A manufacturing method and a using method of a butterfly valve device with a travel switch

Abstract

The present invention relates to a manufacturing method and a using method of a butterfly valve device with a travel switch, belonging to the technical field of fluid pipeline switch accessories, by fixing a valve stem on a butterfly plate, the valve stem radially passes through the valve body; a handle for controlling the rotation of the butterfly plate is fixedly connected to the end of the valve stem away from the butterfly plate; a boss is fixedly provided at one end of the handle, and a top pressure slope and a stop plane are cut on the boss; a travel switch is fixedly provided above the top pressure slope; and a trigger device is provided on one side of the travel switch relative to the boss top pressure slope, when the handle rotates around the axis of the valve stem, the trigger device can move upward under the action of the boss top pressure slope to compress the travel switch, until the trigger device moves to the stop plane and stops the handle from rotating. This method solves the problem that the poor contact between the butterfly valve handle and the travel switch in the fluid pipeline of the existing engineering project causes the intermittent loss of the output signal, resulting in a production line control chain failure and shutdown.

Description

Technical Field

[0001] The invention belongs to the technical field of fluid pipeline switch accessories, and relates to a manufacturing method and a use method of a butterfly valve device with a travel switch. Background Art

[0002] Butterfly valves are commonly used control switch devices on fluid pipelines. Butterfly valves with travel switches can facilitate staff in the PLC control room to understand whether the fluid pipeline is open by outputting switch quantity, and then perform a series of equipment interlocking control. The travel switch of the common butterfly valve with travel switch on the market is installed horizontally, and after the handle is rotated horizontally, the side of the handle contacts and compresses the internal spring of the travel switch to trigger the signal. However, since the reverse force of the travel switch always pushes the handle away and there is a contact gap between the handle and the butterfly valve due to manufacturing and installation errors, it is difficult to avoid the interlayer falling off due to long-term mechanical vibration, and the contact is disconnected again, and the control signal is lost, so that the interlocking control causes the production line to stop due to the wrong signal, resulting in significant economic losses. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a manufacturing method and a use method of a butterfly valve device with a travel switch to solve the problem that the butterfly valve handle and the travel switch in the fluid pipeline of the existing engineering project have poor contact, resulting in intermittent loss of output signals and causing production line control chain failures and shutdowns.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A method for manufacturing a butterfly valve device with a travel switch, the butterfly valve device comprising a valve body and a butterfly plate arranged in the valve body to control the passage of fluid; comprising the following steps:

[0006] A valve stem is fixedly connected to the butterfly plate, and the valve stem radially extends out of the valve body; a handle for controlling the rotation of the butterfly plate is fixedly connected to the end of the valve stem away from the butterfly plate; a boss is fixedly arranged at one end of the handle, and a top pressure slope and a stop plane connected to the top pressure slope are cut on the boss; a travel switch is fixedly arranged above the top pressure slope; and a trigger device is arranged on one side of the travel switch relative to the top pressure slope of the boss, and when the handle rotates around the axis of the valve stem, the trigger device can move upward under the action of the top pressure slope of the boss to compress the travel switch, until the trigger device moves to the stop plane and stops the handle from rotating.

[0007] Furthermore, the stop plane is parallel to a plane formed by the rotation of the handle; a friction pad or a wave or sawtooth pattern for increasing friction is arranged on the stop plane.

[0008] Furthermore, the travel switch is installed at 90° to the stop plane.

[0009] Furthermore, a fixedly connected vertical mounting frame is provided; the travel switch is mounted on the vertical mounting frame.

[0010] Furthermore, the boss and the handle are integrally formed or fixed by welding.

[0011] Furthermore, anti-slip grooves are provided on the gripping end of the handle.

[0012] Furthermore, stainless steel is used as the butterfly plate and valve body material.

[0013] A method for using a butterfly valve device with a travel switch, a butterfly valve device manufactured using the above method, and comprising the following steps:

[0014] The rotating handle drives the butterfly plate connected to the valve stem to rotate, and the boss at one end of the handle gradually approaches the travel switch; the trigger device on the travel switch moves relative to the inclined surface of the boss, and when the butterfly plate opening reaches the maximum, the trigger device runs along the inclined surface to the stop plane where the boss is away from the valve body; at this time, the trigger device of the travel switch is compressed and sends a signal.

[0015] Furthermore, a friction pad or a wave or sawtooth pattern for increasing friction is provided on the stop plane, so that the boss and the trigger device do not move relative to each other after the trigger device is located on the stop plane.

[0016] The beneficial effects of the present invention are:

[0017] The present invention vertically installs the travel switch and the boss stop plane. When the handle is opened and the travel switch is triggered, the reaction force of the travel switch can be made perpendicular to the movement direction of the handle to stabilize its contact strength. The travel switch will not be intermittently closed due to oil fluctuations, mechanical vibrations, and installation or manufacturing errors, thereby avoiding the chain control that causes the production line to stop due to the loss of the travel switch electrical signal, thereby improving the stability of the factory's continuous production and reducing the economic losses caused by the production line shutdown.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 It is a schematic diagram of a butterfly valve device with a travel switch;

[0021] Figure 2 It is a schematic diagram of a butterfly valve device with a travel switch when sending a signal;

[0022] Reference numerals: handle 1, boss 2, travel switch 3, vertical mounting frame 4, valve stem 5, valve body 6, butterfly plate 7. DETAILED DESCRIPTION

[0023] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0024] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0025] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] See also Figure 1-2 A method for manufacturing a butterfly valve device with a travel switch, the butterfly valve device comprising a valve body 6, and a butterfly plate 7 arranged in the valve body 6 for controlling the passage of fluid; specifically comprising the following steps:

[0027] A valve stem 5 is fixedly connected to the butterfly plate 7, and the valve stem 5 is radially passed through the valve body 6; a handle 1 for controlling the rotation of the butterfly plate 7 is fixedly connected to the end of the valve stem 5 away from the butterfly plate 7; the handle 1 can rotate around the axis of the valve stem 5 to form a rotation plane; and a boss 2 is fixedly provided at one end of the handle 1, and a surface of the boss 2 away from the handle 1 is cut into a top pressure slope, and a stop plane parallel to the rotation plane of the handle 1 is cut on the surface connected to the top pressure slope; a vertical mounting frame 4 is rotatably connected to the valve stem 5 for installing a travel switch 3, and the travel switch 3 is installed at 90 degrees to the stop plane; and a trigger device is provided on the side of the travel switch 3 relative to the top pressure slope of the boss 2, and the trigger device can move upward under the action of the top pressure slope of the boss 2 to compress the travel switch 3 until the trigger device moves to the stop plane and the handle stops rotating.

[0028] Specifically, the stop plane of the boss 2 away from the valve body 6 is provided with a friction pad or a wave or sawtooth pattern to increase friction. The vertical arrangement of the travel switch 3 and the stop plane of the boss can make the reaction force of the travel switch 3 perpendicular to the movement direction of the handle 1 of the butterfly valve, so that its contact strength is stable, and the travel switch 3 will not be intermittently closed due to oil fluctuations, mechanical vibrations, and installation or manufacturing errors; the stop plane is provided with a device to increase friction to prevent the relative sliding of the trigger device and the boss 2, further prevent the travel switch 3 from being closed, and increase the life of the travel switch 3. The travel switch 3 can be relatively moved on the vertical frame 4, and then fixed, so as to facilitate the determination of the best installation position. The vertical mounting frame 4 is rotatably connected to the valve stem 5 and fixed to other equipment, so that the vertical mounting frame is not driven to rotate when the valve stem 5 rotates.

[0029] Preferably, the boss 2 and the handle 1 are integrally formed or fixed by welding, so as to prevent the boss 2 and the handle 1 from moving relative to each other and affecting the travel switch 3 .

[0030] Preferably, an anti-slip pattern is provided at the gripping end of the handle 1 away from the boss 2 , so that the user can push the handle 1 more conveniently.

[0031] Preferably, stainless steel is used as the material of the butterfly plate 7 and the valve body 6 to prevent corrosion and increase the service life.

[0032] A method for using a butterfly valve device with a travel switch manufactured by the above method comprises the following steps:

[0033] The rotating handle 1 drives the butterfly plate 7 connected to the valve stem 5 to rotate, and the boss 2 at one end of the handle 1 gradually approaches the travel switch 3; at this time, the trigger device on the travel switch 3 moves relative to the inclined surface of the boss 2. When the opening of the butterfly plate 7 reaches the maximum, the trigger device moves along the inclined surface to the stop plane of the boss 2 away from the valve body 6; at this time, the trigger device of the travel switch 3 is compressed and sends a message. The stop plane of the boss 2 is provided with a friction pad or a wave or sawtooth pattern to increase friction; so that the trigger device does not move relative to the stop plane of the boss 2.

[0034] By installing the travel switch 3 perpendicular to the stop plane of the boss 2, when the handle 1 is opened and the travel switch 3 is triggered, the reaction force of the travel switch 3 can be made perpendicular to the movement direction of the handle 1, so that its contact strength is stable, and the travel switch 3 will not be intermittently closed due to oil fluctuations, mechanical vibrations, and installation or manufacturing errors, thereby avoiding the chain control caused by the loss of the electrical signal of the travel switch 3 that causes the production line to stop, thereby improving the stability of the factory's continuous production and reducing the economic losses caused by the production line stoppage.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A method for manufacturing a butterfly valve device with a travel switch, the butterfly valve device comprising a valve body and a butterfly plate arranged in the valve body to control the passage of fluid; characterized in that: The steps include: A valve stem is fixedly connected to the butterfly plate, and the valve stem radially passes through the valve body; a handle for controlling the rotation of the butterfly plate is fixedly connected to the end of the valve stem away from the butterfly plate; a boss is fixedly arranged at one end of the handle, and a top pressure slope and a stop plane connected to the top pressure slope are cut on the boss; a travel switch is fixedly arranged above the top pressure slope; and a trigger device is arranged on one side of the travel switch relative to the top pressure slope of the boss, and when the handle rotates around the axis of the valve stem, the trigger device can move upward under the action of the top pressure slope of the boss to compress the travel switch, until the trigger device moves to the stop plane and stops the handle from rotating; The stop plane is parallel to the plane formed by the rotation of the handle; a friction pad or a wave or sawtooth pattern for increasing friction is arranged on the stop plane; and the travel switch is installed at 90 degrees to the stop plane.

2. The method for manufacturing a butterfly valve device with a travel switch according to claim 1, characterized in that: A fixedly connected vertical mounting frame is also provided; the travel switch is mounted on the vertical mounting frame.

3. The method for manufacturing a butterfly valve device with a travel switch according to claim 1, characterized in that: The boss and the handle are integrally formed or fixed by welding.

4. The method for manufacturing a butterfly valve device with a travel switch according to claim 1, characterized in that: Anti-slip grooves are arranged on the gripping end of the handle.

5. The method for manufacturing a butterfly valve device with a travel switch according to claim 1, characterized in that: Stainless steel is used as the butterfly plate and valve body material.

6. A method for using a butterfly valve device with a travel switch, characterized in that: A butterfly valve device manufactured by the method of any one of claims 1 to 5, comprising the following steps: The rotating handle drives the butterfly plate connected to the valve stem to rotate, and the boss at one end of the handle gradually approaches the travel switch; the trigger device on the travel switch moves relative to the top pressure slope of the boss, and when the butterfly plate opening reaches the maximum, the trigger device runs along the top pressure slope to the stop plane of the boss away from the valve body; at this time, the trigger device of the travel switch is compressed and sends a signal.

7. The method for using a butterfly valve device with a travel switch according to claim 6, characterized in that: The stop plane is provided with a friction pad or a wave or sawtooth pattern for increasing friction; and the boss and the trigger device do not move relative to each other after the trigger device is located on the stop plane.

Images