Pump head structure of circulating pump in grinding barrel and method for prolonging service life of threads of pump head structure

Abstract

The invention relates to a pump head structure of a circulating pump in a grinding barrel and a method for prolonging the service life of a thread of the pump head structure, and belongs to the technical field of use of pump heads of grinding barrels, the pump head structure comprises a pump head shaft, and a screw is arranged at the front end of the pump head shaft. The pump head shaft comprises a rotating shaft, a shaft cap fixedly connected with the rotating shaft in a threaded mode is arranged between the rotating shaft and the screw, the shaft cap is connected with the screw in an inserted and threaded mode in a sleeved mode, and a locking nut fixedly connected with the screw in a threaded mode in a sleeved mode is arranged at the front end of the shaft cap. The method has the advantages of convenient operation and good operation stability. The problem that the circulating pump cannot operate normally after pump head threads are abraded is solved. The service life of the circulating pump is prolonged, cost is saved, and meanwhile production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of use of grinding barrel pump heads, and in particular to a pump head structure of a circulation pump in a grinding barrel and a method for extending the life of its threads. Background Art

[0002] The impeller is fixed by screws at the pump head to achieve the purpose of circulating the grinding fluid. However, long-term operation of the circulating pump will cause serious wear of the bottom thread. Since the pump head and the shaft are connected, the entire circulating pump cannot operate normally after the thread is worn. Summary of the invention

[0003] The present invention mainly solves the deficiencies in the prior art and provides a pump head structure of a circulating pump in a grinding barrel and a method for extending the life of its threads, which has the advantages of convenient operation and good running stability. The problem that the circulating pump cannot operate normally after the pump head threads are worn is solved. The service life of the circulating pump is extended and costs are saved, while the production efficiency is improved.

[0004] The above technical problems of the present invention are mainly solved by the following technical solutions: A pump head structure of a circulating pump in a grinding barrel, comprising a pump head shaft, wherein a screw is arranged at the front end of the pump head shaft. The pump head shaft comprises a rotating shaft, wherein a shaft cap is arranged between the rotating shaft and the screw and is threadedly sleeved and fixed to the rotating shaft, wherein the shaft cap is threadedly sleeved with the screw in an insert-type manner, and a locking nut is arranged at the front end of the shaft cap and is threadedly sleeved and fixed to the screw.

[0005] Preferably, a plurality of springs are provided between the screw and the rotating shaft, and a pressure plate is provided between the spring and the screw.

[0006] Preferably, the lower part of the spring is provided with a guide column which is integrated with the rotating shaft and plugged into the spring.

[0007] Preferably, the screw rod comprises a limit seat, an impeller stud is provided at the front end of the limit seat, and an assembly stud which is threadedly sleeved and fixed with a shaft cap and a locking nut is provided between the impeller stud and the limit seat.

[0008] Preferably, a transition rod is provided between the impeller stud and the assembly stud, the diameter of the transition rod is larger than the diameter of the impeller stud, and the diameter of the transition rod is smaller than the diameter of the assembly stud.

[0009] Preferably, a sealing ring is provided between the outer ring of the shaft cap and the outer ring of the rotating shaft.

[0010] The method for extending the thread life of the pump head structure of the circulation pump in the grinding barrel includes the following steps: Step 1: Install the screw into the shaft cap and assemble the locking nut for initial pre-tightening.

[0011] Step 2: Prepare a pressure plate with a spring at the front end of the shaft and insert the spring into the guide post.

[0012] Step 3: The shaft cap is connected to the rotating shaft and screwed in place, and the screw is further pre-tightened by a spring.

[0013] Step 4: Adjust the locking nut to make the screw and the shaft cap tight, and install the sealing ring at the same time.

[0014] The screw and the pump head shaft adopt a split structure. When the thread on the screw is worn, the thread life can be extended by replacing the screw.

[0015] Preferably, when the screw and the pump head shaft are an integrated structure, when the threads on the screw are worn during use, the screw is cut off, the front end plane of the pump head shaft is polished, and a screw of the same material is used for welding using argon arc welding.

[0016] Preferably, the length of the replaced screw is not less than the original thread length. When the replaced screw is too long, the excess is cut off by a cutting machine and polished to make it smooth.

[0017] The present invention can achieve the following effects: The present invention provides a pump head structure of a circulating pump in a grinding barrel and a method for extending the life of its threads. Compared with the prior art, the structure has the advantages of convenient operation and good running stability. The problem that the circulating pump cannot operate normally after the pump head threads are worn is solved. The service life of the circulating pump is extended, the cost is saved, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a structural cross-sectional view of the present invention.

[0020] Figure 3 It is a structural schematic diagram of the screw of the present invention.

[0021] In the figure: screw 1, pump head shaft 2, locking nut 3, shaft cap 4, pressure plate 5, sealing ring 6, rotating shaft 7, guide column 8, spring 9, impeller stud 10, transition rod 11, assembly stud 12, limit seat 13. DETAILED DESCRIPTION

[0022] The technical solution of the invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0023] Example 1: Figure 1 , Figure 2 and Figure 3As shown, a pump head structure of a circulation pump in a grinding barrel includes a pump head shaft 2, and a screw 1 is provided at the front end of the pump head shaft 2. The pump head shaft 2 includes a rotating shaft 7, and a shaft cap 4 is provided between the rotating shaft 7 and the screw 1, and a sealing ring 6 is provided between the outer ring of the shaft cap 4 and the outer ring of the rotating shaft 7. The shaft cap 4 is plug-in threadedly sleeved with the screw 1, and a locking nut 3 is provided at the front end of the shaft cap 4, which is threadedly sleeved and fixed with the screw 1. Seven springs 9 are provided between the screw 1 and the rotating shaft 7, and a pressure plate 5 is provided between the spring 9 and the screw 1. The lower part of the spring 9 is provided with a guide column 8 that is integrated with the rotating shaft 7 and plugged with the spring 9.

[0024] The screw 1 includes a limiting seat 13, an impeller stud 10 is provided at the front end of the limiting seat 13, and an assembly stud 12 is provided between the impeller stud 10 and the limiting seat 13, which is threadedly sleeved and fixed with the shaft cap 4 and the locking nut 3. A transition rod 11 is provided between the impeller stud 10 and the assembly stud 12, and the diameter of the transition rod 11 is larger than the diameter of the impeller stud 10, and the diameter of the transition rod 11 is smaller than the diameter of the assembly stud 12.

[0025] A method for extending the life of a thread of a pump head structure of a circulating pump in a grinding barrel, comprising the following steps: Step 1: Install the screw 1 into the shaft cap 4 and assemble the locking nut 3 for preliminary pre-tightening.

[0026] Step 2: Prepare a pressure plate 5 with a spring 9 at the front end of the rotating shaft 7, and insert the spring 9 into the guide post 8.

[0027] Step 3: The shaft cap 4 is docked with the rotating shaft 7 and screwed and fixed, and the screw 1 is further pre-tightened by the spring 9.

[0028] Step 4: Adjust the locking nut 3 to tighten the screw 1 and the shaft cap 4, and assemble the sealing ring 6 at the same time.

[0029] The screw 1 and the pump head shaft 2 adopt a split structure. When the thread on the screw 1 is worn, the life of the thread can be extended by replacing the screw 1.

[0030] Example 2: Figure 1 As shown, a pump head structure of a circulating pump in a grinding barrel includes a pump head shaft 2, and a screw 1 is provided at the front end of the pump head shaft 2. When the screw 1 and the pump head shaft 2 are an integrated structure, when the screw 1 is used, after the thread on the screw 1 is worn, the screw 1 is cut off, and the front end plane of the pump head shaft 2 is polished, and the screw 1 of the same material is welded by argon arc welding. The length of the replaced screw 1 is not less than the original thread length. When the length of the replaced screw 1 is too long, the excess is cut off by a cutting machine and polished flat.

[0031] In summary, the pump head structure of the circulating pump in the grinding barrel and the method for extending the life of the thread thereof have the advantages of convenient operation and good operation stability. The problem that the circulating pump cannot operate normally after the pump head thread is worn is solved. The service life of the circulating pump is extended and the cost is saved, while the production efficiency is improved.

[0032] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A pump head structure for a circulating pump in a grinding barrel, characterized in that: The pump head shaft (2) comprises a pump head shaft (2), wherein a screw (1) is provided at the front end of the pump head shaft (2); the pump head shaft (2) comprises a rotating shaft (7), wherein a shaft cap (4) is provided between the rotating shaft (7) and the screw (1) and is threadedly sleeved and fixed to the rotating shaft (7); the shaft cap (4) is threadedly sleeved and plugged with the screw (1); and a locking nut (3) is provided at the front end of the shaft cap (4) and is threadedly sleeved and fixed to the screw (1).

2. The pump head structure of the internal circulation pump of the grinding barrel according to claim 1 is characterized in that: A plurality of springs (9) are provided between the screw rod (1) and the rotating shaft (7), and a pressure plate (5) is provided between the spring (9) and the screw rod (1).

3. The pump head structure of the internal circulation pump of the grinding barrel according to claim 2 is characterized in that: The lower part of the spring (9) is provided with a guide column (8) which is integrated with the rotating shaft (7) and plugged into the spring (9).

4. The pump head structure of the inner circulation pump of the grinding barrel according to claim 1 or 2, characterized in that: The screw rod (1) comprises a limit seat (13), the front end of which is provided with an impeller stud (10), and an assembly stud (12) threadedly sleeved and fixed with a shaft cap (4) and a locking nut (3) is provided between the impeller stud (10) and the limit seat (13).

5. The pump head structure of the internal circulation pump of the grinding barrel according to claim 4, characterized in that: A transition rod (11) is provided between the impeller stud (10) and the assembly stud (12); the diameter of the transition rod (11) is greater than the diameter of the impeller stud (10), and the diameter of the transition rod (11) is smaller than the diameter of the assembly stud (12).

6. The pump head structure of the internal circulation pump of the grinding barrel according to claim 1, characterized in that: A sealing ring (6) is provided between the outer ring of the shaft cap (4) and the outer ring of the rotating shaft (7).

7. A method for extending the life of the thread of the pump head structure of the internal circulation pump of the grinding barrel according to claim 3, characterized in that The steps are as follows: Step 1: Install the screw (1) into the shaft cap (4) and assemble the locking nut (3) for preliminary pre-tightening; Step 2: Prepare a pressure plate (5) with a spring (9) at the front end of the rotating shaft (7), and insert the spring (9) into the guide post (8); Step 3: The shaft cap (4) is butt-jointed with the rotating shaft (7) and screwed in place, and the screw rod (1) is further pre-tightened by the spring (9); Step 4: Adjust the locking nut (3) to tighten the screw (1) and the shaft cap (4), and install the sealing ring (6); The screw rod (1) and the pump head shaft (2) are of a split structure. When the threads on the screw rod (1) are worn, the life of the threads can be extended by replacing the screw rod (1).

8. The method for extending the life of the thread of the pump head structure of the internal circulation pump of the grinding barrel according to claim 7, characterized in that: When the screw (1) and the pump head shaft (2) are an integrated structure, when the screw (1) is used, the threads on the screw (1) are worn, the screw (1) is cut off, the front end plane of the pump head shaft (2) is polished, and the screw (1) of the same material is welded by argon arc welding.

9. The method for extending the life of the thread of the pump head structure of the internal circulation pump of the grinding barrel according to claim 8, characterized in that: The length of the replaced screw rod (1) is not less than the original thread length. When the replaced screw rod (1) is too long, the excess is cut off by a cutting machine and then polished to make it smooth.

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