Sealing device for wire inlet of motor junction box
By designing the combination of lower and upper pressure covers at the inlet of the motor junction box, and using rubber sealing strips and elastic material pressing strips, the problem of water inlet of the motor junction box is solved, the sealing effect is achieved, the cost of spare parts is reduced and the production is improved efficiency.
Patent Information
- Application Number
- CN202323446998.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-18
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-18
AI Technical Summary
The seal of the motor junction box in the cooling tower of the steel mill is damaged and water is inlet, causing the motor winding to burn, increasing spare parts consumption.
A motor junction box inlet sealing device is designed, using a combination of lower pressure cover and upper pressure cover, and a rubber sealing strip is tightly fitted with elastic material, preventing water from entering, and fixing the wires through the clasp to ensure the sealing effect.
Effectively prevent water from entering the motor, reduce spare parts costs, improve production efficiency, and avoid motor damage.
Smart Images
Figure CN222215154U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of motor junction boxes, and in particular relates to a sealing device for a wire inlet of a motor junction box. Background Art
[0002] The cooling tower of the steel plant's central pump station is used all the time. If the seal of the cooling tower motor junction box inlet is damaged and water enters, it will cause the cooling tower motor winding to be grounded and burned, resulting in increased consumption of spare parts.
[0003] In order to solve the above problems, a device is developed to effectively prevent water from entering the motor from the inlet of the motor junction box. Through observation and analysis of the motor junction box on site, the inlet of the motor junction box is made into a single-port inlet and the inlet is changed to a gland-type inlet. Utility Model Content
[0004] In view of the problems existing in the prior art, the utility model provides a sealing device for a wire inlet of a motor junction box.
[0005] The utility model is implemented as follows: a sealing device for a motor junction box inlet, comprising a sealing device body sealed and connected to the motor junction box inlet, the sealing device body comprising a lower pressure cover and a detachable upper pressure cover connected to the lower pressure cover; the characteristic is that: sealing strips are arranged on the left and right sides of the lower pressure cover and on the side close to the motor junction box, and lower pressure cover positioning parts are also arranged on the outer sides of the left and right sides of the lower pressure cover; the upper pressure cover comprises an upper pressure cover body, and the side edges of the upper pressure cover body are tightly fitted with the sealing strips to prevent water from entering the sealing device body; upper pressure cover positioning parts are also arranged on the outer sides of the left and right sides of the upper pressure cover, and the upper pressure cover and the lower pressure cover are fixedly connected through the upper pressure cover positioning parts and the lower pressure cover positioning parts.
[0006] Furthermore, a lower pressure strip is fixedly provided inside the lower pressure cover, and the lower pressure strip is arranged perpendicular to the incoming line direction; an upper pressure strip is fixedly provided inside the upper pressure cover, and the upper pressure strip is arranged corresponding to the lower pressure strip. After the upper pressure cover and the lower pressure cover are assembled, the upper pressure strip and the lower pressure strip form a tight fit and press the wires therebetween to prevent water from flowing into the sealing device body along the wires.
[0007] Furthermore, the upper pressure strip is made of elastic material, is arranged in four strips, and is arranged in a slight arc shape toward the motor junction box; the lower pressure strip is made of elastic material, is arranged in four strips, and is arranged in a slight arc shape toward the motor junction box.
[0008] Furthermore, the elastic material is rubber.
[0009] Furthermore, the lower pressure cover is provided with clamp positioning parts near both sides of the wire inlet, and the clamp positioning parts are fixedly connected with clamps, and the clamps fix the wires at the wire inlet of the sealing device body.
[0010] Furthermore, a lower connecting hole is provided in the middle of the lower pressure cover positioning portion, and an upper connecting hole is provided in the middle of the upper pressure cover positioning portion; the lower connecting hole and the upper connecting hole are fixedly connected by fasteners.
[0011] The utility model has the following advantages and technical effects: the utility model utilizes the elastic characteristics of the rubber pressure strip by means of a pressure cover to prevent water from entering the junction box along the wires; the device is sealed by a sealing strip to prevent water from entering the motor junction box and causing damage to the motor; the motor wire inlet is sealed to effectively prevent water from entering the inside of the motor and causing damage to the motor; the spare parts cost is effectively reduced and production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;
[0013] Figure 2 It is a top view of the lower gland provided by the embodiment of the utility model;
[0014] Figure 3 This is a bottom view of the upper gland provided by the embodiment of the utility model;
[0015] Figure 4 It is a schematic diagram of the clamp structure provided by an embodiment of the utility model.
[0016] In the figure: 1. Sealing device body; 2. Upper pressure cover; 3. Lower pressure cover; 4. Sealing strip; 5. Upper pressure cover positioning part; 6. Lower pressure cover positioning part; 7. Upper pressure strip; 8. Lower pressure strip; 9. Clamp; 10. Side; 11. Clamp positioning part; 12. Electric wire. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.
[0018] See also Figures 1 to 4A sealing device for the inlet of a motor junction box comprises a sealing device body 1 which is sealed and connected to the inlet of the motor junction box, wherein the sealing device body 1 comprises a lower pressure cover 3 and an upper pressure cover 2 which is detachably connected to the lower pressure cover 3; upper pressure cover positioning parts 5 are also arranged on the outer sides of the left and right sides of the upper pressure cover 2, and an upper connecting hole is arranged in the middle of the upper pressure cover positioning part 5; sealing strips 4 are arranged on the left and right sides of the lower pressure cover 3 and on the side close to the motor junction box, and a lower pressure strip 8 is fixedly arranged inside the lower pressure cover 3, and the lower pressure strip 8 is arranged perpendicular to the inlet direction; the lower pressure strip 8 is made of elastic material, preferably rubber, and is arranged in four strips, which are arranged in a slightly arc shape toward the motor junction box.
[0019] The lower pressure cover 3 is also provided with a lower pressure cover positioning portion 6 on the outer sides of the left and right sides, and a lower connecting hole is provided in the middle of the lower pressure cover positioning portion 6; the lower connecting hole and the upper connecting hole are fixedly connected by fasteners, thereby fixing the upper pressure cover 2 and the lower pressure cover 3.
[0020] The upper pressure cover 2 includes a side corresponding to the sealing strip 4, and the side 10 is tightly fitted with the sealing strip 4 to prevent water from entering the sealing device body 1; an upper pressure strip 7 is fixedly arranged inside the upper pressure cover 2, and the upper pressure strip 7 is made of elastic material, preferably rubber, and is arranged in four strips, which are arranged in a slight arc shape toward the motor junction box; the upper pressure strip 7 is arranged corresponding to the lower pressure strip 8. After the upper pressure cover 2 and the lower pressure cover 3 are assembled, the upper pressure strip 7 and the lower pressure strip 8 form a tightly fitting state, and press the wire 12 therebetween to prevent water from flowing into the sealing device body 1 along the wire 12.
[0021] Furthermore, the lower pressure cover 3 is provided with a clamp positioning portion 11 on both sides near the wire inlet, and the clamp positioning portion 11 is fixedly connected with a clamp 9, and the clamp 9 is a metal sheet. The elastic deformation of the clamp 9 is used to fix the wire 12 at the wire inlet of the sealing device body 1 to prevent the wire 12 from swinging freely at the wire inlet of the sealing device body 1, causing damage to the wire 12 and the internal structure of the sealing device body 1.
[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A sealing device for a motor terminal box inlet, comprising a sealing device body (1) sealed and connected to the motor terminal box inlet, the sealing device body (1) comprising a lower gland (3), and a detachable upper gland (2) connected to the lower gland (3); characterized in that: The left and right sides of the lower pressure cover (3) and the side close to the motor junction box are provided with sealing strips (4), and the outer sides of the left and right sides of the lower pressure cover (3) are also provided with lower pressure cover positioning parts (6); the side edges (10) of the upper pressure cover (2) are tightly fitted with the sealing strips (4) to prevent water from entering the sealing device body (1); the outer sides of the left and right sides of the upper pressure cover (2) are also provided with upper pressure cover positioning parts (5), and the upper pressure cover (2) and the lower pressure cover (3) are fixedly connected via the upper pressure cover positioning parts (5) and the lower pressure cover positioning parts (6).
2. The sealing device for the inlet of the motor junction box according to claim 1, characterized in that: A lower pressure strip (8) is fixedly arranged inside the lower pressure cover (3), and the lower pressure strip (8) is arranged perpendicular to the incoming line direction; an upper pressure strip (7) is fixedly arranged inside the upper pressure cover (2), and the upper pressure strip (7) and the lower pressure strip (8) are arranged correspondingly. After the upper pressure cover (2) and the lower pressure cover (3) are assembled, the upper pressure strip (7) and the lower pressure strip (8) form a tightly fitting state, and the wire (12) is pressed therebetween to prevent water from flowing into the sealing device body (1) along the wire (12).
3. The sealing device for the inlet of the motor junction box according to claim 2, characterized in that: The upper pressure strip (7) is made of elastic material, is arranged in four strips, and is arranged in a slightly arc shape toward the motor junction box; the lower pressure strip (8) is made of elastic material, is arranged in four strips, and is arranged in a slightly arc shape toward the motor junction box.
4. The sealing device for the inlet of the motor junction box according to claim 3, characterized in that: The elastic material is rubber.
5. The sealing device for the inlet of the motor junction box according to claim 1, characterized in that: The lower pressure cover (3) is provided with clamp positioning parts (11) near both sides of the wire inlet, and the clamp positioning parts (11) are fixedly connected with clamps (9), and the clamps (9) fix the wires (12) at the wire inlet of the sealing device body (1).
6. The sealing device for the inlet of the motor junction box according to claim 1, characterized in that: A lower connecting hole is provided in the middle of the lower pressure cover positioning portion (6), and an upper connecting hole is provided in the middle of the upper pressure cover positioning portion (5); the lower connecting hole and the upper connecting hole are fixedly connected by fasteners.