High-temperature sealing butterfly valve with good durability

Abstract

The high-temperature sealing butterfly valve with the good durability comprises a valve seat, a valve rod is connected to the interior of the valve seat in a transmitting mode, and a sealing assembly is arranged at one end of the valve rod. The sealing assembly comprises a valve clack center body fixed to one end of the valve rod, one end of the valve clack center body is fixedly connected with a second connector, the second connector is in threaded connection with a locking rod, one end of the valve clack center body is fixedly connected with a limiting ring, and the outer wall of the valve clack center body is sleeved with a valve clack abrasion-resistant body. A first connector is arranged at one end of the valve clack abrasion-resistant body, one end of the valve clack abrasion-resistant body is attached to the limiting ring, the outer ring of the valve clack abrasion-resistant body is attached to the inner wall of the valve seat, and the valve clack abrasion-resistant body is detachably connected with the valve clack center body. The whole service life of the valve clack center body and the valve clack wear-resisting body is guaranteed, meanwhile, the valve clack wear-resisting body is conveniently and independently replaced, and therefore the problem that the valve clack center body and the valve clack wear-resisting body need to be integrally replaced due to abrasion is solved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a high-temperature sealing butterfly valve with good durability. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for on-off control of low-pressure pipeline media. A butterfly valve refers to a valve whose closing member (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing.

[0003] At present, the disc of butterfly valve will suffer from severe wear due to frequent opening and closing during use. The disc and valve stem are usually an integrated structure, which not only has a short service life and is inconvenient to replace, but also has a high cost when replaced. Therefore, improvement is needed. Utility Model Content

[0004] The purpose of the utility model is to provide a high-temperature sealing butterfly valve with good durability, so as to solve the problem of the butterfly valve disc being easy to wear and difficult to replace and having a short service life proposed in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a high-temperature sealing butterfly valve with good durability, comprising a valve seat, a valve stem being internally connected to the valve seat, and a sealing assembly being provided at one end of the valve stem;

[0006] The sealing assembly includes a valve disc center body fixed at one end of the valve stem, one end of the valve disc center body is fixedly connected to a limit ring, a valve disc wear-resistant body is sleeved on the outer wall of the valve disc center body, one end of the valve disc wear-resistant body is fitted with the limit ring, the outer ring of the valve disc wear-resistant body is fitted with the inner wall of the valve seat, and the valve disc wear-resistant body and the valve disc center body are detachably connected.

[0007] Preferably, one end of the valve disc central body is fixedly connected to a second connector, and a locking rod is threadedly connected to the second connector.

[0008] Preferably, a first connector is provided at one end of the valve disc wear-resistant body, and the first connector corresponds to the second connector in position.

[0009] Preferably, the first connector and the second connector are respectively distributed in a circular shape with equal intervals on the outer walls of the valve disc wear-resistant body and the valve disc central body, and one end of the locking rod passes through the second connector and is connected to the first connector.

[0010] Preferably, a groove is formed at one end of the limiting ring, a sealing ring is provided inside the groove, and one end of the sealing ring is tightly fitted with the valve disc wear-resistant body.

[0011] Preferably, the material of the valve disc wear-resistant body is a wear-resistant material, and the material of the valve disc center body is a corrosion-resistant material.

[0012] Preferably, one side of the valve stem is transmission-connected with a handle, an outer wall of the valve stem is provided with a valve stem fixing frame, and one end of the valve stem fixing frame is fixedly connected to the valve disc center body.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) This device ensures the overall service life of the valve disc center body and the valve disc wear-resistant body while facilitating the replacement of the valve disc wear-resistant body separately, thereby solving the problem of the need to replace the valve disc center body and the valve disc wear-resistant body as a whole due to wear and tear, and reducing maintenance costs.

[0015] (2) This device sets the valve disc center body and the valve disc wear-resistant body in a split type, and sets the valve disc center body and the valve disc wear-resistant body to different materials, which saves costs while ensuring the service life. At the same time, it is convenient to replace the valve disc wear-resistant body after the valve disc wear-resistant body is worn, which is more convenient for maintenance.

[0016] (3) The device is provided with a first connector and a second connector on the outer wall of the valve disc center body and the valve disc wear-resistant body respectively, and the first connector and the second connector are connected by a locking rod. The locking rod can not only play a connecting role, but also play a role in strengthening support for the valve disc center body and the valve disc wear-resistant body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a high-temperature sealing butterfly valve with good durability in the utility model;

[0018] Figure 2 This utility model is a high-temperature sealing butterfly valve with good durability Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a side sectional view of the connection between the valve stem and the valve disc center body of a high-durability high-temperature sealing butterfly valve of the utility model;

[0020] Figure 4 This utility model is a high-temperature sealing butterfly valve with good durability Figure 3 Enlarged view of point B in the middle;

[0021] Figure 5 This is a rear view of the connection between the valve disc center body, the limiting ring and the valve disc wear-resistant body of a high-durability high-temperature sealing butterfly valve of the utility model.

[0022] In the figure: 1. valve stem; 2. handle; 3. valve seat; 4. sealing assembly; 41. valve disc center body; 42. valve disc wear-resistant body; 43. sealing ring; 44. first connector; 45. second connector; 46. locking rod; 47. limit ring; 5. valve stem fixing bracket. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-5 The utility model provides a technical solution: a high-temperature sealing butterfly valve with good durability, including a valve seat 3, a valve stem 1 is connected to the inside of the valve seat 3, a handle 2 is connected to one side of the valve stem 1, a valve stem fixing frame 5 is provided on the outer wall of the valve stem 1, and one end of the valve stem fixing frame 5 is fixedly connected to the valve disc center body 41; in this structure, the valve stem fixing frame 5 is fixedly connected to the valve disc center body 41 by bolts, so that the valve disc center body 41 can be fixedly connected to the valve stem 1; a sealing assembly 4 is provided at one end of the valve stem 1;

[0025] The sealing assembly 4 includes a valve disc central body 41 fixed to one end of the valve stem 1, one end of the valve disc central body 41 is fixedly connected to a second connector 45, and a locking rod 46 is threadedly connected to the second connector 45; this structure can control the connection and separation of the valve disc central body 41 and the valve disc wear-resistant body 42 by rotating the locking rod 46; one end of the valve disc central body 41 is fixedly connected to a limit ring 47, and one end of the valve disc wear-resistant body 42 is provided with a first connector 44, and the first connector 44 corresponds to the second connector 45 in position; this structure can To ensure that the locking rod 46 can be accurately connected to the first connector 44 and the second connector 45; the first connector 44 and the second connector 45 are respectively distributed in a circular shape with equal spacing on the outer wall of the valve disc wear-resistant body 42 and the valve disc center body 41, and one end of the locking rod 46 passes through the second connector 45 and is connected to the first connector 44; the locking rod 46 of this structure can connect the valve disc wear-resistant body 42 and the valve disc center body 41 by connecting the first connector 44 and the second connector 45, and the locking rod 46 can also The connection between the valve disc wear-resistant body 42 and the valve disc center body 41 plays the role of reinforcing ribs, thereby improving the firmness of the valve disc wear-resistant body 42 and the valve disc center body 41; the outer wall of the valve disc center body 41 is provided with a valve disc wear-resistant body 42, one end of the valve disc wear-resistant body 42 is fitted with a limiting ring 47, one end of the limiting ring 47 is provided with a groove, and a sealing ring 43 is provided inside the groove, and one end of the sealing ring 43 is tightly fitted with the valve disc wear-resistant body 42; this structure can ensure that the valve disc wear-resistant body 42 and the limiting ring 47 are connected when the valve disc wear-resistant body 42 is connected by providing a sealing ring 43. The gap is reduced to avoid leakage problems; the material of the valve flap wear-resistant body 42 is wear-resistant material, and the material of the valve flap center body 41 is corrosion-resistant material; in this structure, the valve flap wear-resistant body 42 is made of ceramic material; the valve flap center body 41 is made of corrosion-resistant metal material; the outer ring of the valve flap wear-resistant body 42 fits the inner wall of the valve seat 3, and the valve flap wear-resistant body 42 and the valve flap center body 41 are detachably connected; by setting a limit ring 47, the other end of the valve flap wear-resistant body 42 can be limited to ensure the stability of the valve flap wear-resistant body 42 during use.

[0026] Working principle: When using this high-durability high-temperature sealing butterfly valve, rotating the handle 2 can drive the valve stem 1 and the valve disc center body 41 to rotate. During the rotation, the valve disc center body 41 drives the valve disc wear-resistant body 42 to rub against the inner wall of the valve seat 3. When the valve disc wear-resistant body 42 is worn out due to long-term use and needs to be replaced, the locking rod 46 on the valve disc center body 41 can be rotated to disengage the locking rod 46 from the first connecting head 44. When the locking rod 46 is separated from the first connecting head 44, the valve disc wear-resistant body 42 can be separated from the outer wall of the valve disc center body 41. Then, a new valve disc wear-resistant body 42 is replaced and is sleeved on the outer wall of the valve disc center body 41 and fits on one end of the limit ring 47. Finally, the locking rod 46 is used to connect the first connecting head 44 with the second connecting head 45 to complete the fixation of the valve disc center body 41 and the valve disc wear-resistant body 42.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-temperature sealing butterfly valve with good durability, comprising a valve seat (3), wherein the valve seat (3) is internally connected to a valve stem (1), and characterized in that: A sealing assembly (4) is provided at one end of the valve stem (1); The sealing assembly (4) includes a valve disc center body (41) fixed to one end of the valve stem (1), one end of the valve disc center body (41) is fixedly connected to a limit ring (47), an outer wall of the valve disc center body (41) is provided with a valve disc wear-resistant body (42), one end of the valve disc wear-resistant body (42) is in contact with the limit ring (47), the outer ring of the valve disc wear-resistant body (42) is in contact with the inner wall of the valve seat (3), and the valve disc wear-resistant body (42) and the valve disc center body (41) are detachably connected.

2. A high-temperature sealing butterfly valve with good durability according to claim 1, characterized in that: One end of the valve disc central body (41) is fixedly connected to a second connector (45), and a locking rod (46) is threadedly connected to the second connector (45).

3. The high-temperature sealing butterfly valve with good durability according to claim 1, characterized in that: A first connector (44) is provided at one end of the valve disc wear-resistant body (42), and the first connector (44) and the second connector (45) are positioned correspondingly.

4. A high-temperature sealing butterfly valve with good durability according to claim 3, characterized in that: The first connector (44) and the second connector (45) are respectively distributed in a circular shape with equal intervals on the outer walls of the valve disc wear-resistant body (42) and the valve disc central body (41), and one end of the locking rod (46) passes through the second connector (45) and is connected to the first connector (44).

5. The high-temperature sealing butterfly valve with good durability according to claim 1, characterized in that: One end of the limiting ring (47) is provided with a groove, and a sealing ring (43) is provided inside the groove. One end of the sealing ring (43) is tightly fitted with the valve disc wear-resistant body (42).

6. A high-temperature sealing butterfly valve with good durability according to claim 1, characterized in that: The material of the valve disc wear-resistant body (42) is a wear-resistant material, and the material of the valve disc center body (41) is a corrosion-resistant material.

7. The high-temperature sealing butterfly valve with good durability according to claim 1, characterized in that: One side of the valve stem (1) is transmission-connected to a handle (2), and a valve stem fixing frame (5) is provided on the outer wall of the valve stem (1), and one end of the valve stem fixing frame (5) is fixedly connected to the valve disc center body (41).

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