Device for preventing raw material tank from scaling

Abstract

The utility model discloses a device for preventing scaling of a raw material tank, and relates to the technical field of coal water slurry preparation, the device comprises a counter weight piece and separation nets, the counter weight piece is provided with an assembly hole, the separation nets are installed in the assembly hole and are fully distributed in the assembly hole, one side of each separation net is flush with one side of the assembly hole so that the two sides can be coplanar to form an abutting face, and the separation nets are arranged in the assembly hole. When the whole formed by the separation net and the balance weight piece is placed on the bottom wall of the raw material groove through the abutting face, the projection of the abutting face in the vertical direction is equal to the area of the bottom wall of the raw material groove. According to the utility model, through the arrangement of the counterweight piece and the separation net, when the whole body formed by the counterweight piece and the separation net is arranged on the bottom wall of the raw material tank by virtue of the contact surface, the projection sizes of the counterweight piece and the separation net in the vertical direction are equal to the area of the bottom wall of the raw material tank, so that when the bottom wall of the raw material tank is scaled, scaling substances can be attached to the counterweight piece and the separation net; subsequent workers only need to take down the balance weight piece and the separation net from the raw material tank, and the scaling matter on the bottom wall of the raw material tank can be cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of water-coal slurry preparation, in particular to a device for preventing scaling of a raw material tank. Background Art

[0002] Coal-water slurry (CWS) is a feedstock used in Texaco's gasification process. To prepare it, coal, water, and additives are ground and slurried in a rod mill according to a specific ratio. The resulting aqueous solution can then be fed into a gasifier for reaction. In this preparation process, CWS additives are crucial for achieving a qualified CWS. They improve the dispersion of solid particles and the flow properties of the CWS, reduce CWS viscosity, and increase CWS concentration.

[0003] In the prior art, coal slurry additives are unloaded from a tank truck into an additive raw material tank in the form of an aqueous solution with a solid content of 30%. In order to ensure accurate measurement during use, the aqueous solution containing 30% coal slurry additives needs to be diluted to 2%. Generally, a raw material tank is added, and a pipeline is used to transport the aqueous solution containing 30% coal slurry additives to the raw material tank. The aqueous solution containing 30% coal slurry additives is diluted using the raw material tank, and then the diluted coal slurry additives in the raw material tank are transported to the rod mill through a metering pump. Since the main component of the coal slurry additive is lignin sulfonate, lignin sulfonate is very easy to scale. If it scales on the inner wall of the raw material tank, it may block the corresponding conveying pipeline. The occurrence of this situation may further affect the measurement and use of the coal slurry additive, making it impossible to produce qualified water-coal slurry subsequently, thereby affecting normal production.

[0004] To avoid this, technicians typically install several sets of stirring components on the raw material tank, using the stirring components to continuously stir the coal slurry additive solution to keep it in a fluid state. However, the inventors discovered during actual use that even if the coal slurry additive solution is kept in a fluid state, a small amount of scaling will still form on the bottom wall of the raw material tank. After dilution is completed, the staff needs to use tools to scrape off the scaling. Since the scaling is located on the bottom wall of the raw material tank, the scraping operation is relatively inconvenient and the scraping cleaning effect is also poor.

[0005] Therefore, we propose a device for preventing scaling of raw material tank to solve the above problems. Utility Model Content

[0006] The purpose of the present utility model is to solve the problems in the prior art and to propose a device for preventing scaling in the raw material tank. The device relies on the contact surface formed by the counterweight and the partition to contact the bottom wall of the raw material tank. When scaling appears on the bottom wall of the raw material tank, the scaling will adhere to the counterweight and the partition. Subsequently, it is only necessary to remove the counterweight and the partition from the inside of the raw material tank to clean the scaling.

[0007] In order to solve the above problems, the present invention provides the following technical solutions:

[0008] A device for preventing scaling in a raw material trough comprises a counterweight and a partition net, wherein the counterweight is provided with an assembly hole, the partition net is installed in the assembly hole and is fully covered in the assembly hole, and one side of the partition net is flush with one side of the assembly hole so that the two sides are coplanar and form a resistance surface, and when the whole composed of the partition net and the counterweight is placed on the bottom wall of the raw material trough against the resistance surface, the projection of the resistance surface in the vertical direction is equal to the area of ​​the bottom wall of the raw material trough.

[0009] As a further solution of the present invention: the counterweight is a circular ring, the central area of ​​the circular ring constitutes the assembly hole, and the partition net is detachably mounted on the assembly hole.

[0010] As a further solution of the present invention: the counterweight is an annular tube, which is connected to an air inlet pipe and has a plurality of air outlet holes arranged in a circumferential array along the center of the circle. The central area of ​​the annular tube constitutes the assembly hole, and the partition net is detachably installed on the assembly hole.

[0011] As a further solution of the present invention, it also includes an annular frame that can be detachably mounted on the assembly hole, and the partition net is mounted inside the annular frame.

[0012] As a further solution of the present invention: a protrusion is provided on the outer circumference of the annular frame, and a groove for inserting the protrusion is provided on the inner side of the assembly hole.

[0013] As a further solution of the utility model, a locking piece is also included for locking the protrusion on the groove.

[0014] As a further solution of the present invention: the locking member includes a limit rod hingedly arranged on the counterweight member with a damping function, and the limit rod can be rotated to the movable path of the protrusion to interfere with its movement.

[0015] As a further solution of the present invention: the projection of the limiting rod in the vertical direction is located on the counterweight.

[0016] As a further solution of the present invention: the outer contour of the counterweight is the same as the inner contour of the raw material trough.

[0017] As a further solution of the present invention: the protrusions and grooves are both provided in plurality, and the plurality of protrusions are evenly distributed on the outer circumference of the annular frame, and the plurality of grooves are evenly distributed on the inner side of the assembly hole.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By setting the counterweight and the partition, when the whole composed of the counterweight and the partition is placed on the bottom wall of the raw material trough with the contact surface, the vertical projection size of the two is equal to the area of ​​the bottom wall of the raw material trough. Then, when scaling appears on the bottom wall of the raw material trough, the scaling will adhere to the counterweight and the partition. The subsequent staff only needs to remove the counterweight and the partition from the raw material trough to clean the scaling on the bottom wall of the raw material trough, and the cleaning effect is good.

[0020] 2. Through the structure of the screen, the scale on the screen is in mesh contact with the screen, the adhesion force is small, and the scale on the screen can be easily cleaned later, with high cleaning efficiency;

[0021] 3. The counterweight has two functions: on the one hand, it provides a mounting carrier for the screen, and on the other hand, it adds weight to the screen as a whole, so that during the production process, the screen can be stably placed on the bottom wall of the raw material tank without being disturbed by the flow of solution;

[0022] 4. By setting the counterweight as an annular tube, when a certain pressure of gas is delivered to the inlet pipe, the gas can be ejected from the annular tube through multiple outlet holes. This ejection action can stir and disturb the solution in the raw material tank, accelerate the flow of the solution, and reduce the formation of scale on the bottom wall of the raw material tank;

[0023] 5. Through the setting of the annular frame, the partition is fixedly set on the annular frame. When in use, a single counterweight is used to equip multiple annular frames. By replacing the annular frames later, the bottom wall of the raw material trough can be cleaned more quickly.

[0024] 6. By setting the locking piece, the convex part and the groove can be locked by the locking piece, thereby achieving a stable locking of the partition net on the counterweight;

[0025] 7. By setting the locking element as a damping hinged limit rod, the limit rod can be suspended at any position, ensuring that the limit rod's own position is effectively maintained and locking is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the structure of the utility model in the raw material tank;

[0028] Figure 2 This is a schematic diagram of the top view of the counterweight in the present invention;

[0029] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 4This is a schematic diagram of the top view of the partition net in the utility model;

[0031] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure along the MM line;

[0032] Figure 6 This is a schematic diagram of the top view of the structure of the utility model;

[0033] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure at B in the middle;

[0034] Figure 8 yes Figure 6 Schematic diagram of the cross-sectional structure along the NN line.

[0035] In the figure: 1. counterweight; 101. assembly hole; 102. air inlet pipe; 103. air outlet; 2. partition; 3. resistance surface; 4. annular frame; 5. protrusion; 6. groove; 7. limit rod; a. raw material trough; b. stirring mechanism; c. conveying pipe. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] like Figures 1-8 As shown, a device for preventing scaling in a raw material trough includes a counterweight 1 for being placed on the bottom wall of the raw material trough a. The outer contour of the counterweight 1 is the same size as the inner contour of the raw material trough a, so that the counterweight 1 and the inner wall of the raw material trough a always maintain a tight fit. For example, when the inner wall contour of the raw material trough a is circular, the outer contour of the counterweight 1 is also set to a circular shape that matches it; when the inner wall contour of the raw material trough a is rectangular, the outer contour of the counterweight 1 is also set to a rectangular shape that matches it.

[0038] Furthermore, a mounting hole 101 is provided on the counterweight 1, and a partition 2 is installed on the mounting hole 101. At the same time, the partition 2 fully covers the mounting hole 101. One side of the partition 2 is flush with one side of the mounting hole 101 so that the two sides are coplanar to form a contact surface 3. The state of the contact surface 3 can be determined by Figure 8 To express it, when the whole composed of the partition 2 and the counterweight 1 is placed on the bottom wall of the raw material tank a by the contact surface 3, that is, Figure 1In the state shown, the contact surface 3 is located at the bottom of the counterweight 1 and the partition 2 and contacts the bottom wall of the raw material tank a. At the same time, the vertical projection of the contact surface 3 is equal to the area of ​​the bottom wall of the raw material tank a, that is, the counterweight 1 and the partition 2 can fully cover the bottom wall of the raw material tank a. In the subsequent production process, the scale originally hardened on the bottom wall of the raw material tank a will be hardened on the counterweight 1 and the partition 2. After the production is completed, it is only necessary to remove the counterweight 1 and the partition 2 from the raw material tank a to clean the bottom wall of the raw material tank a, and the cleaning effect is good. In addition, due to the presence of the partition 2, the scale on the partition 2 is in mesh contact with the partition 2, and the adhesion force is small. The scale on the partition 2 can be easily cleaned later, and the cleaning efficiency is high.

[0039] It should be noted that the counterweight 1 provided in the present invention has two functions. On the one hand, it is to provide a mounting carrier for the partition 2. On the other hand, it is to increase the weight of the partition 2 as a whole, so that during the production process, the partition 2 can be stably placed on the bottom wall of the raw material tank a without being disturbed by the flow of the solution.

[0040] like Figure 2-Figure 8 As shown, this article takes the case where the inner side wall of the raw material trough a is circular and the outer contour of the counterweight 1 is set to be circular for explanation. In this case, the counterweight 1 can be set in the following two structures:

[0041] (1) The counterweight 1 is set to be a circular ring, and the central area of ​​the circular ring constitutes an assembly hole 101. The partition net 2 can be detachably installed on the assembly hole 101. The partition net 2 can be stably placed by utilizing the deadweight of the counterweight 1, so that the counterweight 1 and the partition net 2 can work normally.

[0042] (2) The counterweight 1 is configured as an annular tube, and the central region of the annular tube forms an assembly hole 101, and the partition 2 is detachably mounted on the assembly hole 101; further, an air inlet pipe 102 is connected to the annular tube, and a plurality of air outlet holes 103 are arranged in an array along the circumference of the center of the annular tube. Figure 1 In the state shown, one end of the air inlet pipe 102 is sealed and extends out of the raw material tank a. By supplying nitrogen (or other inert gas) at a certain pressure to the air inlet pipe 102, the nitrogen can be injected into the annular tube and ejected from the multiple air outlets 103. This ejection action can stir and disturb the solution in the raw material tank a, thereby accelerating the flow of the solution and reducing the formation of scale on the bottom wall of the raw material tank a. Of course, in order to further reduce the formation of scale, a stirring mechanism b in the prior art can also be added to the raw material tank a. In the process of transporting the aqueous solution containing 30% coal slurry additive to the raw material tank a through the delivery pipe c, the stirring mechanism b can be driven to work while spraying nitrogen. Under the combined action of these two stirring and disturbing actions, the formation of scale can be minimized.

[0043] like Figure 4-Figure 8 As shown, in order to make the partition 2 detachably mounted on the counterweight 1, the utility model further comprises an annular frame 4 detachably mounted on the assembly hole 101, and the partition 2 is mounted inside the annular frame 4. This state can be Figure 4 As shown above, the position of the partition 2 on the annular frame 4 is the side of the annular frame 4, and the layout of this position can be represented by Figure 5 To represent, when the annular frame 4 is detachably mounted on the assembly hole 101 of the counterweight 1, the positional relationship between the partition 2 and the counterweight 1 can be represented by Figure 8 To represent, the right side in the figure constitutes the above-mentioned conflict surface 3. It should be noted that Figure 8 yes Figure 6 In the cross-sectional structural diagram along the NN line direction, in order to clearly show the position of the interference surface 3, the locking parts and other structures described below are not shown in the figure.

[0044] like Figure 4 and Figure 6 As shown, for the detachable connection design between the annular frame 4 and the assembly hole 101, the utility model can be provided with a protrusion 5 on the outer circumference of the annular frame 4, and a groove 6 for inserting the protrusion 5 is provided on the inner side of the assembly hole 101. The number of protrusions 5 and grooves 6 is not limited to the four shown in the accompanying drawings, and can also be set according to actual needs. In order to ensure that the protrusion 5 and the groove 6 are inserted and fastened, the two can be connected by interference fit, or a lock can be added to lock the protrusion 5 on the groove 6. Specifically, the lock includes a limit rod 7 hingedly provided on the counterweight 1 with a damping. Under normal circumstances, the limit rod 7 is in a Figure 2 In the state shown, when the protrusion 5 is inserted into the groove 6, the limiting rod 7 can be driven to rotate until the limiting rod 7 rotates to the active path of the protrusion 5 to interfere with its movement, that is, the protrusion 5 will be locked on the groove 6. This state can be Figure 6 and Figure 7 At the same time, through the damping setting of the limit rod 7, the limit rod 7 can be suspended at any position, ensuring that the position of the limit rod 7 itself is effectively maintained.

[0045] It should be noted that no matter what state the limiting rod 7 is in at the end, its projection in the vertical direction is always located on the counterweight 1 to ensure that the operation of the counterweight 1 and the partition net 2 is not affected.

[0046] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A device for preventing scaling of a raw material tank, characterized in that: The invention comprises a counterweight (1) and a partition (2), wherein the counterweight (1) is provided with an assembly hole (101), the partition (2) is installed in the assembly hole (101) and is fully covered in the assembly hole (101), and one side of the partition (2) is flush with one side of the assembly hole (101) so that the two sides are coplanar to form a contact surface (3), and when the whole composed of the partition (2) and the counterweight (1) is placed on the bottom wall of the raw material tank (a) by relying on the contact surface (3), the vertical projection of the contact surface (3) is equal to the area of ​​the bottom wall of the raw material tank (a).

2. The device for preventing scaling of a raw material tank according to claim 1, characterized in that: The counterweight (1) is a circular ring, the central area of ​​the circular ring forms the assembly hole (101), and the partition net (2) is detachably mounted on the assembly hole (101).

3. The device for preventing scaling of a raw material tank according to claim 1, characterized in that: The counterweight (1) is an annular tube, an air inlet pipe (102) is connected to the annular tube, and a plurality of air outlet holes (103) are arranged in an array along the center of the annular tube. The central area of ​​the annular tube constitutes the assembly hole (101), and the partition net (2) is detachably mounted on the assembly hole (101).

4. A device for preventing scaling of a raw material tank according to any one of claims 1 to 3, characterized in that: It also includes an annular frame (4) that is detachably mounted on the assembly hole (101), and the partition net (2) is mounted inside the annular frame (4).

5. The device for preventing scaling of a raw material tank according to claim 4, characterized in that: The outer circumference of the annular frame (4) is provided with a protrusion (5), and the inner side of the assembly hole (101) is provided with a groove (6) for inserting the protrusion (5).

6. The device for preventing scaling of a raw material tank according to claim 5, characterized in that: It also includes a locking member for locking the protrusion (5) on the groove (6).

7. The device for preventing scaling of a raw material tank according to claim 6, characterized in that: The locking element comprises a limiting rod (7) hingedly arranged on the counterweight (1) with a damping function, and the limiting rod (7) can be rotated to the active path of the protrusion (5) to interfere with its movement.

8. The device for preventing scaling of a raw material tank according to claim 7, characterized in that: The projection of the limiting rod (7) in the vertical direction is located on the counterweight (1).

9. A device for preventing scaling of a raw material tank according to any one of claims 1 to 3, characterized in that: The outer contour of the counterweight (1) is the same as the inner contour of the raw material trough (a).

10. The device for preventing scaling of a raw material tank according to claim 5, characterized in that: The protrusions (5) and grooves (6) are both provided in plurality, and the plurality of protrusions (5) are evenly distributed on the outer circumference of the annular frame (4), and the plurality of grooves (6) are evenly distributed on the inner side of the assembly hole (101).

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