A float switch weight

Abstract

This utility model relates to the field of switch counterweight technology, and discloses a float switch counterweight, including a housing, with a through tube fixed inside the housing. One end of the through tube has an arc-cone structure at its connection with the housing, and the other end has an array of protrusions. The protrusions are connected to the inner wall of the through tube, and the radius of the inscribed circle of the protrusion is not greater than the diameter of the switch cable. The protrusions have a flat surface with an anti-slip structure. In this utility model, the through holes on the housing and the cover are all central holes, which will not cause the housing to shift during use, nor will it cause excessive pressure on one side of the cable, thus protecting the cable insulation layer. At the same time, the protrusions are designed with rounded corners, which contact the cable insulation layer, providing stable fixation of the cable and reducing damage to the cable. The fixing surface between the protrusions and the cable is small, so there is no need to excessively compress the cable, and there is no situation where sharp corners cut the insulation layer, protecting the safety of the switch cable. During application, the position of the counterweight is fixed and it is not easy to damage the cable.

Description

Technical Field

[0001] This utility model relates to the field of switch counterweight technology, specifically a float switch counterweight. Background Technology

[0002] A float switch is a liquid level control device used for sensing and controlling the water surface level. It does not require a power supply and has advantages such as small size and long life.

[0003] In the prior art, such as the application with application number CN201120041791.4, the subject is: A counterweight for a liquid level float switch, which includes a counterweight cup and a counterweight cover. The top of the counterweight cup and the counterweight cover are rotatably fitted. A hollow column is provided in the center of the counterweight cover. A hollow column is provided inside the counterweight cup. An eccentric hole and a central hole that mates with the hollow column are provided at both ends of the hollow column. An eccentric hole that mates with the eccentric hole is provided on the hollow column. At least one filler is provided around the hollow column.

[0004] However, in existing technologies, the improvement of the counterweight is achieved through an eccentric structure. In practical applications, the cable is clamped by misaligning the eccentric holes in the cup and the cap. At this time, the edges of the holes will exert shear force on the cable insulation layer, which will cause damage to the cable insulation layer over time. When the cable is not clamped firmly, the movement of the counterweight will cause scratches and damage to the cable insulation layer. Utility Model Content

[0005] The purpose of this invention is to provide a float switch counterweight to solve the problems in the prior art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A float switch counterweight, the float switch counterweight includes a housing, a through pipe is fixedly provided inside the housing, one end of the through pipe is provided with an arc cone structure at the connection with the housing, and the other end is provided with an array of protrusions;

[0008] The protrusion is connected to the inner wall of the conduit. The radius of the inscribed circle of the protrusion is not greater than the diameter of the switch cable. The protrusion has a flat surface for contacting the cable, and the flat surface has an anti-slip structure.

[0009] Furthermore, a cap is fixedly provided at one end of the shell, and a counterweight compartment for filling counterweights is formed between the through pipe and the inner wall of the shell.

[0010] Furthermore, the conduit is either a tapered pipe or a straight pipe.

[0011] Furthermore, the arc-cone structure is trumpet-shaped.

[0012] Furthermore, the protrusions are arranged in an array along the circumferential axis of the through pipe, and the protrusions are fixedly connected to the inner wall of the through pipe.

[0013] Furthermore, the protrusion has transition arc surfaces on both sides and side arc surfaces at both ends of the plane.

[0014] Furthermore, the anti-slip structure includes grooves or protrusions to increase the firmness of the connection between the protrusions and the switch cable.

[0015] The beneficial effects of this utility model are:

[0016] 1. The float switch counterweight of this utility model has all the wire holes on the housing and the cover as center holes, which will not cause the housing to shift during use, nor will it cause excessive pressure on one side of the cable, thus protecting the cable insulation layer. At the same time, it is designed with rounded protrusions at the corners, which contact the cable insulation layer to fix the cable stably and reduce damage to the cable.

[0017] 2. The float switch counterweight of this utility model has a small fixing surface between the protrusion and the cable, so there is no need to excessively squeeze the cable and there will be no sharp corners cutting the insulation layer, thus protecting the safety of the switch cable. During the application process, the position of the counterweight is fixed and the cable is not easily damaged when it moves back and forth. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the structure of the hammer of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the hammer of this utility model;

[0021] Figure 3 This is a front view of the hammer of this utility model;

[0022] Figure 4 This is a utility model Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0023] Figure 5 This is a utility model Figure 4 Enlarged structural diagram at point B;

[0024] Figure 6 This is a schematic diagram of the internal structure of the hammer of this utility model.

[0025] The attached diagram is described below:

[0026] 1. Shell; 2. Cover; 11. Arc-cone structure; 12. Counterweight compartment; 13. Through pipe; 14. Protrusion; 15. Transition arc surface; 16. Side arc surface; 17. Plane. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] A float switch counterweight, such as Figure 1 As shown, the float switch counterweight includes a housing 1, and a cover 2 is provided at one end of the housing 1. The cover 2 is fixedly connected to the housing 1.

[0029] like Figures 2-6 As shown, a through pipe 13 is fixedly installed inside the housing 1. The through pipe 13 is a tapered pipe or a straight pipe. One end of the through pipe 13 is fixedly connected to the housing 1. An arc-cone structure 11 is provided at the connection. The arc-cone structure 11 is trumpet-shaped. Its main function is to allow the wire to enter and prevent the sharp corners at the connection between the housing 1 and the through pipe 13 from scratching the insulation layer on the surface of the wire. The outer side of the arc-cone structure 11 is an arc surface. After the wire passes through the arc-cone structure 11, the arc surface slides against the insulation layer of the wire to ensure the safety of the outer layer of the wire.

[0030] A counterweight chamber 12 is formed between the through pipe 13 and the inner wall of the shell 1. A heavy object or counterweight material is placed in the counterweight chamber 12 to increase the weight of the hammer. After the cover 2 is fastened to the shell 1, it can seal the counterweight chamber 12 to ensure that the heavy object or counterweight material will not fall off. The cover 2 has a through hole, which is fastened to one end of the through pipe 13 to support the through pipe 13 and maintain the position of the through pipe 13.

[0031] One end of the tube 13 is connected to the arc-cone structure 11, and the other end is provided with a number of protrusions 14. The protrusions 14 are arranged in an array along the inner circumference axis of the tube 13, and the protrusions 14 are fixedly connected to the inner wall of the tube 13. The two sides of the protrusions 14 are provided with transition arc surfaces 15. The transition arc surfaces 15 are located on both sides of the protrusions 14 to optimize the corners on both sides of the protrusions 14 and reduce the wear of the protrusions 14 on the wire insulation layer.

[0032] A plane 17 is provided on the protrusion 14, and two side arc surfaces 16 are provided at both ends of the plane 17. The two side arc surfaces 16 are located at the two ends of the plane 17 respectively, which can ensure that the wire can pass smoothly between several protrusions 14.

[0033] In this embodiment, an anti-slip structure is provided on the plane 17. The anti-slip structure includes grooves or protrusions. The grooves are formed on the plane 17, and the protrusions are fixedly set on the plane 17. By adding protrusions or grooves, the surface friction of the plane 17 is increased, ensuring the stable connection between the counterweight and the cable and reducing the probability of the counterweight slipping. The radius of the inscribed circle of several protrusions 14 is not greater than the diameter of the cable, so as to ensure that the protrusions 14 fix the cable.

[0034] During use, the counterweight material is placed in the counterweight chamber 12, and then the switch cable passes through the housing 1 and the cover 2 is fastened. The cable passes through the tube 13 inside the housing 1, and the cable slides along the tube 13 from one end of the plane 17 to the other end. At this time, the cable end slides over the side arc surface 16 without obstructing the cable end, improving the smoothness of the cable sliding with the plane 17. At this time, the protrusion 14 contacts the insulation layer of the cable to fix the position of the cable. By placing the weight under the liquid surface to be measured, it is ensured that the position of the weight on the cable will not move. It is simple and reliable to use.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A float switch counterweight, characterized in that, The float switch counterweight includes a housing (1), and a through pipe (13) is fixedly provided inside the housing (1). One end of the through pipe (13) is connected to the housing (1) with an arc cone structure (11), and the other end is provided with arrayed protrusions (14). The protrusion (14) is connected to the inner wall of the tube (13). The radius of the inscribed circle of the protrusion (14) is not greater than the diameter of the switch cable. The protrusion (14) is provided with a plane (17) for contacting the cable. The plane (17) is provided with an anti-slip structure.

2. The float switch counterweight according to claim 1, characterized in that, One end of the shell (1) is fixedly provided with a cap (2), and a counterweight compartment (12) for filling counterweights is formed between the through pipe (13) and the inner wall of the shell (1).

3. The float switch counterweight according to claim 2, characterized in that, The through pipe (13) is a tapered pipe or a straight pipe.

4. The float switch counterweight according to claim 1, characterized in that, The arc-cone structure (11) is trumpet-shaped.

5. The float switch counterweight according to claim 1, characterized in that, The protrusions (14) are arranged in an array along the circumferential axis of the through pipe (13), and the protrusions (14) are fixedly connected to the inner wall of the through pipe (13).

6. The float switch counterweight according to claim 1, characterized in that, The protrusion (14) has transition arc surfaces (15) on both sides, and the plane (17) has side arc surfaces (16) at both ends.

7. The float switch counterweight according to claim 1, characterized in that, The anti-slip structure includes grooves or protrusions to increase the connection strength between the protrusion (14) and the switch cable.

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