Novel stable lock structure of balance disc device

Abstract

The utility model relates to a novel balance disc device stable locking structure which comprises a balance ring, a balance disc, a balance disc locking nut and the like. A balance sleeve and a balance ring are arranged between the discharging section and the balance disc in the axial direction and the radial direction respectively, the balance disc is arranged on the shaft in a sleeved mode, pushed in in the axial direction and abuts against the balance ring, an annular ring is arranged between the discharging section and the balance disc, the balance sleeve is fixed in the annular ring between the balance disc and the discharging section, and an annular groove is formed in the combined face of the balance disc and the shaft. An adjusting ring is arranged in the annular groove; a positioning ring groove and a threaded section are arranged on the shaft face, the balance disc locking nut is arranged on the shaft in a sleeved mode and pushed to the threaded section, the balance disc locking nut is screwed down to enable the positioning ring to abut against the end face of the balance disc, and the shaft seal is pushed to the end face of the balance disc locking nut on the shaft. According to the utility model, the situation that the balance disc nut and the shaft sleeve nut are loosened due to frequent start and stop, reverse rotation, vibration and the like of the water pump can be avoided, so that the operation safety and reliability of the pump are improved.

Description

Technical Field

[0001] This utility model relates to a locking structure, specifically a novel locking structure for a balance disc device that can prevent the balance disc nut and shaft sleeve nut from loosening due to frequent start-stop, reverse rotation, vibration, or other reasons, thereby increasing the operational safety and reliability of the pump. Background Technology

[0002] Traditional balance discs use key drive; a schematic diagram of the bushing clamping structure can be found here. Figure 1 From the structural diagram Figure 1 As can be seen, the traditional balance disc uses a key drive and bushing clamping structure, which is a simple transmission structure. The balance disc is tightened by the key on the pump shaft and the bushing nut to lock the balance disc, bushing, etc.

[0003] In the actual design process of the product, this simple balance disc locking structure is often used in some less critical areas to reduce design and production costs, while also facilitating equipment maintenance. However, in actual operation at the user's site, the water pump may frequently start and stop, or the outlet pipe valve may not close in time when the pump stops, causing liquid backflow and rotor reversal. Pump vibration and other factors can easily cause the shaft end sleeve nut to loosen, thus creating safety hazards during equipment operation. Utility Model Content

[0004] To address the aforementioned problems, the main objective of this utility model is to provide a novel balance disc device locking structure that can prevent the balance disc nut and shaft sleeve nut from loosening due to frequent start-stop, reverse rotation, or vibration of the water pump, thereby increasing the operational safety and reliability of the pump.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution: a novel balancing disc device locking structure, the novel balancing disc device locking structure comprising: a balancing ring, a balancing disc, a balancing disc locking nut, a positioning ring, and a shaft seal.

[0006] The balance ring and balance disc are both located inside the cavity of the discharge section.

[0007] A balance sleeve is axially arranged between the discharge section and the balance disc, and a balance ring is radially arranged between the discharge section and the balance disc. The balance disc is sleeved on the shaft, pushed in axially and pressed against the balance ring. An annular ring is arranged between the discharge section and the balance disc. The balance sleeve is fixed in the annular ring between the balance disc and the discharge section. An annular groove is provided on the surface where the balance disc meets the shaft, and an adjustment ring is provided in the annular groove.

[0008] A positioning ring groove and a threaded section are provided on the shaft surface near the annular groove. Two positioning rings composed of half rings are radially placed in the positioning ring groove.

[0009] The balance disc locking nut is placed on the shaft and pushed to the threaded section. Tighten the balance disc locking nut to place the positioning ring against the end face of the balance disc. The shaft seal is then pushed onto the end face of the balance disc locking nut.

[0010] In a specific embodiment of this utility model, both the balance sleeve and the balance ring are fixed to the ejection section with screws.

[0011] In a specific embodiment of this utility model, the shaft seal is a packing shaft seal or a mechanical shaft seal.

[0012] In a specific embodiment of this utility model, the balance disc locking nut is fixed to the balance disc by a set screw.

[0013] The positive and progressive effects of this utility model are as follows: Compared with common technologies, the novel balance disc locking structure provided by this utility model has the following advantages: Compared with the traditional balance disc locking structure, this utility model, while inheriting the advantages of the traditional locking structure, makes the locking function more comprehensive. After the balance disc nut is tightened, it is then locked onto the pump shaft using key drive by the set screw, which is simple and easy. Furthermore, the tightening of the shaft sleeve nut at the shaft end further effectively locks it onto the balance disc nut, making the locking of the rotor parts on the shaft more reliable. This structural design on the rotor components can prevent the balance disc nut and shaft sleeve nut from loosening due to frequent start-stop, reverse rotation, vibration, etc., thereby increasing the operational safety and reliability of the pump. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of commonly used technologies.

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0016] The following are the names corresponding to the reference numerals in this utility model:

[0017] Discharge section 1, balance ring 2, balance sleeve 3, balance disc 4, adjusting ring 5, set screw 6, positioning ring 7, balance disc locking nut 8, shaft seal 9, annular ring 301, annular groove 501, positioning ring groove 701, threaded section 801, packing shaft seal 901, mechanical seal shaft seal 902. Detailed Implementation

[0018] The preferred embodiments of this utility model are given below with reference to the accompanying drawings to illustrate the technical solution of this utility model in detail.

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention, as shown below. Figure 2As shown, this utility model proposes a novel stabilizing structure for a balance disc device. This novel stabilizing structure includes: a balance ring 2, a balance disc 4, a balance disc locking nut 8, a positioning ring 7, and a shaft seal 9. Both the balance ring 2 and the balance disc 4 are disposed within the cavity of the discharge section 1. A balance sleeve 3 is axially disposed between the discharge section 1 and the balance disc 4, and a balance ring 2 is radially disposed between the discharge section 1 and the balance disc 4. The balance disc 4 is fitted onto the shaft, pushed axially, and pressed tightly against the balance ring 2. An annular ring 301 is disposed between the discharge section 1 and the balance disc 4. The balance sleeve 3 is fixed within the annular ring between the balance disc 4 and the discharge section 1. An annular groove 501 is provided on the surface of the balance disc 4 that engages with the shaft, and an adjusting ring 5 is disposed within the annular groove 501. A positioning ring groove 701 and a threaded section 801 are provided on the shaft surface near the annular groove 501. Two positioning rings 7, composed of semi-rings, are radially inserted into the positioning ring groove 701.

[0020] The balance disc locking nut 8 is pushed onto the shaft to the threaded section 801. Tightening the balance disc locking nut 8 puts the positioning ring 7 against the end face of the balance disc 4. The shaft seal 9 is pushed onto the end face of the balance disc locking nut on the shaft.

[0021] The shaft seal 9 is pushed onto the shaft to the end face of the balance disc locking nut. After the bearing retainer, bearing body and bearing bushing are installed in sequence, it is finally fastened to the rotor with the shaft end nut, thus completing the overall assembly of the pump.

[0022] In the specific implementation process, both the balance sleeve 3 and the balance ring 2 in this utility model are fixed to the ejection section 1 with screws.

[0023] In specific implementation, the shaft seal 9 in this utility model is either a packing shaft seal 901 or a mechanical seal shaft seal 902.

[0024] In the specific implementation process, the balance disc locking nut 8 in this utility model is fixed to the balance disc 4 by a set screw 6.

[0025] This utility model features an improved balance disc locking structure design. Compared to traditional balance disc locking structures, it retains the advantages of traditional locking structures while offering more comprehensive locking functionality. After the balance disc nut is tightened, it is then secured to the key-driven pump shaft using a set screw, a simple and easy process. The tightening of the shaft sleeve nut at the shaft end further secures the balance disc nut, making the rotor components more reliably locked on the shaft. This structural design on the rotor components prevents the balance disc nut and shaft sleeve nut from loosening due to frequent start-stop, reverse rotation, or vibration, thereby increasing the pump's operational safety and reliability.

[0026] In actual operation at user sites, water pumps may frequently start and stop, or even reverse, which can easily cause the shaft sleeve nut to loosen. This new multi-stage pump balance disc locking structure improvement design, while inheriting the advantages of the traditional balance disc locking structure, locks the balance disc nut onto the balance disc with a set screw, thereby avoiding the safety hazards caused by the loosening of the shaft sleeve nut and greatly enhancing the pump's operational safety and reliability.

[0027] This invention prevents the shaft end bushing nut from loosening or even failing due to frequent start-stop, reverse rotation, or vibration of the water pump, and effectively protects the safe and stable operation of the equipment by avoiding frequent changes in the axial force of the pump.

[0028] 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 protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A novel stabilizing structure for a balancing disc device, characterized in that: The novel balance disc device locking structure includes: a balance ring, a balance disc, a balance disc locking nut, a positioning ring, and a shaft seal; The balance ring and balance disc are both located inside the cavity of the discharge section; A balance sleeve is axially arranged between the discharge section and the balance disc, and a balance ring is radially arranged between the discharge section and the balance disc. The balance disc is sleeved on the shaft, pushed in axially and pressed against the balance ring. An annular ring is arranged between the discharge section and the balance disc. The balance sleeve is fixed in the annular ring between the balance disc and the discharge section. An annular groove is provided on the surface where the balance disc meets the shaft. An adjustment ring is provided in the annular groove. A positioning ring groove and a threaded section are provided on the shaft surface near the annular groove. Two positioning rings composed of half rings are radially placed in the positioning ring groove. The balance disc locking nut is placed on the shaft and pushed to the threaded section. Tighten the balance disc locking nut to place the positioning ring against the end face of the balance disc. The shaft seal is then pushed onto the end face of the balance disc locking nut.

2. The novel stabilizing structure of the balance disc device according to claim 1, characterized in that: Both the balance sleeve and the balance ring are fixed to the discharge section with screws.

3. The novel stabilizing structure of the balance disc device according to claim 1, characterized in that: The shaft seal is either a packing shaft seal or a mechanical shaft seal.

4. The novel stabilizing structure of the balance disc device according to claim 1, characterized in that: The balance disc locking nut is fixed to the balance disc by a set screw.

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