Metal hard sealing butterfly valve

Abstract

The utility model discloses a metal hard sealing butterfly valve which comprises a hard sealing valve body, a valve plate is arranged on the inner side of the hard sealing valve body, a dismounting unit is arranged on the outer side of the hard sealing valve body and comprises a dust cover, and the dust cover is arranged on the outer side of the upper end of the hard sealing valve body. A limiting block is arranged on the outer side of the lower end of the hard sealing valve body, a motor is fixedly connected to the upper side of the dust cover, limiting grooves are formed in the outer sides of the upper end and the lower end of the valve plate, connecting rods are arranged on the inner sides of the limiting grooves, and rotating rods are fixedly connected to the outer sides of the connecting rods. By arranging the rotating rod, the connecting rods, the limiting grooves, the connecting plate and the electric push rod, the connecting rods on the upper side and the lower side can be conveniently and rapidly detached from the corresponding limiting grooves in the valve plate, workers can conveniently detach the abraded valve plate, operation is easy, and the workload of the workers is reduced.

Description

Technical Field

[0001] The utility model relates to the field of butterfly valves, in particular to a metal hard-sealed butterfly valve. Background Art

[0002] The hard-sealed butterfly valve, also known as the flap valve, is a simple-structured regulating valve that can also be used for the on-off control of low-pressure pipeline media. The hard-sealed butterfly valve mainly plays a role of cutting off and throttling in the pipeline.

[0003] A valve plate is provided inside the butterfly valve, and the valve plate is connected to the valve shaft. The valve shaft drives the valve plate to rotate, which is convenient for controlling the opening and closing of the butterfly valve. When the butterfly valve is in use, mud and sand will pass through the hard-sealed valve body, and some of the mud and sand will remain on the inner wall of the butterfly valve, causing the valve plate to rub against the inner wall of the hard-sealed valve body when the valve plate rotates, causing the valve plate to be worn. Since the valve plate is fixedly connected to the valve shaft, it is inconvenient to disassemble the valve plate, which increases the workload of maintenance personnel. Utility Model Content

[0004] In order to overcome the disadvantage of the prior art that the worn valve plate is not easy to disassemble, one of the purposes of the utility model is to provide a metal hard seal butterfly valve. By providing a disassembly unit, the worn valve plate can be quickly disassembled, reducing the workload of the staff.

[0005] One of the purposes of the utility model is achieved by the following technical solution:

[0006] A metal hard-sealed butterfly valve comprises a hard-sealed valve body: a valve plate is arranged on the inner side of the hard-sealed valve body, and a disassembly unit is arranged on the outer side of the hard-sealed valve body;

[0007] The disassembly unit includes a dust cover, which is arranged on the outer side of the upper end of the hard-sealed valve body, a limiting block is arranged on the outer side of the lower end of the hard-sealed valve body, a motor is fixedly connected to the upper side of the dust cover, limiting grooves are provided on the outer sides of the upper and lower ends of the valve plate, a connecting rod is arranged on the inner side of the limiting groove, a rotating rod is fixedly connected to the outer side of the connecting rod, a connecting plate is fixedly connected to the outer side of the dust cover and the limiting block, a fixing block is fixedly connected to the outer side of the hard-sealed valve body, and an electric push rod is fixedly connected between the fixing block and the connecting plate.

[0008] According to the metal hard-sealed butterfly valve, the connecting rod and the limiting groove are adapted to each other.

[0009] According to the metal hard-sealed butterfly valve, the output end of the motor is fixedly connected to the upper end of the upper rotating rod, so as to drive the valve plate to rotate.

[0010] According to the metal hard seal butterfly valve, the lower side of the rotating rod is rotatably connected to the limit block.

[0011] According to the metal hard-sealed butterfly valve, the outer sides of the dust cover and the limit block are fixedly connected with magnetic blocks, so as to facilitate the limiting of the dust cover and the limit block.

[0012] According to the metal hard-sealed butterfly valve, the magnetic block is arranged in an arc-shaped structure, so as to be convenient for fitting the hard-sealed valve body structure.

[0013] According to the metal hard-sealed butterfly valve, flanges are fixedly connected to both the front and rear sides of the hard-sealed valve body, which are used to connect the external pipeline to the hard-sealed valve body.

[0014] According to the metal hard-sealed butterfly valve, the connecting rod and the limiting groove are both arranged in a cross-shaped structure, which facilitates the limiting of the connecting rod on the valve plate.

[0015] The above scheme has the following beneficial effects:

[0016] By providing a rotating rod, a connecting rod, a limit groove, a connecting plate and an electric push rod, it is convenient to quickly remove the connecting rods on the upper and lower sides from the corresponding limit grooves on the valve plate, so that the staff can remove the worn valve plate conveniently, the operation is simple, and the workload of the staff is reduced.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0019] Figure 1 This is an overall three-dimensional structural diagram of a metal hard-sealed butterfly valve of the utility model;

[0020] Figure 2 This is a front view of the interior of a metal hard seal butterfly valve of the utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the middle valve plate of a metal hard-sealed butterfly valve of the utility model;

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0023] Legend:

[0024] 1. Hard seal valve body; 2. Flange; 3. Valve plate; 4. Disassembly unit; 401. Dust cover; 402. Motor; 403. Limit block; 404. Rotating rod; 405. Connecting rod; 406. Limit groove; 407. Connecting plate; 408. Electric push rod; 409. Fixed block; 410. Magnetic block. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] Reference Figure 1-4 The utility model embodiment is a metal hard-sealed butterfly valve, including a hard-sealed valve body 1: a valve plate 3 is arranged on the inner side of the hard-sealed valve body 1, a disassembly unit 4 is arranged on the outer side of the hard-sealed valve body 1, and flanges 2 are fixedly connected to the front and rear sides of the hard-sealed valve body 1, and the flanges 2 are components for connecting to external pipelines.

[0027] The disassembly unit 4 includes a dust cover 401, which is arranged on the outer side of the upper end of the hard-sealed valve body 1, and a limiting block 403 is arranged on the outer side of the lower end of the hard-sealed valve body 1. The upper side of the dust cover 401 is fixedly connected to a motor 402. Limiting grooves 406 are provided on the outer sides of the upper and lower ends of the valve plate 3. A connecting rod 405 is arranged on the inner side of the limiting groove 406. A rotating rod 404 is fixedly connected to the outer side of the connecting rod 405. A connecting plate 407 is fixedly connected to the outer side of the dust cover 401 and the limiting block 403. A fixing block 409 is fixedly connected to the outer side of the hard-sealed valve body 1. An electric push rod 408 is fixedly connected between the fixing block 409 and the connecting plate 407. The connecting rod 405 and the limiting groove 406 are adapted to each other. Both the connecting rod 405 and the limiting groove 406 are arranged in a cross-shaped structure. When the hard-sealed valve body 1 is used, the motor 402 is started, and the motor 4 02 drives the upper rotating rod 404 to rotate, and the upper rotating rod 404 drives the connecting rod 405 to rotate. Due to the lower connecting rod 405 and the rotating rod 404, the valve plate 3 rotates, which is convenient for controlling the opening and closing of the hard density butterfly valve. When the valve plate 3 is worn out due to use, the worn valve plate 3 needs to be removed for maintenance. First, the electric push rods 408 on the upper and lower sides are extended and retracted, and the electric push rods 408 drive the connecting plate 407 to move. The connecting plates 407 on the upper and lower sides drive the dust cover 401 and the limit block 403 to quickly separate from the hard density valve body 1, so that the dust cover 401 and the limit block 403 quickly drive the corresponding rotating rod 404 and the connecting rod 405 to move, which is convenient for the rotating rod 404 and the connecting rod 405 to separate from the limit groove 406. Then the valve plate 3 without limit is removed, which is convenient for the staff to maintain in the later stage. The operation is simple and the workload of the staff is reduced.

[0028] The output end of the motor 402 is fixedly connected to the upper end of the upper rotating rod 404 , and the lower rotating rod 404 is rotatably connected to the limit block 403 , so that the motor 402 can control the rotation of the valve plate 3 .

[0029] The outer sides of the dust cover 401 and the limit block 403 are fixedly connected with a magnetic block 410, and the magnetic block 410 is an arc-shaped structure. Since the hard-density valve body 1 is made of alloy material, the arc-shaped magnetic block 410 is adsorbed on the outer side of the hard-density valve body 1, thereby increasing the stability of the connection between the dust cover 401 and the limit block 403.

[0030] Working principle: When in use, the staff will first start the motor 402, and through the rotating rod 404 and the connecting rod 405 on the upper and lower sides, the motor 402 drives the valve plate 3 to rotate, so as to control the opening and closing of the hard density valve body 1.

[0031] When the valve plate 3 needs to be removed, the staff controls the electric push rods 408 on the upper and lower sides to drive the connecting rods 405 and the rotating rods 404 on the upper and lower sides to separate from the limiting grooves 406, and then the staff takes the valve plate 3 out of the hard density valve body 1. The operation is simple and convenient for the staff to perform subsequent maintenance.

[0032] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A metal hard seal butterfly valve, characterized in that: It comprises a hard-sealed valve body (1), wherein a valve plate (3) is arranged on the inner side of the hard-sealed valve body (1), and a disassembly unit (4) is arranged on the outer side of the hard-sealed valve body (1); The disassembly unit (4) comprises a dust cover (401), wherein the dust cover (401) is arranged on the outer side of the upper end of the hard-sealed valve body (1), and a limit block (403) is arranged on the outer side of the lower end of the hard-sealed valve body (1). The upper side of the dust cover (401) is fixedly connected to a motor (402), and limit grooves (406) are provided on the outer sides of the upper and lower ends of the valve plate (3). A connecting rod (405) is arranged on the inner side of the limit groove (406), and a rotating rod (404) is fixedly connected to the outer side of the connecting rod (405). A connecting plate (407) is fixedly connected to the outer side of the dust cover (401) and the limit block (403), and a fixed block (409) is fixedly connected to the outer side of the hard-sealed valve body (1), and an electric push rod (408) is fixedly connected between the fixed block (409) and the connecting plate (407).

2. A metal hard seal butterfly valve according to claim 1, characterized in that: The connecting rod (405) and the limiting groove (406) are adapted to fit each other.

3. A metal hard seal butterfly valve according to claim 1, characterized in that: The output end of the motor (402) is fixedly connected to the upper end of the upper rotating rod (404).

4. A metal hard seal butterfly valve according to claim 1, characterized in that: The rotating rod (404) on the lower side is rotatably connected to the limiting block (403).

5. The metal hard seal butterfly valve according to claim 1, characterized in that: The outer sides of the dust cover (401) and the limiting block (403) are both fixedly connected with a magnetic attraction block (410).

6. A metal hard seal butterfly valve according to claim 5, characterized in that: The magnetic attraction block (410) is arranged in an arc-shaped structure.

7. The metal hard seal butterfly valve according to claim 1, characterized in that: Flange plates (2) are fixedly connected to both the front and rear sides of the hard sealing valve body (1).

8. The metal hard seal butterfly valve according to claim 1, characterized in that: The connecting rod (405) and the limiting groove (406) are both arranged in a cross-shaped structure.

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