Pneumatic slide plate gate and air cylinder thereof

Abstract

The utility model discloses an air cylinder for a pneumatic slide plate gate. The air cylinder comprises an air cylinder body, a feedback rod, a magnetic assembly and a magnetic stroke detection device, the feedback rod is arranged on the first surface of the air cylinder body and can move in the first direction, and one end of the feedback rod is used for being connected with a valve of the pneumatic insertion plate door. The magnetic assembly is fixedly connected to the other end of the feedback rod so as to move in the first direction along with the feedback rod; the magnetic stroke detection device is arranged on the first surface and used for detecting whether the magnetic assembly passes through the magnetic detection range of the magnetic assembly or not. The utility model further discloses a pneumatic slide plate gate with the air cylinder. According to the utility model, non-contact driving is adopted, no mechanical wear exists in the action process, the working state can be maintained, the signal acquisition is accurate, and the stability is good.

Description

Technical Field

[0001] This utility model relates to a pneumatic slide gate and its cylinder. Background Technology

[0002] In the process of thermal power generation, pneumatic slide gates are important auxiliary equipment for boilers. They are installed on the cold and hot air ducts of boilers in thermal power plants where they need to be shut off and isolated, such as the inlet air duct of coal mills, to block the hot air entering the coal mill.

[0003] Currently, the opening and closing signals of pneumatic slide gates in thermal power plants are mostly generated using mechanical limit switches. This involves connecting the gate valve to a feedback rod. During the opening and closing process, the valve moves the feedback rod, which then strikes a rotating crank arm, triggering the opening and closing signal. Specifically, the feedback rod moves back and forth, causing the rotating crank arm to repeatedly engage with two trigger holders, thus triggering the opening and closing signal. The biggest problem with this method is that with increased usage time and frequency of operation, coupled with the high speed and impact force of the pneumatic slide gate valve during opening and closing, the feedback rod's extremely high speed results in significant impact force against the rotating crank arm. Prolonged impact can easily deform the rotating crank arm, leading to incorrect signal triggering, or even complete failure to trigger the opening and closing signal. Furthermore, pneumatic slide gates in thermal power plants are typically installed in high-altitude, high-dust environments, causing significant difficulties for maintenance and repair after a malfunction. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, an embodiment of the present invention provides a pneumatic slide gate and its cylinder.

[0005] A cylinder for a pneumatic slide gate according to one aspect of an embodiment of the present invention includes: a cylinder body, a feedback rod, a magnetic component, and a magnetic stroke detection device; the feedback rod is disposed on a first surface of the cylinder body and is movable along a first direction, one end of the feedback rod being used to connect to the valve of the pneumatic slide gate; the magnetic component is fixedly connected to the other end of the feedback rod to follow the feedback rod in the first direction; the magnetic stroke detection device is disposed on the first surface to detect whether the magnetic component passes through its magnetic detection range.

[0006] In one example of the cylinder provided above, the magnetic assembly includes a fixed sleeve and a magnetic element, the fixed sleeve being sleeved on the other end of the feedback rod for fixed connection with the feedback rod, and the magnetic element being fixed on the fixed sleeve.

[0007] In one example of the cylinder provided above, the magnetic component includes a connecting rod and a magnet, one end of the connecting rod passing through the fixed sleeve and fixedly connected to the fixed sleeve, and the other end of the connecting rod being fixed together with the magnet.

[0008] In one example of the cylinder provided above, the magnetic stroke detection device includes a first magnetic proximity switch and a second magnetic proximity switch, the first magnetic proximity switch and the second magnetic proximity switch being spaced apart along the first direction.

[0009] In one example of the cylinder provided above, both the first magnetic proximity limit switch and the second magnetic proximity limit switch are provided with indicator lights, which are used to illuminate when the magnet passes through the corresponding magnetic proximity limit switch.

[0010] According to one aspect of an embodiment of the present invention, a pneumatic slide gate includes a valve and a cylinder for driving the valve to open or close, wherein the cylinder is the aforementioned cylinder.

[0011] Beneficial effects: This invention employs a non-contact drive, eliminating mechanical wear during operation, maintaining a stable working state, ensuring accurate signal acquisition, and providing excellent stability. Furthermore, once installed and positioned, no on-site adjustments or maintenance are required during the main equipment's operating cycle, resulting in a long service life. Moreover, it can adapt to harsh working environments, operating reliably even in dusty conditions, making it suitable for widespread adoption. Attached Figure Description

[0012] The above and other aspects, features, and advantages of embodiments of the present invention will become clearer from the following description taken in conjunction with the accompanying drawings, in which:

[0013] Figure 1 This is a schematic diagram of the structure of a cylinder for a pneumatic slide gate according to an embodiment of the present invention. Detailed Implementation

[0014] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in many different forms, and should not be construed as limited to the specific embodiments set forth herein. Rather, these embodiments are provided to explain the principles of the present invention and its practical application, thereby enabling others skilled in the art to understand the various embodiments of the present invention and various modifications suitable for particular intended applications.

[0015] As used herein, the term "comprising" and its variations are open terms meaning "including but not limited to". The terms "based on", "according to", etc., mean "at least partially based on" or "at least partially based on". The terms "embodiment", "an example", "one embodiment", and "an embodiment" mean "at least one embodiment". The terms "another embodiment", "another embodiment", "another example", "yet another example" mean "at least one other embodiment". The terms "first", "second", etc., may refer to different or the same objects. Other definitions, whether explicit or implicit, may be included below. Unless explicitly indicated by the context, the definition of a term remains consistent throughout the specification.

[0016] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related are omitted.

[0017] Figure 1 This is a schematic diagram of the structure of a cylinder for a pneumatic slide gate according to an embodiment of the present invention.

[0018] Reference Figure 1 According to an embodiment of the present invention, the cylinder for a pneumatic slide gate includes: a cylinder body 1, a feedback rod 2, a magnetic component 3, and a magnetic stroke detection device 4.

[0019] Specifically, the cylinder body 1 is typically used to drive the valve of a pneumatic slide gate to control the opening and closing of the valve. In this embodiment, the cylinder body 1 is generally rectangular, but the present invention is not limited thereto.

[0020] The feedback rod 2 is disposed on the first surface of the cylinder body 1 and is capable of moving along the first direction. In this embodiment, the first surface is the outer surface of the cylinder body 1, and the first direction is preferably parallel to the central axis of the cuboid, but the present invention is not limited thereto.

[0021] One end of the feedback rod 2 is used to connect to the valve (not shown) of the pneumatic slide gate (not shown), specifically, using the same connection method as in the prior art. That is to say, this utility model does not improve the connection between one end of the feedback rod 2 and the valve; any existing suitable connection method can be used.

[0022] The magnetic component 3 is fixedly connected to the other end of the feedback rod 2 to follow the movement of the feedback rod 2 in the first direction. In this embodiment, preferably, the magnetic component 3 includes: a fixing sleeve 31 and a magnetic element 32. The fixing sleeve 31 is sleeved on the other end of the feedback rod 2 to be fixedly connected to the feedback rod 2, while the magnetic element 32 is fixed on the fixing sleeve 31.

[0023] Furthermore, the magnetic component 32 includes a connecting rod 321 and a magnet 322. One end of the connecting rod 321 passes through the fixed sleeve 31 and is fixedly connected to the fixed sleeve 31, while the other end of the connecting rod 321 is fixed together with the magnet 322.

[0024] A magnetic travel detection device 4 is also disposed on the first surface to detect whether the magnetic component 3 passes through its magnetic detection range. In this embodiment, preferably, the magnetic travel detection device 4 includes a first magnetic proximity travel switch 41 and a second magnetic proximity travel switch 42, and the first magnetic proximity travel switch 41 and the second magnetic proximity travel switch 42 are spaced apart along the first direction.

[0025] In this case, when the magnet 322 moves along the first direction following the feedback rod 2, it will pass through the first magnetic proximity limit switch 41 or the second magnetic proximity limit switch 42, and thus be detected by the first magnetic proximity limit switch 41 or the second magnetic proximity limit switch 42, so as to realize the non-contact opening and closing detection of the pneumatic slide gate.

[0026] Specifically, when the pneumatic slide gate closes, the valve is closed. During the closing process, the valve drives the connected feedback rod 2 to move in a first direction, thereby driving the magnet 322 to move, for example, towards the first magnetic proximity switch 41 in the first direction. When the magnet 322 moves into the detection range of the first magnetic proximity switch 41, the first magnetic proximity switch 41 will issue a prompt to indicate that the pneumatic slide gate is closed. Conversely, when the pneumatic slide gate opens, the valve is opened. During the opening process, the valve drives the connected feedback rod 2 to move in the first direction, thereby driving the magnet 322 to move, for example, towards the second magnetic proximity switch 42 in the first direction. When the magnet 322 moves into the detection range of the second magnetic proximity switch 42, the second magnetic proximity switch 42 will issue a prompt to indicate that the pneumatic slide gate is open. In this way, non-contact opening or closing detection of the pneumatic slide gate is achieved.

[0027] Furthermore, both the first magnetic proximity limit switch 41 and the second magnetic proximity limit switch 42 are provided with indicator lights (e.g., LED lights), which are used to illuminate when the magnet 322 passes through the corresponding magnetic proximity forming switch.

[0028] According to another embodiment of the present invention, a method having... Figure 1 The pneumatic slide gate of the cylinder shown.

[0029] In summary, the embodiments of this utility model employ contactless drive, resulting in no mechanical wear during operation, a working state holding function, accurate signal acquisition, and good stability. Furthermore, once installed and positioned, no on-site adjustments or maintenance are required during the main equipment's operating cycle, leading to a long service life. Moreover, it can adapt to relatively harsh working environments, operating reliably even in dusty conditions, making it suitable for widespread application.

[0030] The optional embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present utility model are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present utility model, various simple modifications can be made to the technical solutions of the embodiments of the present utility model, and these simple modifications all fall within the protection scope of the embodiments of the present utility model.

Claims

1. A cylinder for a pneumatic slide gate, characterized in that, include: Cylinder body, feedback rod, magnetic assembly, and magnetic stroke detection device; The feedback rod is disposed on the first surface of the cylinder body and is capable of moving along the first direction. One end of the feedback rod is used to connect to the valve of the pneumatic slide gate. The magnetic component is fixedly connected to the other end of the feedback rod to follow the feedback rod in the first direction. The magnetic stroke detection device is disposed on the first surface to detect whether the magnetic component passes through its magnetic detection range.

2. The cylinder according to claim 1, characterized in that, The magnetic component includes a fixing sleeve and a magnetic element. The fixing sleeve is sleeved on the other end of the feedback rod to be fixedly connected to the feedback rod, and the magnetic element is fixed on the fixing sleeve.

3. The cylinder according to claim 2, characterized in that, The magnetic component includes a connecting rod and a magnet. One end of the connecting rod passes through the fixed sleeve and is fixedly connected to the fixed sleeve, while the other end of the connecting rod is fixed together with the magnet.

4. The cylinder according to claim 3, characterized in that, The magnetic travel detection device includes a first magnetic proximity travel switch and a second magnetic proximity travel switch, which are spaced apart along the first direction.

5. The cylinder according to claim 4, characterized in that, Both the first magnetic proximity limit switch and the second magnetic proximity limit switch are equipped with indicator lights, which are used to illuminate when the magnet passes through the corresponding magnetic proximity limit switch.

6. A pneumatic slide gate, characterized in that, It includes a valve and a cylinder for driving the valve to open or close, said cylinder being the cylinder according to any one of claims 1 to 5.

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