RU129493U1 - PLANT FOR PNEUMATIC TRANSPORTATION OF BULK PRODUCTS - Google Patents

Abstract

1. Installation for pneumatic transportation of bulk products, containing a suction device, a suction pipe, a cyclone with a mesh installed inside to prevent product from entering the fan chamber, a centrifugal fan, a fan line with a valve installed in it, containing a rotary damper with an axis at the inlet of the fan chamber rotation perpendicular to the axis of the flow, with stops of the open and closed position, airlock, characterized in that the radial clearance between the fan blades and The fan stroke increases in involute in the direction of rotation of the fan, the metal blades of the airlock lock contain lining of elastic polymer material with the possibility of their adjustment in length, the intake device is a metal case in the form of a hollow cylinder with a handle and a hollow truncated conical part inside the cylinder, while inside the cylinder is a pipe mounted coaxially with the cylinder with the ability to move along the axis to adjust the gap between the truncated conical part and the pipe, rivodom rotary valve movable arm is pivotally mounted in the housing pipe, at the end of which is located sinker, with the possibility of displacement along plecha.2. Installation according to claim 1, in which the lining on the blades of the airlock is made of polyurethane.

Description

The utility model relates to pneumatic transportation of bulk products and can be used in agriculture for transportation, loading, unloading and ventilation of crops.

Known installations for pneumatic transportation of bulk products, for example, described in patents RU 2311332 "Pneumatic conveyor of bulk products" priority date 04/20/2004, RU 42224 "Pneumatic transport? bulk materials with an aerodynamic tray ”priority date 08/08/2004, US 5035543" Material transfer apparatus "priority date 07/10/1989. The closest to the claimed utility model in terms of technical nature and the achieved result, selected as a prototype, is a pneumatic conveying installation protected by the patent for utility model RU 62911 "Pneumatic conveying? Bulk materials", priority date 07.12.2006. This installation contains a suction device, a suction pipe, a cyclone with a mesh installed inside to prevent product from entering the fan chamber, a centrifugal fan, a fan line with a throttle valve installed in it, containing a rotary valve at the inlet of the fan chamber with a rotation axis perpendicular to the flow axis , with emphasis provisions "open" and "closed", airlock.

The throttle valve in the fan line, described in the prototype, is difficult to manufacture, in the known gate locks to prevent air intake from the cyclone, high precision manufacturing and assembly of the mating parts of the casing and the rotor rotor is required. Air leaks result in reduced plant performance. Based on the description of the prototype, we can assume that it lacks the ability to control the flow of the transported product, which in turn leads to an unstable load on the engine, and therefore its resource is reduced.

The task is to increase the productivity of the installation. This result is achieved by the fact that in the installation for pneumatic transportation of bulk products containing a suction device, a suction pipe, a cyclone with a mesh installed inside to prevent product from entering the fan chamber, a centrifugal fan, a fan line with a valve installed in it, containing a fan inlet a rotary damper chamber with an axis of rotation perpendicular to the axis of the flow, with stops of the open and closed position, a lock lock, according to a utility model,

- the radial clearance between the fan blades and the fan casing increases involute in the direction of rotation of the fan;

- metal blades of the lock gate with overlays made of elastic polymer material, for example polyurethane, with the possibility of their adjustment in length;

- the intake device is a metal body in the form of a hollow cylinder with a handle and a hollow truncated conical part inside the cylinder, while inside the body there is a pipe mounted coaxially to the body with the ability to move along the axis to adjust the gap between the truncated conical part and the pipe, the size of which allows you to adjust suction power of the product with a suction device;

- the rotary damper is driven by a movable shoulder pivotally mounted in the main body, at the end of which there is a weight, with the possibility of its movement along the shoulder. This embodiment of the fan, namely that the radial clearance between the fan blades and the fan casing increases in involute in the direction of rotation of the fan, provides an increase in performance without increasing the power of the fan motor. Pads made of flexible polymeric material provide tight contact with the wall of the lock gate, which prevents the intake of air from the cyclone, which affects the increase in productivity. Pads are adjustable in length, they are gradually put forward as they are erased against the wall of the lock gate during operation. The design of the intake device allows you to change the strength of the suction of the product, which ensures maximum intake of raw materials at a nominal load on the engine.

The inventive installation is illustrated by the following graphic material. Figure 1 - General view of the installation for pneumatic transportation of bulk products.

Figure 2 is a front view of the installation for pneumatic transportation of bulk products.

Figure 3 is a view of the lock gate. 4 is a General view of the throttle valve and its top view.

Under the action of the vacuum created by the fan 1, the product is absorbed by the intake device 2. The intake device is a metal body in the form of a hollow cylinder 3 with a handle and a hollow truncated conical part 4 inside the cylinder 3. Inside the body there is a pipe 5 mounted coaxially to the body 3 with the ability to move along the axis to adjust the gap between the truncated conical part 4 and the pipe 5. The size of the gap allows you to adjust the force of the suction of the product intake device 2. Under the action created by the fan 1 rarefaction of the product through the suction pipe 6 enters the cyclone 7, where it is deposited. The cyclone 7 contains a grid 8 to prevent product from entering the fan 1. A valve 10 is installed in the fan duct 9, containing a rotary damper 11 with an axis of rotation perpendicular to the flow axis at the inlet to the fan 1, with stops of the open and closed positions. The drive of the rotary damper 11 is a movable arm 12, pivotally mounted in the main body 9, at the end of which a weight 13 is located, with the possibility of moving along the arm 12. For optimal operation of the installation, the throttle valve 10 and the intake device 2 are set up for this purpose. 13 on the shoulder 12 is set to the position that when the installation is operated without grain intake (idling), the air flow generated by the fan 1, deflects the shutter 11 to the “closed” position, in which the valve motor torus operating at rated speed. When collecting raw materials, the pressure on the shutter 11 decreases, the weight 13 deviates it to the "open" position. After you configure the intake device 2 by moving the outer pipe 3 relative to the inner 5 to the optimal load on the engine. From the cyclone 7, through the lock gate 14, the transported product enters the line 15. The lock gate 14 contains blades in the form of metal plates 16 with overlays 17 made of an elastic polymer material, for example polyurethane, with the possibility of their adjustment along the length. In line 15, the air flows from the fan 1, the product moves to the required distance and height. Unloading of the product from the highway 15 is carried out by a cyclone-damper 18 installed at its end.

Obviously, this embodiment of the installation for pneumatic transportation of bulk products increases productivity.

Claims (2)

1. Installation for pneumatic transportation of bulk products, containing a suction device, a suction pipe, a cyclone with a mesh installed inside to prevent product from entering the fan chamber, a centrifugal fan, a fan line with a valve installed in it, containing a rotary damper with an axis at the inlet of the fan chamber rotation perpendicular to the axis of the flow, with stops of the open and closed position, airlock, characterized in that the radial clearance between the fan blades and The fan stroke increases in involute in the direction of rotation of the fan, the metal blades of the airlock lock contain lining of elastic polymer material with the possibility of their adjustment in length, the intake device is a metal case in the form of a hollow cylinder with a handle and a hollow truncated conical part inside the cylinder, while inside the cylinder is a pipe mounted coaxially with the cylinder with the ability to move along the axis to adjust the gap between the truncated conical part and the pipe, rivodom rotary valve movable arm is pivotally mounted in the housing pipe, at the end of which is located sinker, with the possibility of movement along the arm. 2. The installation according to claim 1, in which the pads on the blades of the airlock are made of polyurethane.

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