Underwater backflow prevention nozzle

Abstract

The utility model provides an underwater anti-backflow nozzle: comprising a nozzle body, a water flow channel for liquid medicine to flow in the nozzle body, an anti-backflow mechanism in the water flow channel, the anti-backflow mechanism comprising an openable and closable splint assembly, the splint assembly comprising two splints, one end of the two splints being hinged by a rotating shaft to form a V-shape, the hinged end of the splint assembly facing the input port of the water flow channel, the open end of the splint assembly facing the output port of the water flow channel, and the non-hinged ends of the two splints abutting against the side wall of the water flow channel. The utility model has a reasonable design, and solves the problem that when dripping liquid medicine into the existing sewage treatment pool, the sewage in the sewage pool flows, and the sewage flows back into the liquid medicine pool through the liquid medicine output pipe, and the utility model is easy to use and convenient for professional sewage treatment.

Description

Technical Field

[0001] The utility model relates to an underwater anti-backflow nozzle. Background Art

[0002] At present, it is necessary to add liquid medicine to the sewage treatment pool in a timely manner during sewage treatment. Under normal circumstances, the output port of the liquid medicine output pipe is directly inserted into the sewage treatment pool. Due to the flow of sewage in the sewage pool, when the liquid medicine is output, there is a problem that the sewage flows back into the liquid medicine output pipe and flushes into the liquid medicine pool. Summary of the invention

[0003] In view of this, the purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and provide an underwater anti-backflow nozzle.

[0004] The present invention is implemented by the following scheme: an underwater anti-backflow nozzle: comprising a nozzle body, a water flow channel for the flow of liquid medicine is arranged in the nozzle body, an anti-backflow mechanism is arranged in the water flow channel, the anti-backflow mechanism comprises an openable and closable splint assembly, the splint assembly comprises two splints, one end of the two splints are hinged by a rotating shaft to form a V-shape, the hinged end of the splint assembly faces the input port of the water flow channel, the open end of the splint assembly faces the output port of the water flow channel, and the non-hinged ends of the two splints are against the side walls of the water flow channel.

[0005] Furthermore, ear plates are symmetrically arranged on one end of the plate surface of the splint, and hinge holes are arranged on the ear plates corresponding to the rotating shaft. The hinge holes on the ear plates on the same side of the two splints are connected to form a hinge seat, and the rotating shaft is rotatably connected between the two hinge seats.

[0006] Furthermore, a torsion spring is sleeved on the shaft section of the rotating shaft between the two hinged seats, and two ends of the torsion spring are respectively connected to the two clamping plates.

[0007] Furthermore, the rotating shaft passes through the hinge seat and extends out to form an extended end, and a rotating hole is provided on the inner wall of the water flow channel corresponding to the extended end.

[0008] Furthermore, the water flow channel is a square channel, and the width of the water flow channel is the same as the width of the clamping plate.

[0009] Furthermore, an inclined limit block for preventing the clamping plate from over-turning is provided on the pipe wall of the water flow channel.

[0010] Furthermore, a constriction is provided on the output end of the water flow channel.

[0011] Furthermore, the outer wall of the nozzle body is in a circular tube shape, and a thread is arranged on the outer wall of the input end of the nozzle body.

[0012] Compared with the prior art, the present invention has the following beneficial effects: reasonable design, solving the problem that when the existing sewage treatment pool is dripping with liquid medicine, the sewage in the sewage pool flows and the sewage flows back into the liquid medicine pool through the liquid medicine output pipe; and easy to use, facilitating professional sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0015] In the figure: 1-nozzle body; 2-water flow channel; 3-clamp assembly; 4-clamp; 5-ear plate; 6-hinge hole; 7-hinge seat; 8-extending end; 9-rotating hole; 10-square channel; 11-tilt limit block; 12-recessed mouth; 13-thread; 14-torsion spring; 15-rotating shaft. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0018] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0019] like Figure 1-2As shown, an underwater anti-backflow nozzle: it includes a nozzle body 1, a water flow channel 2 for the circulation of liquid medicine is arranged in the nozzle body, an anti-backflow mechanism is arranged in the water flow channel, the anti-backflow mechanism includes an openable and closable splint assembly 3, the splint assembly includes two splints 4, one end of the two splints are hinged by a rotating shaft 15 to form a V shape, the hinged end of the splint assembly faces the input port of the water flow channel, the open end of the splint assembly faces the output port of the water flow channel, the non-hinged ends of the two splints are opened and pressed against the side wall of the water flow channel, ear plates 5 are symmetrically arranged on the left and right sides of one end of the plate surface of the splint, and hinge holes 6 are arranged on the ear plates corresponding to the rotating shaft, the hinge holes on the ear plates on the same side of the two splints are butt-jointed to form a hinge seat 7, and the two ear plates on one splint are located on the outside, and the two ear plates on the other splint are located on the outside. The two ear plates are located on the inner side, and the ear plates on the same side of the two clamps fit together to realize the docking of the hinge holes to form left and right hinge seats, and the rotating shaft is rotatably connected between the two hinge seats, and a torsion spring 14 is sleeved on the shaft section of the rotating shaft between the two hinge seats, and the two ends of the torsion spring are respectively connected to the two clamps. When in use, since the hinged end of the clamp assembly faces the input port of the water flow channel and the open end of the clamp assembly faces the output port of the water flow channel, when the liquid medicine is output, under the impact of the liquid medicine, the angle between the two clamps is reduced, and the liquid medicine is output. When there is no liquid medicine output, the angle between the two clamps increases under the action of the torsion spring, so that the movable end of the clamp opens and abuts against the side wall of the water flow channel, and at the same time, one end of the hinge seat of the two clamps abuts together to realize the closure of the water flow channel, thereby avoiding the problem of sewage flowing back into the liquid medicine pool through the liquid medicine output pipe.

[0020] In this embodiment, for the sake of reasonable design and convenient installation of the splint assembly, the rotating shaft extends through the hinge seat to form an extended end 8, and a rotating hole 9 is provided on the inner wall of the water flow channel corresponding to the extended end, and the installation of the splint assembly is achieved through the cooperation of the rotating hole and the extended end.

[0021] In this embodiment, in order to achieve reasonable design and closure of the water flow channel, the water flow channel is a square channel 10, and the width of the water flow channel is the same as the width of the clamping plate.

[0022] In this embodiment, in order to achieve the fixation of the extreme position of the splint assembly and to facilitate the fixation of the opened splint assembly, an inclined limit block 11 is provided on the tube wall of the water flow channel for preventing the splint from excessively flipping over, that is, an inclined limit block is provided on the middle part of the tube wall of the water flow channel corresponding to the movable end of the splint for preventing the splint from excessively flipping over.

[0023] In this embodiment, in order to further reduce sewage backflow, a constriction 12 is provided on the output end of the water flow channel.

[0024] In this embodiment, in order to realize the installation of the nozzle body, the outer wall of the nozzle body is in a circular tube shape, and a thread 13 is provided on the outer wall of the input end of the nozzle body.

[0025] Unless otherwise stated, any technical solution disclosed in the above utility model, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many feasible numerical values. Since there are too many numerical values ​​to be exhaustive, the utility model discloses only some numerical values ​​to illustrate the technical solution of the utility model, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the utility model.

[0026] If the words "first", "second" and so on are used in this article to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of description to distinguish the components. Unless otherwise stated, the above words have no special meaning.

[0027] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0028] In addition, the orientations or positional relationships indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" used in any of the technical solutions disclosed in the above-mentioned utility model are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent. Unless otherwise stated, the terms used to indicate shapes used in any of the technical solutions disclosed in the above-mentioned utility model include shapes that are approximate, similar or close to them.

[0029] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. An underwater anti-backflow nozzle, characterized in that: It includes a nozzle body, a water flow channel for the flow of liquid medicine is arranged in the nozzle body, an anti-backflow mechanism is arranged in the water flow channel, the anti-backflow mechanism includes an openable and closable splint assembly, the splint assembly includes two splints, one end of the two splints are hinged by a rotating shaft to form a V shape, the hinged end of the splint assembly faces the input port of the water flow channel, the open end of the splint assembly faces the output port of the water flow channel, and the non-hinged ends of the two splints are against the side walls of the water flow channel.

2. The underwater anti-backflow nozzle according to claim 1, characterized in that; The plate surface of the splint is symmetrically provided with ear plates on one end side, and hinge holes are provided on the ear plates corresponding to the rotating shafts. The hinge holes on the ear plates on the same side of the two splints are connected to form a hinge seat, and the rotating shaft is rotatably connected between the two hinge seats.

3. The underwater anti-backflow nozzle according to claim 2, characterized in that; A torsion spring is sleeved on the shaft section of the rotating shaft between the two hinge seats, and two ends of the torsion spring are respectively connected to the two clamping plates.

4. The underwater anti-backflow nozzle according to claim 3, characterized in that; The rotating shaft extends through the hinge seat to form an extended end, and a rotating hole is arranged on the inner wall of the water flow channel corresponding to the extended end.

5. The underwater anti-backflow nozzle according to claim 1, characterized in that; The water flow channel is a square channel, and the width of the water flow channel is the same as the width of the clamping plate.

6. The underwater anti-backflow nozzle according to claim 1, characterized in that; An inclined limiting block for preventing the clamping plate from over-turning is arranged on the pipe wall of the water flow channel.

7. The underwater anti-backflow nozzle according to claim 1, characterized in that; A constriction is arranged on the output end of the water flow channel.

8. The underwater anti-backflow nozzle according to claim 1, characterized in that; The outer wall of the nozzle body is in a circular tube shape, and a thread is arranged on the outer wall of the input end of the nozzle body.

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