Atmosphere blowback pulse valve

Abstract

The utility model relates to the field of airflow control equipment of dust removers, in particular to an atmosphere blowback pulse valve which comprises a motor, a valve body and a transition sleeve, a transmission shaft is rotatably arranged in the valve body, one end of the transmission shaft is coaxially connected with an output shaft of the motor and rotates synchronously, and the other end of the transmission shaft extends into the transition sleeve. The part, in the transition sleeve, of the transmission shaft is sleeved with a rotating arm, the rotating arm synchronously rotates along with the transmission shaft, and a stop block used for stopping the rotating arm from rotating is fixedly connected into the transition sleeve; the part, in the valve body, of the transmission shaft is fixedly connected with the valve plate, the valve plate and the inner surface of the valve body form a sealing structure when rotating to a closing position, and the valve body forms an airflow channel when rotating to an opening position. The motor is used for controlling the valve plate to rotate so as to adjust airflow on-off of the valve body, the reaction speed is high, and the pulse effect is good; the requirement on an air source is low, and the device can be used for a blowback system without compressed air; the weather tolerance is high, and the application range is wide; a sealing ring is arranged between the transmission shaft and the valve body, so that the sealing effect is ensured.

Description

Technical Field

[0001] The utility model relates to the field of dust collector air flow control equipment, in particular to a large air reverse blow pulse valve. Background Technique

[0002] As an important component in the dust cleaning of dust collectors, the operation effect of the pulse valve directly affects the dust cleaning ability of the dust collector. Different from the diaphragm valve with compressed air as the air source, the large air reverse blow pulse valve is applied to the reverse blow system equipped with a high-pressure centrifugal fan, and its air source comes from ambient air. It still needs to ensure a stable operating state in rainy and snowy weather. This requires that the large air reverse blow pulse valve consider the erosion of dust and moisture during design. At the same time, as a pulse valve, its essence is to provide pulsed air flow for dust cleaning, and factors such as sealing and reaction speed need to be considered. The large air reverse blow pulse valve needs to withstand the test of long-term operation. At the same time, when the dust collector is applied in different working conditions, the dust cleaning requirements are different, the opening frequency of the pulse valve is different, and there is an extreme situation of continuous operation for a long time. This puts higher requirements on factors such as material strength and design. Content of the Utility Model

[0003] The utility model aims to solve the above problems and provides a large air reverse blow pulse valve, and the technical solution adopted is as follows:

[0004] A large air reverse blow pulse valve includes a motor, a valve body and a transition sleeve fixedly connected in sequence. A transmission shaft is rotatably arranged in the valve body. One end of the transmission shaft is coaxially connected with the output shaft of the motor and rotates synchronously, and the other end extends into the transition sleeve. A rotating arm is sleeved outside the part of the transmission shaft in the transition sleeve, and the rotating arm rotates synchronously with the transmission shaft. A stop block for blocking the rotation of the rotating arm is fixedly connected in the transition sleeve; a valve plate is fixedly connected to the part of the transmission shaft in the valve body. When the valve plate rotates to the closed position, a sealing structure is formed with the inner surface of the valve body, and when the valve plate rotates to the open position, an air flow channel is formed in the valve body.

[0005] On the basis of the above solution, the valve plate is circular.

[0006] Preferably, a sealing ring is arranged between the transmission shaft and the valve body.

[0007] On the basis of the above solution, the number of the sealing rings is 2, and they are symmetrically arranged about the center of the valve plate. An oil-free seal sleeve and a bearing are sequentially arranged on one side of the sealing ring close to the motor and / or the transition sleeve.

[0008] Preferably, the number of the stop blocks is 2, the rotating arm rotates between the 2 stop blocks, and the rotation range of the rotating arm is 90°.

[0009] Preferably, one side of the stop block facing the rotating arm is made of an elastic material.

[0010] Preferably, one end of the transition sleeve away from the valve body is fixedly connected to an end plate made of a transparent material.

[0011] Preferably, the transmission shaft can rotate in the clockwise and counterclockwise directions.

[0012] The beneficial effects of the present utility model are as follows: The motor controls the rotation of the valve plate to adjust the on-off of the air flow in the valve body, with a fast reaction speed and a good pulse effect; it has low requirements for the air source and can be used in a backwashing system without compressed air; it has strong tolerance to the climate and a wide application range; the pulse duration can be controlled electronically, and the electronic control part can be integrated into the control system of the dust collector without the need to configure a separate pulse controller, with a simple structure and low cost; a sealing ring is provided between the transmission shaft and the valve body to ensure the sealing effect. Description of the Drawings

[0013] Figure 1 : Structural sectional view of the present utility model;

[0014] Figure 2 : External shape view of the structure of the present utility model;

[0015] Figure 3 : Side view of the present utility model. Detailed Embodiment

[0016] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0017] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0018] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0019] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0020] As Figures 1 to 3 shown, an atmospheric back-blowing pulse valve includes a motor 11, a valve body 23 and a transition sleeve 41 which are fixedly connected in sequence. The motor 11 is installed on a motor connection seat 13. A transmission shaft 21 is rotatably arranged in the valve body 23. One end of the transmission shaft 21 is coaxially connected and rotates synchronously with the output shaft of the motor 11 through a coupling 12, and the other end extends into the transition sleeve 41. A rotating arm 25 is sleeved outside a part of the transmission shaft 21 in the transition sleeve 41. The rotating arm 25 rotates synchronously with the transmission shaft 21. A stop block 42 for blocking the rotation of the rotating arm 25 is fixedly connected in the transition sleeve 41. A valve plate 22 is fixedly connected to a part of the transmission shaft 21 inside the valve body 23. When the valve plate 22 rotates to the closed position, a sealing structure is formed with the inner surface of the valve body 23. When the valve plate 22 rotates to the open position, an air flow channel is formed in the valve body 23, so as to control the on-off of the air flow in the pulse valve by the rapid rotation of the valve plate 22 and simulate pulse air flow. The transmission shaft 21 can rotate in the clockwise direction and the counterclockwise direction. Preferably, the valve plate 22 is circular, and the shape of the inner surface of the valve body 23 is the same as that of the valve plate 22.

[0021] The number of the stoppers 42 is two. The swing arm 25 rotates between the two stoppers 42, and the rotation range of the swing arm 25 is 90°. When the swing arm 25 abuts against one of the stoppers 42, the valve plate 22 is in the closed position. When the swing arm 25 abuts against the other stopper 42, the valve plate 22 rotates 90° with the transmission shaft 21 and is in the open position. Preferably, one side of the stopper 42 facing the swing arm 25 is made of an elastic material such as rubber, so as to reduce the impact generated between the stopper 42 and the swing arm 25 and extend the service life of the components and the pulse valve. One end of the transition sleeve 41 far away from the valve body 23 is fixedly connected to an end plate 43, and the end plate 43 is made of a transparent material such as acrylic. Through the end plate 43, the action position of the valve plate 22 can be visually observed in real time and it is convenient for maintenance.

[0022] A sealing ring 31 is arranged between the transmission shaft 21 and the valve body 23, and the sealing ring 31 is arranged close to the inner surface of the valve body 23 for sealing, so as to reduce the influence of the atmospheric environment and dust on the components inside the pulse valve and extend the service life of the pulse valve. The number of the sealing rings 31 is two and they are symmetrically arranged about the center of the valve plate 22. An oil-free seal sleeve 32 and a bearing 33 are sequentially arranged on one side of the sealing ring 31 close to the motor 11 and / or the transition sleeve 41 for extending the service life of the components.

[0023] The present invention has been described by way of example above, but the present invention is not limited to the above specific embodiments. Any modification or variation based on the present invention falls within the scope of protection required by the present invention.

Claims

1. An atmospheric back-blowing pulse valve, characterized in that, It includes a motor (11), a valve body (23) and a transition sleeve (41) fixedly connected in sequence. A transmission shaft (21) is rotatably arranged in the valve body (23). One end of the transmission shaft (21) is coaxially connected with the output shaft of the motor (11) and rotates synchronously, and the other end extends into the transition sleeve (41). A rotating arm (25) is sleeved outside a part of the transmission shaft (21) in the transition sleeve (41). The rotating arm (25) rotates synchronously with the transmission shaft (21). A stop block (42) is fixedly connected in the transition sleeve (41) to block the rotation of the rotating arm (25). A valve plate (22) is fixedly connected to a part of the transmission shaft (21) inside the valve body (23). When the valve plate (22) rotates to the closed position, a sealing structure is formed with the inner surface of the valve body (23). When the valve plate (22) rotates to the open position, an air flow channel is formed in the valve body (23).

2. The atmospheric back-blowing pulse valve according to claim 1, characterized in that, The valve plate (22) is circular.

3. The air pulse valve according to claim 1, characterized in that, A sealing ring (31) is arranged between the transmission shaft (21) and the valve body (23).

4. The air reverse blow pulse valve according to claim 3, characterized in that, The number of the sealing rings (31) is 2, and they are symmetrically arranged about the center of the valve plate (22). An oil-free seal sleeve (32) and a bearing (33) are sequentially arranged on one side of the sealing ring (31) close to the motor (11) and / or the transition sleeve (41).

5. The air reverse blow pulse valve according to claim 1, wherein, The number of the stop blocks (42) is 2. The rotating arm (25) rotates between the 2 stop blocks (42), and the rotation range of the rotating arm (25) is 90°.

6. The air reverse blow pulse valve according to claim 1, characterized in that, One side of the stop block (42) facing the rotating arm (25) is made of an elastic material.

7. The atmospheric back-blowing pulse valve according to claim 1, characterized in that, One end of the transition sleeve (41) far from the valve body (23) is fixedly connected with an end plate (43), and the end plate (43) is made of a transparent material.

8. An atmospheric back-blowing pulse valve according to claim 1, characterized in that, The transmission shaft (21) can rotate in the clockwise direction and the counterclockwise direction.

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