Pneumatic conveying blanking valve

Abstract

The utility model discloses a pneumatic conveying blanking valve, which belongs to the technical field of pneumatic conveying equipment, and comprises a valve body, a discharge port flange is arranged at the bottom of the valve body, the valve body is connected with a bin pump through the discharge port flange, a blowing assisting port is arranged at the left end of the outer wall of the valve body, and the blowing assisting port is communicated with the discharge port flange. A rotating handle is rotationally connected to the left end of the interior of the valve body, a main rotating shaft and an auxiliary rotating shaft are installed at the left end and the right end of the outer wall of the rotating handle correspondingly, a valve deck is fixedly connected to the top of the valve body, the main rotating shaft penetrates through the valve deck to the interior of the valve body, and packing is installed at the position, close to the main rotating shaft, in the valve deck. The fixing frame can be welded to the periphery of the valve plate, and the movable shovel is connected to the fixing frame through the spring, so that sticky dust on a valve plate line can be shoveled away when the valve plate operates every time, the valve plate is prevented from scraping dust, the service life of the valve plate is prolonged, and meanwhile the service life of the valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic conveying equipment technical field more specifically, relate to a kind of pneumatic conveying discharge valve. BACKGROUND

[0002] In the field of positive pressure pneumatic conveying, the application of disc discharge valve is very wide. When the loading of bin pump is finished, close the disc discharge valve, exhaust valve and other valves, open the discharge valve and air inlet valve, and the conveying can be started. After the conveying is finished, close the air inlet valve and discharge valve, open the disc discharge valve and exhaust valve again to start the discharging.

[0003] Common valves used in the field of pneumatic conveying and contacting with materials include disc discharge valve and double flashboard valve. The service life of existing disc discharge valve is about half a year to two years according to different materials. The common end-of-life mode is that the material sticks to the valve cover, causing difficulty in opening and closing the valve plate, so the valve needs to be repaired. If the material has stickiness, the existing double flashboard valve is prone to blockage at the valve plate extension. The service life of materials with self-lubricating properties is two years, while the service life of sticky materials is one month.

[0004] When the bin pump is conveying, if pipe blockage occurs, the pressure in the bin pump will reach 0.8 MPa, which is relatively large. The compressed air and materials in the tank will be blown back into the valve, so a material sliding slope is arranged in the valve to prevent the valve from being stuck by sliding materials. When conveying sticky and hard materials, the materials will stick to the valve cover. The traditional method is to directly scrape the materials off by hard scraping of the valve plate. However, this method can cause wear of the valve plate and valve cover, and further cause difficulty in opening the valve.

[0005] Therefore, a pneumatic conveying discharge valve is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] 1. Technical problem to be solved

[0007] In view of the problems existing in the prior art, the purpose of the utility model is to provide a pneumatic conveying discharge valve, which can realize welding of a fixed frame around the valve plate, connection of a movable shovel on the fixed frame by a spring, and scraping of sticky dust on the route of the valve plate during each operation of the valve plate, thereby avoiding the use of valve plate scraping, prolonging the service life of the valve plate, and prolonging the service life of the valve.

[0008] 2. Technical scheme

[0009] To solve the above problems, the utility model adopts the following technical scheme.

[0010] The utility model provides a kind of pneumatic conveying unloading valve, including valve body, the bottom of the valve body is equipped with discharge port flange, the valve body is connected by discharge port flange and bin pump, the outer wall left end of the valve body is equipped with the blowhole, the inside left end of the valve body is rotatably connected with handle, the outer wall left and right ends of the handle are equipped with main shaft and auxiliary shaft respectively, the top of the valve body is fixedly connected with valve cover, the main shaft penetrates valve cover to the inside of the valve body, the inside of the valve cover is equipped with packing near main shaft.

[0011] Further, the outer wall of the main shaft is equipped with first spring, the outer wall left and right ends of the first spring are equipped with thrust ball bearing on upper and lower sides, the top of the valve cover is fixedly equipped with feed inlet, the top wall of the feed inlet is equipped with air cylinder.

[0012] Further, the outer wall left and right ends of the auxiliary shaft are equipped with angular bearing, the outer wall of the angular bearing is equipped with sealing pad.

[0013] Further, the top end of the auxiliary shaft is fixedly connected with valve plate, the top of the valve plate is fixedly connected with wear plate.

[0014] Further, the outer wall left and right ends of the valve plate are fixedly connected with support frame, the top of the support frame is fixedly connected with second spring, the tail end of the second spring is fixedly connected with movable shovel.

[0015] Further, the adjacent side of the thrust ball bearing and packing is equipped with oil retaining ring.

[0016] 3. Beneficial effects

[0017] Compared with prior art, the utility model has the advantages that:

[0018] (1) the fixed frame is welded around the valve plate in the scheme, the movable shovel is connected on the fixed frame through the spring, so that the sticky dust on the route of the valve plate can be removed every time the valve plate operates, thereby avoiding using the valve plate to scrape dust, prolonging the service life of the valve plate and realizing the service life of the valve.

[0019] (2) the structure of the scheme is simple, the movable shovel is used to replace the valve plate to scrape the material, which improves the service life of the valve and prolongs the service life of the pneumatic conveying system, avoids frequent replacement and maintenance of the valve, and reduces the loss caused by shutdown production. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the side view structure schematic diagram of the utility model;

[0021] Figure 2 It is the structure schematic diagram of A in the enlarged structure of Figure 1

[0022] Figure 3 ​For Figure 1 Amplification structure schematic diagram in B in

[0023] Figure 4 For the overhead structure schematic diagram of the utility model.

[0024] Explanation of figure mark:

[0025] 1, valve body;2, discharge port flange;3, blow assisting port;4, handle;5, valve cover;6, packing;7, thrust ball bearing;8, first spring;9, main rotating shaft;10, air cylinder;11, auxiliary rotating shaft;12, angular bearing;13, sealing gasket;14, valve plate;15, wear plate;16, support frame;17, second spring;18, movable shovel;19, feed inlet;20, oil retaining ring. Specific implementation

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model;Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments;Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like is the orientation or position relationship 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 indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeving / connection", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, can also be indirectly connected through an intermediate medium;Can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] Embodiment:

[0030] Please refer to Figure 1 - Figure 4A pneumatic conveying and feeding valve includes a valve body 1, with a discharge port flange 2 installed at the bottom of the valve body 1. The valve body 1 is connected to a silo pump via the discharge port flange 2. An auxiliary blowing port 3 is opened at the left end of the outer wall of the valve body 1. A rotating handle 4 is rotatably connected to the left end of the interior of the valve body 1. A main rotating shaft 9 and a secondary rotating shaft 11 are respectively installed at the left and right ends of the outer wall of the rotating handle 4. A valve cover 5 is fixedly connected to the top of the valve body 1. The main rotating shaft 9 passes through the valve cover 5 to the interior of the valve body 1. Packing 6 is installed at the interior of the valve cover 5 near the main rotating shaft 9. A first spring 8 is installed on the outer wall of the main rotating shaft 9. Thrust ball bearings 7 are installed on the upper and lower sides of the left and right ends of the outer wall of the first spring 8. A feed inlet 19 is fixedly installed on the top of the valve cover 5. A cylinder 10 is installed on the top wall of the feed inlet 19. An angular bearing 12 is installed at the left and right ends of the outer wall of the secondary rotating shaft 11. A sealing gasket 13 is installed on the outer wall of the angular bearing 12.

[0031] This solution involves opening an auxiliary blowing port 3 on the left side of the valve body 1. Because the material is in a boiling state when the pneumatic conveying pump is pumping below, some material will return into the valve body 1. If it is not treated for a long time, the material will clump inside the valve body 1, thus affecting the service life of the valve. The auxiliary blowing port 3 makes it easier for operators to handle this. The auxiliary rotating shaft 11 can reduce the resistance when the valve is opened and closed.

[0032] Please see Figure 1 and Figure 3 A valve plate 14 is fixedly connected to the top of the secondary rotating shaft 11, and a wear-resistant plate 15 is fixedly connected to the top of the valve plate 14; a support frame 16 is fixedly connected to the left and right ends of the outer wall of the valve plate 14, a second spring 17 is fixedly connected to the top of the support frame 16, and a movable shovel 18 is fixedly connected to the end of the second spring 17; an oil baffle ring 20 is installed on the adjacent sides of the thrust ball bearing 7 and the packing 6.

[0033] This solution uses a wear-resistant plate 15 fixedly connected to the top wall of the valve plate 14. The wear-resistant plate 15 can rub against the valve cover 5 when the valve is opened and closed, thereby reducing friction. The second spring 17 can continuously push the movable shovel 18 to keep the movement trajectory of the valve plate 14 clean when the movable shovel 18 is worn. An oil baffle ring 20 is installed at the bottom of the thrust ball bearing 7 to separate the material from the bearing and prevent interference between the two.

[0034] Working principle: when the device is used, the valve body 1 is connected with the bin pump through the discharge flange 2, the handle 4 is connected with the main shaft 9 and the auxiliary shaft 11, the main shaft 9 is installed on the top of the valve cover 5 through the first spring 8 and the thrust ball bearing 7, the main shaft 9 is designed as a square, the torque during transmission is transmitted, the cylinder 10 is the driving device in the device, and driving force is provided, the right end top of the auxiliary shaft 11 is connected with the valve plate 14 through the angular bearing 12, the angular bearing 12 can be used to transmit axial force and radial force, the sealing gasket 13 is designed to prevent dust from entering the angular bearing 12, the outer wall of the valve plate 14 is connected with the movable shovel 18 through the support frame 16, the material adhered to the valve cover 5 can be scraped through the movable shovel 18, and the valve can be cleaned through the air source blowing the inside of the valve after the bin pump stamping assembly during the bin pump conveying, the service life of the valve and the pneumatic conveying system is prolonged, the production efficiency is improved, and the production cost is reduced through the above structure.

[0035] The above merely describes a preferred embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the improvement concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A pneumatic conveying dosing valve comprising a valve body (1), characterized in that: The bottom of the valve body (1) is provided with a discharge flange (2), the valve body (1) is connected with the warehouse pump through the discharge flange (2), the left end of the outer wall of the valve body (1) is provided with a blowhole (3), the left end of the inner wall of the valve body (1) is rotatably connected with a handle (4), the outer wall of the handle (4) is respectively provided with a main shaft (9) and a vice shaft (11) at the left and right ends, the top of the valve body (1) is fixedly connected with a valve cover (5), the main shaft (9) penetrates the valve cover (5) to the inside of the valve body (1), and the inside of the valve cover (5) is provided with a packing (6) near the main shaft (9).

2. A pneumatic conveying de-charging valve according to claim 1, characterized in that: The outer wall of the main shaft (9) is provided with a first spring (8), the outer wall of the first spring (8) is provided with a thrust ball bearing (7) on the upper side of the left and right ends, the top of the valve cover (5) is fixedly provided with a feed inlet (19), and the top wall of the feed inlet (19) is provided with a cylinder (10).

3. A pneumatic conveying de-charging valve according to claim 1, wherein: The outer wall of the vice shaft (11) is provided with an angular bearing (12) at the left and right ends, and the outer wall of the angular bearing (12) is provided with a sealing gasket (13).

4. A pneumatic conveying de-charging valve according to claim 1, wherein: The top of the valve plate (14) is fixedly connected with a wear plate (15).

5. A pneumatic conveying de-charging valve according to claim 4, wherein: The outer wall of the valve plate (14) is fixedly connected with a support frame (16) at the left and right ends, the top of the support frame (16) is fixedly connected with a second spring (17), and the tail end of the second spring (17) is fixedly connected with a movable shovel (18).

6. A pneumatic conveying de-charging valve according to claim 2, wherein: The adjacent sides of the thrust ball bearing (7) and the packing (6) are provided with an oil retaining ring (20).

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