Pneumatic conveying anti-wall building fluidized bin pump

Abstract

The utility model discloses a kind of pneumatic conveying anti-wall-formation fluidization bin pump, including bin pump body, the top of bin pump body is communicated with ash inlet pipeline, bin pump body is also communicated with ash conveying pipeline, it is characterized in that, the bottom of bin pump body is communicated with nitrogen fluidization pipe, the lower part of bin pump body is provided with porous fluidization plate;Nitrogen fluidization pipe's gas inlet end is communicated with high-pressure nitrogen pipe;Rotary vane is provided in bin pump body;Rotary vane's pivot is communicated with driving mechanism.In bin pump body setting rotary vane and segmentation rod, and by hydraulic motor drive, can be smashed into bin pump's purification dust, and prevent purification dust wall-formation;High-pressure nitrogen is introduced into the bottom of bin pump body, and after being scattered by air current, purification dust is blown away by ash conveying pipeline.Purification dust wall-formation is solved, and the problem of agglomeration and pipe blockage.

Description

Technical Field

[0001] This utility model belongs to the field of calcium carbide production technology, specifically relating to a pneumatic conveying anti-caking fluidized bed pump. Background Technology

[0002] The dust generated during the purification of furnace gas in the calcium carbide production process is easily ignited and easily spreads as dust when exposed to air. It is classified as solid waste and must be humidified and stirred before disposal. The treatment cost is high and the environmental pollution is significant, so it needs to be treated and recycled.

[0003] Current comprehensive utilization methods mostly employ pneumatic conveying, using silo-type pneumatic conveying pumps (hereinafter referred to as silo pumps) to deliver purified dust to cement kilns or hot air furnaces for use as fuel. However, due to the characteristics of purified dust, which contains moisture, tar, calcium oxide, and calcium hydroxide, the dust has high viscosity and easily adheres to the silo walls or clumps within the pump. This affects the fluidization effect of the dust and causes pipe blockage during conveying. The most common problems encountered in the pneumatic conveying of purified dust are dust clumping on the silo pump walls or forming clumps, gradually reducing the pump space and eventually causing blockages that prevent further conveying. This necessitates frequent and dangerous manual cleaning of the silo pump, consuming significant manpower. Utility Model Content

[0004] The purpose of this utility model is to provide a fluidized bed pump for preventing the ash from caking during the calcium carbide production process by using a high-torque hydraulic motor to drive the blades. The blades rotate against the inner wall of the pump to prevent the ash from caking on the wall. Combined with the bottom nitrogen flow, this solves all or part of the problems mentioned in the background art.

[0005] A pneumatic conveying fluidized bed pump for preventing wall caking includes a pump body, an ash inlet pipe connected to the top of the pump body, and an ash conveying pipe connected to the pump body. The pump body is characterized by having a nitrogen flow-through pipe connected to the bottom of the pump body, a perforated fluidizing plate at the lower part of the pump body, an inlet end of the nitrogen flow-through pipe connected to a high-pressure nitrogen pipe, rotating blades within the pump body, and a drive mechanism connected to the shaft of the rotating blades.

[0006] Furthermore, the drive mechanism includes a hydraulic motor and a hydraulic station; the output shaft of the hydraulic motor is connected to the rotating shaft of the rotating blade via a coupling; the hydraulic motor is mounted on the perforated fluidizing plate and is connected to the hydraulic station via an oil supply pipeline. Using a hydraulic motor offers advantages such as small size, high torque, no heat dissipation issues, and simple sealing, and it can be placed inside the silo pump body.

[0007] Furthermore, the rotating blade is L-shaped and includes a first blade and a second blade. The outer wall of the first blade is parallel to the inner wall of the pump body. A dividing rod is provided on the rotating blade, with one end of the dividing rod on the first blade and the other end on the second blade. As the rotating blade rotates, the dividing rod can break up the clumps of purified dust.

[0008] Beneficial effects: This utility model discloses a pneumatic conveying fluidized bed pump with anti-caking properties. Rotating blades and dividing rods are installed within the pump body and driven by a hydraulic motor. This breaks up the purified dust entering the pump and prevents it from clumping against the pump walls. High-pressure nitrogen is introduced at the bottom of the pump body, and the purified dust is dispersed by the airflow and then blown away through the conveying pipe. This solves the problem of purified dust caking and clogging the pipes. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the structure of a pneumatic conveying fluidized bed pump designed to prevent wall clogging.

[0011] Explanation of reference numerals in the attached drawings: 1. Silo pump body; 2. Ash inlet pipe; 21. Feed valve; 3. Ash conveying pipe; 31. Discharge valve; 4. Hydraulic station; 5. Oil conveying pipeline; 6. Hydraulic motor; 7. Rotating blade; 71. First blade; 72. Second blade; 73. Dividing rod; 8. Nitrogen fluidization pipe; 9. Porous fluidizing plate; 10. High-pressure nitrogen pipe. Detailed Implementation

[0012] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0013] Example 1 A pneumatic conveying anti-caking fluidized bed pump, such as Figure 1As shown, it includes a silo pump body 1, with an ash inlet pipe 2 connected to the top of the silo pump body 1, and an ash conveying pipe 3 connected to the silo pump body 1. One end of the ash conveying pipe 3 extends into the silo pump body 1 to transport the purified dust inside the silo pump body 1 to other processes.

[0014] The bottom of the silo pump body 1 is connected to the outlet end of the nitrogen flow transformation pipe 8, and the inlet end of the nitrogen flow transformation pipe 8 is connected to the high-pressure nitrogen pipe 10; the lower part of the silo pump body 1 is designed in a split form, with flange connection, and a perforated fluidizing plate 9 is installed between the flanges.

[0015] The pump body 1 is equipped with a rotating blade 7; the shaft of the rotating blade 7 is connected to a drive mechanism. The drive mechanism includes a hydraulic motor 6 and a hydraulic station 4; the output shaft of the hydraulic motor 6 is connected to the shaft of the rotating blade 7 via a coupling; the hydraulic motor 6 is located at the center of the top of the perforated fluidizing plate 9, and the hydraulic motor 6 is connected to the hydraulic station 4 via oil supply lines 5 (one hydraulic inlet pipe and one hydraulic return pipe); the hydraulic motor 6 is covered with a protective housing to prevent dust from entering. The rotating blade 7 is L-shaped and includes a first blade 71 and a second blade 72. The outer side wall of the first blade 71 is parallel to the inner side wall of the pump body 1; a dividing rod 73 is provided on the rotating blade 7, one end of the dividing rod 73 is located on the first blade 71, and the other end of the dividing rod is located on the second blade 72.

[0016] During the pneumatic conveying process of purified dust, the feed valve 21 and discharge valve 31 are opened, and the purified dust enters the silo pump body 1 through the dust inlet pipe 2. While being pressurized with nitrogen, the rotating blade 7 rotates under the drive of the hydraulic motor 6. The first blade 71 rotates along the inner wall of the silo pump body 1 to prevent the purified dust from clumping on the wall. At the same time, the dividing rod 73 breaks up the small pieces that have formed as the rotating blade 7 rotates. Combined with the flow of nitrogen at the bottom of the silo, the purified dust is fluidized and activated. Finally, the purified dust is sent to the subsequent process through the dust conveying pipe 3.

[0017] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic conveying anti-caking fluidized bed pump, comprising a pump body, wherein an ash inlet pipe is connected to the top of the pump body, and the pump body is also connected to an ash conveying pipe, characterized in that, The bottom of the pump body is connected to a nitrogen flow transformation pipe, and a porous fluidizing plate is provided at the lower part of the pump body; the inlet end of the nitrogen flow transformation pipe is connected to a high-pressure nitrogen pipe. The pump body is equipped with rotating blades; the rotating shaft of the rotating blades is connected to a drive mechanism.

2. The pneumatic conveying anti-caking fluidized bed pump according to claim 1, characterized in that, The drive mechanism includes a hydraulic motor and a hydraulic station; the output shaft of the hydraulic motor is connected to the rotating shaft of the rotating blade via a coupling; the hydraulic motor is mounted on the porous fluidizing plate and is connected to the hydraulic station via an oil supply pipeline.

3. The pneumatic conveying anti-caking fluidized bed pump according to claim 1, characterized in that, The rotating blade is L-shaped and includes a first blade and a second blade. The outer side wall of the first blade is parallel to the inner side wall of the pump body. A dividing rod is provided on the rotating blade, with one end of the dividing rod on the first blade and the other end of the dividing rod on the second blade.

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