High-speed motor output shaft mechanical seal connecting piece

Abstract

The utility model discloses a high-speed motor output shaft mechanical seal connecting piece which comprises a high-speed motor shell, an output shaft body, a sealing sleeve, a static sealing ring and a movable sealing ring, the sealing sleeve is arranged on the outer wall of one side of the high-speed motor shell, and installation blocks are welded to the outer wall of the sealing sleeve at equal intervals. A mounting groove is formed in the position, at the mounting block, of the outer wall of the high-speed motor shell, a sliding groove is formed in one side of the mounting groove, an insertion block is slidably mounted in the sliding groove, a first mounting hole is formed in one end in the insertion block, and the static sealing ring adheres to the inner wall of the sealing sleeve. A sealing groove is formed in the static sealing ring, the output shaft body is arranged in a high-speed motor shell, and the movable sealing ring is arranged on the outer wall, on one side of the static sealing ring, of the output shaft body in a sleeving mode. The utility model not only adopts multiple fixing modes, is firm and reliable and is not easy to loosen, but also improves the sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a mechanical sealing connector for an output shaft of a high-speed motor. Background Art

[0002] High-speed motors usually refer to motors with speeds exceeding 10,000 r / min. Due to their high speeds, these motors are much smaller than ordinary-power motors. When connected to the prime mover, the traditional reduction mechanism is eliminated. Therefore, they have the advantages of high motor power density, high transmission efficiency, low noise, and fast dynamic response. High-speed motors have small rotational inertia and can effectively save materials. Therefore, they are widely used in industries such as aerospace. The application of high-speed motors is expanding explosively, including power tools, molecular pumps, flywheel energy storage, and electronic turbocharging.

[0003] The mechanical seal of the output shaft of a high-speed motor is one of the important parts. The mechanical seal can prevent the leakage of lubricating oil to ensure the normal operation of the motor. It can also prevent external dust, moisture, impurities, etc. from entering the motor and affecting the service life and performance of the motor. Mechanical seals are usually installed with connectors, but general connectors are usually single bolt connections with a simple structure and easy to loosen. In addition, the sealing performance is average. Long-term use can easily lead to a decrease in sealing due to wear, so it is urgently needed to be improved. Utility Model Content

[0004] The utility model aims to provide a mechanical seal connector for a high-speed motor output shaft to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-speed motor output shaft mechanical seal connector, comprising a high-speed motor housing, an output shaft body, a sealing sleeve, a static sealing ring and a dynamic sealing ring, the sealing sleeve being arranged on the outer wall of one side of the high-speed motor housing, and the outer wall of the sealing sleeve is welded with equally spaced mounting blocks, and a second mounting hole is arranged inside the mounting block, a mounting groove is arranged on the outer wall of the high-speed motor housing at the position of the mounting block, and a slide groove is arranged on one side of the mounting groove, and an insert block is slidably installed inside the slide groove, a first mounting hole is arranged at one end inside the insert block, and a mounting bolt is installed inside the first mounting hole, and one end of the mounting bolt extends to the inside of the second mounting hole, the static sealing ring is adhered to the inner wall of the sealing sleeve, and a sealing groove is arranged inside the static sealing ring, the output shaft body is arranged inside the high-speed motor housing, and the dynamic sealing ring is sleeved on the outer wall of the output shaft body on one side of the static sealing ring.

[0006] Preferably, one end of the output shaft body passes through the static sealing ring and the sealing sleeve and extends to the outside of the high-speed motor housing.

[0007] Preferably, a positioning ring is fixed on one side of the dynamic sealing ring, and the positioning ring is fixedly connected to the output shaft body by screws.

[0008] Preferably, a first annular groove and a first annular protrusion are respectively provided on the inner wall of the static sealing ring.

[0009] Preferably, a second annular protrusion and a second annular groove are respectively provided on the outer wall of the dynamic sealing ring on the side close to the static sealing ring.

[0010] Preferably, the second annular protrusion and the second annular groove are tightly engaged with the first annular groove and the first annular protrusion respectively, so that the dynamic sealing ring and the static sealing ring are tightly fitted, thereby improving the sealing performance.

[0011] Preferably, a slot is provided on the outer wall of the bottom of the sealing sleeve, and one end of the insert block extends into the interior of the slot, so as to facilitate the positioning of the installation block.

[0012] Preferably, one side of the dynamic sealing ring is snap-fitted to the sealing groove.

[0013] The beneficial technical effects of the present technical scheme are as follows: the present technical scheme sleeves the dynamic sealing ring on the outside of the output shaft body, and the positioning ring on one side of the dynamic sealing ring is fixedly connected to the output shaft body by screws. The dynamic sealing ring fits tightly with the output shaft body without any gap. The sealing sleeve is sleeved on the outside of the output shaft body, and the sealing sleeve is pressed so that the mounting block is stuck in the mounting groove. The insert block is pushed so that it extends into the mounting groove and is stuck in the slot. The insert block presses the mounting block to limit its position, and then the mounting bolt is passed through the first mounting hole and screwed into the second mounting hole. The insert block and the mounting block are fixed, and the sealing sleeve can be connected and fixed. This connection method adopts multiple fixing methods, which is firm and reliable and not easy to loosen.

[0014] In the technical solution, the dynamic sealing ring is clamped into the sealing groove inside the static sealing ring, which plays the role of mechanical sealing. When the output shaft body rotates, the dynamic sealing ring rotates synchronously with the output shaft body, and the second annular protrusion and the second annular groove on the outer wall of the dynamic sealing ring are tightly clamped and fitted with the first annular groove and the first annular protrusion on the inner wall of the static sealing ring, so that the dynamic sealing ring and the static sealing ring are tightly fitted, thereby improving the sealing performance and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0016] Figure 2 It is a partial enlarged structural schematic diagram of the utility model.

[0017] Figure 3 It is a front view enlarged structural schematic diagram of the static sealing ring of the utility model.

[0018] Figure 4 It is a front view enlarged structural schematic diagram of the dynamic sealing ring of the utility model.

[0019] Figure 5 For the utility model Figure 1 Enlarged structural diagram at A in the middle.

[0020] Figure 6 It is a front view enlarged structural schematic diagram of the sealing sleeve of the utility model.

[0021] In the figure: 1. high-speed motor housing; 2. output shaft body; 3. sealing sleeve; 301. slot; 4. static sealing ring; 401. sealing groove; 402. first annular groove; 403. first annular protrusion; 5. dynamic sealing ring; 501. second annular protrusion; 502. second annular groove; 6. positioning ring; 7. screw; 8. mounting groove; 9. slide groove; 10. plug-in block; 11. first mounting hole; 12. mounting block; 13. second mounting hole; 14. mounting bolt. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0023] See also Figure 1-6 The utility model provides an embodiment: a high-speed motor output shaft mechanical seal connector, including a high-speed motor housing 1, an output shaft body 2, a sealing sleeve 3, a static sealing ring 4 and a dynamic sealing ring 5, the sealing sleeve 3 is arranged on the outer wall of one side of the high-speed motor housing 1, and the outer wall of the sealing sleeve 3 is welded with equally spaced mounting blocks 12, and a second mounting hole 13 is arranged inside the mounting block 12.

[0024] A mounting groove 8 is provided on the outer wall of the high-speed motor housing 1 at the position of the mounting block 12, and a slide groove 9 is provided on one side of the mounting groove 8, and an insert block 10 is slidably installed inside the slide groove 9, a first mounting hole 11 is provided at one end inside the insert block 10, and a mounting bolt 14 is installed inside the first mounting hole 11, and one end of the mounting bolt 14 extends to the inside of the second mounting hole 13; the static sealing ring 4 is adhered to the inner wall of the sealing sleeve 3, and a sealing groove 401 is provided inside the static sealing ring 4, and the output shaft body 2 is arranged inside the high-speed motor housing 1; the dynamic sealing ring 5 is sleeved on the outer wall of the output shaft body 2 on one side of the static sealing ring 4.

[0025] One end of the output shaft body 2 passes through the static sealing ring 4 and the sealing sleeve 3 and extends to the outside of the high-speed motor housing 1; a positioning ring 6 is fixed to one side of the dynamic sealing ring 5, and the positioning ring 6 is fixedly connected to the output shaft body 2 by screws 7.

[0026] Specifically, the dynamic sealing ring 5 is sleeved on the outside of the output shaft body 2, and the positioning ring 6 on one side of the dynamic sealing ring 5 is fixedly connected to the output shaft body 2 by a screw 7. The dynamic sealing ring 5 fits tightly with the output shaft body 2 without any gap. Secondly, the sealing sleeve 3 is sleeved on the outside of the output shaft body 2, and the sealing sleeve 3 is pressed so that the mounting block 12 is inserted into the mounting groove 8. The plug block 10 is pushed to extend into the mounting groove 8 and inserted into the slot 301. The plug block 10 presses the mounting block 12 to limit its position, and then the mounting bolt 14 is passed through the first mounting hole 11 and screwed into the second mounting hole 13. The plug block 10 and the mounting block 12 are fixed, and the sealing sleeve 3 can be connected and fixed. This connection method adopts a multiple fixing method, which is firm and reliable and not easy to loosen.

[0027] A first annular groove 402 and a first annular protrusion 403 are respectively provided on the inner wall of the static sealing ring 4; a second annular protrusion 501 and a second annular groove 502 are respectively provided on the outer wall of the dynamic sealing ring 5 close to the static sealing ring 4; the second annular protrusion 501 and the second annular groove 502 are tightly engaged with the first annular groove 402 and the first annular protrusion 403 respectively; a slot 301 is provided on the outer wall of the bottom of the sealing sleeve 3, and one end of the plug 10 extends to the inside of the slot 301; one side of the dynamic sealing ring 5 is engaged with the sealing groove 401.

[0028] Specifically, the dynamic sealing ring 5 is inserted into the sealing groove 401 inside the static sealing ring 4, and plays the role of a mechanical seal. When the output shaft body 2 rotates, the dynamic sealing ring 5 rotates synchronously with the output shaft body 2. The second annular protrusion 501 and the second annular groove 502 on the outer wall of the dynamic sealing ring 5 are tightly engaged with the first annular groove 402 and the first annular protrusion 403 on the inner wall of the static sealing ring 4, so that the dynamic sealing ring 5 is tightly fitted with the static sealing ring 4, thereby improving the sealing performance and extending the service life.

[0029] The working principle of the device is as follows: first, the dynamic sealing ring 5 is sleeved on the outside of the output shaft body 2; the positioning ring 6 on one side of the dynamic sealing ring 5 is fixedly connected to the output shaft body 2 by screws 7; the dynamic sealing ring 5 fits tightly with the output shaft body 2 without any gap; secondly, the sealing sleeve 3 is sleeved on the outside of the output shaft body 2; the sealing sleeve 3 is pressed so that the mounting block 12 is inserted into the mounting groove 8; the insert block 10 is pushed so that it extends into the mounting groove 8 and is inserted into the slot 301; the insert block 10 presses the mounting block 12 to limit its position; then the mounting bolt 14 is passed through the first mounting hole 11 and screwed into the second mounting hole 13; the insert block 10 and the mounting block 12 are fixed; the sealing sleeve 3 can be connected and fixed; this connection method adopts a multiple fixing method, which is firm and reliable and not easy to loosen.

[0030] The dynamic sealing ring 5 is inserted into the sealing groove 401 inside the static sealing ring 4, and plays the role of mechanical sealing. When the output shaft body 2 rotates, the dynamic sealing ring 5 rotates synchronously with the output shaft body 2. The second annular protrusion 501 and the second annular groove 502 on the outer wall of the dynamic sealing ring 5 are tightly engaged with the first annular groove 402 and the first annular protrusion 403 on the inner wall of the static sealing ring 4, so that the dynamic sealing ring 5 is tightly fitted with the static sealing ring 4, thereby improving the sealing performance and extending the service life.

Claims

1. A mechanical seal connector for a high-speed motor output shaft, characterized in that: The high-speed motor housing (1) comprises an output shaft body (2), a sealing sleeve (3), a static sealing ring (4) and a dynamic sealing ring (5), wherein the sealing sleeve (3) is arranged on the outer wall of one side of the high-speed motor housing (1), and the outer wall of the sealing sleeve (3) is welded with mounting blocks (12) at equal intervals, and the mounting blocks (12) are provided with second mounting holes (13) inside, and the outer wall of the high-speed motor housing (1) at the position of the mounting blocks (12) is provided with mounting grooves (8), and one side of the mounting groove (8) is provided with a slide groove (9), and the slide groove (9) is provided with a sliding hole inside. An insert block (10) is installed, one end of the insert block (10) is provided with a first mounting hole (11), and a mounting bolt (14) is installed inside the first mounting hole (11), one end of the mounting bolt (14) extends to the inside of the second mounting hole (13), the static sealing ring (4) is adhered to the inner wall of the sealing sleeve (3), and a sealing groove (401) is provided inside the static sealing ring (4), the output shaft body (2) is arranged inside the high-speed motor housing (1), and the dynamic sealing ring (5) is sleeved on the outer wall of the output shaft body (2) on one side of the static sealing ring (4).

2. A high-speed motor output shaft mechanical seal connector according to claim 1, characterized in that: One end of the output shaft body (2) passes through the static sealing ring (4) and the sealing sleeve (3) and extends to the outside of the high-speed motor housing (1).

3. A high-speed motor output shaft mechanical seal connector according to claim 1, characterized in that: A positioning ring (6) is fixed on one side of the dynamic sealing ring (5), and the positioning ring (6) is fixedly connected to the output shaft body (2) via screws (7).

4. A high-speed motor output shaft mechanical seal connector according to claim 1, characterized in that: A first annular groove (402) and a first annular protrusion (403) are respectively provided on the inner wall of the static sealing ring (4).

5. The high-speed motor output shaft mechanical seal connector according to claim 1, characterized in that: A second annular protrusion (501) and a second annular groove (502) are respectively provided on the outer wall of the dynamic sealing ring (5) on the side close to the static sealing ring (4).

6. A high-speed motor output shaft mechanical seal connector according to claim 5, characterized in that: The second annular protrusion (501) and the second annular groove (502) are tightly engaged with the first annular groove (402) and the first annular protrusion (403) respectively.

7. A high-speed motor output shaft mechanical seal connector according to claim 1, characterized in that: A slot (301) is provided on the outer wall of the bottom of the sealing sleeve (3), and one end of the insert block (10) extends into the interior of the slot (301).

8. The high-speed motor output shaft mechanical seal connector according to claim 1, characterized in that: One side of the dynamic sealing ring (5) is clamped with the sealing groove (401).

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