A hard metal composite nozzle structure

Abstract

The utility model relates to hard alloy composite nozzle structure technical field, concretely is a kind of hard alloy composite nozzle structure, including inner shell subassembly, the outer shell subassembly is arranged on the outer side of inner shell subassembly, the inner shell subassembly upper portion port is arranged with flow guide subassembly, the outer shell subassembly includes the outer shell main part made of hard alloy material quality, the inner shell main part inner chamber and located the flow guide subassembly lower direction is outwardly variable-diameter expansion and is provided with buffer chamber, in the utility model, by utilizing the protection of outer shell main part to nozzle main body outside, and it adopts tungsten alloy material quality, reduce the wear degree of shell in use process, increase its service life, avoid the influence of production efficiency by frequent replacement of nozzle, when airflow enters buffer chamber, due to the expansion of inner diameter, to reduce the impact and wear of inner shell main body inner wall, and then overall improve the service life of nozzle.

Description

Technical Field

[0001] This utility model relates to the technical field of cemented carbide composite nozzle structure, specifically a cemented carbide composite nozzle structure. Background Technology

[0002] High-pressure pneumatic flow-assisted cleaning is a technique that uses high-pressure compressed air as a power source to spray airflow at high speed, in a directional or diffused manner into the blocked or sticky areas of the silo through a nozzle with a specific structure, thereby loosening and removing the material. The nozzle, as the core component of the airflow jet, must have high wear resistance, high temperature resistance and corrosion resistance to avoid damage to the nozzle structure or airflow deviation under harsh working conditions, which would affect the cleaning efficiency and equipment life.

[0003] Currently, high-pressure pneumatic flow-assisted cleaning nozzles are mainly made of 304 stainless steel. While nozzles made of this material have a certain degree of corrosion resistance, their hardness cannot meet the requirements. During production, the high-pressure airflow carrying solid particles continuously erodes the inner wall of the nozzle, accelerating its wear. Furthermore, at the nozzle orifice, under the influence of pressure difference, the orifice is prone to enlargement due to wear and corrosion, resulting in reduced spray cleaning effect and affecting the nozzle's service life. In addition, frequent nozzle replacements increase operating costs and require machine downtime, thus impacting production efficiency. Therefore, a hard alloy composite nozzle structure is proposed to address these issues. Utility Model Content

[0004] To address the shortcomings of existing technologies, such as the inability of existing nozzle structures to meet the requirements of harsh working conditions, short service life, frequent nozzle replacement leading to increased production costs, and downtime for replacement affecting production efficiency, this utility model proposes a hard alloy composite nozzle structure.

[0005] The technical solution adopted by this utility model to solve its technical problem is: the hard alloy composite nozzle structure of this utility model includes an inner shell assembly, an outer shell assembly is provided on the outside of the inner shell assembly, a connecting assembly for fastening the outer shell assembly is provided on the outer wall of the inner shell assembly, and a flow guiding assembly is provided in the upper port of the inner shell assembly.

[0006] The inner shell assembly includes an inner shell body made of stainless steel, and the outer shell assembly includes an outer shell body made of hard alloy, and the outer shell body is fitted onto the outside of the spray end of the inner shell body.

[0007] The top of the inner shell body is provided with a No. 1 threaded connection part for connecting with external equipment. The inner side of the opening at the top of the inner shell body partially expands outward to form a fitting part, and the flow guide component is threadedly fitted into the fitting part.

[0008] The inner shell body has a buffer cavity located below the flow guide assembly and extending outwards with a variable diameter.

[0009] Preferably, the hard alloy used for the outer shell body can be made of tungsten alloy material, depending on the working conditions, to be suitable for high impact and high temperature scenarios.

[0010] Preferably, the hard alloy used for the outer shell body can be a composite alloy material with aluminum alloy as the base and silicon carbide particles added, depending on the working conditions. This reduces the overall weight of the nozzle while ensuring its wear resistance, which helps to reduce the energy consumption of the equipment.

[0011] Preferably, a limiting rib groove is formed on the inner wall of the outer shell body, and a limiting rib strip is fixed on the outer wall of the inner shell body to slide and engage with the limiting rib groove. A first spray hole and a second spray hole are respectively formed on the bottom end and the inclined surface of the inner shell body, and a third spray hole and a fourth spray hole are respectively formed on the bottom end and the inclined surface of the outer shell body, and the third spray hole and the fourth spray hole correspond to the first spray hole.

[0012] Preferably, the flow guiding assembly includes a connecting sleeve threaded into the fitting portion, and a plurality of evenly distributed spiral flow guiding plates are fixedly connected to the inner wall of the connecting sleeve, and a flow guiding cone is fixedly connected to the center connection of the plurality of spiral flow guiding plates.

[0013] Preferably, the connecting assembly includes a fixing ring fixed to the outer wall of the inner shell body and a plurality of connecting seats equally fixed to the outer wall of the outer shell body. The fixing ring has a first through hole evenly distributed, and each connecting seat has a second through hole. A sealing gasket is fixed at the lower part of the fixing ring and at the port of the outer shell body.

[0014] Preferably, a bolt is provided through each pair of the first and second through holes, and a nut is threaded to the bottom of each bolt, with the nut located below the connecting seat.

[0015] The advantages of this utility model are:

[0016] 1. This utility model divides the nozzle into an inner shell body and an outer shell body. The outer shell body protects the outside of the nozzle body and is made of tungsten alloy. This alloy has better high temperature resistance, wear resistance and corrosion resistance than stainless steel, thereby reducing the wear of the outer shell during use, increasing its service life and avoiding frequent nozzle replacements that would affect production efficiency.

[0017] 2. By dividing the nozzle body into an outer shell body and an inner shell body, even if the outer shell body needs to be replaced, only a part needs to be replaced, which saves production costs to a certain extent compared with the traditional method of replacing the entire nozzle.

[0018] 3. This utility model disperses and guides the high-pressure airflow under the guidance of multiple spiral guide plates, so that the airflow no longer concentrates on a specific part of the nozzle inner wall, but is distributed more evenly on the entire inner wall. In addition, when the airflow enters the buffer chamber, the expansion of the inner diameter causes the high-speed flowing medium to rapidly reduce its speed after entering the buffer chamber, thereby reducing the impact and wear on the inner wall of the inner shell body, and thus improving the overall service life of the nozzle. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the first three-dimensional structure in this embodiment;

[0021] Figure 2 This is an enlarged cross-sectional view of the main structure of the inner shell assembly and the outer shell assembly in this embodiment;

[0022] Figure 3 This is an enlarged cross-sectional view of the main structure of the inner shell assembly in this embodiment;

[0023] Figure 4 This is a cross-sectional enlarged schematic diagram of the main structure of the outer shell assembly in this embodiment.

[0024] In the diagram: 1. Inner shell assembly; 11. Inner shell body; 12. Threaded connection part No. 1; 13. Buffer cavity; 14. Injection hole No. 1; 15. Injection hole No. 2; 16. Limiting rib; 17. Fitting part;

[0025] 2. Outer shell assembly; 21. Outer shell body; 22. No. 3 injection hole; 23. No. 4 injection hole; 24. Limiting rib groove;

[0026] 3. Connecting components; 31. Retaining ring; 32. Through hole No. 1; 33. Connecting seat; 34. Through hole No. 2; 35. Bolt; 36. Nut; 37. Sealing washer;

[0027] 4. Flow guiding assembly; 41. Connecting sleeve; 42. Spiral guide plate; 43. Flow guiding cone. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] Example 1

[0030] Please see Figure 1-4 As shown, a hard alloy composite nozzle structure includes an inner shell assembly 1, an outer shell assembly 2 is provided on the outside of the inner shell assembly 1, a connecting assembly 3 for fastening the outer shell assembly 2 is provided on the outer wall of the inner shell assembly 1, and a flow guiding assembly 4 is provided in the upper port of the inner shell assembly 1.

[0031] The inner shell assembly 1 includes an inner shell body 11 made of stainless steel, and the outer shell assembly 2 includes an outer shell body 21 made of hard alloy, and the outer shell body 21 is fitted onto the outside of the spray end of the inner shell body 11.

[0032] The top of the inner shell body 11 is provided with a first threaded connection part 12 for connecting with external equipment. The inner side of the top opening of the inner shell body 11 partially expands outward to form a fitting part 17, and the flow guide component 4 is threadedly fitted into the fitting part 17.

[0033] The inner shell body 11 has a buffer cavity 13 located in the outer diameter expansion direction below the flow guide assembly 4.

[0034] The hard alloy used in the outer shell 21 may be made of tungsten alloy depending on the working conditions, in order to be suitable for high impact and high temperature scenarios.

[0035] The inner wall of the outer shell body 21 is provided with a limiting rib groove 24, and the outer wall of the inner shell body 11 is fixed with a limiting rib 16 that slides and engages with the limiting rib groove 24. The bottom end and the inclined surface of the inner shell body 11 are respectively provided with a first injection hole 14 and a second injection hole 15. The bottom end and the inclined surface of the outer shell body 21 are respectively provided with a third injection hole 22 and a fourth injection hole 23, and the third injection hole 22 and the fourth injection hole 23 are respectively corresponding to the first injection hole 14.

[0036] The flow guiding assembly 4 includes a connecting sleeve 41 threadedly connected to the fitting part 17. A plurality of evenly distributed spiral flow guiding plates 42 are fixedly connected to the inner wall of the connecting sleeve 41, and a flow guiding cone 43 is fixedly connected to the center connection of the plurality of spiral flow guiding plates 42.

[0037] The connecting assembly 3 includes a fixing ring 31 fixed to the outer wall of the inner shell body 11 and a plurality of connecting seats 33 equally fixed to the outer wall of the outer shell body 21. The fixing ring 31 has a first through hole 32 evenly distributed, and the connecting seats 33 each have a second through hole 34. A sealing gasket 37 is fixed at the lower part of the fixing ring 31 and at the port of the outer shell body 21.

[0038] A bolt 35 is provided between each pair of opposite through holes 32 and 34. The bottom end of each bolt 35 is threaded with a nut 36, and the nut 36 is located below the connecting seat 33.

[0039] During operation, although existing stainless steel nozzles have a certain degree of corrosion resistance, their hardness is insufficient to meet usage requirements. During production, high-pressure airflow carrying solid particles continuously scours the inner wall of the nozzle, causing accelerated nozzle wear. Furthermore, at the nozzle orifice, under the influence of pressure difference, the orifice is prone to enlargement due to wear and corrosion, resulting in reduced spray cleaning effect and affecting the nozzle's service life. In addition, frequent nozzle replacements can increase operating costs, and nozzle replacement requires machine downtime, thus affecting production efficiency. In this solution, the nozzle is divided into an inner shell body 11 and an outer shell body 21. The outer shell body 21 protects the nozzle body from the outside and is made of tungsten alloy. This alloy has better high-temperature resistance, wear resistance, and corrosion resistance than stainless steel, thereby reducing the wear of the outer shell during use, increasing its service life, and avoiding frequent nozzle replacements that affect production efficiency.

[0040] Furthermore, the nozzle body is divided into an outer shell body 21 and an inner shell body 11. Even if the outer shell body 21 needs to be replaced, only a part needs to be replaced. Compared with the traditional method of replacing the entire nozzle, this method saves production costs to a certain extent.

[0041] During installation, the connecting sleeve 41 is threaded into the fitting part 17, and the outer shell body 21 is fitted onto the outer side of the inner shell body 11. During installation, the limiting rib groove 24 is slidably fitted onto the outer side of the limiting rib 16 to achieve the limiting function, thereby preventing misalignment between the No. 3 spray hole 22, No. 4 spray hole 23 and the No. 1 spray hole 14, No. 2 spray hole 15, ensuring the normal use of the nozzle. Then, multiple bolts 35 are respectively inserted into the corresponding multiple No. 1 through holes 32 and No. 2 through holes 34, and multiple connecting seats 33 are fastened to the bottom of the fixing ring 31 using nuts 36. During the fastening process, the outer shell body 21 is used to squeeze the sealing gasket 37 to cause it to undergo plastic deformation, thereby achieving the sealing function.

[0042] In use, high-pressure airflow or gas enters through the top of the inner shell body 11. Under the guidance of multiple spiral guide plates 42, the high-pressure airflow is dispersed and guided, so that the airflow no longer concentrates on a specific part of the inner wall of the nozzle, but is distributed more evenly on the entire inner wall. In addition, when the airflow enters the buffer chamber 13, due to the expansion of the inner diameter, the speed of the high-speed flowing medium is rapidly reduced after entering the buffer chamber 13, so as to reduce the impact and wear on the inner wall of the inner shell body 11, thereby improving the service life of the nozzle as a whole.

[0043] This design effectively extends the lifespan of the nozzles and significantly improves their impact resistance, corrosion resistance, and high-temperature resistance compared to traditional stainless steel nozzle structures. It also reduces production costs and avoids frequent nozzle replacements that could impact production efficiency.

[0044] Example 2

[0045] Please see Figure 1-4 As shown, the hard alloy used in the outer shell 21 can be a composite alloy material with aluminum alloy as the base and silicon carbide particles added, depending on the working conditions. This can reduce the overall weight of the nozzle while ensuring its wear resistance, which is beneficial to reducing the energy consumption of the equipment.

[0046] During operation, the use of silicon carbide particles gives the composite material higher hardness and wear resistance. This metal matrix composite material reduces the overall weight of the nozzle while ensuring its wear resistance, which helps to reduce the energy consumption of the equipment. In some high-pressure pneumatic flow cleaning devices that require lightweight equipment, such as small mobile cleaning equipment, the use of this aluminum alloy-based silicon carbide particle reinforced composite material nozzle can not only meet the wear resistance requirements, but also improve the mobility and ease of operation of the equipment.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A cemented carbide composite nozzle structure, characterized in that: It includes an inner shell assembly (1), an outer shell assembly (2) is provided on the outside of the inner shell assembly (1), a connecting assembly (3) for fastening the outer shell assembly (2) is provided on the outer wall of the inner shell assembly (1), and a flow guiding assembly (4) is provided in the upper port of the inner shell assembly (1). The inner shell assembly (1) includes an inner shell body (11) made of stainless steel, and the outer shell assembly (2) includes an outer shell body (21) made of hard alloy, and the outer shell body (21) is fitted onto the outside of the spray end of the inner shell body (11). The top of the inner shell body (11) is provided with a first threaded connection part (12) for connecting with external equipment. The inner side of the opening at the top of the inner shell body (11) partially expands outward to form a fitting part (17), and the flow guide assembly (4) is threadedly fitted into the fitting part (17). The inner shell body (11) has a buffer cavity (13) that is provided in the outer diameter expansion direction below the flow guide assembly (4).

2. The cemented carbide composite nozzle structure according to claim 1, characterized in that: The hard alloy used in the outer shell body (21) can be made of tungsten alloy depending on the working conditions, so as to be suitable for high impact and high temperature scenarios.

3. The cemented carbide composite nozzle structure according to claim 1, characterized in that: The hard alloy used in the outer shell body (21) can be a composite alloy material with aluminum alloy as the base and silicon carbide particles added, depending on the working conditions. This can reduce the overall weight of the nozzle while ensuring the wear resistance of the nozzle, which is conducive to reducing the energy consumption of the equipment.

4. The cemented carbide composite nozzle structure according to claim 1, characterized in that: The inner wall of the outer shell body (21) is provided with a limiting rib groove (24), and the outer wall of the inner shell body (11) is fixed with a limiting rib (16) that slides and engages with the limiting rib groove (24). The bottom end and the inclined surface of the inner shell body (11) are respectively provided with a first injection hole (14) and a second injection hole (15). The bottom end and the inclined surface of the outer shell body (21) are respectively provided with a third injection hole (22) and a fourth injection hole (23), and the third injection hole (22) and the fourth injection hole (23) correspond to the first injection hole (14).

5. The cemented carbide composite nozzle structure according to claim 1, characterized in that: The flow guiding assembly (4) includes a connecting sleeve (41) threaded into the fitting part (17). A plurality of spiral flow guiding plates (42) are fixedly connected to the inner wall of the connecting sleeve (41), and a flow guiding cone (43) is fixedly connected to the center connection of the plurality of spiral flow guiding plates (42).

6. The cemented carbide composite nozzle structure according to claim 1, characterized in that: The connecting assembly (3) includes a fixing ring (31) fixed to the outer wall of the inner shell body (11) and a plurality of connecting seats (33) equally fixed to the outer wall of the outer shell body (21). The fixing ring (31) has a first through hole (32) evenly distributed, and the connecting seats (33) have a second through hole (34). A sealing gasket (37) is fixed at the lower part of the fixing ring (31) and directly opposite the port of the outer shell body (21).

7. The cemented carbide composite nozzle structure according to claim 6, characterized in that: A bolt (35) is provided between each pair of the first through hole (32) and the second through hole (34), and a nut (36) is threaded to the bottom end of each bolt (35), and the nut (36) is located below the connecting seat (33).

Images