Impact-resistant rotation-resistant material level switch

Abstract

The utility model relates to an impact-resistant rotation-resistant material level switch, which comprises a shell and a transmission shaft, one end of the transmission shaft is rotatably connected to the bottom of the shell, the other end of the transmission shaft is provided with a first fixing block, a certain position of the surface of the transmission shaft is provided with a first fixing plate, and the bottom of the first fixing plate is provided with a second fixing plate. A protective sleeve is arranged at the bottom of the second fixing plate and sleeves the surface of the transmission shaft, and blades are arranged at the bottom of the outer surface of the transmission shaft; according to the utility model, the blades are arranged at the protective sleeve, and the protective sleeve is connected with the transmission shaft in a manner similar to a flange plate, so that when the blades are subjected to impact force of materials, the impact force acts on the protective sleeve, the transmission shaft cannot be damaged, the transmission shaft can be further prevented from being bent, and certain practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary level switches, in particular to an impact-resistant rotary level switch. Background Technique

[0002] The rotary switch is a level controller for solid materials (including powders, granules, blocks, gels, etc.), and it 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 blades are arranged at the bottom of the transmission shaft. When the material is not contacted, the motor runs normally. When the blades contact the material, the motor stops rotating.

[0004] However, during the use of the rotary switch, when the blades contact the material, the transmission shaft will bear the impact force of the material. During long-term use, the transmission shaft will be bent to a certain extent, which greatly affects the service life of the rotary level switch. Summary of the Invention

[0005] The purpose of the utility model is to provide an impact-resistant rotary level switch to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An impact-resistant rotary level switch includes a housing and a transmission shaft. One end of the transmission shaft is rotatably connected to the bottom of the housing. The other end of the transmission shaft is provided with a first fixing block. A first fixing plate is arranged at a certain position on the surface of the transmission shaft. A second fixing plate is arranged at the bottom of the first fixing plate. A protective sleeve is arranged at the bottom of the second fixing plate. The protective sleeve is sleeved on the surface of the transmission shaft. Blades are arranged at the bottom of the outer surface of the transmission shaft.

[0008] Preferably, a flange is fixedly sleeved at the connection between the transmission shaft and the housing.

[0009] Preferably, a second fixing block is arranged at the bottom of the first fixing block, and the bottom of the second fixing block is located at the inner bottom of the protective sleeve.

[0010] Preferably, a fixing column is arranged at the center of the top of the second fixing block, a fixing groove is opened at the corresponding position of the bottom of the first fixing block for the fixing column, and the fixing column is connected to the fixing groove in a snap-fit manner.

[0011] Preferably, a plurality of limiting ports are opened at the top and bottom of the first fixing plate, fixing ports are opened at the top and bottom of the second fixing plate corresponding to the limiting ports, and the fixing ports and the limiting ports are connected by fixing bolts.

[0012] Preferably, an interface is provided on one side of the outer surface of the housing.

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

[0014] In an impact-resistant and rotation-resistant level switch of the present utility model, by arranging the blade at the protective sleeve, and connecting the protective sleeve and the transmission shaft in a manner similar to a flange, when the blade is impacted by the material, the impact force will act on the protective sleeve and will not damage the transmission shaft, thereby avoiding the transmission shaft from being bent, which has certain practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the overall exploded structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the internal structure of the protective sleeve of the present utility model;

[0018] In the figure: 1, housing; 2, flange; 3, transmission shaft; 4, first fixing plate; 5, second fixing plate; 6, protective sleeve; 7, blade; 8, fixing bolt; 9, limiting port; 10, first fixing block; 11, fixing groove; 12, fixing port; 13, second fixing block; 14, fixing column; 15, interface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying 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 of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making 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, and 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 should not be construed as a limitation of 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", and "coupled" 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 components. 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 Figures 1-3 , the present utility model provides a technical solution:

[0023] An impact-resistant and rotation-resistant level switch, comprising a housing 1 and a transmission shaft 3. One end of the transmission shaft 3 is rotatably connected to the bottom of the housing 1. A first fixing block 10 is provided at the other end of the transmission shaft 3. A first fixing plate 4 is provided at a certain position on the surface of the transmission shaft 3. A second fixing plate 5 is provided at the bottom of the first fixing plate 4. A protective sleeve 6 is provided at the bottom of the second fixing plate 5. The protective sleeve 6 is sleeved on the surface of the transmission shaft 3. A blade 7 is provided at the bottom of the outer surface of the transmission shaft 3.

[0024] Furthermore, a flange 2 is fixedly sleeved at the connection between the transmission shaft 3 and the housing 1.

[0025] Furthermore, a second fixing block 13 is provided at the bottom of the first fixing block 10, and the bottom of the second fixing block 13 is located at the inner bottom of the protective sleeve 6.

[0026] Furthermore, a fixing post 14 is provided at the center of the top of the second fixing block 13, and a fixing groove 11 is provided at the corresponding position of the bottom of the first fixing block 10 for the fixing post 14. The fixing post 14 is snap-connected to the fixing groove 11.

[0027] Specifically, the protective sleeve 6 and the top of the transmission shaft 3 are connected by means of the first fixing plate 4 and the second fixing plate 5. In addition, the protective sleeve 6 and the bottom of the transmission shaft 3 are connected by the first fixing block 10 and the second fixing block 13. Among them, the first fixing plate 4 and the second fixing plate 5 are connected by fixing bolts 8, and the first fixing block 10 and the second fixing block 13 are connected by snap-connecting the fixing post 14 to the fixing groove 11, so that the connection between the protective sleeve 6 and the transmission shaft 3 is more stable.

[0028] Furthermore, a plurality of limiting ports 9 are provided at the top and bottom of the first fixing plate 4, and fixing ports 12 are provided at the corresponding positions of the top and bottom of the second fixing plate 5 for the limiting ports 9. The fixing ports 12 and the limiting ports 9 are connected by fixing bolts 8.

[0029] Furthermore, an interface 15 is provided on one side of the outer surface of the housing 1.

[0030] Working principle: An impact-resistant and rotation-resistant level switch of the present utility model has a blade 7 disposed at a protective sleeve 6, and the protective sleeve 6 is connected to a transmission shaft 3 through a first fixing plate 4 and a second fixing plate 5. The first fixing plate 4 and the second fixing plate 5 are fixedly connected through a fixing bolt 8. During use, when the blade 7 is impacted by the material, the impact force will act on the protective sleeve 6. Moreover, the material used for the protective sleeve 6 has extremely high strength, and the inside of the protective sleeve 6 is also filled with the transmission shaft 3, so that it is not easy to bend here, and thus the transmission shaft 3 can be prevented from bending.

[0031] Although the embodiments of the present utility model 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 utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant rotary paddle level switch, comprising a housing (1) and a transmission shaft (3), characterized in that: One end of the transmission shaft (3) is rotatably connected to the bottom of the housing (1); the other end of the transmission shaft (3) is provided with a first fixing block (10); a first fixing plate (4) is provided at a certain position on the surface of the transmission shaft (3); a second fixing plate (5) is provided at the bottom of the first fixing plate (4); a protective sleeve (6) is provided at the bottom of the second fixing plate (5); the protective sleeve (6) is sleeved on the surface of the transmission shaft (3); and a blade (7) is provided at the bottom of the outer surface of the transmission shaft (3).

2. The impact-resistant rotary paddle level switch according to claim 1, characterized in that: A flange (2) is fixedly sleeved at the connection between the transmission shaft (3) and the housing (1).

3. The impact-resistant rotary paddle level switch according to claim 1, characterized in that: A second fixing block (13) is arranged at the bottom of the first fixing block (10), and the bottom of the second fixing block (13) is located at the bottom of the interior of the protective cover (6).

4. The impact-resistant rotary paddle level switch according to claim 3 is characterized in that: A fixing column (14) is arranged at the top centre of the second fixing block (13), a fixing groove (11) is provided at the bottom of the first fixing block (10) corresponding to the fixing column (14), and the fixing column (14) is snap-fittedly connected to the fixing groove (11).

5. The impact-resistant rotary paddle level switch according to claim 1, characterized in that: The top and bottom of the first fixing plate (4) are provided with a plurality of limiting openings (9), and the top and bottom of the second fixing plate (5) are provided with fixing openings (12) corresponding to the limiting openings (9), and the fixing openings (12) are connected to the limiting openings (9) via fixing bolts (8).

6. The impact-resistant rotary paddle level switch according to claim 1, characterized in that: An interface (15) is provided on one side of the outer surface of the housing (1).

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