Butterfly valve with sealing structure convenient to replace

Abstract

The utility model discloses a butterfly valve with a sealing structure convenient to replace, and relates to the field of butterfly valve devices. The center shaft is rotatably connected with the inner wall of the butterfly valve body, the valve clack is connected with the outer wall of the center shaft, and two ends of the butterfly valve body are respectively provided with a group of mounting rings. According to the butterfly valve with the sealing structure convenient to replace, the sealing plate is arranged on the inner wall of the butterfly valve body, the sealing ring is arranged on the outer wall of the valve clack so that the joint of the butterfly valve body and the valve clack can be stably sealed, and the sealing plate is installed on the butterfly valve body through the connecting ring with the same appearance as the installation ring; and tight installation between the butterfly valve body and the conveying pipe cannot be hindered by overall installation of the sealing plate, and practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve with a sealing structure that is easy to replace. Background Art

[0002] The butterfly valve is composed of a butterfly valve body, a center shaft, a valve disc, a mounting ring and other components. The butterfly valve is mainly set between two adjacent groups of delivery pipes. By controlling the rotation angle of the valve disc relative to the butterfly valve body, the delivery flow of the two groups of delivery pipes is controlled.

[0003] In the prior art, a sealing device is provided on the inner wall of the butterfly valve body to increase the sealing performance of the connection between the butterfly valve body and the valve disc. However, it is inconvenient to replace the sealing device, so that when the sealing device fails, the butterfly valve will be discarded.

[0004] The main reason for the above problems is that the traditional sealing device and the butterfly valve are integrated and connected, so they cannot be replaced by simply disassembling them. Some of them also use screws and other components to install the sealing device and the inner wall of the butterfly valve. However, during the installation process, one end of the screw is not flush with the inner wall of the butterfly valve, so that one end of the screw is in a convex state, which leads to the uneven inner wall of the butterfly valve, so that the valve disc set on the inner wall of the butterfly valve will be hindered when rotating, or when the screw is set on the outer wall of the butterfly valve, it will cause the outer wall of the butterfly valve to bulge, affecting the sealing connection between the butterfly valve and the conveying pipe. In view of the above problems, we propose a butterfly valve with an easy-to-replace sealing structure. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a butterfly valve with an easy-to-replace sealing structure, which solves the problem that the sealing device at the butterfly valve is inconvenient to disassemble and the setting of the sealing device will affect the overall sealing performance of the butterfly valve.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the utility model is implemented through the following technical solutions: a butterfly valve with a sealing structure that is easy to replace, including a butterfly valve body, a central shaft rotatably connected to the inner wall of the butterfly valve body, and a valve disc connected to the outer wall of the central shaft, a group of mounting rings are arranged at both ends of the butterfly valve body, and a sealing mechanism is arranged on the inner wall of the butterfly valve body, and the sealing mechanism includes:

[0009] a connecting ring abutting against an outer wall of the mounting ring;

[0010] A sealing plate, which is fixedly connected to the outer wall of the connecting ring, one end of which is plugged into the inner wall of the butterfly valve body, and is used to seal the connection between the outer wall of the valve disc and the inner wall of the butterfly valve body;

[0011] The screw rod is used for assembly and disassembly between the connecting ring and the mounting ring.

[0012] Preferably, an installation groove for plug-in installation of a sealing plate is provided on the inner wall of the butterfly valve body, and reinforcing ribs for increasing the strength of the sealing plate are provided on the inner wall of the installation groove.

[0013] Preferably, a connecting hole is formed on a side of the sealing plate away from the connecting ring, and the sealing plate is sleeved on the outer wall of the reinforcing rib through the connecting hole.

[0014] Preferably, one end of the screw is fixedly connected to the outer wall of the connecting ring, and one end of the screw passes through the outer wall of one end of the mounting ring and is provided with a nut.

[0015] Preferably, a thread sealing ring is provided at one end of the connecting ring away from the screw.

[0016] Preferably, a thread groove is provided on one side of the connecting ring, and one end of the threaded sealing ring is threadably inserted into the thread groove.

[0017] Preferably, a sealing ring is provided on the outer wall of the valve disc, and the outer wall of the sealing ring abuts against the outer wall of the sealing plate.

[0018] The utility model discloses a butterfly valve with an easy-to-replace sealing structure, which has the following beneficial effects: the butterfly valve with an easy-to-replace sealing structure has a sealing plate arranged on the inner wall of the butterfly valve body and a sealing ring arranged on the outer wall of the valve disc, so as to stably seal the connection between the butterfly valve body and the valve disc, and the sealing plate is installed on the butterfly valve body through a connecting ring with the same shape as the mounting ring, so that the overall installation of the sealing plate will not hinder the tight installation between the butterfly valve body and the delivery pipe, and the practicality is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the valve disc and sealing ring structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the installation ring, connecting ring and screw structure of the utility model;

[0023] Figure 4 This is an exploded view of the installation ring and the connecting ring structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the connecting ring and the sealing plate of the utility model;

[0025] Figure 6 This is an exploded view of the structure of the connecting ring and the threaded sealing ring of the utility model;

[0026] Figure 7 It is a schematic diagram of the butterfly valve body, installation groove and reinforcing rib structure of the utility model.

[0027] In the figure: 1. Butterfly valve body; 101. Center axis; 102. Valve disc; 103. Mounting ring; 2. Sealing ring; 301. Connecting ring; 302. Sealing plate; 303. Screw; 304. Mounting groove; 305. Reinforcing rib; 306. Connecting hole; 307. Threaded groove; 308. Threaded sealing ring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0029] The embodiment of the present application achieves x by providing a butterfly valve with an easy-to-replace sealing structure.

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] The utility model embodiment discloses a butterfly valve with a sealing structure that is easy to replace.

[0032] According to the attached Figure 1-7 As shown, it includes a butterfly valve body 1, a central shaft 101 rotatably connected to the inner wall of the butterfly valve body 1, and a valve disc 102 connected to the outer wall of the central shaft 101. A group of mounting rings 103 are arranged at both ends of the butterfly valve body 1. The butterfly valve body 1, the central shaft 101, the valve disc 102 and the mounting ring 103 constitute a butterfly valve of model d341x. The butterfly valve is mainly arranged between two adjacent groups of delivery pipes to control the delivery flow of the two groups of delivery pipes.

[0033] The inner wall of the butterfly valve body 1 is provided with a sealing mechanism, which is mainly used to seal the outer wall of the valve disc 102 and the inner wall of the butterfly valve body 1. Figure 1 In the state shown, the sealing mechanism includes a connecting ring 301, the connecting ring 301 abuts against the outer wall of the mounting ring 103, and the connecting ring 301 and the mounting ring 103 have the same shape, so that when the sealing mechanism is installed, the sealing mechanism has an abrupt place on the butterfly valve body 1, the sealing plate 302 is fixedly connected to the outer wall of the connecting ring 301, and one end of the sealing plate 302 is plugged and arranged on the inner wall of the butterfly valve body 1, and the sealing plate 302 is used to seal the connection between the outer wall of the valve disc 102 and the inner wall of the butterfly valve body 1, and the outer wall of the valve disc 102 is provided A sealing ring 2 is provided, and the outer wall of the sealing ring 2 is against the outer wall of the sealing plate 302. The sealing plate 302 and the sealing ring 2 are made of the same material and are stably fitted together by friction. The screw 303 is used for disassembly and assembly between the connecting ring 301 and the mounting ring 103. One end of the screw 303 is fixedly connected to the outer wall of the connecting ring 301, and one end of the screw 303 passes through the outer wall of one end of the mounting ring 103 and is provided with a nut. The screw 303 and the nut can be provided to conveniently disassemble and assemble the sealing plate 302 and the butterfly valve body 1.

[0034] The inner wall of the butterfly valve body 1 is provided with an installation groove 304 for plugging and installing the sealing plate 302, and the inner wall of the installation groove 304 is provided with a reinforcing rib 305 for increasing the strength of the sealing plate 302. A connecting hole 306 is provided on the side of the sealing plate 302 away from the connecting ring 301, and the sealing plate 302 is sleeved on the outer wall of the reinforcing rib 305 through the connecting hole 306. The installation position of the sealing plate 302 relative to the butterfly valve body 1 can be positioned through the opening of the installation groove 304, and a threaded sealing ring 308 is provided at one end of the connecting ring 301 away from the screw rod 303, and a threaded groove 307 is provided on one side of the connecting ring 301, and one end of the threaded sealing ring 308 is threadedly inserted into the inside of the threaded groove 307. Through the threaded sealing ring 308, when the butterfly valve body 1 is installed between the conveying pipe, the connecting ring 301 on one side of the butterfly valve body 1 can fit tightly with the conveying pipe, thereby increasing the sealing performance of the connection between the butterfly valve body 1 and the conveying pipe.

[0035] In summary, compared with the prior art, the present invention has the following beneficial effects: the butterfly valve with easy replacement of sealing structure has a sealing plate 302 arranged on the inner wall of the butterfly valve body 1 and a sealing ring 2 arranged on the outer wall of the valve disc 102, so as to stably seal the connection between the butterfly valve body 1 and the valve disc 102, and the sealing plate 302 is installed on the butterfly valve body 1 through a connecting ring 301 which has the same shape as the mounting ring 103, so that the overall installation of the sealing plate 302 will not hinder the tight installation between the butterfly valve body 1 and the delivery pipe, and the practicality is good.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A butterfly valve with a sealing structure that is easy to replace, comprising a butterfly valve body (1), a central shaft (101) rotatably connected to the inner wall of the butterfly valve body (1), and a valve disc (102) connected to the outer wall of the central shaft (101), wherein a set of mounting rings (103) are provided at both ends of the butterfly valve body (1), and the characteristics are as follows: The inner wall of the butterfly valve body (1) is provided with a sealing mechanism, and the sealing mechanism comprises: A connecting ring (301) abutting against an outer wall of the mounting ring (103); A sealing plate (302) fixedly connected to the outer wall of the connecting ring (301), one end of the sealing plate (302) being plugged into the inner wall of the butterfly valve body (1), the sealing plate (302) being used to seal the connection between the outer wall of the valve disc (102) and the inner wall of the butterfly valve body (1); The screw rod (303) is used for assembly and disassembly between the connecting ring (301) and the mounting ring (103).

2. A butterfly valve with an easily replaceable sealing structure according to claim 1, characterized in that: The inner wall of the butterfly valve body (1) is provided with an installation groove (304) for plugging and installing the sealing plate (302), and the inner wall of the installation groove (304) is provided with reinforcing ribs (305) for increasing the strength of the sealing plate (302).

3. A butterfly valve with an easily replaceable sealing structure according to claim 2, characterized in that: A connection hole (306) is provided on a side of the sealing plate (302) away from the connection ring (301), and the sealing plate (302) is sleeved on the outer wall of the reinforcing rib (305) through the connection hole (306).

4. A butterfly valve with an easily replaceable sealing structure according to claim 3, characterized in that: One end of the screw rod (303) is fixedly connected to the outer wall of the connecting ring (301), and one end of the screw rod (303) passes through the outer wall of one end of the mounting ring (103) and is provided with a nut.

5. A butterfly valve with a sealing structure that is easy to replace according to claim 4, characterized in that: A thread sealing ring (308) is provided at one end of the connecting ring (301) away from the screw rod (303).

6. A butterfly valve with an easily replaceable sealing structure according to claim 5, characterized in that: A thread groove (307) is provided on one side of the connecting ring (301), and one end of the thread sealing ring (308) is threadedly inserted into the interior of the thread groove (307).

7. The butterfly valve with an easily replaceable sealing structure according to claim 1, characterized in that: The outer wall of the valve flap (102) is provided with a sealing ring (2), and the outer wall of the sealing ring (2) abuts against the outer wall of the sealing plate (302).

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