High-protection rotation-resistant material level switch

Abstract

The utility model relates to a high-protection rotation-resistant material level switch, which comprises a shell and a transmission shaft, the top end of the transmission shaft is rotatably connected with the bottom end of the shell, an oil seal is fixedly sleeved at the joint of the shell and the transmission shaft, a flange plate is arranged on the surface of the bottom of the shell, and a protection sleeve is sleeved on the surface of the transmission shaft. The bottom of the surface of the transmission shaft is sleeved with blades, the bottom of the protective sleeve is located at the tops of the blades, a sealing sleeve is arranged at the top of the protective sleeve, the outer surface of the oil seal is sleeved with the sealing sleeve, the top of the sealing sleeve makes contact with the bottom of the flange plate, and a sealing plate is arranged on the outer surface of the top of the sealing sleeve; the combined body of the protective sleeve, the sealing sleeve and the sealing plate is arranged at the bottom of the flange plate and the top of the blade, the joint of the transmission shaft and the shell is arranged in the protective sleeve through the combined body, and the transmission shaft is protected to a certain degree and is prevented from being bent to a certain degree during use.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary level switches, and particularly relates to a high-protection rotary level switch. Background Technique

[0002] The rotary switch is a level controller for solid materials (including powders, granules, blocks, adhesives, etc.), and has been widely used in industries such as chemical industry, plastics, cement, food, pharmaceuticals, and feeds.

[0003] In the prior art, the rotary level switch uses a micro motor as a driving device. The transmission shaft is connected to the clutch, and a blade is arranged at the bottom of the transmission shaft. When the material is not contacted, the motor operates normally. When the blade contacts the material, the motor stops rotating.

[0004] However, when the rotary level switch in the prior art is used in the transfer funnel of the bulk cargo conveyor belt in mines, ports, power plants, steel mills, etc., the substances in the funnel easily enter the connection part of the transmission shaft and the housing along the transmission shaft, thereby damaging the internal parts of the housing, and thus affecting the service life of the rotary level switch.

[0005] Therefore, it is necessary to design a protection device to protect the connection part of the transmission shaft and the housing, thereby improving the service life of the rotary level switch. Summary of the Invention

[0006] The purpose of the utility model is to provide a high-protection rotary level switch to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A high-protection rotary level switch includes a housing and a transmission shaft. The top end of the transmission shaft is rotatably connected to the bottom end of the housing. An oil seal is fixedly sleeved at the connection part of the housing and the transmission shaft. A flange is arranged on the bottom surface of the housing. A protective sleeve is sleeved on the surface of the transmission shaft. A blade is sleeved at the bottom of the surface of the transmission shaft. The bottom of the protective sleeve is located above the blade. A sealing sleeve is arranged at the top of the protective sleeve. The inside of the sealing sleeve is sleeved on the outer surface of the oil seal. The top of the sealing sleeve is in contact with the bottom of the flange. A sealing plate is arranged on the outer surface of the top of the sealing sleeve.

[0009] Preferably, a plurality of fixing holes are vertically opened at the top and bottom of the sealing plate, and limiting holes are opened at the top and bottom of the flange corresponding to the fixing holes.

[0010] Preferably, fixing bolts are arranged between the fixing holes and the limiting holes.

[0011] Preferably, first fixing blocks are arranged on both sides of the top of the outer surface of the blade. A second fixing block is arranged on the top of the first fixing block, and the inner side surface of the second fixing block is connected to the surface of the protective sleeve.

[0012] Preferably, the first fixing block and the second fixing block are connected by fixing pins.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In a high-protection anti-rotation level switch of the present utility model, an oil seal is arranged at the connection between the housing and the transmission shaft. The oil seal is used to improve the sealing performance at the connection between the housing and the transmission shaft, prevent substances from entering the interior of the housing from the connection, and further damage the components inside the housing.

[0015] In a high-protection anti-rotation level switch of the present utility model, a protective sleeve, a sealing sleeve, and a sealing plate combination are arranged at the bottom of the flange and the top of the blade. The connection between the transmission shaft and the housing is arranged inside the protective sleeve through the combination, and the transmission shaft is also protected to a certain extent to prevent the transmission shaft from being bent to a certain extent during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the overall exploded structure of the present utility model.

[0018] In the figure: 1, housing; 2, flange; 3, protective sleeve; 4, blade; 5, fixing bolt; 6, limiting port; 7, oil seal; 8, transmission shaft; 9, sealing plate; 10, fixing port; 11, fixing pin; 12, first fixing block; 13, second fixing block; 14, sealing sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0021] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] Please refer to Figure 1-2 , the present utility model provides a technical solution:

[0023] A highly protective blocking rotation level switch, including a housing 1 and a transmission shaft 8. The top end of the transmission shaft 8 is rotatably connected to the bottom end of the housing 1. An oil seal 7 is fixedly sleeved at the connection between the housing 1 and the transmission shaft 8. A flange 2 is provided on the bottom surface of the housing 1. A protective sleeve 3 is sleeved on the surface of the transmission shaft 8. A blade 4 is sleeved at the bottom of the surface of the transmission shaft 8. The bottom of the protective sleeve 3 is located above the top of the blade 4. A sealing sleeve 14 is provided at the top of the protective sleeve 3. The inside of the sealing sleeve 14 is sleeved on the outer surface of the oil seal 7. The top of the sealing sleeve 14 is in contact with the bottom of the flange 2. A sealing plate 9 is provided on the outer surface of the top of the sealing sleeve 14.

[0024] Furthermore, a plurality of fixing holes 10 are penetrated through the top and bottom of the sealing plate 9. Limiting holes 6 are opened at the top and bottom of the flange 2 corresponding to the fixing holes 10.

[0025] Furthermore, fixing bolts 5 are provided between the fixing holes 10 and the limiting holes 6.

[0026] Specifically, the present utility model fixedly connects the sealing plate 9 to the bottom of the flange 2 through the fixing bolts 5, so that the connection part of the housing 1 for the transmission shaft 8 is arranged inside the sealing sleeve 14, thereby protecting the connection part of the housing 1 and the transmission shaft 8, preventing substances from entering the inside of the housing 1 from the connection part during use, and further damaging the components inside the housing 1.

[0027] It should be noted that considering there is a certain gap between the sealing plate 9 and the flange 2, substances may enter the sealing sleeve 14 through the gap. An oil seal 7 is sleeved on the connecting part between the housing 1 and the transmission shaft 8. The setting of the oil seal 7 can improve the sealing performance of the connecting part and prevent substances from entering the interior of the housing 1 from the connection part.

[0028] Furthermore, first fixing blocks 12 are arranged on both sides of the top of the outer surface of the blade 4. A second fixing block 13 is arranged on the top of the first fixing block 12, and the inner side surface of the second fixing block 13 is connected to the surface of the protective sleeve 3.

[0029] Furthermore, the first fixing block 12 and the second fixing block 13 are connected by a fixing pin 11.

[0030] Specifically, during long-term use, the blade 4 may be damaged. The fixing pin 11 here can be removed to take the blade 4 off the transmission shaft 8. At the same time, a new blade 4 is sleeved back in place and then fixed again through the fixing pin 11.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly protective non-contact level switch, comprising a housing (1) and a drive shaft (8), characterized in that: The top end of the transmission shaft (8) is rotatably connected to the bottom end of the housing (1). An oil seal (7) is fixedly sleeved at the connection between the housing (1) and the transmission shaft (8). A flange plate (2) is provided on the bottom surface of the housing (1). A protective sleeve (3) is sleeved on the surface of the transmission shaft (8). A blade (4) is sleeved at the bottom of the surface of the transmission shaft (8). The bottom of the protective sleeve (3) is located above the blade (4). A sealing sleeve (14) is provided at the top of the protective sleeve (3). The inner part of the sealing sleeve (14) is sleeved on the outer surface of the oil seal (7). The top of the sealing sleeve (14) is in contact with the bottom of the flange plate (2). A sealing plate (9) is provided on the outer surface of the top of the sealing sleeve (14).

2. The high-protection type non-contact rotary level switch according to claim 1, characterized in that: A number of fixing holes (10) are formed through the top and bottom of the sealing plate (9). Limit holes (6) are formed at the top and bottom of the flange plate (2) corresponding to the fixing holes (10).

3. The high-protection obstruction-rotation type level switch according to claim 2, wherein: Fixing bolts (5) are provided between the fixing holes (10) and the limit holes (6).

4. A highly protective non-contact type level switch according to claim 1, characterized in that: On both sides of the top of the outer surface of the blade (4), first fixing blocks (12) are provided. Second fixing blocks (13) are provided at the tops of the first fixing blocks (12). The inner sides of the second fixing blocks (13) are connected to the surface of the protective sleeve (3).

5. The high-protection blocking-rotation level switch according to claim 4, characterized in that: The first fixing blocks (12) and the second fixing blocks (13) are connected by fixing pins (11).

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