Sand blowing dust removal system
By improving the purge pipeline and dust removal system, the problem of incomplete cleaning of sand at the ductile iron pipe sockets is solved, and efficient dust removal and long-life operation of the equipment are achieved.
Patent Information
- Application Number
- CN202422076375.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-08-26
AI Technical Summary
During the production process of existing ductile iron pipes, the residual sand and other debris at the socket are not cleaned, resulting in a secondary cleaning in the later stage, and a large amount of large-grain waste sand enters the vacuum cleaner pipeline, affecting the dust removal effect and pipeline life.
The purge pipe design is adopted, including an inclined airway with oblique blowing, a vertical airway with direct blowing airway and a horizontal air outlet. It is combined with the dust reduction mechanism to ensure full coverage of 360° of the inner wall of the ductile iron pipe, and improve the dust removal effect through the dust collector and filter cartridge system.
It realizes efficient sand-blowing cleaning of the inner wall of ductile iron pipes, avoids secondary cleaning, extends the service life of the dust removal system, and improves the dust removal effect and the durability of the equipment.
Smart Images
Figure CN223250511U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ductile iron pipe processing, in particular to a sand blowing and dust removal system. Background Art
[0002] In the production process of ductile iron pipes, centrifugal casting is a key step. It uses centrifugal force to evenly distribute the molten iron in the mold to form the pipe body of the desired shape. Ductile iron pipes need to be sand-blown and cleaned before annealing. Traditional cleaning devices use horizontal air ducts. When the horizontal air duct is used, the direction of the wind may not be completely perpendicular to the inner wall of the socket or cannot form the optimal cleaning angle. This limits the cleaning effect of the wind and makes it impossible to effectively blow off debris such as residual sand adhering to the inner wall of the socket. Furthermore, since the air outlet direction of the air duct is fixed, there may be blind spots in the cleaning, and the debris at the socket cannot be cleaned up, resulting in the need for secondary cleaning before painting.
[0003] In addition, due to the large amount of sand, a large amount of waste sand has to be blown out each time and then sucked away, resulting in a large amount of large-particle waste sand in the dust removal pipeline, which seriously affects the dust removal effect and causes particularly serious wear and tear on the dust collection pipeline, causing multiple pipelines to be damaged and leak dust. Utility Model Content
[0004] The utility model provides a sand blowing and dust removal system to solve the technical problems in the prior art that residual sand and other debris at the socket of ductile iron pipes cannot be cleaned thoroughly and needs secondary cleaning in the later stage. In addition, a large amount of large particles of waste sand will enter the dust collection pipe, affecting the dust removal effect and service life.
[0005] In order to solve the above problems, the utility model provides a sand blowing and dust removal system adopting the following technical solutions:
[0006] The utility model comprises a purging pipe which is inserted into the socket end of the ductile iron pipe and performs sandblasting to clean the inside of the pipe. The socket end of the ductile iron pipe is provided with a dust reduction mechanism cooperating with the purging pipe. The purging pipe comprises a hollow central pipe, one end of the central pipe is provided with a trumpet-shaped port, an inclined air duct connected to the central pipe is formed inside the trumpet-shaped port, the end face of the outlet end of the inclined air duct is a transverse horizontal plane, an intermediate pipe is provided on the outer sleeve of the central pipe, a first direct current air duct is formed between the inner wall and the outer wall of the intermediate pipe, a guide end is provided at one end of the intermediate pipe close to the trumpet-shaped port, a guide air duct connected to the first direct current air duct is formed inside the guide end, and the outlet end of the guide air duct is directed to discharge air perpendicular to the axis of the central pipe.
[0007] Furthermore, the length of the intermediate pipe is shorter than that of the central pipe, and a distance is formed between the flow guide end and the trumpet-shaped port.
[0008] Furthermore, an outer layer pipe is provided on the outer sleeve of the middle pipe, a second direct current air channel is formed between the inner wall and the outer wall of the outer layer pipe, an air outlet end is provided at the end of the outer layer pipe close to the guide end, an air outlet channel connected to the second direct current air channel is formed between the inner wall and the outer wall of the air outlet end, and the air outlet direction of the outlet end of the air outlet channel is parallel to the axis of the central pipe.
[0009] Furthermore, the length of the outer layer pipe is shorter than that of the middle pipe, and a distance is formed between the air outlet end and the flow guide end.
[0010] Furthermore, the dust reduction mechanism includes a dust collector, and the dust collector is connected to a dust removal pipe, and the free end of the dust removal pipe is opposite to the socket end of the ductile iron pipe in the air.
[0011] Furthermore, the free end of the dust removal pipe is provided with a trumpet-shaped filter end, a double-layer filter grate is provided in the filter end, and a dust collecting box is provided below between the ductile iron pipe and the dust removal pipe.
[0012] Furthermore, a filter cartridge is provided in the dust collector, and the filter cartridge includes a hollow upper end cover and a solid lower end cover, a filter element is provided between the upper end cover and the lower end cover, and the upper end cover and the lower end cover are detachably connected by a connecting rod, and the two ends of the connecting rod respectively pass through the upper end cover and the lower end cover and are locked by threads.
[0013] Furthermore, the bottom end of the dust collector is connected to an ash hopper, the ash hopper is placed obliquely and a bracket is provided at the bottom end, and a dust outlet is provided at the downwardly inclined end of the ash hopper.
[0014] The beneficial effect of the utility model is that when the blowing pipe of the utility model is in use, the sand blowing effect of the inner wall of the ductile iron pipe is improved through the inclined air channel for oblique blowing, the guide air channel for vertical blowing and the air outlet end for horizontal blowing, so that sand, residual iron and other debris in the ductile iron pipe can be cleaned up, avoiding secondary cleaning in the later stage, and at the same time improving the dust removal effect and service life of the dust removal mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:
[0016] Figure 1 This is a schematic diagram of the sand blowing and dust removal system of the utility model;
[0017] Figure 2 Schematic diagram of the purge pipeline in the present utility model;
[0018] Figure 3 It is a schematic diagram of the filter cartridge in the present invention.
[0019] Description of reference numerals:
[0020] 1. Purge duct; 11. Center duct; 111. Trumpet-shaped port; 112. Inclined air duct; 12. Intermediate duct; 121. First direct air duct; 122. Guide end; 123. Guide air duct; 13. Outer duct; 131. Second direct air duct; 132. Outlet end; 133. Outlet channel; 2. Ductile iron pipe; 3. Dust suppression mechanism; 31. Dust collector; 32. Dust removal pipe; 321. Filter end; 33. Dust collecting box; 34. Filter cartridge; 341. Upper end cover; 342. Lower end cover; 343. Filter element; 344. Connecting rod; 35. Ash hopper; 351. Dust outlet pipe. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.
[0022] Any number of elements in the drawings is for illustration and not limitation, and any naming is for distinction only and does not have any limiting meaning.
[0023] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.
[0024] The embodiment of the sand blowing and dust removal system provided by the utility model:
[0025] like Figures 1 to 3 As shown, it includes a purge pipe 1 which is inserted into the socket end of the ductile iron pipe 2 and performs sandblasting to clean the inside thereof. The socket end of the ductile iron pipe 2 is provided with a dust reduction mechanism 3 which cooperates with the purge pipe 1. The purge pipe 1 includes a hollow central pipe 11, and one end of the central pipe 11 is provided with a trumpet-shaped port 111. The trumpet-shaped port 111 has an inclined air duct 112 formed inside the central pipe 11 and connected to the central pipe 11. The end face of the outlet end of the inclined air duct 112 is a transverse horizontal plane. An intermediate pipe 12 is provided on the outer sleeve of the central pipe 11, and a first straight air duct 121 is formed between the inner wall and the outer wall of the intermediate pipe 12. The end of the intermediate pipe 12 close to the trumpet-shaped port 111 is provided with a guide end 122, and a guide air duct 123 connected to the first straight air duct 121 is formed in the guide end 122. The outlet end of the guide air duct 123 is directed to discharge air perpendicular to the axis of the central pipe 11.
[0026] The length of the intermediate pipe 12 is shorter than that of the central pipe 11 , and a distance is formed between the flow guide end 122 and the trumpet-shaped port 111 .
[0027] Among them, an outer layer pipe 13 is arranged outside the middle pipe 12, and a second direct air channel 131 is formed between the inner wall and the outer wall of the outer layer pipe 13. An outlet end 132 is provided at the end of the outer layer pipe 13 close to the guide end 122, and an outlet channel 133 connected to the second direct air channel 131 is formed between the inner wall and the outer wall of the outlet end 132. The outlet end of the outlet channel 133 points to be parallel to the axis of the central pipe 11.
[0028] The length of the outer pipe 13 is shorter than that of the middle pipe 12 , and a distance is formed between the gas outlet end 132 and the flow guide end 122 .
[0029] Specifically, the purge pipe 1 improves the sand blowing effect of the inner wall of the ductile iron pipe 2 through the inclined air duct 112 for oblique blowing, the guide air duct 123 for vertical blowing, and the air outlet end 132 for horizontal blowing, so as to clean up the sand, residual iron and other debris in the ductile iron pipe 2, avoid secondary cleaning in the later stage, and at the same time improve the dust removal effect and service life of the dust removal mechanism 3.
[0030] The included angle between the inclined air passage 112 and the horizontal plane is 45°.
[0031] In this embodiment, the dust reduction mechanism 3 includes a dust collector 31 , and a dust removal pipe 32 is connected to the top of the dust collector 31 . The free end of the dust removal pipe 32 is opposite to the socket end of the ductile iron pipe 2 in the air.
[0032] The free end of the dust removal pipe 32 is provided with a bell-shaped filter end 321 , and a double-layer filter grate is provided inside the filter end 321 . A dust collecting box 33 is provided below between the ductile iron pipe 2 and the dust removal pipe 32 .
[0033] During specific use, the dust-laden air blown out of the purge pipe 1 enters the dust collector 31 through the dust removal pipe 32 for dust reduction treatment.
[0034] Before the dust-laden air enters the dust removal pipe 32, it first passes through the filter grate to filter out large sand particles, and the filtered large sand particles fall into the dust collecting box 33, preventing large sand particles from entering the dust removal pipe 32, which on the one hand affects the dust removal effect, and on the other hand prevents large particles of waste sand from entering the dust removal pipe 32, causing serious wear on its inner wall, which may easily cause problems such as pipe damage and dust leakage.
[0035] In this embodiment, a filter cartridge 34 is provided in the dust collector 31, and the filter cartridge 34 includes a hollow upper end cover 341 and a solid lower end cover 342. A filter element 343 is provided between the upper end cover 341 and the lower end cover 342. The upper end cover 341 and the lower end cover 342 are detachably connected by a connecting rod 344, and the two ends of the connecting rod 344 respectively pass through the upper end cover 341 and the lower end cover 342 and are locked by threads.
[0036] During use, the upper end of the upper end cover 341 is provided with a flange connection for external installation. Dust-laden gas enters the dust collector 31, where it is filtered and adheres to the outer surface of the filter element 343. The filtered gas is then discharged through the air outlet at the top of the dust collector 31, where an induced draft fan is installed.
[0037] The upper end cover 341 and the lower end cover 342 are connected by a connecting rod 344 to enhance the stability of the overall structure of the filter cartridge 34 and prevent the structure from loosening or falling off due to vibration or dust adhesion.
[0038] In this embodiment, the bottom end of the dust collector 31 is connected to an ash hopper 35 . The ash hopper 35 is placed obliquely and a bracket is provided at the bottom end. A dust outlet pipe 351 is provided at the obliquely downward end of the ash hopper 35 .
[0039] Specifically, a pulse jet structure is provided on the top of the dust collector 31 , which allows the dust on the outer wall of the filter element 343 to fall off after a period of use, enter the ash hopper 35 and be discharged through the dust outlet pipe 351 .
[0040] During the overall use process, compressed air is blown into the ductile iron pipe 2 through the purge pipe 1. After passing through the purge pipe 1, the compressed air is divided into three paths. The purge pipe 1 moves from the socket end to the plug end for purge. At the same time, the ductile iron pipe 2 gradually rotates to achieve 360° full coverage to ensure clean blowing. The vertical air outlet, horizontal air outlet and inclined air outlet can cooperate to clean up the debris in the socket groove to ensure that no subsequent cleaning is required.
[0041] The dust-laden gas blown out from the ductile iron pipe 2 enters the dust collector 31 through the dust removal pipe 32 for dust reduction treatment.
[0042] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and other terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings of this specification. They are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.
[0043] In addition, in the description of this specification, “a plurality of” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.
Claims
1. A sand blowing and dust removal system, comprising a purge pipe (1) inserted into the socket end of a ductile iron pipe (2) and used to blow sand and clean the interior of the pipe, the socket end of the ductile iron pipe (2) being provided with a dust suppression mechanism (3) cooperating with the purge pipe (1), characterized in that: The purge pipe (1) comprises a hollow central pipe (11), one end of the central pipe (11) is provided with a trumpet-shaped port (111), an inclined airway (112) in communication with the central pipe (11) is formed inside the trumpet-shaped port (111), the end face of the outlet end of the inclined airway (112) is a transverse horizontal plane, an intermediate pipe (12) is provided on the outer shell of the central pipe (11), a first straight airway (121) is formed between the inner wall and the outer wall of the intermediate pipe (12), an end of the intermediate pipe (12) close to the trumpet-shaped port (111) is provided with a guide end (122), a guide airway (123) in communication with the first straight airway (121) is formed inside the guide end (122), and the outlet end of the guide airway (123) is directed to discharge gas perpendicular to the axis of the central pipe (11).
2. The sand blowing and dust removal system according to claim 1, characterized in that: The length of the intermediate pipe (12) is shorter than that of the central pipe (11), and a distance is formed between the flow guide end (122) and the trumpet-shaped port (111).
3. The sand blowing and dust removal system according to claim 2, characterized in that: The intermediate pipe (12) is provided with an outer pipe (13) on its outer sleeve, a second straight air channel (131) is formed between the inner wall and the outer wall of the outer pipe (13), an outlet end (132) is provided at one end of the outer pipe (13) close to the flow guide end (122), an outlet channel (133) connected to the second straight air channel (131) is formed between the inner wall and the outer wall of the outlet end (132), and the outlet end of the outlet channel (133) is directed to discharge air in a direction parallel to the axis of the central pipe (11).
4. The sand blowing and dust removal system according to claim 3, characterized in that: The length of the outer layer pipe (13) is shorter than the length of the middle pipe (12), and a distance is formed between the air outlet end (132) and the flow guide end (122).
5. The sand blowing and dust removal system according to claim 1, characterized in that: The dust removal mechanism (3) comprises a dust collector (31), the dust collector (31) is connected to a dust removal pipe (32), and the free end of the dust removal pipe (32) is opposite to the socket end of the ductile iron pipe (2) in the air.
6. The sand blowing and dust removal system according to claim 5, characterized in that: The free end of the dust removal pipe (32) is provided with a bell-shaped filter end (321), and a double-layer filter grate is provided inside the filter end (321). A dust collecting box (33) is provided below between the ductile iron pipe (2) and the dust removal pipe (32).
7. The sand blowing and dust removal system according to claim 5, characterized in that: A filter cartridge (34) is provided in the dust collector (31), and the filter cartridge (34) comprises a hollow upper end cover (341) and a solid lower end cover (342). A filter element (343) is provided between the upper end cover (341) and the lower end cover (342). The upper end cover (341) and the lower end cover (342) are detachably connected via a connecting rod (344), and the two ends of the connecting rod (344) respectively pass through the upper end cover (341) and the lower end cover (342) and are locked by threads.
8. The sand blowing and dust removal system according to claim 5, characterized in that: The bottom end of the dust collector (31) is connected to an ash hopper (35), the ash hopper (35) is placed obliquely and a bracket is provided at the bottom end, and a dust outlet pipe (351) is provided at the obliquely downward end of the ash hopper (35).