CN210600230U - Connecting structure of valve rod and butterfly plate of eccentric butterfly valve - Google Patents
Connecting structure of valve rod and butterfly plate of eccentric butterfly valve Download PDFInfo
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- CN210600230U CN210600230U CN201921464350.8U CN201921464350U CN210600230U CN 210600230 U CN210600230 U CN 210600230U CN 201921464350 U CN201921464350 U CN 201921464350U CN 210600230 U CN210600230 U CN 210600230U
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- butterfly plate
- valve rod
- butterfly
- eccentric
- butterfly valve
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Abstract
The utility model discloses an eccentric butterfly valve rod and butterfly plate connection structure. The utility model provides an eccentric butterfly valve rod and butterfly plate connection structure, includes eccentric butterfly valve rod, butterfly plate, moves back the round pin of pulling out, the plug is provided with the keyway on the eccentric butterfly valve rod, and the butterfly plate is provided with blind pinhole, and the plug of installing on the blind pinhole open end that the butterfly plate set up when the rotation is with one side for the fastening of the top of the round pin of pulling out of wedge face, one side is that the round pin of pulling out of wedge face can be interference fit with the blind pinhole that the butterfly plate set up, the keyway that sets up on the eccentric butterfly valve rod in proper order. The valve rod of the eccentric butterfly valve is fixedly connected with the butterfly plate in a sealing way, and the leakage at the joint of the valve rod of the eccentric butterfly valve and the butterfly plate is prevented; the valve rod of the eccentric butterfly valve and the butterfly plate connecting piece are convenient to mount, dismount and replace, and the cost for maintaining the eccentric butterfly valve is reduced.
Description
Technical Field
The utility model belongs to an eccentric butterfly valve especially belongs to an eccentric butterfly valve rod and butterfly plate connection structure.
Background
At present, a valve rod and a butterfly plate of the existing eccentric butterfly valve are usually connected by using a taper pin, and the problem of leakage of a pin hole of the butterfly plate is easy to occur due to the fact that the pin hole arranged on the butterfly plate is a through hole in the connecting mode, so that the product quality of the eccentric butterfly valve is influenced; meanwhile, the taper pin is not convenient to disassemble and difficult to replace, and the maintenance and replacement cost of the eccentric butterfly valve is increased. How to realize the fixed connection of the valve rod of the eccentric butterfly valve and the butterfly plate, the leakage of the joint of the valve rod of the eccentric butterfly valve and the butterfly plate is prevented, and the product quality of the eccentric butterfly valve is improved; how to make things convenient for installation and dismantlement change of eccentric butterfly valve rod and butterfly plate connecting piece, it is the problem that needs to solve to reduce the maintenance eccentric butterfly valve cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a connecting structure of a valve rod and a butterfly plate of an eccentric butterfly valve is provided. The connecting structure of the valve rod and the butterfly plate of the eccentric butterfly valve can realize the sealing and fixed connection of the valve rod and the butterfly plate of the eccentric butterfly valve, prevent the leakage of the connecting part of the valve rod and the butterfly plate of the eccentric butterfly valve and improve the product quality of the eccentric butterfly valve; the valve rod of the eccentric butterfly valve and the butterfly plate connecting piece can be conveniently mounted, dismounted and replaced, and the cost for maintaining the eccentric butterfly valve is reduced.
The utility model provides a technical scheme of above-mentioned technical problem is: the utility model provides an eccentric butterfly valve rod and butterfly plate connection structure, includes eccentric butterfly valve rod, butterfly plate, characterized by: the butterfly plate is provided with a blind pin hole at a position corresponding to the key groove arranged on the eccentric butterfly valve rod, an inner thread matched with the external thread of the plug is arranged on the inner wall of the opening end of the blind pin hole arranged on the butterfly plate, the withdrawing pin is a wedge-shaped withdrawing pin at one side, when the wedge-shaped withdrawing pin at one side is placed into the blind pin hole arranged on the butterfly plate by using external force, one side of the withdrawing pin which is the wedge-shaped surface can be tightly combined with the surface of the key groove surface arranged on the eccentric butterfly valve rod, the plug is rotatably arranged at the opening end of the blind pin hole of the butterfly plate, and the plug rotatably arranged at the opening end of the blind pin hole arranged on the butterfly plate can tightly push and fix the withdrawing pin which is the wedge-shaped surface and is placed into the blind pin hole arranged on the butterfly plate; when the plug rotatably mounted at the opening end of the blind pin hole formed in the butterfly plate fastens the pulling-back pin top with one side being a wedge-shaped surface, the pulling-back pin with one side being the wedge-shaped surface can be in interference fit with the blind pin hole formed in the butterfly plate and the key groove formed in the valve rod of the eccentric butterfly valve in sequence, and the valve rod of the eccentric butterfly valve can be fixedly connected with the butterfly plate in a sealing manner.
The utility model has the advantages that: because the utility model discloses set up and move back the pull pin, the plug, be provided with the keyway on the eccentric butterfly valve rod, the butterfly plate is provided with the blind pinhole with the keyway corresponding position that sets up on this eccentric butterfly valve rod, move back the pull pin and move back the pull pin for the wedge face for one side, when using external force to move back the pull pin for the wedge face and put into the blind pinhole that the butterfly plate set up for one side, move back one side that the pull pin is the wedge face and can realize closely combining with the face of the keyway face that sets up on the eccentric butterfly valve rod, the plug is rotatory to be installed on the blind pinhole opening end of butterfly plate, the plug that rotatory installation is on blind pinhole opening end of butterfly plate can be with putting into the blind pinhole that sets up of butterfly plate one side is the pull pin top of wedge face and fix; when the plug rotatably installed at the opening end of the blind pin hole of the butterfly plate fastens the pulling-back pin top with one side being a wedge-shaped surface, the pulling-back pin with one side being the wedge-shaped surface can be in interference fit with the blind pin hole formed in the butterfly plate and the key groove formed in the valve rod of the eccentric butterfly valve in sequence, and the valve rod of the eccentric butterfly valve can be fixedly connected with the butterfly plate in a sealing manner. The utility model realizes the sealing and fixed connection of the valve rod of the eccentric butterfly valve and the butterfly plate, and reduces the leakage point of the blind pin hole of the butterfly plate due to the blind pin hole arranged on the butterfly plate, so that the sealing of the valve rod of the eccentric butterfly valve and the butterfly plate is reliable and safe; the leakage at the joint of the valve rod and the butterfly plate of the eccentric butterfly valve is prevented, and the product quality of the eccentric butterfly valve is improved; the plug is rotatably installed on the opening end of the blind pin hole of the butterfly plate to prevent the withdrawal pin from withdrawing. The valve rod and the butterfly plate of the eccentric butterfly valve can be conveniently mounted, dismounted and replaced, and the cost for maintaining the eccentric butterfly valve is reduced.
Drawings
The present invention will be further explained with reference to the drawings and examples;
FIG. 1 is a schematic structural diagram of an eccentric butterfly valve according to the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
in the drawings: 1. the butterfly valve comprises an eccentric butterfly valve rod, 2 butterfly plates, 3 withdrawing pins, 4 plug bolts, 11 key grooves and 21 blind pin holes.
Detailed Description
The present invention will be described in further detail with reference to the following examples.
Example 1
As shown in fig. 1 and 2, the connecting structure of the valve rod and the butterfly plate of the eccentric butterfly valve comprises a valve rod 1 of the eccentric butterfly valve and a butterfly plate 2, and is characterized in that: the butterfly valve also comprises a withdrawing pin 3 and a plug 4, a key groove 11 is arranged on the eccentric butterfly valve rod 1, a blind pin hole 21 corresponding to the key groove 11 arranged on the eccentric butterfly valve rod is arranged on the butterfly plate 2, an internal thread matched with an external thread arranged on the plug 4 is arranged on the inner wall of the opening end of the blind pin hole 21 arranged on the butterfly plate, the withdrawal pin 3 is a withdrawal pin with a wedge-shaped surface at one side, when the withdrawal pin with the wedge-shaped surface at one side is placed into the blind pin hole 21 arranged on the butterfly plate by using external force, one side of the withdrawing pin which is a wedge-shaped surface can be tightly combined with the surface of the key groove 11 surface arranged on the eccentric butterfly valve rod 1, the plug 4 is rotatably mounted at the opening end of the blind pin hole 21 arranged on the butterfly plate, and the plug 4 rotatably mounted at the opening end of the blind pin hole 21 arranged on the butterfly plate can tightly push and fix the withdrawing pin which is arranged in the blind pin hole 21 arranged on the butterfly plate and has a wedge-shaped surface at one side; when the plug 4 of rotary installation on the blind pinhole 21 open end that the butterfly plate set up with one side for the back pin top fastening of wedge face at regular time, one side is the back pin of wedge face can be interference fit with blind pinhole 21 that the butterfly plate set up, the keyway 11 that sets up on the eccentric butterfly valve rod 1 in proper order, can realize that eccentric butterfly valve rod 1 and butterfly plate 2 seal fixed connection.
From the above description, those skilled in the art can make various changes and modifications without departing from the technical spirit of the present invention, and the present invention is within the protection scope of the present invention. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.
Claims (1)
1. The utility model provides an eccentric butterfly valve rod and butterfly plate connection structure, includes eccentric butterfly valve rod, butterfly plate, characterized by: the butterfly plate is provided with a blind pin hole at a position corresponding to the key groove arranged on the eccentric butterfly valve rod, an inner thread matched with the external thread of the plug is arranged on the inner wall of the open end of the blind pin hole arranged on the butterfly plate, the withdrawing pin is a wedge-shaped withdrawing pin at one side, when the withdrawing pin at one side is inserted into the blind pin hole arranged on the butterfly plate by using external force, one side of the withdrawing pin which is the wedge-shaped surface can be tightly combined with the surface of the key groove surface arranged on the eccentric butterfly valve rod, the plug is rotatably arranged at the opening end of the blind pin hole arranged on the butterfly plate, and the plug rotatably arranged at the open end of the blind pin hole arranged on the butterfly plate can tightly push and fix the withdrawing pin which is inserted into the blind pin hole arranged on the butterfly plate; when the plug rotatably mounted at the opening end of the blind pin hole formed in the butterfly plate fastens the pulling-back pin top with one side being a wedge-shaped surface, the pulling-back pin with one side being the wedge-shaped surface can be in interference fit with the blind pin hole formed in the butterfly plate and the key groove formed in the valve rod of the eccentric butterfly valve in sequence, and the valve rod of the eccentric butterfly valve can be fixedly connected with the butterfly plate in a sealing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464350.8U CN210600230U (en) | 2019-09-04 | 2019-09-04 | Connecting structure of valve rod and butterfly plate of eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464350.8U CN210600230U (en) | 2019-09-04 | 2019-09-04 | Connecting structure of valve rod and butterfly plate of eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210600230U true CN210600230U (en) | 2020-05-22 |
Family
ID=70695143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921464350.8U Active CN210600230U (en) | 2019-09-04 | 2019-09-04 | Connecting structure of valve rod and butterfly plate of eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210600230U (en) |
-
2019
- 2019-09-04 CN CN201921464350.8U patent/CN210600230U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |