Jet nozzle in pressure liquid flow device

Abstract

The utility model discloses a jet flow nozzle in a pressure liquid flow device, which comprises a jet flow end part of a communicating pipe with a liquid flow pipe hole, a wear-resistant sleeve and a nozzle core with a jet flow hole, the wear-resistant sleeve and the nozzle core are detachably arranged at the jet flow end part of the communicating pipe, and when the jet flow nozzle is used, the peripheral surface of the wear-resistant sleeve is attached to a wire-drawing die needing to rotate. And the outer peripheral surface of the wear-resistant sleeve is a conical outer conical surface 1. The wear-resisting sleeve is an annular body, an inner hole of the wear-resisting sleeve is a conical inner hole, the periphery of the end portion of the jet flow end of the communicating pipe is a second conical outer conical face matched with the conical inner hole of the wear-resisting sleeve, and the wear-resisting sleeve is detachably arranged on the second outer conical face of the end portion of the jet flow end in a sleeved mode. The jet flow nozzle has the advantages that the wear-resistant sleeve and the nozzle core can be detached and replaced, and all components do not need to be abandoned when one component cannot be continuously used, so that the service life of the jet flow nozzle can be prolonged; the structure is simple and dismounting is convenient.

Description

Technical Field

[0001] This utility model relates to a jet nozzle in a pressure fluid flow device, belonging to the field of wire drawing die processing technology. Background Technology

[0002] Wire drawing dies are used to draw or extrude metal wire products that meet specifications and shapes. The smoothness of the drawing hole directly affects the pass rate of the metal wire products. Generally, the diameter of the drawing hole in a wire drawing die is very small, only 4-6mm, and the length of the hole is about 15-20mm. The processing technology usually involves first pressing a drawing hole slightly smaller than the specified specification onto the wire drawing die, and then grinding the round hole. Because the diameter of the drawing hole is too small, it is very easy for the mandrel to break and block the hole when using the mandrel insertion method. Currently, micro-beam laser grinding is generally used, but the operation precision requirements are too high. Even a slight deviation will cause the inner wall shape of the drawing hole to change and exceed the specified inner diameter, thus rendering the entire wire drawing die unusable.

[0003] To address the aforementioned issues, our company has invented a grinding and polishing method for the drawing hole of a wire drawing die. A key problem addressed by this method is that a non-sealed flow channel must be pressurized to form a columnar jet of microparticle liquid, without allowing leakage of the microparticle liquid. This non-sealed flow channel consists of a section temporarily constructed by pressing together a jet channel, a return channel, and the drawing hole of the wire drawing die. The drawing hole of the wire drawing die is located between the jet channel and the return channel. Under operating conditions, the wire drawing die needs to rotate at high speed around the axis of the drawing hole. Therefore, it is impossible to achieve a fixed seal between the drawing hole and the jet channel, or between the drawing hole and the return channel. This involves a pressure fluid flow device developed by our company, which has two jet nozzles that spray columnar jets. In application, the two nozzles need to be pressed against both ends of the wire drawing die, so that the jet holes of the two nozzles can temporarily form a non-sealed coaxial pressure flow channel with the drawing hole. Here, the wire drawing die needs to rotate at high speed, which causes continuous friction between the die and the nozzle under pressure during operation, resulting in wear at the contact points. This wear is temporary for the die, ending after processing, but for the nozzle, it is repeated and prolonged, significantly shortening its lifespan.

[0004] In addition, the grinding and polishing method for the drawing hole of the drawing die invented by our company also involves the wear resistance of the jet hole of the jet nozzle. When the jet nozzle ejects jets and grinds the drawing hole, the inner wall of the jet hole will also be worn. Therefore, the component with the jet hole in the jet nozzle should not only consider the material, but also the replaceability. Utility Model Content

[0005] The technical problem to be solved by this invention is: how to extend the service life of the jet nozzle.

[0006] To address the above problems, the technical solution proposed by this utility model is as follows:

[0007] A jet nozzle in a pressure fluid flow device includes a jet end of a connecting pipe with a fluid flow orifice, a wear-resistant sleeve, and a nozzle core with a jet orifice. The wear-resistant sleeve and the nozzle core are detachably installed at the jet end of the connecting pipe. In application, the outer circumferential surface of the wear-resistant sleeve is pressed against the wire drawing die that needs to be rotated.

[0008] The outer circumferential surface of the wear-resistant sleeve is a conical outer cone surface.

[0009] The wear-resistant sleeve is an annular body with a conical inner hole. The outer periphery of the jet end of the connecting pipe is a conical outer surface II that matches the conical inner hole of the wear-resistant sleeve. The wear-resistant sleeve is detachably fitted onto the outer conical surface II of the jet end.

[0010] The nozzle core has a mounting flange at its rear end, and a threadless screw hole is provided on the outer periphery of the mounting flange. The end face of the jet end of the connecting pipe is provided with a threaded screw hole corresponding to the threadless screw hole. During assembly, the nozzle core and the wear-resistant sleeve are fixed to the jet end with screws.

[0011] The rear end face of the assembled nozzle core has a gap with the jet end. The rear end face of the nozzle core is pressed against the front end face of the wear-resistant sleeve by the preload of the screw.

[0012] The inner wall of the tapered inner hole of the wear-resistant sleeve is a vulcanized and bonded rubber wall.

[0013] The wear-resistant sleeve is made of a self-lubricating wear-resistant material.

[0014] Beneficial effects:

[0015] Both the wear-resistant sleeve and the nozzle core can be removed and replaced, eliminating the need to discard all components when one part becomes unusable, thus extending the service life of the jet nozzle; the structure is simple and easy to assemble and disassemble. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of the jet nozzle;

[0017] Figure 2 This is a schematic diagram showing the disassembly of the jet nozzle;

[0018] Figure 3 A cross-sectional schematic diagram showing the jet nozzle and the wire drawing die being clamped together and pressed against each other;

[0019] Figure 4 for Figure 3 A partial schematic diagram.

[0020] In the diagram: 1. Connecting pipe; 11. Liquid flow pipe hole; 12. Jet end; 121. Outer conical surface two; 122. Threaded screw hole; 2. Wear-resistant sleeve; 21. Conical inner hole; 211. Outer conical surface one; 212. Rubber wall; 3. Nozzle core; 31. Jet hole; 32. Mounting flange; 321. Threadless screw hole; 4. Wire drawing die; 41. Wire drawing hole; 411. Inner conical surface; 5. Screw; 6. Compression spring. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0022] Example 1

[0023] like Figure 1 As shown in Figure 4, a jet nozzle in a pressure fluid flow device includes a jet end 12 of a connecting pipe 1 with a fluid flow port 11, a wear-resistant sleeve 2, and a nozzle core 3 with a jet hole 31. The wear-resistant sleeve 2 and the nozzle core 3 are detachably installed on the jet end 12 of the connecting pipe 1. In application, the outer circumferential surface of the wear-resistant sleeve 2 is pressed against the wire drawing die 4 that needs to be rotated. In this way, when the wear-resistant sleeve 2 can no longer be used due to repeated wear over a long period of time, it can be removed and replaced. Similarly, when the jet hole 31 of the nozzle core 3 becomes enlarged due to long-term scouring and friction of the microparticle liquid and can no longer be used, it can also be removed and replaced. This can extend the service life of the jet nozzle and avoid discarding all components when one component can no longer be used.

[0024] To reduce the frictional resistance between the wear-resistant sleeve 2 and the rotating wire drawing die 4 and to enhance the wear resistance of the wear-resistant sleeve 2, the wear-resistant sleeve 2 is made of a self-lubricating wear-resistant material.

[0025] Similarly, to improve the erosion resistance of the jet hole 31 of the nozzle 3, the nozzle is made of a wear-resistant material that is harder than that of the wire drawing die.

[0026] like Figure 3 , 4 As shown, the outer circumferential surface of the wear-resistant sleeve 2 is a conical outer conical surface 211. The drawing hole 41 of the wire drawing die 4, which is in contact with the nozzle, is also modified into a conical hole shape, giving it an inner conical surface 411 that mates with the outer conical surface 211. This fit between the outer conical surface 211 and the inner conical surface 411 allows the pressure applied to the connecting pipe 1 by the compression spring 6 on the fixture to maintain a tight fit between the outer conical surface 211 and the inner conical surface 411 even after wear occurs between them.

[0027] like Figure 1 , 2As shown, the wear-resistant sleeve 2 is an annular body with a conical inner hole 21. The outer periphery of the jet end 12 of the connecting pipe 1 is a conical outer conical surface 121 that mates with the conical inner hole 21 of the wear-resistant sleeve 2. The wear-resistant sleeve 2 is detachably fitted onto the outer conical surface 121 of the jet end 12. Furthermore, the rear end of the nozzle core 3 has a mounting flange 32, and the outer periphery of the mounting flange 32 has a threadless screw hole 321. The end face of the jet end 12 of the connecting pipe 1 is provided with a threaded screw hole 122 corresponding to the threadless screw hole 321. During assembly, the nozzle core 3 and the wear-resistant sleeve 2 are fixed to the jet end 12 using screws 5.

[0028] The rear end face of the assembled nozzle core 3 has a gap with the jet end 12. The rear end face of the nozzle core 3 is pressed against the front end face of the wear-resistant sleeve 2 by the pre-tightening force of the screw 5. The installation method described above is as follows: first, the wear-resistant sleeve 2 is placed on the jet end 12, then the rear end face of the nozzle core 3 is pressed against the front end face of the wear-resistant sleeve 2, and the screw 5 is passed through the threadless screw hole 321 on the mounting flange 32 and screwed into the threaded screw hole 122 on the jet end 12 to fix the nozzle core 3, and press the wear-resistant sleeve 2 more tightly onto the outer conical surface 121 of the jet end 12, thus achieving a fast installation of the nozzle core 3 and the wear-resistant sleeve 2 in one go.

[0029] Example 2

[0030] like Figure 2 As shown, the difference between this embodiment and the first embodiment is that, in order to prevent the wear-resistant sleeve 2 from rotating on the outer conical surface 121 of the jet end 12 of the connecting pipe 1, the inner wall of the conical inner hole 21 of the wear-resistant sleeve 2 is a vulcanized and bonded rubber wall 212, thereby increasing the frictional resistance between the wear-resistant sleeve 2 and the outer conical surface 121.

[0031] The above embodiments are only used to illustrate the present invention and cannot be used to limit the scope of protection covered by the present invention. Any improvements or modifications made by any person without departing from the principle of the present invention should be considered to fall within the scope of protection of the present invention.

Claims

1. A fluidic nozzle in a pressure flow device, characterized by: The jet end (12) of the communication pipe (1) with the jet pipe hole (11), the wear-resistant sleeve (2) and the nozzle core (3) with the jet hole (31), the wear-resistant sleeve (2) and the nozzle core (3) are detachably installed on the jet end (12) of the communication pipe (1), and the outer peripheral surface of the wear-resistant sleeve (2) is in contact with the wire drawing die (4) which needs to be rotated.

2. Fluidic nozzle in a pressure fluid flow device according to claim 1, characterized in that The outer peripheral surface of the wear-resistant sleeve (2) is a conical outer surface (211).

3. The fluidic nozzle in a pressure fluid flow device of claim 2, wherein: The wear-resistant sleeve (2) is an annular body, and the inner hole thereof is a conical inner hole (21); the outer peripheral surface of the jet end (12) of the communication pipe (1) is a conical outer surface (121) matched with the conical inner hole (21) of the wear-resistant sleeve (2); and the wear-resistant sleeve (2) is detachably sleeved on the conical outer surface (121) of the jet end (12).

4. The fluidic nozzle in a pressure fluid flow device of claim 3, wherein: The rear end of the nozzle core (3) is provided with a mounting flange (32), and the outer peripheral surface of the mounting flange (32) is provided with a non-threaded screw hole (321); the end surface of the jet end (12) of the communication pipe (1) is provided with a threaded screw hole (122) corresponding to the non-threaded screw hole (321); and the nozzle core (3) and the wear-resistant sleeve (2) are fixed on the jet end (12) by means of a screw (5) during assembly.

5. Fluidic nozzle in a pressure fluid flow device according to claim 4, characterized in that: The rear end surface of the nozzle core (3) is in contact with the front end surface of the wear-resistant sleeve (2) through the pre-tightening force of the screw (5).

6. The fluidic nozzle in a pressure fluid flow device of claim 3, wherein: The inner wall of the conical inner hole (21) of the wear-resistant sleeve (2) is a vulcanized rubber wall (212).

7. The fluidic nozzle in a pressure fluid flow device of claim 3, wherein: The wear-resistant sleeve (2) is made of self-lubricating wear-resistant material.

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