Air blower with waterproof sealing device

Abstract

The utility model discloses an air blower with a waterproof sealing device, and belongs to the technical field of waterproof sealing. The air blower with the waterproof sealing device further comprises an insertion block fixedly arranged on the left side of the limiting block. A plurality of balls are embedded in the inner side of the rubber sealing ring; each ball is in rolling connection with the outer circumference of the shaft; the left side of the insertion block is sleeved with a rear sealing cover. An oil seal rear cover is propped against the right side of the air blower shell corresponding to the O-shaped sealing ring; the outer side of the oil seal rear cover is fixedly connected with the oil seal front cover; the rolling balls are arranged, the adjacent rolling balls abut against each other, the rolling balls abut against the shaft, moist air is prevented from spreading to the abutting positions of the rolling balls and the left end of the inner side of the rubber sealing ring, meanwhile, the rolling balls abut against the shaft, rotating friction between the rubber sealing ring and the shaft is changed into rolling friction between the rolling balls and the shaft, and loss of the rubber sealing ring is reduced; the air blower sealing performance is improved, and abrasion between the shaft and the air blower shell is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of waterproof sealing, and more specifically relates to a blower with a waterproof sealing device. Background Art

[0002] In order to quickly condense the aluminum rod that has been homogenized and heat-treated, a cooling chamber is used to achieve the cooling effect. The cooling chamber mainly absorbs a large amount of water vapor under the action of a large-flow, high-pressure blower and discharges it. In order to prevent a large amount of water from overflowing between the rear side plate of the blower's volute and the main shaft, a waterproof sealing device needs to be installed. The traditional waterproof sealing device is to install a packing device flange at the rear end of the blower volute, and install high-carbon fiber asbestos packing in the packing flange, and finally use a pressure plate to press the packing. The traditional waterproof sealing device has solved the problem of water overflow during the operation of the blower, but after the blower has been running for a long time, the high-carbon fiber asbestos packing will wear, which will cause the waterproof sealing device to overflow to varying degrees, and water will overflow from the waterproof sealing device.

[0003] For example, patent application number CN202020559669.5 is a waterproof sealing device suitable for a blower, comprising a rear side plate of a volute, a rear connecting plate, an arc-shaped box body, and a main shaft, wherein the rear side plate of the volute and the arc-shaped box body are sleeved on the main shaft, the rear side plate of the volute and the arc-shaped box body are connected by the rear connecting plate, and a flange plate is installed at the front end of the rear side plate of the volute. The beneficial effects of the utility model are as follows: an arc-shaped box body is installed on the rear side plate of the volute, and a double sealing design of rubber pads and skeleton oil seals is adopted between the box body and the main shaft, and an O-ring seal is additionally installed between the box body and the rear side plate of the volute. Through multiple seals, the overflow water generated by the blower during long-term operation will be stored in the arc-shaped box body instead of overflowing, which effectively solves the overflow problem of the blower caused by long-term operation, and the appearance of the arc-shaped box body is beautiful and generous.

[0004] Although the waterproof sealing device for the blower can effectively solve the water overflow problem caused by long-term operation of the blower, its structure has defects. Most bearings need to be installed between the main shaft and the blower, and the sealing should be strengthened during the use of the bearing. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a blower with a waterproof sealing device, which improves the sealing performance of the blower and reduces the wear of the shaft and the blower casing.

[0006] The utility model discloses a blower with a waterproof sealing device, comprising a shaft; a bearing is clamped on the outer side of the shaft; the outer ring of the bearing is clamped on the blower housing; a limit block is fixedly arranged on the inner side of the blower housing; the limit block abuts against the left end face of the bearing; an O-ring is sleeved on the outer side of the limit block; further comprising an insert block fixedly arranged on the left side of the limit block; a rubber sealing ring is fixedly clamped on the inner side of the limit block; the right side face of the rubber sealing ring abuts against the left end face of the limit block; a plurality of balls are embedded on the inner side of the rubber sealing ring; each of the balls is rollingly connected to the outer circumference of the shaft; a rear cover is sleeved on the left side of the insert block; The inner wall of the rear cover is in contact with the limit block and the O-ring; the right side of the blower casing is in contact with the oil seal rear cover at the O-ring; the outer side of the oil seal rear cover is fixedly connected to the oil seal front cover; there is an oil seal cavity between the oil seal rear cover and the oil seal front cover; an oil seal plug is embedded in the upper end of the oil seal front cover; the rear cover, the O-ring, the oil seal rear cover and the oil seal front cover are fixed to the blower casing by bolts; a water collecting trough is fixedly provided at the lower end of the limit block; the water collecting trough is communicated with the rubber seal ring and the inner side of the bearing; a drain outlet is fixedly provided on the right end face of the blower casing; the water collecting trough and the drain outlet are communicated.

[0007] Preferably, the rubber sealing ring is a high-elastic rubber pad; the rubber sealing ring is pressed against the lower end of the plug block.

[0008] Preferably: the rear cover is in clearance fit with the shaft; the right side of the rear cover is pressed against the left side of the insert block.

[0009] Preferably: each of the balls is a chrome-plated stainless steel ball; two adjacent balls abut against each other; and the left and right sides of each ball abut against the two ends of the inner wall of the rubber sealing ring.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] (1) By arranging the balls, the adjacent balls are in contact with each other, and the balls are in contact with the shaft, which prevents the moist air from spreading to the contact point between the balls and the inner left end of the rubber seal ring. At the same time, the contact balls are in contact with the shaft, which converts the rotational friction between the rubber seal ring and the shaft into rolling friction between the balls and the shaft, thereby reducing the loss of the rubber seal ring, improving the sealing performance of the blower, and reducing the wear of the shaft and the blower casing.

[0012] (2) By setting up the oil seal front cover and the oil seal rear cover, the oil seal is used to block the air flow path between the shaft and the blower housing to reduce water accumulation and prevent shaft corrosion; by setting up the oil seal front cover and the oil seal rear cover, a large amount of heat is prevented from accumulating on the right side of the shaft during the rotation of the shaft, and the oil inside the oil seal cavity is used to evenly replace the heat accumulated on the right side of the shaft, thereby reducing shaft loss;

[0013] (3) By connecting the water collection tank and the drain outlet in a Z-shaped flow channel, the moist air from the outside is prevented from contacting the shaft through the drain outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the enlarged structure of point I of the utility model.

[0017] Explanation of the numbers in the figure: 10, shaft; 11, blower housing; 12, oil seal front cover; 13, oil seal plug; 14, oil seal rear cover; 15, oil seal chamber; 16, bearing; 17, limit block; 18, O-ring; 19, rubber seal; 20, ball; 21, rear cover; 22, water collection tank; 23, drain outlet; 24, plug. DETAILED DESCRIPTION

[0018] Specific embodiment 1: Please refer to Figure 1-3A blower with a waterproof sealing device comprises a shaft 10; a bearing 16 is clamped on the outer side of the shaft 10; the outer ring of the bearing 16 is clamped on the blower housing 11; a limit block 17 is fixedly arranged on the inner side of the blower housing 11; the limit block 17 abuts against the left end face of the bearing 16; an O-ring 18 is sleeved on the outer side of the limit block 17; and an insert block 24 is fixedly arranged on the left side of the limit block 17; a rubber sealing ring 19 is fixedly clamped on the inner side of the limit block 17; the right side of the rubber sealing ring 19 abuts against the left end face of the limit block 17; and a A plurality of balls 20; each of the balls 20 is connected to the outer circumference of the shaft 10 in a rolling manner; a rear cover 21 is sleeved on the left side of the insert block 24; the inner side wall of the rear cover 21 abuts against the limit block 17 and the O-ring 18; the right side of the blower housing 11 abuts against the oil seal rear cover 14 at the position corresponding to the O-ring 18; the outer side of the oil seal rear cover 14 is fixedly connected to the oil seal front cover 12; an oil seal cavity 15 is formed between the oil seal rear cover 14 and the oil seal front cover 12; an oil seal plug 13 is embedded at the upper end of the oil seal front cover 12; the rear cover 21, the O-ring 18, the oil seal rear cover 14 and the oil seal front cover 1 2 is fixed to the blower housing 11 by bolts; a water collecting tank 22 is fixedly arranged at the lower end of the limit block 17; the water collecting tank 22 is communicated with the rubber sealing ring 19 and the inner side of the bearing 16; a drain port 23 is fixedly arranged on the right end face of the blower housing 11; the water collecting tank 22 and the drain port 23 are communicated; by arranging the ball 20, the adjacent balls 20 are abutted against each other, and the ball 20 abuts against the shaft 10, the moist air is blocked from spreading to the abutment between the ball 20 and the inner left end of the rubber sealing ring 19, and at the same time, the contact ball 20 abuts against the shaft 10, the rubber sealing ring 19 is abutted against the shaft 10, and the rubber sealing ring 19 is abutted against the shaft 10. The rotational friction of the shaft 10 is converted into rolling friction between the ball 20 and the shaft 10, which reduces the loss of the rubber sealing ring 19, improves the sealing performance of the blower, and reduces the wear of the shaft 10 and the blower housing 11. By setting the oil seal front cover 12 and the oil seal rear cover 14, the oil seal is used to block the air flow channel between the shaft 10 and the blower housing 11 to reduce water accumulation and prevent the shaft 10 from rusting. By setting the oil seal front cover 12 and the oil seal rear cover 14, a large amount of heat is prevented from accumulating on the right side of the shaft 10 during the rotation of the shaft 10, and the oil inside the oil seal cavity 15 is used to evenly replace the heat accumulated on the right side of the shaft 10, thereby reducing the loss of the shaft 10.

[0019] See also Figure 2 The rubber sealing ring 19 is a high-elastic rubber pad; the rubber sealing ring 19 is pressed against the lower end of the plug block 24.

[0020] See also Figure 2 The rear cover 21 is loosely fitted with the shaft 10; the right side of the rear cover 21 is pressed against the left side of the insert 24; by connecting the water collecting tank 22 and the drain outlet 23 to form a Z-shaped flow channel, the moist air outside is blocked from contacting the shaft 10 from the drain outlet 23.

[0021] See also Figure 2 Each of the balls 20 is a chrome-plated stainless steel ball; two adjacent balls 20 abut against each other; and the left and right sides of each of the balls 20 abut against the two ends of the inner wall of the rubber sealing ring 19.

[0022] When the blower is working, there is no water accumulation outside the shaft 10, and the blower operates normally; when the blower is working in an area with high air humidity, humid air enters the inner ring of the oil seal rear cover 14 from the inner ring of the oil seal front cover 12, and the oil seal cavity 15 can condense the moisture in the humid air, and the water droplets flow from the gap between the oil seal rear cover 14 and the shaft 10 through the gap of the bearing 16, and finally flow to the gap between the limit block 17 and the shaft 10. The right edge of the rubber seal ring 19 blocks the water flow from entering around the ball 20, so that the water flows from the right edge of the rubber seal ring 19 and the surface of the shaft 10 to the water collection tank 22, and finally flows out from the drain port 23;

[0023] As the blower works for a long time, if the rubber seal ring 19 and the oil seal chamber 15 are worn on the side close to the shaft 10, the centrifugal force of the shaft 10 will throw the condensed water droplets to the side wall of the limit block 17; then the water droplets accumulate on the side where the ball 20 in the rubber seal ring 19 abuts against the shaft 10, slide along the edge of the ball 20 into the water collection tank 22, and finally flow out from the drain port 23, preventing the humid air from corroding the shaft 10 and maintaining the normal operation of the blower. The humid air enters the Z-shaped channel formed by the drain port 23 and the water collection tank 22 and then cools down, and the water flow will eventually flow out from the drain port 23.

[0024] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0025] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the product or system including the elements.

[0026] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A blower with a waterproof sealing device, comprising a shaft (10); the shaft (10) is clamped with a bearing (16) on the outside; the outer ring of the bearing (16) is clamped with a blower housing (11); a limit block (17) is fixedly arranged on the inside of the blower housing (11); the limit block (17) is in contact with the left end surface of the bearing (16); an O-ring (18) is sleeved on the outside of the limit block (17); the characteristics are as follows: It also includes an insert block (24) fixedly arranged on the left side of the limit block (17); a rubber sealing ring (19) is fixedly engaged on the inner side of the limit block (17); the right side surface of the rubber sealing ring (19) abuts against the left end surface of the limit block (17); a plurality of balls (20) are embedded on the inner side of the rubber sealing ring (19); each of the balls (20) is in rolling connection with the outer circumference of the shaft (10); a rear cover (21) is sleeved on the left side of the insert block (24); the inner side wall of the rear cover (21) abuts against the limit block (17) and the O-ring (18); the right side of the blower housing (11) corresponding to the O-ring (18) abuts against the oil seal rear cover (14); the oil seal rear cover (14) The outer side is fixedly connected to the oil seal front cover (12); an oil seal cavity (15) is provided between the oil seal rear cover (14) and the oil seal front cover (12); an oil seal plug (13) is embedded at the upper end of the oil seal front cover (12); the rear seal cover (21), the O-ring (18), the oil seal rear cover (14) and the oil seal front cover (12) are fixed to the blower casing (11) by bolts; a water collecting trough (22) is fixedly provided at the lower end of the limit block (17); the water collecting trough (22) is communicated with the rubber seal ring (19) and the inner side of the bearing (16); a drain outlet (23) is fixedly provided on the right end surface of the blower casing (11); the water collecting trough (22) and the drain outlet (23) are communicated.

2. A blower with a waterproof sealing device according to claim 1, characterized in that: The rubber sealing ring (19) is a high-elastic rubber pad; the rubber sealing ring (19) is pressed against the lower end of the insert block (24).

3. The blower with a waterproof sealing device according to claim 1, characterized in that: The rear cover (21) and the shaft (10) are clearance-matched; the right side surface of the rear cover (21) is pressed against the left side surface of the insert block (24).

4. The blower with a waterproof sealing device according to claim 1, characterized in that: Each of the balls (20) is a chrome-plated stainless steel ball; two adjacent balls (20) abut against each other; and the left and right sides of each ball (20) abut against the two ends of the inner wall of the rubber sealing ring (19).

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