High-temperature-resistant rotation-resistant material level switch

Abstract

The utility model relates to a high-temperature-resistant rotation-resistant material level switch, which comprises a driving motor, a transmission piece and a blade, and is characterized in that the transmission piece comprises a first shaft section, a connecting piece, a second shaft section, a heat dissipation piece and a protective cylinder; the driving motor is in driving connection with the first shaft section, the second shaft section is rotatably fixed in the protective cylinder, the two ends of the connecting piece are connected with the first shaft section and the second shaft section in a clamped mode respectively, the end, away from the connecting piece, of the second shaft section is connected with the blades, one end of the heat dissipation piece is connected with the driving motor, and the other end of the heat dissipation piece is connected with the protective cylinder. The connecting piece is located in the heat dissipation piece. Compared with the prior art, the LED lamp has the advantages of being good in heat dissipation effect, simple in installation structure, convenient to maintain and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of switch device especially relates to a high temperature resistant anti-rotation material position switch. BACKGROUND

[0002] The material position switch is mostly used for measuring the storage height or position of material to control the processing, storage and conveying of material. The environment where it is located greatly influences its use effect, especially its reliability and durability are often challenged in high temperature environment. The electronic elements of the transmission source of the material position switch are often damaged in high temperature environment, resulting in inaccurate reading and equipment failure. Therefore, how to avoid direct contact between the transmission source and high temperature heat is an important problem that must be considered in design.

[0003] The utility model discloses a high temperature resistant anti-rotation material position switch, and a center shaft hole is arranged on the upper support plate, a motor is fixed in the shaft hole, and a first magnet block is arranged on the shaft end. One end of the support rod is welded on the lower support plate through the heat insulation plate, and a nitrogen cylinder is welded on the lower support plate and is provided with a nitrogen inlet. The heat insulation plate is fixed on the nitrogen cylinder. The protection cylinder is connected with the lower support plate through bolts. The blade shaft penetrates through the protection cylinder, the lower support plate, the nitrogen cylinder and the heat insulation plate, and the lower end of the blade shaft is fixed with a blade, and the upper end of the blade shaft is provided with a second magnet block. The switch drives the blade shaft to rotate through the magnetic force of the first magnet block and the second magnet block, and there is no direct contact between the magnet blocks, so that the influence of high temperature on the motor is effectively insulated.

[0004] However, the above-mentioned prior art reduces the heat conduction from the front blade to the driving motor through the nitrogen cylinder and the heat insulation plate, and improves the temperature that the material position switch can adapt to. However, the heat dissipation structure of the switch is difficult to prepare, the fixed structure is complex, the maintenance is not convenient, and the production and maintenance cost is high. Therefore, a high temperature resistant anti-rotation material position switch with good heat dissipation effect and simple structure is needed. UTILITY MODEL CONTENTS

[0005] The utility model discloses a high temperature resistant anti-rotation material position switch that overcomes the defects of complex structure, inconvenient installation and disassembly and high production and maintenance cost of the prior art.

[0006] The utility model discloses a high temperature resistant anti-rotation material position switch that overcomes the defects of complex structure, inconvenient installation and disassembly and high production and maintenance cost of the prior art.

[0007] The application discloses a high-temperature-resistant anti-rotation material level switch which comprises a driving motor, a transmission member and a blade, wherein the transmission member comprises a first shaft section, a connecting piece, a second shaft section, a heat dissipation piece and a protection cylinder; the driving motor is connected with the first shaft section; the second shaft section is rotatably fixed in the protection cylinder; the connecting piece is connected with the first shaft section and the second shaft section through clamping; the second shaft section is connected with the blade; one end of the heat dissipation piece is connected with the driving motor, and the other end of the heat dissipation piece is connected with the protection cylinder; and the connecting piece is arranged in the heat dissipation piece.

[0008] Preferably, the side wall of the heat dissipation piece is provided with heat dissipation through holes in a hollow structure, the heat dissipation through holes are long circular holes distributed along the axial direction of the heat dissipation piece, and the connecting piece and the heat dissipation piece are made of aluminum alloy.

[0009] Preferably, the heat dissipation through holes are multiple, and each heat dissipation through hole is uniformly distributed along the circumferential direction of the heat dissipation piece.

[0010] Preferably, the two ends of the connecting piece are respectively provided with a first clamping groove and a second clamping groove in the radial direction, one end of the first shaft section close to the connecting piece is provided with a first elastic pin matched with the first clamping groove in the radial direction, the first elastic pin is clamped in the first clamping groove, and one end of the second shaft section close to the connecting piece is provided with a second elastic pin matched with the second clamping groove in the radial direction, and the second elastic pin is clamped in the second clamping groove.

[0011] Preferably, the opening directions of the first clamping groove and the second clamping groove are perpendicular to each other, the distance between the first shaft section and the second shaft section is greater than the distance between the groove bottoms of the first clamping groove and the second clamping groove, and is smaller than the length of the connecting piece.

[0012] Preferably, the length of the first elastic pin is greater than the inner diameter of the connecting piece and is smaller than the outer diameter of the connecting piece, and the length of the second elastic pin is greater than the inner diameter of the connecting piece and is smaller than the outer diameter of the connecting piece.

[0013] Preferably, one end of the protection cylinder close to the heat dissipation piece is provided with a mounting piece, the protection cylinder is provided with external threads at the end close to the heat dissipation piece, the driving motor is provided with a threaded end, the heat dissipation piece is provided with internal threads at the two ends, and the heat dissipation piece is threadedly connected with the protection cylinder.

[0014] Preferably, bearings are arranged at the two ends of the protection cylinder, and the second shaft section is rotatably fixed in the protection cylinder through the bearings.

[0015] Preferably, the bearing at the end of the protection cylinder close to the heat dissipation piece is sealed through a high-temperature-resistant oil seal.

[0016] Preferably, the blade is provided with a cylindrical tool handle, the second shaft section is inserted into the tool handle and is fixed through bolts.

[0017] Compared with the prior art, the utility model has the advantages of the following:

[0018] (1) this scheme adopts two section transmission shaft, and cooperation connecting piece connects driving motor and blade, can effectively reduce the conduction of high temperature in detection bin to driving motor based transmission shaft, plays good heat dissipation effect, reduces the risk of driving motor damage, increases the service life of material level switch in high temperature environment. And through the heat dissipation piece connects the protection cylinder and the driving motor, the first shaft section, the connecting piece and the second shaft section complete the clamping transmission, the connecting structure is simple, and the installation and disassembly are convenient, effectively reduce the production and maintenance cost of material level switch.

[0019] (2) this scheme sets up the evenly distributed heat dissipation through hole in the four around heat dissipation piece, plays the effect of air heat dissipation to first shaft section, connecting piece and second shaft section, and the structure of long round hole and connecting piece can normally second shaft section's heat dissipation distance, plays better heat dissipation effect, cooperates segmented transmission shaft, can effectively reduce the influence of driving motor by the temperature in second bin.

[0020] (3) this scheme is limited to first shaft section, connecting piece and second shaft section through heat dissipation piece, so that first shaft section and second shaft section can be clamped in the clamping groove in the two ends of connecting piece, based on elastic pin realizes the transmission of two shaft sections, and the installation structure is simple, convenient for later maintenance, and the production and maintenance cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure diagram of the material level switch provided by the utility model is provided.

[0022] Figure 2 The structure diagram of the heat dissipation piece provided by the utility model is provided.

[0023] Figure 3 The structure diagram of the connecting piece provided by the utility model is provided.

[0024] In the drawing: 1, driving motor, 2, transmission part, 3, blade, 21, first shaft section, 22, connecting piece, 23, second shaft section, 24, heat dissipation piece, 25, protection cylinder, 26, mounting piece, 31, handle; 241, heat dissipation through hole, 221, first clamping groove, 222, second clamping groove, 211, first elastic pin, 231, second elastic pin. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantage of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model below, obviously, the described embodiments are a part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application.

[0027] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0029] It should be noted that the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0030] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] Example 1

[0032] As Figure 1As shown, the embodiment provides a high-temperature-resistant anti-rotation material level switch, which comprises a driving motor 1, a transmission member 2 and a blade 3. The transmission member 2 comprises a first shaft section 21, a connecting member 22, a second shaft section 23, a heat dissipation member 24 and a protection cylinder 25. The driving motor 1 is connected with the first shaft section 21. The second shaft section 23 is rotatably fixed in the protection cylinder 25. The two ends of the connecting member 22 are respectively clamped with the first shaft section 21 and the second shaft section 23. The end of the second shaft section 23 away from the connecting member 22 is connected with the blade 3. One end of the heat dissipation member 24 is connected with the driving motor 1, and the other end is connected with the protection cylinder 25. The connecting member 22 is located inside the heat dissipation member 24.

[0033] The scheme adopts a two-section transmission shaft, and connects the driving motor 1 and the blade 3 through the connecting member 22, which can effectively reduce the conduction of the high temperature in the detection bin to the driving motor 1 through the transmission shaft, has a good heat dissipation effect, reduces the risk of damage of the driving motor, and increases the service life of the material level switch in a high-temperature environment. The protection cylinder 25 is connected with the driving motor 1 through the heat dissipation member 24, so that the first shaft section 21, the connecting member 22 and the second shaft section 23 complete clamping transmission. The connecting structure is simple, convenient to install and disassemble, and can effectively reduce the production and maintenance cost of the material level switch.

[0034] Preferably, as shown in the drawings, Figure 2 As shown, the side wall of the heat dissipation member 24 is provided with a heat dissipation through hole 241 with a hollow structure. The heat dissipation through hole 241 is a long circular hole distributed along the axial direction of the heat dissipation member 24. The materials of the connecting member and the heat dissipation member are both aluminum alloy.

[0035] Further, the number of heat dissipation through holes 241 is multiple, and each heat dissipation through hole 241 is uniformly distributed along the circumferential direction of the heat dissipation member 24. In this embodiment, four heat dissipation through holes 241 in the shape of long circular holes are arranged on one circumference of the heat dissipation member 24, and air heat dissipation is formed for the transmission shaft.

[0036] The heat dissipation through holes are uniformly distributed around the heat dissipation member, which has the effect of air heat dissipation for the first shaft section, the connecting member and the second shaft section. The structure of the long circular hole and the connecting member can normally dissipate heat from the second shaft section, which has a better heat dissipation effect. In combination with the segmented transmission shaft, the driving motor can be effectively reduced by the influence of the temperature in the second bin. The connecting member 22 and the heat dissipation member 24 are most preferably made of a material that can easily dissipate heat, which can cooperate with the heat dissipation through hole to improve the heat dissipation efficiency, reduce the temperature received by the first shaft section, and further protect the driving motor.

[0037] Preferably, as shown in the drawings, Figure 3As shown, the two ends of the connecting piece 22 are respectively provided with a first clamping groove 221 and a second clamping groove 222 in the radial direction, the first shaft segment 21 is provided with a first elastic pin 211 matched with the first clamping groove 221 in the radial direction at one end close to the connecting piece 22, the first elastic pin 211 is clamped in the first clamping groove 221, and the second shaft segment 23 is provided with a second elastic pin 231 matched with the second clamping groove 222 in the radial direction at one end close to the connecting piece 22, the second elastic pin 231 is clamped in the second clamping groove 222.

[0038] Further, the opening directions of the first clamping groove 221 and the second clamping groove 222 are perpendicular to each other. The stability and reliability of the clamping of the two shaft segments and the connecting piece are improved. The distance between the first shaft segment and the second shaft segment is greater than the distance between the bottoms of the first clamping groove and the second clamping groove and is less than the length of the connecting piece, so that the connecting piece 22 can slide in the axial direction, the installation and disassembly are facilitated, and if damaged, only the new connecting piece 22 needs to be replaced, which reduces the later operation and maintenance cost compared with the replacement of the entire switch.

[0039] Further, the length of the first elastic pin 211 is greater than the inner diameter of the connecting piece 22 and is less than the outer diameter of the connecting piece 22; the length of the second elastic pin 231 is greater than the inner diameter of the connecting piece 22 and is less than the outer diameter of the connecting piece 22. The elastic pin can be clamped in the clamping groove and located inside the connecting piece.

[0040] The protection cylinder 25 is provided with a mounting piece 26 at one end close to the heat dissipation piece 24, the protection cylinder 25 is provided with an external thread at one end of the mounting piece 26 close to the heat dissipation piece 24, the driving motor 1 is provided with a threaded end, and the heat dissipation piece 24 is provided with an internal thread at both ends, and the heat dissipation piece 24 is threadedly connected with the heat dissipation piece 24 and the protection cylinder 25.

[0041] The first shaft segment, the connecting piece and the second shaft segment are limited by the heat dissipation piece, so that the first shaft segment and the second shaft segment can be clamped in the clamping grooves at both ends of the connecting piece, the transmission of the two shaft segments is realized based on the elastic pin, the installation structure is simple, the later maintenance is facilitated, and the production and maintenance costs are low.

[0042] In the embodiment, bearings are mounted at both ends of the protection cylinder 25, and the second shaft segment 23 is rotatably fixed in the protection cylinder 25 through the bearings. The bearing at one end of the protection cylinder 25 close to the heat dissipation piece 24 is sealed by a high-temperature-resistant oil seal. The bearing can be a high-temperature-resistant bearing to improve the stability of the transmission. The blade 3 is provided with a cylindrical tool handle 31, the second shaft segment 23 is inserted into the tool handle 31 and fixed by bolts. Moreover, the thickness of the protection cylinder 25 is thickened to improve the wear resistance. In combination with the high-temperature-resistant bearing and the oil seal, the service life of the device is effectively prolonged.

[0043] In the working process, the second shaft section is affected by the detection environment and the rotating operation, and has a large temperature rise and upward conduction, but the segmented structure plays a heat insulation role, and the heat on the second shaft section is first conducted to the connecting piece, thereby preliminarily reducing the heat conducted to the first shaft section. Moreover, the connecting piece is made of a material easy to dissipate heat, and is matched with the heat dissipation through holes arranged around the heat dissipation piece, so that air heat dissipation can be effectively utilized, heat dissipation of the connecting piece is accelerated, a good heat dissipation effect is achieved, and the heat conducted to the first shaft section and the driving motor is effectively reduced. Therefore, the influence of the detection environment temperature on the driving motor can be effectively reduced, the use safety of the driving motor is improved, and the service life is effectively prolonged.

[0044] The preferred embodiments of the utility model are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the conception of the utility model. Therefore, any technical scheme obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the conception of the utility model shall be within the protection scope defined by the claims.

Claims

1. A high temperature resistant, anti-rotation material level switch comprising a drive motor (1), a transmission member (2) and a vane (3), characterized in that, The transmission member (2) comprises a first shaft section (21), a connecting member (22), a second shaft section (23), a heat dissipation member (24) and a protective cylinder (25); the driving motor (1) is connected with the first shaft section (21), the second shaft section (23) is rotatably fixed in the protective cylinder (25), the two ends of the connecting member (22) are respectively clamped with the first shaft section (21) and the second shaft section (23), one end of the second shaft section (23) away from the connecting member (22) is connected with the blade (3), one end of the heat dissipation member (24) is connected with the driving motor (1), and the other end is connected with the protective cylinder (25), and the connecting member (22) is located in the heat dissipation member (24).

2. A high temperature resistant, spin-resistant level switch according to claim 1, wherein, The side wall of the heat dissipation member (24) is provided with a heat dissipation through hole (241) with a hollow structure, the heat dissipation through hole (241) is a long circular hole distributed along the axial direction of the heat dissipation member (24), and the materials of the connecting member (22) and the heat dissipation member (24) are both aluminum alloy.

3. A high temperature resistant, spin-resistant level switch according to claim 2, wherein, The number of the heat dissipation through holes (241) is multiple, and each heat dissipation through hole (241) is uniformly distributed along the circumferential direction of the heat dissipation member (24).

4. A high temperature resistant, spin-resistant level switch according to claim 1, wherein, The two ends of the connecting member (22) are respectively provided with a first clamping groove (221) and a second clamping groove (222) in the radial direction, one end of the first shaft section (21) close to the connecting member (22) is provided with a first elastic pin (211) matched with the first clamping groove (221) in the radial direction, the first elastic pin (211) is clamped in the first clamping groove (221), and one end of the second shaft section (23) close to the connecting member (22) is provided with a second elastic pin (231) matched with the second clamping groove (222) in the radial direction, the second elastic pin (231) is clamped in the second clamping groove (222).

5. A high temperature resistant, spin-resistant level switch according to claim 4, wherein, The opening directions of the first clamping groove (221) and the second clamping groove (222) are perpendicular to each other, the distance between the first shaft section (21) and the second shaft section (23) is greater than the distance between the groove bottoms of the first clamping groove (221) and the second clamping groove (222), and is less than the length of the connecting member (22).

6. A high temperature resistant, spin-resistant level switch according to claim 4, wherein, The length of the first elastic pin (211) is greater than the inner diameter of the connecting member (22) and less than the outer diameter of the connecting member (22); the length of the second elastic pin (231) is greater than the inner diameter of the connecting member (22) and less than the outer diameter of the connecting member (22).

7. A high temperature resistant, spin-resistant level switch according to claim 1, wherein, One end of the protective cylinder (25) close to the heat dissipation member (24) is provided with a mounting member (26), one end of the protective cylinder (25) close to the heat dissipation member (24) is provided with an external thread, the driving motor (1) is provided with a threaded end, both ends of the heat dissipation member (24) are provided with internal threads, and the heat dissipation member (24) is threadedly connected with the heat dissipation member (24) and the protective cylinder (25).

8. A high temperature resistant, spin-resistant level switch according to claim 1, wherein, Both ends of the protective cylinder (25) are provided with bearings, and the second shaft section (23) is rotatably fixed in the protective cylinder (25) through the bearings.

9. A high temperature resistant, spin-resistant level switch according to claim 8, wherein, The bearing at one end of the protective cylinder (25) close to the heat dissipation member (24) is sealed by a high-temperature-resistant oil seal.

10. A high temperature resistant, spin-resistant level switch according to claim 1, wherein, The blade (3) is provided with a cylindrical tool handle (31), the second shaft section (23) is inserted into the tool handle (31) and is fixed by bolts.

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