CN-115739475-B - High-pressure jet water cleaning spray head rotating body

CN115739475BCN 115739475 BCN115739475 BCN 115739475BCN-115739475-B

Abstract

The invention discloses a high-pressure jet water cleaning spray head rotating body, which comprises a gland, a bearing body and a main shaft, wherein the gland is connected to the rear end of the bearing body in a sealing way, the main shaft is concentrically arranged in the bearing body, the rear end of the main shaft is rotatably connected with a runner of the gland in a sealing way, a speed reducing device is arranged between the bearing body and the main shaft, two ends of the bearing body are supported by a radial bearing A and a radial bearing B, sealing components are respectively arranged between the two ends of the main shaft and the gland and between the two ends of the bearing body, a thrust bearing is arranged between the radial bearings for supporting, the main shaft and the radial bearings are in clearance fit, the main shaft has a sliding trend, and the axial force of the main shaft is transmitted to the gland by the thrust bearing. The invention abandons the structural mode that the traditional thrust angular contact bearing is matched with the radial bearing to support, the radial bearing only bears radial force, and all axial force is transmitted to the bearing body through the thrust bearing, so that each bearing works under the optimal stress working condition, and the service life is greatly prolonged.

Inventors

CHEN SHIPING
ZHANG CHENGLIN
QU HONG

Assignees

贵阳宇虹清洗机械科技有限公司

Dates

Publication Date: 20260508
Application Date: 20221028

Claims (9)

1. The high-pressure jet water cleaning spray head rotating body is characterized by comprising a gland, a bearing body and a main shaft, wherein the gland is connected to the rear end of the bearing body in a sealing way, the main shaft is concentrically arranged in the bearing body, the rear end of the main shaft is in rotatable sealing connection with a runner of the gland, a speed reducing device is arranged between the bearing body and the main shaft, two ends of the bearing body are supported by a radial bearing A and a radial bearing B, sealing assemblies are respectively arranged between the two ends of the main shaft and the gland and between the two ends of the bearing body, a thrust bearing is arranged between the radial bearings to support, the main shaft and the radial bearings are in clearance fit, the main shaft has a slidable trend, and the axial force of the main shaft is transmitted to the gland by the thrust bearing.
2. The high-pressure jet water cleaning spray head rotating body according to claim 1, wherein the speed reducing device comprises a speed limiting wheel assembly and a copper ring, the speed limiting wheel assembly is fixed on the main shaft, the copper ring is concentrically fixed on the inner wall of the bearing body, and the speed limiting wheel assembly rotates around the copper ring.
3. The high-pressure jet water cleaning nozzle rotating body according to claim 2, wherein the speed limiting wheel assembly consists of a nest and a permanent magnet ring, the permanent magnet ring is sleeved in a nest clamping groove, the magnetic poles of the inner side and the outer side of permanent magnet blocks adjacent to the permanent magnet ring are opposite, and the permanent magnet blocks are bonded and fixed into a whole.
4. The high-pressure jet water cleaning nozzle rotating body according to claim 3, wherein filling blocks are additionally arranged between adjacent permanent magnetic blocks to realize different rotating speed requirements.
5. The high-pressure jet water cleaning spray head rotating body according to claim 3, wherein the main shaft is provided with push rings at the nested positions, corresponding thrust tables are arranged in a nested manner, the nested manner is tightly abutted against the radial bearing A, an outer baffle ring is arranged between the radial bearing A and the nested manner, the outer side of the radial bearing A is tightly abutted against a sealing component on the same side, and the sealing component is abutted against an end buckle of the bearing body.
6. The high-pressure jet water cleaning nozzle rotating body according to claim 4, wherein the gland and the bearing body are screwed together by screw threads.
7. The high-pressure jet water cleaning nozzle rotating body according to claim 5, wherein a clamping ring is arranged on the outer side of the main shaft positioned at the end buckle, and the clamping ring is fixed with the main shaft through bolts.
8. The high-pressure jet water cleaning nozzle rotating body according to claim 5, wherein a sealing sleeve is arranged on the inner wall of the runner of the gland, and the rear end of the main shaft is provided with a plug-in section which is inserted into the sealing sleeve.
9. The rotary body of the high-pressure jet water cleaning nozzle as claimed in claim 5, wherein the peripheral surface of the front end of the main shaft is provided with external threads and a sealing groove.

Description

High-pressure jet water cleaning spray head rotating body Technical Field The invention relates to a cleaning device part, in particular to a high-pressure jet water cleaning nozzle rotating body. Background In industrial cleaning, the inner wall of a pipeline such as a heat exchanger is generally required to be cleaned by adopting a rotary spray head, a rotating body of the rotary spray head is required to rotate due to the fact that an inner main shaft is required to rotate, so that bearing support is required to be carried out in the rotary spray head, the required water pressure in industrial cleaning can reach thousands of kilograms, a very large axial force can be formed after the water pressure acts on the end face of the main shaft, the conventional solution is that a radial bearing is adopted to support the inner wall of the pipeline, and two thrust angular contact bearings are adopted to support the inner wall of the pipeline. Disclosure of Invention The invention aims to solve the technical problem of providing a high-pressure jet water cleaning nozzle rotating body, so that the axial force and the radial force of a main shaft are reasonably dispersed and transmitted, the abrasion of a bearing is greatly reduced, and the service life of the device is prolonged. The technical scheme of the invention is as follows: The utility model provides a high-pressure jet water washs shower nozzle rotator, includes gland, bearing body and main shaft, gland sealing connection is at the rear end of bearing body, and the main shaft is installed in the bearing body with one heart, and rotatable sealing connection is carried out with the runner of gland to the main shaft rear end, install decelerator between bearing body and the main shaft, just the bearing body both ends are supported by radial bearing A and radial bearing B, and the main shaft both ends respectively with gland and bearing body between install seal assembly, install thrust bearing support between radial bearing, wherein main shaft and radial bearing clearance fit possess slidable trend, the axial force of main shaft is transmitted to the gland by thrust bearing. Further, the speed reducing device comprises a speed limiting wheel assembly and a copper ring, the speed limiting wheel assembly is fixed on the main shaft, the copper ring is concentrically fixed on the inner wall of the bearing body, and the speed limiting wheel assembly rotates around the copper ring. Furthermore, the speed limiting wheel assembly consists of a nest and a permanent magnet ring, wherein the permanent magnet ring is sleeved in a nest clamping groove, the magnetic poles of the inner side and the outer side of permanent magnets adjacent to the permanent magnet ring are opposite, and the permanent magnets are bonded and fixed into a whole. Furthermore, filling blocks are additionally arranged between the adjacent permanent magnet blocks so as to realize different rotating speed requirements. Further, a push ring is arranged at the position of the main shaft, a corresponding thrust platform is arranged in a nested manner, the nested manner is abutted against the radial bearing A, an outer baffle ring is arranged between the radial bearing A and the nested manner, the outer side of the radial bearing A is abutted against a sealing component on the same side, and the sealing component is abutted against an end buckle of the bearing body. Further, the gland and the bearing body are screwed by adopting threads. Furthermore, a clamping ring is arranged on the outer side of the main shaft, which is positioned at the end buckle, and the clamping ring is fixed with the main shaft through a bolt. Furthermore, a sealing sleeve is arranged on the inner wall of the runner of the gland, the rear end of the main shaft is provided with a plug-in section, and the plug-in section is inserted into the sealing sleeve. Further, the peripheral surface of the front end of the main shaft is provided with external threads and a sealing groove. The invention has the advantages that: The invention is used for connecting a pipeline and a rotary spray head in a high-pressure jet water cleaning device, and the recoil torque of the spray head can act on a main shaft, so that the main shaft drives the spray head to rotate together at a high speed to execute a flushing action. Because the water pressure is very high (the pressure value can reach thousands of kilograms), even if the section of the rear end face of the main shaft is very small, very large axial thrust can still be formed on the main shaft, but the structural mode that the traditional angular contact thrust bearing is matched with the radial bearing for supporting is abandoned, the main shaft is in clearance fit with the radial bearing, the main shaft and the radial bearing have a sliding trend (in practice, the main shaft and the bearing body cannot practically displace because the thrust bearing is propped against the main shaft), all axia