Coal mixing device

Abstract

The utility model relates to the technical field of crushing devices, in particular to a coal mixing device which comprises a mounting frame and two coal storage bunkers, and further comprises a proportioning part which comprises a proportioning unit for containing coal in the coal storage bunkers and a crane scale which is mounted above the proportioning unit and is used for metering the mass of the coal conveyed by the coal storage bunkers; the material mixing unit is used for mixing coal materials and primarily crushing the coal materials, and comprises a material mixing bin arranged below the material distribution unit and a crushing roller mounted in the material mixing bin; according to the coal material mixing device, coal materials with different proportions can be weighed through the matching part, so that the proportion can be quickly adjusted; and meanwhile, the arranged mixing unit can contain coal and mix and crush the coal, so that uniformly mixed materials of high-calorific-value coal and low-calorific-value coal in different proportions can be conveniently provided for the coal power unit, and the flexible operation capability of peak regulation of the coal power unit is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crushing devices, in particular to a coal material mixing device. Background Art

[0002] At present, the power grid system has gradually increased its requirements for the deep peak-shaving flexibility of coal-fired power units. The characteristics of the coal entering the furnace have become crucial. The coal characteristics include the type of coal and the particle size of the coal. It is considered that the flexible operation of the coal-fired power unit can be adjusted by different feeding ratios of high calorific value coal and low calorific value coal. However, the existing device only uses one raw coal hopper and one pulverizer, which cannot be adjusted to obtain different proportions of coal, which greatly affects the flexible operation of the coal-fired power unit.

[0003] In summary, we consider designing a mixing device that can adjust the different proportions of high calorific value coal and low calorific value coal, so that the proportions can be adjusted and preliminarily crushed before entering the coal mill; in view of this, we propose a coal mixing device. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies mentioned in the above background technology and provide a coal material mixing device.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A coal material mixing device comprises a mounting frame and two coal storage bins, and also comprises:

[0007] A proportioning unit, comprising a proportioning unit for receiving the coal in the coal storage bin, and a hanging scale installed above the proportioning unit for measuring the quality of the coal transported by the coal storage bin;

[0008] The mixing unit is used for mixing coal and preliminarily crushing it, and comprises a mixing bin arranged below the batching unit and a crushing roller installed in the mixing bin.

[0009] Preferably, the batching unit comprises a batching bin with a first butterfly valve installed at the bottom;

[0010] The batching bin is provided with two material receiving ports corresponding to the coal storage bin.

[0011] Preferably, a connecting plate is installed below the hanging scale, and the batching bin and the connecting plate are respectively provided with a first lifting lug and a second lifting lug corresponding to each other;

[0012] The first lifting lug and the second lifting lug are connected via a steel cable.

[0013] Preferably, the mixing bin is provided with a second butterfly valve and a receiving interface for receiving the coal in the batching bin;

[0014] The containing interface adopts an expansion structure which gradually becomes larger from top to bottom.

[0015] Preferably, the mixing bin is provided with limiting vertical grooves at the bin walls on both sides of the containing interface, and the batching bin is provided with limiting blocks corresponding to the positions of the limiting vertical grooves;

[0016] The batching bin is inserted at the containing interface through the limit block, and the bottom of the batching bin does not contact the mixing bin.

[0017] Preferably, an inner supporting block for lifting the mixing bin is installed on the mounting frame, and a silicone rubber cushion layer is provided on the surface of the inner supporting block.

[0018] Preferably, a vibration motor is installed on the mixing bin.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The coal mixing device can weigh coals of different proportions separately through the proportioning part, which is convenient for rapid adjustment of the proportions; at the same time, the mixing unit can receive the coal and mix and crush it, which is convenient for providing the coal-fired power unit with a mixture of high calorific value coal and low calorific value coal in different proportions, which is beneficial to improving the flexible operation capability of the coal-fired power unit for peak load regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 This is one of the overall structural diagrams of the utility model;

[0023] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0024] Figure 3 This is a cross-sectional view of the overall structure of the utility model;

[0025] Figure 4 This is a relationship diagram between the mixing unit and the batching unit of the utility model.

[0026] The meaning of each number in the figure is:

[0027] 1. Mounting frame; 2. Coal storage bin; 3. Inner support block;

[0028] 4. Batching unit; 41. Batching bin; 411. First lifting lug; 412. Limit block; 42. First butterfly valve; 5. Mixing unit; 51. Mixing bin; 511. Container interface; 512. Limit vertical slot; 52. Second butterfly valve; 6. Driving motor; 7. Vibrating motor; 8. Hanging scale; 9. Connecting plate; 91. Second lifting lug; 10. Steel cable; 11. Crushing roller. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-4 The utility model describes the above technical solution in detail through the following embodiments:

[0031] A coal material mixing device comprises a mounting frame 1 and two coal storage bins 2, and further comprises:

[0032] The proportioning part includes a proportioning unit 4 for receiving the coal in the coal storage bin 2 in batches, and a hanging scale 8 installed above the proportioning unit 4 for measuring the quality of the coal transported by the coal storage bin 2.

[0033] The mixing unit 5 is used for mixing coal and preliminarily crushing it. In this embodiment, it includes a mixing bin 51 arranged below the batching unit 4, and a crushing roller 11 installed in the mixing bin 51 and driven by a driving motor 6.

[0034] In this embodiment, in order to obtain high calorific value coal and low calorific value coal in different proportions, the two coal storage bins 2 can be controlled to store and release high calorific value coal and low calorific value coal respectively, and the mass ratio relationship can be obtained through the hanging scale 8. After mixing, it is released to the mixing unit 5 below, and crushed and mixed by the crushing roller 11 to obtain coal with a fixed proportion and uniform particle size; high calorific value coal and low calorific value coal can be injected at any time subsequently, which is convenient for adjusting the coal ratio again in the middle, with strong adjustability and easy operation.

[0035] See also Figure 3 In the structure shown, the batching unit 4 includes a batching bin 41 with a first butterfly valve 42 installed at the bottom. The batching bin 41 is provided with two material receiving ports corresponding to the coal storage bin 2. In this embodiment, the discharge port of the batching bin 41 is connected to the material receiving port through a conduit. In this embodiment, the material receiving port adopts a sloped structure with an opening inclined upward, the purpose of which is to facilitate the coal to slide down and accumulate at the bottom of the bin.

[0036] In order to obtain a weighing structure in this embodiment, a connecting plate 9 is installed under the hanging scale 8, and a first lifting ear 411 and a second lifting ear 91 are respectively provided on the batching bin 41 and the connecting plate 9, and the first lifting ear 411 and the second lifting ear 91 are connected by a steel cable 10. This structure can obtain a stable lifting state, and in this embodiment, the mixing bin 51 is provided with a limiting vertical groove 512 on the bin wall on both sides of the receiving interface 511, and a limiting block 412 corresponding to the position of the limiting vertical groove 512 is provided on the batching bin 41, the purpose of which is to keep the batching bin 41 and the mixing bin 51 relatively still, and the limiting vertical groove 512 plays an anti-swaying role in the limiting installation.

[0037] It needs to be explained that in Figure 3 It can be seen that the mixing bin 51 is provided with a second butterfly valve 52 and a receiving interface 511 for receiving the coal in the batching bin 41. The receiving interface 511 adopts an expansion structure that gradually increases from top to bottom. The batching bin 41 is inserted at the receiving interface 511 through a limit block 412, and the bottom of the batching bin 41 does not contact the mixing bin 51 and must remain non-contacted, otherwise it will affect the weighing accuracy.

[0038] In this embodiment, an inner support block 3 for lifting the mixing bin 51 is installed on the mounting frame 1, and a silicone rubber cushion layer is provided on the surface of the inner support block 3. A vibration motor 7 is installed on the mixing bin 51, and the vibration motor 7 provides vibration force, which can enable the mixing bin 51 to obtain vibration force based on the silicone rubber cushion layer to prevent the coal in the bin from adhering to the bin wall.

[0039] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "multiple" means more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A coal material mixing device, comprising a mounting frame (1) and two coal storage bins (2), characterized in that: Also includes: The proportioning part comprises a proportioning unit (4) for receiving the coal in the coal storage bin (2), and a hanging scale (8) installed above the proportioning unit (4) for measuring the mass of the coal transported by the coal storage bin (2); The mixing unit (5) is used for mixing coal and preliminarily crushing it, and comprises a mixing bin (51) arranged below the batching unit (4), and a crushing roller (11) installed in the mixing bin (51).

2. The coal material mixing device according to claim 1, characterized in that: The batching unit (4) comprises a batching bin (41) with a first butterfly valve (42) installed at the bottom; The batching bin (41) is provided with two material receiving ports corresponding to the coal storage bin (2).

3. The coal material mixing device according to claim 2, characterized in that: A connecting plate (9) is installed below the hanging scale (8), and the batching bin (41) and the connecting plate (9) are respectively provided with a first lifting lug (411) and a second lifting lug (91) in one-to-one correspondence; The first lifting eye (411) and the second lifting eye (91) are connected via a steel cable (10).

4. The coal material mixing device according to claim 2, characterized in that: The mixing bin (51) is provided with a second butterfly valve (52) and a receiving interface (511) for receiving the coal in the batching bin (41); The containing port (511) adopts an expansion structure that gradually increases in size from top to bottom.

5. The coal material mixing device according to claim 4, characterized in that: The mixing bin (51) is provided with limiting vertical grooves (512) at the bin walls on both sides of the containing interface (511), and the batching bin (41) is provided with limiting blocks (412) corresponding to the positions of the limiting vertical grooves (512); The batching bin (41) is inserted into the receiving interface (511) via the limit stopper (412), and the bottom of the batching bin (41) does not contact the mixing bin (51).

6. The coal-fuel mixing device according to claim 2, characterized in that: An inner support block (3) for supporting the mixing bin (51) is mounted on the mounting frame (1), and a silicone rubber cushion layer is provided on the surface of the inner support block (3).

7. The coal-fuel mixing device according to claim 6, characterized in that: The mixing bin (51) is provided with a vibration motor (7).

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