Turnover plate air locking valve

Abstract

A communication opening is formed in the longitudinal rear wall of a lower valve body, an upper cavity of an upper valve body is communicated with a lower cavity of the lower valve body through the communication opening, and the upper end of a wind blocking curtain is fixedly connected to the upper side of the communication opening in the longitudinal rear wall of the lower valve body. The rear plate face of the air blocking curtain can make contact with the longitudinal rear wall face of the lower valve body in the negative pressure state. The two ends of the elastic piece are connected to the lower end of the air blocking curtain and the longitudinal front wall of the lower valve body respectively, and the elastic piece is in a stretched state under the condition that the rear plate face of the air blocking curtain makes contact with the longitudinal rear wall face of the lower valve body. An elastic piece is arranged between the lower end of the air curtain and the longitudinal front wall of the lower valve body, and the air curtain is pulled outwards through the action force recovered after the elastic piece is stretched, so that opening of the air curtain is assisted.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kiln dust collection, in particular to a flap air lock valve. Background Art

[0002] In cement production, a flap valve or a star-shaped discharger is usually arranged at the dust collector at the end of the rotary kiln. For example, the Chinese patent document "wind-locking unloading device, publication number CN220033348U" includes a square chute and a wind curtain, the upper end of which is connected to the inner wall of the fixed installation side, and the top surface of the lower end of the wind curtain can be in close contact with the stepped surface through negative pressure. Generally, the flap valve is closed by negative pressure adsorption and is opened to discharge the material from the upper side when there is no negative pressure. Since the negative pressure of the kiln tail system is relatively large, the wind curtain has strong adsorption, and it may be difficult to open the wind curtain if the material is small and insufficient in weight. Utility Model Content

[0003] The purpose of the utility model is to provide a flap air lock valve to solve the above problems, which utilizes the restoring force of the elastic member to assist in opening the wind screen.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] A flap-lock wind valve comprises a valve body and a wind screen, the valve body comprises an upper valve body and a lower valve body, the upper end of the upper valve body is arranged with an inlet and the lower end of the lower valve body is arranged with an outlet, the longitudinal rear wall of the lower valve body is provided with a connecting port, the upper cavity of the upper valve body and the lower cavity of the lower valve body are connected through the connecting port, the upper end of the wind screen is fixedly connected to the upper side position of the connecting port of the longitudinal rear wall of the lower valve body, and the rear plate surface of the wind screen can contact the longitudinal rear wall surface of the lower valve body under negative pressure; it also comprises an elastic member, the two ends of the elastic member are respectively connected to the lower end of the wind screen and the longitudinal front wall of the lower valve body, and the elastic member is in a stretched state when the rear plate surface of the wind screen contacts the longitudinal rear wall surface of the lower valve body.

[0006] The elastic member is a spring, and a hanging ring may be welded or bonded on the lower end of the windshield curtain near the end and the longitudinal front wall of the lower valve body to hang the two ends of the spring respectively.

[0007] The lower end wall surface of the upper valve body is inclined downward from the longitudinal rear wall to the longitudinal front wall.

[0008] As mentioned above, an elastic member is arranged between the lower end of the windshield curtain and the longitudinal front wall of the lower valve body, and the windshield curtain is pulled outward by the recovery force of the elastic member after being stretched, thereby assisting in opening the windshield curtain.

[0009] Based on the above scheme, in an improved scheme, the longitudinal rear wall surface of the lower valve body is larger than the connecting port, the connecting port is arranged in the middle area of ​​the longitudinal rear wall surface of the lower valve body, and the peripheral area of ​​the longitudinal rear wall surface of the lower valve body forms an adsorption section. The adsorption section around the connecting port is in a circular shape, and the windshield is abutted against the adsorption section around the periphery to disperse the negative pressure adsorption force.

[0010] Based on the above solution, in an improved solution, the communication port is extended upward from the lower edge of the upper cavity, and the width of the communication port is the same as the longitudinal front end of the upper cavity. In this way, there is no stop angle, which is conducive to the smooth rolling and discharge of materials.

[0011] Based on the above scheme, in an improved scheme, the air lock valve further includes an elastic rod, the elastic rod is connected to the longitudinal front wall of the lower valve body, the rear end of the elastic rod extends into the lower cavity, the rear end of the elastic member is connected to the lower end of the wind curtain, and the front end of the elastic member is connected to the rear end of the elastic rod; wherein the elastic rod is threadedly connected to the longitudinal front wall of the lower valve body, the front end of the elastic rod is configured and connected with an adjusting nut I, and the extension length of the elastic rod into the lower cavity can be adjusted by tightening or loosening the adjusting nut I. In this way, the extension length of the elastic rod can be adjusted, thereby adjusting the elastic force of the elastic member. In a further improved scheme, the air lock valve further includes a limiting rod, the limiting rod is arranged at an upper position of the elastic rod along the longitudinal extension, the limiting rod is connected to the longitudinal front wall of the lower valve body, the rear end of the limiting rod extends into the lower cavity, and the wind curtain can resist the rear end of the limiting rod when it is opened at a certain angle; in this way, the opening angle of the wind curtain can be limited to prevent it from being opened too much, so that the negative pressure action time required for the wind curtain to be completely closed is longer. In a further improved scheme, the limit rod is threadedly connected to the longitudinal front wall of the lower valve body, and the front end of the limit rod is connected to an adjusting nut II. The extension length of the limit rod into the lower cavity can be adjusted by tightening or loosening the adjusting nut II; according to the negative pressure and the size of the connecting port, the extension length of the limit rod is adjusted to adjust the size of the outward opening of the wind screen.

[0012] Based on the above scheme, in an improved scheme, a vertical inlet is arranged at the upper end of the upper valve body, and an inlet flange is configured thereon; the upper end wall of the lower valve body is inclined downward from its longitudinal rear wall to the longitudinal front wall, and a vertical outlet is arranged at the lower end of the lower valve body, and an outlet flange is configured thereon. The material falls from the vertically arranged inlet into the oblique waist channel, and then falls through the connecting port and is output from the vertically arranged outlet, which is conducive to the smooth discharge of the material.

[0013] Based on the above solution, in an improved solution, an inspection port is arranged on the upper end wall of the lower valve body, and is equipped with an inspection flange, and a cover plate is connected to the inspection flange. In this way, it is convenient to disassemble and inspect the components such as the inner wall windshield.

[0014] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0015] The utility model discloses a flap-type air lock valve, in which an elastic member is arranged between the lower end of the wind screen and the longitudinal front wall of the lower valve body, and the wind screen is pulled outward by utilizing the recovery force (much smaller than the negative pressure force) of the elastic member after being stretched, so as to assist in opening the wind screen. The adsorption section on the outer periphery of the connecting port is in a U-shape, and the wind screen abuts against the adsorption section on all sides to disperse the negative pressure adsorption force. The extension length of the elastic rod can be adjusted, thereby adjusting the elastic force of the elastic member. According to the negative pressure and the size of the connecting port, the extension length of the limit rod is adjusted to adjust the size of the wind screen opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the valve body structure of the utility model.

[0017] Figure 2 yes Figure 1 Another perspective structural diagram of .

[0018] Figure 3 yes Figure 1 Another perspective structural diagram of .

[0019] Figure 4 yes Figure 1 Schematic diagram of the main view.

[0020] Figure 5 yes Figure 1 Schematic diagram of the left side.

[0021] Figure 6 yes Figure 1 Rear view schematic diagram of .

[0022] Figure 7 The utility model is a schematic diagram of the principle of the elastic member pulling the windshield curtain outward.

[0023] In the accompanying drawings, 1 is an upper valve body, and 2 is a lower valve body. DETAILED DESCRIPTION

[0024] Example 1

[0025] See also Figure 1-Figure 7 , a flap-lock air valve of the present embodiment 1 includes a valve body and a wind screen 26, the valve body includes an upper valve body 1 and a lower valve body 2, the upper end of the upper valve body 1 is arranged with an inlet and the lower end of the lower valve body 2 is arranged with an outlet, a connecting port is opened in the longitudinal rear wall of the lower valve body 2, the upper cavity of the upper valve body 1 and the lower cavity of the lower valve body 2 are connected through the connecting port, the upper end of the wind screen 26 is fixedly connected to the upper side position of the connecting port of the longitudinal rear wall of the lower valve body 2, and the rear plate surface of the wind screen 26 can contact with the longitudinal rear wall surface of the lower valve body 2 under a negative pressure state; it also includes an elastic member, the two ends of the elastic member are respectively connected to the lower end of the wind screen 26 and the longitudinal front wall of the lower valve body 2, and the elastic member is in a stretched state when the rear plate surface of the wind screen contacts with the longitudinal rear wall surface of the lower valve body.

[0026] The lower end wall of the upper valve body is inclined downward from its longitudinal rear wall to the longitudinal front wall to form an inclined waist channel. When the windshield is closed by negative pressure, the material accumulates on the inclined waist channel, and then the material exerts a greater force on the windshield, making it easy to roll down. The outlet of the lower cavity can be a vertical drop channel at the windshield, or an inclined material sliding channel, as shown in the figure. This application takes the vertical drop channel of the material at the windshield as an example for explanation.

[0027] The windshield plate surface is larger than or equal to the connecting hole, and can be fixed by bolt connection or snap connection. As shown in the figure, a row of hanging holes 22 are arranged on the upper side of the connecting hole of the longitudinal rear wall of the lower valve body 2, and hanging bolts 221 are used to bolt to the hanging holes 22 to fix the windshield.

[0028] The elastic member can be an elastic sheet or a spring 27, etc., which is an existing technology. As shown in the figure, the present application takes the spring as an example. In order to connect and fix the spring 27, a hanging ring can be welded or bonded on the lower end of the windshield curtain near the end and the longitudinal front wall of the lower valve body to hang the hooks at both ends of the spring respectively.

[0029] The upper valve body and the lower valve body are welded with 10mm thick aluminum alloy or Q235 steel plates. Some dimensions (unit: mm) are shown in the figure. The diameters of the bolt connection openings are 15mm and 20mm, etc.

[0030] As mentioned above, an elastic member is arranged between the lower end of the wind shield curtain and the longitudinal front wall of the lower valve body. The elastic force of the spring (elastic member) is relatively small, and the wind shield curtain is pulled open a small distance. For example, the connecting port is 320mm*400mm and the lower end of the wind shield curtain is pulled open by 20mm, 30mm or 50mm. Under the action of negative pressure far greater than the elastic force of the spring, the wind shield curtain is quickly adsorbed and closed to close the valve (the negative pressure action time required for the wind shield curtain to be completely closed is relatively short, and the impact on the system negative pressure is very small). The spring is stretched, and then, the elastic member is stretched and the recovery force is used to pull the wind shield curtain outward, thereby assisting in pulling the wind shield curtain outward, relatively reducing the required material gravity, and facilitating opening the wind shield curtain.

[0031] Example 2

[0032] Based on the aforementioned embodiment 1, the present embodiment 2 is provided with an elastic structure for adjusting the elastic member, which is specifically as follows. For other matters not fully described, please refer to the aforementioned embodiment 1.

[0033] See also Figure 1-Figure 7The air lock valve of the second embodiment also includes an elastic rod 241, which is threaded or welded to the longitudinal front wall of the lower valve body 2, the rear end of the elastic rod 241 extends into the lower cavity, the rear end of the elastic member is connected to the lower end of the wind curtain 26, and the front end of the elastic member is connected to the rear end of the elastic rod 241. For better distribution, the lower valve body connection spring position is arranged in its horizontal middle. In this way, the spring connection point is arranged on the elastic rod, and a hanging hole is opened and assembled in the radial direction of the elastic rod. Compared with arranging the hanging ear in the lower cavity, it can be better disassembled, connected and maintained.

[0034] In an improved example, the elastic rod 241 is threadedly connected to the elastic threaded hole 24 of the longitudinal front wall of the lower valve body 2, and the front end of the elastic rod 241 is connected with an adjusting nut I, and the extension length of the elastic rod 241 into the lower cavity can be adjusted by tightening or loosening the adjusting nut I. In this way, the extension length of the elastic rod can be adjusted, thereby adjusting the elastic force of the elastic member.

[0035] Example 3

[0036] Based on the aforementioned embodiment 1 or 2, the present embodiment 3 has a structure for adjusting the opening size of the windshield curtain, which is specifically as follows. For other matters not fully described, please refer to the aforementioned embodiments 1-2.

[0037] See also Figure 1-Figure 7 The air lock valve of this embodiment 3 also includes a limit rod 251, which is arranged above the elastic rod 241 along the longitudinal extension. The limit rod 251 is connected to the longitudinal front wall of the lower valve body 2, and the rear end of the limit rod 251 extends into the lower cavity, and the wind curtain 2 can contact the rear end of the limit rod when it is opened at a certain angle. Among them, the number of limit rods is more than 1; in order to better balance the effect, the number of limit rods is more than 2, as shown in the figure, 2 limit rods are used as an example, and the 2 limit rods are distributed horizontally. In this way, the limit rod extends into the lower cavity for a certain length, which can limit the angle or distance of the wind curtain to be opened, and prevent it from being opened too much, so that the negative pressure action time required for the wind curtain to be completely closed is longer.

[0038] In an improved example, the limit rod 251 is threadedly connected to the longitudinal front wall of the lower valve body 2, and the front end of the limit rod 251 is connected with an adjusting nut II, and the extension length of the limit rod 251 into the lower cavity can be adjusted by tightening or loosening the adjusting nut II. As shown in the figure, a limit nut is welded at the limit through hole of the longitudinal front wall of the lower valve body 2, the limit rod 251 is threadedly connected to the limit nut, and an adjusting nut II is arranged at the front end of the limit rod to adjust the fixed position. According to the negative pressure and the size of the connecting port, the adjusting nut II adjusts the fixed position, and then adjusts the extension length of the limit rod to adjust the size of the windshield curtain opening.

[0039] Example 4

[0040] Based on the aforementioned embodiments 1, 2, and 3, the present embodiment 4 has a dispersed negative pressure adsorption structure, which is specifically as follows. For other matters not fully described, please refer to the aforementioned embodiments 1-3.

[0041] See also Figure 1-Figure 7 The longitudinal rear wall of the lower valve body 2 of the air lock valve is larger than the connecting port, the connecting port is arranged in the middle area of ​​the longitudinal rear wall of the lower valve body 2, and the peripheral area of ​​the longitudinal rear wall of the lower valve body 2 forms an adsorption section 21. As mentioned above, the adsorption section around the connecting port is in a circular shape, and the windshield is abutted against the adsorption section around to disperse the negative pressure adsorption force.

[0042] Example 5

[0043] Based on the aforementioned embodiments 1 or 2, 3, 4, this embodiment 5 defines a connecting port structure, which is specifically as follows. For other unexplained details, please refer to the aforementioned embodiments 1-4.

[0044] See also Figure 1-Figure 7 The connecting port of the air lock valve extends upward from the lower edge of the upper cavity, and the width of the connecting port is the same as the longitudinal front end of the upper cavity. In this way, there is no stall angle, which is conducive to the smooth rolling and discharge of materials.

[0045] Example 6

[0046] Based on the aforementioned embodiments 1 or 2, 3, 4, 5, this embodiment 6 defines an oblique waist material flow channel structure, which is as follows. For other unexplained details, please refer to the aforementioned embodiments 1-5.

[0047] See also Figure 1-Figure 7 The upper end of the upper valve body of the air lock valve is provided with a vertical inlet and an inlet flange; the upper end wall of the lower valve body 2 is inclined downward from its longitudinal rear wall to the longitudinal front wall, and the lower end of the lower valve body 2 is provided with a vertical outlet and an outlet flange. In this way, the material falls from the vertically arranged inlet into the oblique waist channel, and then falls through the connecting port and is output from the vertically arranged outlet, which is conducive to the smooth discharge of the material.

[0048] Example 7

[0049] Based on the aforementioned embodiments 1 or 2, 3, 4, 5, 6, this embodiment 7 defines the maintenance structure, which is as follows. For other unexplained details, please refer to the aforementioned embodiments 1-6.

[0050] See also Figure 1-Figure 7 The upper wall surface of the lower valve body 2 of the air lock valve is provided with an inspection port 23, and is provided with an inspection flange, to which a cover plate is connected. As shown in the figure, the upper wall surface of the lower valve body is arranged obliquely, and the inspection port is opened obliquely, so that the inspection field of view is wide. In this way, it is convenient to disassemble and inspect the components such as the inner wall windshield.

[0051] It should be pointed out that the examples of the above-mentioned embodiments can be preferably combined with one or more of them according to actual needs, and multiple examples use a set of drawings to illustrate the combined technical features, which will not be described one by one here.

[0052] It should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0053] The above description is a detailed description and illustration of the preferred feasible embodiments of the utility model, but these descriptions are not intended to limit the scope of protection required by the utility model. All equivalent changes or modified changes completed under the technical teachings suggested by the utility model should fall within the scope of patent protection covered by the utility model.

Claims

1. A flap air lock valve, comprising a valve body and an air curtain, the valve body comprising an upper valve body and a lower valve body, the upper end of the upper valve body is arranged with an inlet and the lower end of the lower valve body is arranged with an outlet, the longitudinal rear wall of the lower valve body is provided with a connecting port, the upper cavity of the upper valve body and the lower cavity of the lower valve body are connected through the connecting port, the upper end of the air curtain is fixedly connected to the upper side position of the connecting port of the longitudinal rear wall of the lower valve body, and the rear plate surface of the air curtain can contact the longitudinal rear wall surface of the lower valve body under negative pressure; characterized in that: It also includes an elastic member, the two ends of which are respectively connected to the lower end of the windshield and the longitudinal front wall of the lower valve body, and the elastic member is in a stretched state when the rear plate surface of the windshield contacts the longitudinal rear wall surface of the lower valve body.

2. The flap air lock valve according to claim 1, characterized in that: The longitudinal rear wall of the lower valve body is larger than the communication port, the communication port is arranged in the middle area of ​​the longitudinal rear wall of the lower valve body, and the peripheral area of ​​the longitudinal rear wall of the lower valve body forms an adsorption section.

3. The flap air lock valve according to claim 1, characterized in that: The communication port is extended upward from the lower edge of the upper cavity, and the width of the communication port is the same as the longitudinal front end of the upper cavity.

4. The flap air lock valve according to claim 1, characterized in that: It also includes an elastic rod, which is connected to the longitudinal front wall of the lower valve body, the rear end of the elastic rod extends into the lower cavity, the rear end of the elastic member is connected to the lower end of the wind screen, and the front end of the elastic member is connected to the rear end of the elastic rod; wherein, the elastic rod is threadedly connected to the longitudinal front wall of the lower valve body, the front end of the elastic rod is configured with an adjusting nut I, and the extension length of the elastic rod into the lower cavity can be adjusted by tightening or loosening the adjusting nut I; wherein the elastic member is a spring.

5. The flap air lock valve according to claim 4, characterized in that: It also includes a limit rod, which is extended longitudinally and arranged above the elastic rod. The limit rod is connected to the longitudinal front wall of the lower valve body, and the rear end of the limit rod extends into the lower cavity, and the wind shield curtain can resist the rear end of the limit rod when it is opened outward at a certain angle; wherein, the limit rod is threadedly connected to the longitudinal front wall of the lower valve body, and the front end of the limit rod is configured to be connected with an adjusting nut II, and the extension length of the limit rod into the lower cavity can be adjusted by tightening or loosening the adjusting nut II.

6. The flap air lock valve according to claim 1, characterized in that: The lower end wall surface of the upper valve body is inclined downward from its longitudinal rear wall to the longitudinal front wall, and a vertical inlet is arranged at the upper end of the upper valve body, and an inlet flange is configured thereon; the upper end wall surface of the lower valve body is inclined downward from its longitudinal rear wall to the longitudinal front wall, and a vertical outlet is arranged at the lower end of the lower valve body, and an outlet flange is configured thereon.

7. The flap air lock valve according to claim 1, characterized in that: An inspection port is arranged on the upper end wall of the lower valve body, and is provided with an inspection flange, to which a cover plate is connected.

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