Plug-in expansion joint for coal bucket

Abstract

The utility model discloses a plug-in expansion joint for a coal bucket, which relates to the technical field of coal feeder processing and comprises an upper connecting ring, the bottom surface of the upper connecting ring is fixedly connected with an expansion ring, and the bottom surface of the expansion ring is fixedly connected with a lower connecting ring; an annular contact disc is arranged on the bottom surface of the lower connecting ring, a positioning disc is arranged on the bottom surface of the contact disc, a coal feeder is arranged below the positioning disc, a coal inlet is formed in the top surface of the coal feeder, and the positioning disc extends into the coal inlet; the inner walls of the contact disc and the positioning disc are obliquely arranged and are in threaded connection with a coal bucket structure; the expansion joint structure is arranged, the expansion joint body is used for positioning and mounting the coal bucket structure, the coal bucket structure is obliquely arranged in order to accelerate the blanking speed of internal coal, and the expansion joint body can be used for excessively connecting the obliquely arranged coal bucket structure and the vertically arranged coal inlet; the contact area of the expansion joint structure is increased through the stepped contact disc, the positioning disc and the internal threads, and therefore heat can be transferred more effectively.

Description

Technical Field

[0001] The utility model relates to the technical field of coal feeder processing, and particularly relates to an insertion type expansion joint for a coal bunker. Background Technique

[0002] An expansion joint is an elastic compensation element that can freely expand and contract. It is mainly used to compensate for the additional stress caused by temperature difference and mechanical vibration, thereby protecting the normal operation of pipelines and equipment, and can effectively play the role of compensating axial, lateral, and angular deformations. It absorbs the dimensional changes or displacements of pipelines, ducts, containers, etc. caused by thermal expansion and contraction, medium flow, etc. through its own elastic deformation, thereby reducing the stress of pipelines and equipment.

[0003] In the pipeline connection of coal feeders, expansion joints are often used to reduce the deformation caused by high-temperature coal. For example, an insertion type sealing expansion joint for a coal feeder with the publication number CN201545519U solves the problems of easy coal sticking and coal blockage of existing expansion joints. Its characteristics are that a corrugated plate with an arc-shaped and flat outer ring with two upper claws and two lower claws is rolled from a stainless steel plate, and the lower claws are symmetrically connected to a stainless steel pipe.

[0004] The top surface of this expansion joint is connected to a coal bunker in the shape of a vertical pipeline. However, the coal bunkers in the prior art are often designed in a funnel shape with a larger top and a smaller bottom to accelerate the coal discharging speed. This expansion joint is connected to an inclined coal bunker and a vertical coal feeder at both ends respectively, and the inner cavity of this expansion joint causes the inclined coal bunker to shake after installation. Summary of the Invention

[0005] The purpose of the utility model is to solve the problem of the instability of the inclined coal bunker installed on the top surface of the expansion joint in the above background technique, and to propose an insertion type expansion joint for a coal bunker.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] An insertion type expansion joint for a coal bunker includes an upper connection ring. The bottom surface of the upper connection ring is fixedly connected with an expansion ring, and the bottom surface of the expansion ring is fixedly connected with a lower connection ring; a circular contact disk is arranged on the bottom surface of the lower connection ring, and a positioning disk is arranged on the bottom surface of the contact disk; the inner walls of the contact disk and the positioning disk are inclined, and a coal bunker structure is threadedly connected to the inner walls of the contact disk and the positioning disk.

[0008] As a further scheme of the utility model: a connection cylinder is arranged at the bottom end of the coal bunker structure. An external thread is arranged on the circumferential surface of the connection cylinder, and internal threads are arranged on the inner walls of the contact disk and the positioning disk. The connection cylinder is threadedly connected to the contact disk and the positioning disk.

[0009] As a further solution of the utility model: The radius of the connecting cylinder is smaller than the radius of the bottom end of the coal hopper structure, and the connecting cylinder and the bottom end of the coal hopper structure are in a stepped shape.

[0010] As a further solution of the utility model: The inner cavities of the contact disk and the positioning disk are connected in a transitional manner. The contact disk and the positioning disk are inclined. The taper of the inner cavities of the contact disk and the positioning disk is the same as the taper of the connecting cylinder.

[0011] As a further solution of the utility model: The surface of the coal hopper structure is inclined. The radius of the coal hopper structure gradually decreases from top to bottom in the vertical direction; the surfaces of the upper connecting ring and the lower connecting ring are inclined, and the surface of the coal hopper structure contacts the inner walls of the upper connecting ring and the lower connecting ring.

[0012] As a further solution of the utility model: A coal feeder is arranged below the positioning disk. The top surface of the coal feeder is provided with a coal inlet, and the positioning disk extends into the coal inlet;

[0013] As a further solution of the utility model: A conveyor belt is arranged inside the coal feeder.

[0014] As a further solution of the utility model: The coal inlet is located above the conveyor belt.

[0015] As a further solution of the utility model: The bottom surface of the contact disk is set as a horizontal plane, and the contact disk contacts the top surface of the coal inlet.

[0016] As a further solution of the utility model: The shape of the positioning disk is the same as the shape of the inner cavity of the coal inlet.

[0017] The beneficial effects of the utility model:

[0018] (1) For the insertable expansion joint for a coal hopper of the utility model, by setting the expansion joint structure, when the high-temperature coal enters the coal inlet of the coal feeder from the coal hopper structure, it drives the temperature of the coal hopper structure itself to increase. The coal hopper structure transfers the heat to the surrounding expansion joint body, and the expansion rings on the surface of the expansion joint body are heated and deformed to adapt to the high temperature; the expansion joint body positions and installs the coal hopper structure. The coal hopper structure is inclined to accelerate the falling speed of the coal inside. The expansion joint body can make a transitional connection between the inclined coal hopper structure and the vertically arranged coal inlet;

[0019] (2) An insert type expansion joint for a coal bunker of the present utility model is provided with a contact disk and a positioning disk. The contact disk and the inner wall of the lower connecting ring are in a stepped shape, so as to position and install the coal bunker structure; the positioning disk extends into the coal inlet to assist in positioning the expansion joint body at the coal inlet; the internal threads provided inside the contact disk and the positioning disk and the external threads of the connecting cylinder are used for quickly installing the funnel structure; the stepped contact disk and positioning disk, as well as the internal threads inside, increase the contact area between the coal bunker structure and the expansion joint structure, so that heat can be transferred more effectively. Brief Description of the Drawings

[0020] The present utility model will be further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the connection structure of an insert type expansion joint for a coal bunker of the present utility model;

[0022] Figure 2 It is a schematic diagram of the internal connection structure of an insert type expansion joint for a coal bunker of the present utility model;

[0023] Figure 3 It is the present utility model Figure 2 The partial enlarged view at A in;

[0024] Figure 4 It is a schematic diagram of the structure of a coal feeder of the present utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the expansion joint body of the present utility model;

[0026] Figure 6 It is a sectional view schematic diagram of the expansion joint body of the present utility model.

[0027] In the figure: 1. Coal feeder; 11. Coal inlet; 12. Conveyor belt; 2. Coal bunker structure; 21. Connecting cylinder; 3. Expansion joint structure; 31. Upper connecting ring; 32. Expansion ring; 33. Lower connecting ring; 34. Contact disk; 35. Positioning disk; 36. Internal thread. Detailed Embodiment

[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figure 1-6As shown in the figure, the utility model relates to an insertion type expansion joint for a coal hopper, which comprises a coal feeder 1. The top surface of the coal feeder 1 is provided with a coal inlet 11, and the coal inlet 11 is communicated with the inner cavity of the coal feeder 1. A conveyor belt 12 is arranged in the inner cavity of the coal feeder 1, and the coal inlet 11 is located above the conveyor belt 12. An expansion joint structure 3 is arranged at the coal inlet 11 of the coal feeder 1, a coal hopper structure 2 is arranged on the top surface of the expansion joint structure 3, a connecting cylinder 21 is arranged at the bottom end of the coal hopper structure 2, and the radius of the connecting cylinder 21 is smaller than the radius of the bottom end of the coal hopper structure 2, so that a part of the horizontal bottom surface of the coal hopper structure 2 is exposed. External threads are arranged on the outer surface of the connecting cylinder 21.

[0030] The expansion joint structure 3 comprises an upper connecting ring 31. The shape of the upper connecting ring 31 is a circular ring with a certain taper, and the radius of the upper connecting ring 31 gradually decreases from top to bottom along the vertical direction. The shape of the upper connecting ring 31 is adapted to the shape of the coal hopper structure 2, and the taper of the upper connecting ring 31 is the same as the surface taper of the coal hopper structure 2. A circular ring-shaped expansion ring 32 is fixedly arranged at the bottom end of the upper connecting ring 31, a lower connecting ring 33 is fixedly connected below the expansion ring 32, and the lower connecting ring 33 is provided with the same taper as the upper connecting ring 31. A contact disc 34 is fixedly connected to the bottom surface of the lower connecting ring 33. The shape of the contact disc 34 is circular ring-shaped, the bottom surface of the contact disc 34 is set as a horizontal plane, and the self-width of the contact disc 34 is greater than the width of the lower connecting ring 33. A circular ring-shaped positioning disc 35 is arranged at the bottom of the lower connecting ring 33, and the outer circumferential shape of the positioning disc 35 is the same as the inner cavity shape of the coal inlet 11 of the coal feeder 1. The positioning disc 35 is fixedly connected with the contact disc 34, the positioning disc 35 is connected with the inner cavity wall of the contact disc 34, the inner cavities of the positioning disc 35 and the contact disc 34 are inclined, and the radius of the inner cavities gradually decreases from top to bottom. The inner cavity shapes of the positioning disc 35 and the contact disc 34 are the same as the shape of the connecting cylinder 21, and internal threads 36 are arranged on the inner cavity walls of the positioning disc 35 and the contact disc 34.

[0031] When using this plug-in expansion joint for the coal bunker, place the expansion joint body at the coal inlet 11 of the coal feeder 1. The positioning disk 35 at the bottom end of the expansion joint body is inserted into the inner cavity of the coal inlet 11, and the positioning disk 35 positions and installs the expansion joint body. Subsequently, place the coal bunker structure 2 from the top surface of the expansion joint body, and the connecting cylinder 21 at the bottom end of the coal bunker structure 2 extends into the contact disk 34 and the positioning disk 35. The stepped shape formed by the bottom end of the coal bunker structure 2 and the connecting cylinder 21 positions and installs the coal bunker structure 2 itself. The connecting cylinder 21 extends into the contact disk 34 and the positioning disk 35, driving the coal bunker structure 2 to rotate, and the connecting cylinder 21 is threadedly connected to the expansion joint body. At this time, the inclined upper connecting ring 31 and the lower connecting ring 33 of the expansion joint structure 3 are in close contact with the inclined surface of the coal bunker structure 2, so that heat can be transferred more fully. Fixed welding is carried out in the gaps between the expansion joint body, the coal bunker structure 2, and the coal feeder 1, so that the expansion joint structure 3 completes the connection between the coal bunker structure 2 and the coal feeder 1. When high-temperature coal enters the coal inlet 11 of the coal feeder 1 from the coal bunker structure 2, it drives the temperature of the coal bunker structure 2 itself to increase. The coal bunker structure 2 transfers heat to the surrounding expansion joint body, and the expansion ring 32 on the surface of the expansion joint body is deformed by heat to adapt to high temperature. The expansion joint body positions and installs the coal bunker structure 2. The coal bunker structure 2 is inclined to accelerate the falling speed of the coal inside. The expansion joint body can make an overconnection between the inclined coal bunker structure 2 and the vertically arranged coal inlet. The positioning disk 35 at the bottom of the expansion joint structure 3 can position and install the expansion joint on the top surface of the coal inlet 11. The stepped contact disk 34 and the lower connecting ring 33 inside the expansion joint structure 3 position and install the coal bunker structure 2. The coal bunker structure 2 and the expansion joint body are quickly installed by threads.

[0032] The working principle of the present utility model: An insertable expansion joint for a coal bunker of the present utility model, when high-temperature coal enters the coal inlet 11 of the coal feeder 1 from the coal bunker structure 2 through the expansion joint structure 3, it drives the temperature of the coal bunker structure 2 itself to increase. The coal bunker structure 2 transfers heat to the surrounding expansion joint body, and the expansion ring 32 on the surface of the expansion joint body is deformed by heat to adapt to high temperature. The expansion joint body positions and installs the coal bunker structure 2. The coal bunker structure 2 is inclined to accelerate the falling speed of the coal inside. The expansion joint body can make an overconnection between the inclined coal bunker structure 2 and the vertically arranged coal inlet; by setting the contact disk 34 and the positioning disk 35, the contact disk 34 and the inner wall of the lower connecting ring 33 are in a stepped shape, so as to position and install the coal bunker structure 2; the positioning disk 35 extends into the coal inlet to assist in positioning the expansion joint body in the coal inlet; the internal threads 36 provided inside the contact disk 34 and the positioning disk 35 and the external threads of the connecting cylinder 21 quickly install the funnel structure; the stepped contact disk 34 and the positioning disk 35, as well as the internal threads 36, all increase the contact area between the coal bunker structure 2 and the expansion joint structure 3, so that heat can be transferred more effectively.

[0033] The above has described in detail an embodiment of the present utility model, but the above content is only a preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. An insertable expansion joint for a coal bunker, characterized in that It includes an upper connecting ring (31). The bottom surface of the upper connecting ring (31) is fixedly connected with an expansion ring (32), and the bottom surface of the expansion ring (32) is fixedly connected with a lower connecting ring (33). A circular contact disk (34) is arranged on the bottom surface of the lower connecting ring (33). A positioning disk (35) is arranged on the bottom surface of the contact disk (34). A coal feeder (1) is arranged below the positioning disk (35). The inner walls of the contact disk (34) and the positioning disk (35) are inclined. A coal hopper structure (2) is threadedly connected to the inner walls of the contact disk (34) and the positioning disk (35).

2. The plug-in expansion joint for a coal bunker according to claim 1, characterized in that A connecting cylinder (21) is arranged at the bottom end of the coal hopper structure (2). External threads are arranged on the circumferential surface of the connecting cylinder (21). Internal threads (36) are arranged on the inner walls of the contact disk (34) and the positioning disk (35). The connecting cylinder (21) is threadedly connected to the contact disk (34) and the positioning disk (35).

3. The plug-in expansion joint for a coal bunker according to claim 2, characterized in that The radius of the connecting cylinder (21) is smaller than the radius of the bottom end of the coal hopper structure (2), and the connecting cylinder (21) and the bottom end of the coal hopper structure (2) are stepped.

4. The insert type expansion joint for a coal bunker according to claim 3, characterized in that, The inner cavities of the contact disk (34) and the positioning disk (35) are connected in a transitional manner. The contact disk (34) and the positioning disk (35) are inclined. The taper of the inner cavities of the contact disk (34) and the positioning disk (35) is the same as the taper of the connecting cylinder (21).

5. An insertion type expansion joint for a coal bunker according to claim 1, characterized in that, The surface of the coal hopper structure (2) is inclined. The radius of the coal hopper structure (2) gradually becomes smaller from top to bottom in the vertical direction. The surfaces of the upper connecting ring (31) and the lower connecting ring (33) are inclined. The surface of the coal hopper structure (2) contacts the inner walls of the upper connecting ring (31) and the lower connecting ring (33).

6. The plug-in expansion joint for a coal bunker according to claim 1, wherein A coal inlet (11) is arranged on the top surface of the coal feeder (1). The positioning disk (35) extends into the coal inlet (11).

7. The plug-in expansion joint for a coal bunker according to claim 6, characterized in that, A conveyor belt (12) is arranged inside the coal feeder (1).

8. The plug-in expansion joint for a coal bunker according to claim 7, characterized in that, The coal inlet (11) is located above the conveyor belt (12).

9. The insertable expansion joint for a coal bunker according to claim 1, characterized in that, The bottom surface of the contact disk (34) is set as a horizontal plane, and the contact disk (34) contacts the top surface of the coal inlet (11).

10. The plug-in expansion joint for a coal bunker according to claim 1, characterized in that The shape of the positioning disk (35) is the same as the shape of the inner cavity of the coal inlet (11).

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