CN203767349U - Progressive rotation scraper type blockage preventing and removing machine - Google Patents

Abstract

The utility model relates to a reciprocating rotary scraper type anti-blocking and clearing machine, comprising an upper cone hopper, a rotary scraper mechanism, a lower cone hopper, a slewing bearing and a deceleration mechanism, the upper cone hopper and the lower cone hopper are combined into a cone hopper; the cone hopper The inner cavity is equipped with a fixed scraper; the rotary scraper mechanism is set between the upper cone hopper and the lower cone hopper, and performs reciprocating rotary motion on both sides of the fixed scraper; The gears are connected with a reducer; the upper cone hopper, the lower cone hopper, the slewing bearing and the inner cavity of the rotary scraper mechanism are integrated to form an anti-blocking section; The surface of the inner cavity is close, and the length of the scraper is consistent with the height of the inner cavity of the rotary scraper mechanism. The beneficial effects of the utility model are: it can thoroughly remove the surface coal phenomenon of the inner chamber of the upper and lower hoppers and the rotary scraper mechanism, and the utility model has the advantages of remarkable effect of preventing and clearing blockages and good sealing performance.

Description

A reciprocating rotary scraper type anti-blocking and cleaning machine

technical field

The utility model relates to a coal scuttle anti-blocking and cleaning machine equipped with a direct-blown pulverizing system in a thermal power plant, in particular to a reciprocating rotating scraper type anti-blocking and cleaning machine for raw coal bunkers.

Background technique

At present, in order to match the coal feeder, the raw coal bunker supporting the pulverization system of the thermal power plant has a conical or inverted hyperbolic structure from the coal storage bin to the coal feeder. The crushed raw coal is temporarily stored in the raw coal bunker. Due to the Due to its own gravity, the upper pressure of the inverted conical bin or the lower part of the inverted hyperbola is relatively large and easy to compact and harden, and the outlet is quite small, which is prone to blockage and affects the safety of equipment operation. There are many reasons for the blockage of the raw coal bunker, but the root cause is that when refueling the conical raw coal bunker, the granular fuel is subjected to gravity, friction with the raw coal bunker wall, friction between the granular fuel and mutual friction. Factors such as extrusion form a load-bearing structure at the position of the discharge port. At the same time, due to the influence of uncertain factors such as coal quality and climate, the fuel becomes wet and viscous increases, forming a hardened surface and making the discharge port smaller, which eventually leads to coal blockage in the raw coal bunker. Manpower and related protective equipment can hardly prevent blockage at any time. occur. The clogging of raw coal bunkers in power plants and the clogging of similar granular material bunkers have become widespread and common problems.

In the prior art, the following two methods are mainly used to prevent blockage: 1. Use the rotation of the coal bunker in the middle section to cooperate with the fixed scraper, and cut off the material on the inner wall when rotating, so as to prevent and clear the blockage. This method It can only prevent and clear blockage on the rotating part, but not on the upper and lower coal bunkers, and there will be coal accumulation and coal blockage; Although the effect of using the scraper to prevent and clear the blockage of the upper and lower coal bunkers is better, it cannot avoid the phenomenon of coal accumulation and coal blockage in the inner cavity of the rotary mechanism.

Therefore, it is expected by those skilled in the art to develop a novel anti-blockage and blockage removal machine with simple structure and thorough blockage removal.

Contents of the invention

The main technical problem to be solved by the utility model is to provide a reciprocating rotary scraper type anti-blocking and cleaning machine, which has the advantages of simple structure and thorough anti-blocking and cleaning.

The purpose of this utility model is accomplished through the following technical solutions, including an upper cone hopper, a rotary scraper mechanism, a lower cone hopper, a slewing bearing and a deceleration mechanism, the upper cone hopper and the lower cone hopper are combined into a cone hopper; the cone hopper The inner cavity is provided with a fixed scraper; the rotary scraper mechanism is arranged between the upper cone hopper and the lower cone hopper, and performs reciprocating rotary motion on both sides of the fixed scraper; the slewing bearing is respectively connected to the upper cone hopper and the lower cone hopper It is fixedly connected, and the gear is meshed with the outside, and the gear is connected with a reducer; the upper cone hopper, the lower cone hopper, the slewing bearing, and the inner cavity of the rotary scraper mechanism are integrated to form an anti-blocking warehouse section. The inner cavity of the cone hopper is provided with a fixed scraper, the surface of the scraper is close to the surface of the inner cavity of the rotary scraper mechanism, and the length of the scraper is consistent with the height of the inner cavity of the rotary scraper mechanism. The rotary scraper mechanism includes a rotary cutterhead, a left scraper, a right scraper and a support rod, the rotary cutterhead is fixed on the inner wall of the inner steel ring of the slewing bearing, and the left scraper and the right scraper are arranged on the rotary cutterhead , a support rod is connected between the left scraper and the right scraper.

Preferably, the left scraper and the right scraper are arranged obliquely along the inner wall of the cone hopper, and extend to the upper mouth of the upper cone hopper and the lower mouth of the lower cone hopper.

Preferably, the left scraper and the right scraper in the rotary scraper mechanism have the same structure and are arranged symmetrically with respect to the central axis of the inner cavity of the cone hopper.

The beneficial effects of the utility model are as follows: 1. The upper and lower cone hoppers do not rotate, and the rotary scraper rotates reciprocally to clean the inner cavity of the upper and lower cone hoppers; 2. The fixed scraper clears the inner cavity of the rotary cutterhead; 3. , The rotating scraper is longer, which can achieve a larger range of anti-blocking and clearing.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the structural representation of the utility model fixed scraper;

Fig. 3 is a schematic structural view of the utility model rotary scraper;

The labels in the accompanying drawings are: 1. Upper cone hopper, 2. Lower cone hopper, 3. Guard, 4. Rotary cutterhead, 5. Support, 6. Slewing bearing inner steel ring, 7. Slewing bearing gear, 8. Left scraper, 9. Right scraper, 10. Support rod, 11. Fixed scraper, 12. Gland, 13. Gear, 14. Reducer.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings: as shown in accompanying drawings 1 to 3, the utility model includes an upper cone hopper 1, a rotating scraper mechanism, a lower cone hopper 2, a slewing bearing and a deceleration mechanism, the upper cone hopper 1 and the lower cone hopper 2 are combined to form a cone hopper; the inner cavity of the cone hopper is provided with a fixed scraper 11; The side makes reciprocating rotary motion; the slewing bearing is fixedly connected with the upper cone hopper 1 and the lower cone hopper 2 respectively, a gear 13 is meshed with the outside, the gear 13 is connected with a reducer 14, and a shield 3 is provided around the slewing bearing. A support 5 is provided below the slewing bearing; the upper cone hopper 1, the lower cone hopper 2, the slewing bearing and the inner cavity of the rotary scraper mechanism are integrated to form an anti-blocking bin section.

The left scraper 8 and the right scraper 9 in the rotary scraper mechanism have the same structure, and are arranged symmetrically with respect to the central axis of the inner cavity of the cone hopper, and are connected into one body by a support rod 10, which enhances the rigidity and strength, and the rotary scraper can be Do longer, left scraper 8 and right scraper 9 work simultaneously, and the quantity of described scraper can be reduced to one according to actual requirement.

The rotary scraper mechanism includes a rotary cutterhead 4, a left scraper 8, a right scraper 9 and a support rod 10. The rotary cutterhead 4 is fixed on the inner wall of the inner steel ring 6 of the slewing bearing. The rotary cutterhead 4 is connected with the slewing bearing gear 7 are connected, the left scraper 8 and the right scraper 9 are arranged on the rotary cutter head 4, a support rod 10 is connected between the left scraper 8 and the right scraper 9, when in use, the left scraper 8 and the right scraper 9 rotate simultaneously, Break the arched blockages of the upper and lower silos, so that the materials can flow without the support of the inner wall, so as to achieve the functions of clearing and preventing blockages.

The left scraper 8 and the right scraper 9 are arranged obliquely along the inner wall of the cone hopper, and extend to the upper mouth of the upper cone hopper 1 and the lower mouth of the lower cone hopper 2, so as to increase the cleaning length and enhance the cleaning effect.

The utility model is not limited to the above-mentioned embodiments, regardless of any changes in its shape or material composition, any structural design provided by the utility model is a deformation of the utility model, and should be considered as a modification of the utility model. within the scope of protection.

Claims (3)

1. the anti-blocking cleaner of reciprocating rotary scraper type, is characterized in that: comprise epicone hopper (1), revolving scraper mechanism, lower cone hopper (2), pivoting support and speed reduction gearing, this epicone hopper (1) is combined into cone hopper with lower cone hopper (2); Described cone hopper inner chamber is provided with fixed doctor (11); Described revolving scraper mechanism is arranged between described epicone hopper (1) and lower cone hopper (2), and in fixed doctor (11) both sides, does reciprocating rotating motion; Described pivoting support is fixedly connected with lower cone hopper (2) with epicone hopper (1) respectively, and external engagement has gear (13), and gear (13) is connected with reductor (14); The inner chamber of described epicone hopper (1), lower cone hopper (2) and pivoting support, revolving scraper mechanism is connected, form anti-blocking storehouse section, described cone hopper inner chamber is provided with a fixed doctor (11), blade face and revolving scraper mechanism surface of internal cavity are pressed close to, and scraper length is consistent with revolving scraper mechanism inner chamber height; Described revolving scraper mechanism comprises circular cutter disk (4), left scraper (8), right scraper (9) and strut bar (10), described circular cutter disk (4) is fixed on the inwall of steel ring (6) in pivoting support, it is upper that described left scraper (8) and right scraper (9) are arranged on described circular cutter disk (4), between left scraper (8) and right scraper (9), is connected with strut bar (10).

2. the anti-blocking cleaner of reciprocating rotary scraper type according to claim 1, it is characterized in that: described left scraper (8) and right scraper (9) are obliquely installed along the inwall of cone hopper, and extend to the place suitable for reading of epicone hopper (1) and the end opening place of lower cone hopper (2).

3. the anti-blocking cleaner of reciprocating rotary scraper type according to claim 1, is characterized in that: the in-house left scraper of described revolving scraper (8) is identical with right scraper (9) structure, and is symmetrical arranged about the axis of described cone hopper inner chamber.