description is not given, so that the size of the water delivery hole in the interior of butterfly valve body 1 can be controlled to adjust the fluid flow in the interior of butterfly valve body 1, and the differentiated demand of users for fluid flow under different working conditions can be met.

[0025] With reference to Figure 3 The sliding assembly includes sliding block 9, the outer wall of sliding block 9 is fixedly connected with the outer wall of rack 4, the interior of shell 2 is provided with sliding groove 5, and the outer wall of sliding block 9 is slidably connected in the interior of shell 2 through sliding groove 5;

[0026] Specifically, since rack 4 and sliding block 9 are fixedly connected, sliding block 9 is driven to slide in the inner wall of shell 2 through sliding groove 5 by rack 4.

[0027] With reference to Figure 1 And Figure 2 The outer wall of stop block 8 is rotatably connected on the inner wall of butterfly valve body 1, and the inner wall of transmission gear 7 is fixedly connected on the outer wall of rotating shaft 6;

[0028] Specifically, stop block 8 is used to shield the water delivery hole provided in the interior of butterfly valve body 1, and transmission gear 7 is used to drive rotating shaft 6 to rotate.

[0029] Referring to Figure 1 , Figure 4 and Figure 5 , the inside of the butterfly valve body 1 is provided with a waterproof pad 10, and the inner wall of the butterfly valve body 1 is fixedly connected with a liquid delivery pipe 11; the upper outer wall of the liquid delivery pipe 11 is threadedly connected with a cap 12; the inside of the waterproof pad 10 is provided with a sealing groove 13, and the outer wall of the liquid delivery pipe 11 is arranged in the inside of the waterproof pad 10 through the sealing groove 13;

[0030] Specifically, the waterproof pad 10 is installed in the inside of the butterfly valve body 1, and the waterproof pad 10 is made of waterproof rubber and has good elasticity and waterproofness, which enables the waterproof pad 10 to fill the gap when the butterfly valve body 1 is connected with other pipelines, so as to avoid fluid overflow; meanwhile, the cap 12 is removed from the top end of the liquid delivery pipe 11 by rotating the cap 12, and then waterproof glue is poured into the sealing groove 13 through the hole arranged in the inside of the liquid delivery pipe 11 for filling, and the waterproof pad 10 is regularly supplemented with waterproof glue by maintenance personnel to fill the gap caused by aging of the waterproof pad 10, so that the waterproofness of the butterfly valve body 1 can be improved, and the effect of avoiding equipment damage caused by fluid overflow from the pipeline can be achieved.

[0031] Working principle: the rack 4 is driven to slide by starting the electric push rod 3, the transmission gear 7 is driven to rotate by the rack 4, the sliding block 9 is driven to slide by the rack 4, the rotating shaft 6 is driven to rotate by the transmission gear 7, and the stop block 8 is driven to rotate by the rotating shaft 6, so that the size of the water delivery hole in the inside of the butterfly valve body 1 can be controlled to adjust the fluid flow in the inside of the butterfly valve body 1, and the differentiated needs of users for fluid flow under different working conditions can be met.

[0032] The waterproof pad 10 is installed in the inside of the butterfly valve body 1 to fill the gap when the butterfly valve body 1 is connected with other pipelines, and the cap 12 is separated from the liquid delivery pipe 11 by rotating the cap 12, and then the waterproof glue is poured into the sealing groove 13 through the liquid delivery pipe 11 for filling, so that the waterproofness of the butterfly valve body 1 can be improved, fluid overflow from the pipeline connection can be prevented, and the damage of surrounding equipment caused by fluid leakage can be avoided.

[0033] Finally, it should be noted that: the above only describes preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A butterfly valve with a flow regulating structure, comprising a butterfly valve body (1), characterized in that: The outer wall of the butterfly valve body (1) is fixedly connected to a housing (2), and the outer wall of the housing (2) is fixedly connected to an electric push rod (3). The output end of the electric push rod (3) is connected to a rack (4). The outer wall of the rack (4) is slidably connected to the inner wall of the housing (2). The tooth end of the rack (4) is connected to a transmission gear (7). The inner wall of the butterfly valve body (1) is rotatably connected to a rotating shaft (6). The lower surface of the rotating shaft (6) is fixedly connected to a stop block (8). The outer wall of the rack (4) is provided with a sliding component, which is used to limit the sliding trajectory of the rack (4).

2. The butterfly valve with a flow regulating structure according to claim 1, characterized in that: The sliding assembly includes a slider (9), the outer wall of which is fixedly connected to the outer wall of the rack (4), and a groove (5) is provided inside the outer shell (2). The outer wall of the slider (9) is slidably connected to the inside of the outer shell (2) through the groove (5).

3. The butterfly valve with a flow regulating structure according to claim 1, characterized in that: The outer wall of the stop (8) is rotatably connected to the inner wall of the butterfly valve body (1), and the inner wall of the transmission gear (7) is fixedly connected to the outer wall of the rotating shaft (6).

4. A butterfly valve with a flow regulating structure according to claim 1, characterized in that: The butterfly valve body (1) is provided with a waterproof gasket (10) inside, and an infusion tube (11) is fixedly connected to the inner wall of the butterfly valve body (1).

5. A butterfly valve with a flow regulating structure according to claim 4, characterized in that: The upper outer wall of the infusion tube (11) is threaded with a cap (12).

6. A butterfly valve with a flow regulating structure according to claim 4, characterized in that: The waterproof pad (10) has a sealing groove (13) inside, and the outer wall of the infusion tube (11) is set inside the waterproof pad (10) through the sealing groove (13).

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