Backwashing device for swimming pool

Abstract

The utility model relates to the technical field of swimming pool equipment, and particularly discloses a backwashing device for a swimming pool, which comprises a barrel body for providing a filter cavity, a water inlet pipe communicated with the outer wall of the barrel body, a filter screen arranged inside the barrel body, a water outlet pipe communicated with the bottom of the barrel body, and a blow-off pipe communicated with the lower position of the outer wall of the barrel body. The water outlet pipe is connected with a backwashing mechanism for washing impurities filtered on the filter screen, and a feedback mechanism which is arranged on the backwashing mechanism and is used for prompting a backwashing state. Through the arrangement of a backwashing mechanism and a feedback mechanism, when too many impurities are filtered between the filter screen and the inner wall of the barrel body, the feedback mechanism prompts personnel, then a second valve body is closed, a first valve body, a third valve body and a pump body are opened, the pump body pumps water liquid in the swimming pool into the inner side of the filter screen, the impurities on the filter screen are washed away by the water liquid, and therefore the water liquid is recycled. Sewage is discharged from the sewage discharge pipe, so that the filter screen is prevented from being detached and cleaned, and the efficiency and convenience of cleaning the filter screen are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of swimming pool equipment, in particular to a backwashing device used in a swimming pool. Background Art

[0002] A swimming pool is a special place for people to swim, where they can exercise or compete. Most swimming pools are built on the ground and can be divided into ordinary swimming pools and heated swimming pools according to the water temperature, and can be divided into indoor and outdoor types. Generally, before adding water to the swimming pool, the water needs to be filtered to prevent particles or other substances from being directly added to the water. After the filter device has been used for a period of time, the filter needs to be cleaned to prevent clogging and affect the filtering effect. However, when cleaning the filter, the filter is mainly removed and installed again after cleaning, which makes the cleaning operation inconvenient, affects the efficiency of the filter device, and causes inconvenience to the user. Utility Model Content

[0003] The purpose of the utility model is to provide a backwashing device for a swimming pool in order to solve the above problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A backwashing device for a swimming pool comprises a barrel body for providing a filtering cavity, a water inlet pipe is connected to the outer wall of the barrel body, a filter screen is arranged inside the barrel body, a water outlet pipe is connected to the bottom of the barrel body, a sewage pipe is connected to the lower position of the outer wall of the barrel body, a backwashing mechanism for washing impurities filtered on the filter screen is connected to the water outlet pipe, and a feedback mechanism for prompting the backwashing state is arranged on the backwashing mechanism; the backwashing mechanism comprises a barrel cover installed at the upper end of the barrel body, and a return pipe connected to the water outlet pipe is arranged on the side wall of the barrel cover A pump body and a third valve body are installed on the return pipe, an L-shaped flange is provided on the lower end surface of the barrel cover, an extension ring is provided on the upper end of the filter screen, the feedback mechanism includes a movable ring arranged in the barrel body, movable rods are distributed circumferentially on the movable ring, the upper end of the movable rod passes through the flange of the barrel cover, a pressure switch is provided on the upper side of the flange, a spring is sleeved on the outer diameter of the movable rod and located on the upper side of the movable ring, a sealing ring is provided on the inner and outer diameters of the movable ring, an indicator light is installed on the upper end of the barrel cover, a first valve body is installed on the sewage pipe, and a second valve body is installed on the outlet pipe and located between the return pipe and the barrel body.

[0006] It is further arranged that the movable ring is sealingly and slidingly connected with the extension ring and the barrel body through a sealing ring, and the movable rod is slidingly connected with the flange.

[0007] Further configuration: the backwash mechanism also includes an auxiliary component arranged on the inner side of the filter screen, the auxiliary component includes a central axis, a support frame is fixed on the central axis, an impeller is installed on the upper side of the central axis, the impeller corresponds to the through hole in the barrel cover through which the return pipe enters, a support frame is fixed on the central axis in the filter screen, a brush roller is vertically arranged on the support frame, a gear is installed at the lower end of the brush roller, and an inner gear ring is arranged at the lower end of the filter screen.

[0008] Further configuration: the inner gear ring is welded to the filter screen, and the inner gear ring is connected to the barrel body by bolts.

[0009] It is further configured that the central shaft is rotatably connected to the barrel body and the barrel cover, and the brush roller is rotatably connected to the support frame.

[0010] Further configuration: the brush roller is in contact with the inner wall of the filter screen, and the gear is meshed with the inner gear ring.

[0011] It is further configured that the water outlet pipe is communicated with the inner cavity of the filter screen, and a frame is fixed at the lower end of the barrel body.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] Through the setting of the backwash mechanism and the feedback mechanism, when there are too many filtered impurities between the filter screen and the inner wall of the barrel body, the pressure between the filter screen and the inner wall of the barrel body increases, and the movable ring and the movable rod are pushed upward. When the movable rod pushes the pressure switch on the upper side, the indicator light comes on, the second valve body on the outlet pipe is closed, and the first valve body on the sewage pipe, the third valve body on the return pipe and the pump body are opened. The pump body pumps the water in the swimming pool into the inner side of the filter screen, so that the water washes away the impurities on the outer wall of the filter screen, and the sewage is discharged from the sewage pipe, so as to avoid the disassembly and cleaning of the filter screen, thereby improving the efficiency and convenience of cleaning the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is an axonometric diagram of a backwashing device used in a swimming pool according to the utility model;

[0016] Figure 2 It is a schematic diagram of the main cross-sectional structure of a backwashing device used in a swimming pool according to the utility model;

[0017] Figure 3 It is a schematic structural diagram of a backwashing device for a swimming pool in a disassembled state according to the utility model;

[0018] Figure 4 It is a half-section structural schematic diagram of a backwashing device used in a swimming pool according to the utility model;

[0019] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure at point A;

[0020] Figure 6 The utility model is a partial structural schematic diagram of a backwashing mechanism of a backwashing device used in a swimming pool.

[0021] The following are the descriptions of the reference numerals:

[0022] 1. Barrel body; 2. Filter screen; 21. Extension ring; 3. Water inlet pipe; 4. Drain pipe; 41. First valve body; 5. Water outlet pipe; 51. Second valve body; 61. Barrel cover; 62. Return pipe; 63. Pump body; 64. Third valve body; 65. Center axis; 66. Impeller; 67. Support frame; 68. Brush roller; 69. Gear; 610. Inner gear ring; 71. Movable ring; 72. Movable rod; 73. Spring; 74. Sealing ring; 75. Pressure switch; 76. Indicator light; 8. Frame. DETAILED DESCRIPTION

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figure 1-Figure 6 As shown, a backwashing device for a swimming pool includes a barrel body 1 for providing a filtering cavity, an inlet pipe 3 is connected to the outer wall of the barrel body 1, a filter screen 2 is arranged inside the barrel body 1, an outlet pipe 5 is connected to the bottom of the barrel body 1, the outlet pipe 5 is connected to the inner cavity of the filter screen 2, a frame 8 is fixed to the lower end of the barrel body 1, a sewage pipe 4 is connected to the lower position of the outer wall of the barrel body 1, a backwashing mechanism for washing the impurities filtered on the filter screen 2 is connected to the outlet pipe 5, and a feedback mechanism for prompting the backwashing state is arranged on the backwashing mechanism;

[0027] In this embodiment: the backwashing mechanism includes a barrel cover 61 installed at the upper end of the barrel body 1, a return pipe 62 connected to the outlet pipe 5 is arranged on the side wall of the barrel cover 61, a pump body 63 and a third valve body 64 are installed on the return pipe 62, an L-shaped flange is arranged on the lower end surface of the barrel cover 61, an extension ring 21 is arranged on the upper end of the filter screen 2, a first valve body 41 is installed on the sewage pipe 4, and a second valve body 51 is installed on the outlet pipe 5 between the return pipe 62 and the barrel body 1. When the filter screen 2 needs to be cleaned, the second valve body 51 on the outlet pipe 5 is closed, the first valve body 41 on the sewage pipe 4, the third valve body 64 on the return pipe 62 and the pump body 63 are opened, and the pump body 63 pumps the water in the swimming pool into the inner side of the filter screen 2, so that the water washes away the impurities on the outer wall of the filter screen 2, and the sewage is discharged from the sewage pipe 4;

[0028] The backwash mechanism also includes an auxiliary component arranged inside the filter 2, which includes a central shaft 65, a support frame 67 is fixed on the central shaft 65, an impeller 66 is installed on the central shaft 65, and the impeller 66 corresponds to the through hole through which the return pipe 62 enters the barrel cover 61, and a support frame 67 is fixed on the central shaft 65 located inside the filter 2, a brush roller 68 is vertically arranged on the support frame 67, a gear 69 is installed at the lower end of the brush roller 68, and an inner gear ring 610 is arranged at the lower end of the filter 2. The inner gear ring 610 is welded to the filter 2, and the inner gear ring 610 is connected to the barrel body 1 by bolts, the central shaft 65 is rotatably connected to the barrel body 1 and the barrel cover 61, the brush roller 68 is rotatably connected to the support frame 67, the brush roller 68 is in contact with the inner wall of the filter 2, and the gear 69 is meshed with the inner gear ring 610. When the pump body 63 pumps the water in the swimming pool into the barrel body 1 through the barrel cover 61, it pushes the impeller 66 on the central shaft 65 to rotate, so that the central shaft 65 drives the support frame 67 to rotate as a whole. During the rotation process, the gear 69 on the brush roller 68 meshes with the inner gear ring 610 and rotates. The brush roller 68 rotates to brush the filter screen 2, thereby improving the cleaning effect of the filter screen 2.

[0029] In this embodiment: the feedback mechanism includes a movable ring 71 arranged in the barrel body 1, and movable rods 72 are distributed on the circumference of the movable ring 71. The upper end of the movable rod 72 passes through the flange of the barrel cover 61, and a pressure switch 75 is arranged on the upper side of the flange. A spring 73 is sleeved on the outer diameter of the movable rod 72 on the upper side of the movable ring 71, and a sealing ring 74 is arranged on the inner and outer diameters of the movable ring 71. An indicator light 76 is installed on the upper end of the barrel cover 61; the movable ring 71 is sealed and slidably connected with the extension ring 21 and the barrel body 1 through the sealing ring 74, and the movable rod 72 is slidably connected with the flange. When there are too many filtered impurities between the filter screen 2 and the inner wall of the barrel body 1, the pressure between the filter screen 2 and the inner wall of the barrel body 1 increases, and the movable ring 71 and the movable rod 72 are pushed to overcome the elastic force of the spring 73 and move upward. When the movable rod 72 pushes the pressure switch 75 on the upper side, the indicator light 76 lights up, indicating that the filter screen 2 needs to be cleaned. After cleaning, the spring 73 pushes the movable ring 71 to slide downward to release the pressure switch 75.

[0030] The working principle and use process of the utility model are as follows: water source enters the barrel body 1 through the water inlet pipe 3, and the water filtered by the filter screen 2 enters the swimming pool through the outlet pipe 5 on the lower side. When there are too many filtered impurities between the filter screen 2 and the inner wall of the barrel body 1, the pressure between the filter screen 2 and the inner wall of the barrel body 1 increases, and the movable ring 71 and the movable rod 72 are pushed upward to overcome the elastic force of the spring 73. When the movable rod 72 pushes the pressure switch 75 on the upper side, the indicator light 76 lights up, the second valve body 51 on the outlet pipe 5 is closed, and the first valve body 41 on the sewage pipe 4 is opened. The third valve body 64 and the pump body 63 on the water pipe 62, the pump body 63 pumps the water in the swimming pool into the inner side of the filter 2, so that the water washes away the impurities on the outer wall of the filter 2, and the sewage is discharged from the sewage pipe 4. At the same time, the water pumped into the barrel body 1 drives the impeller 66 on the central shaft 65 to rotate after entering the barrel cover 61, so that the central shaft 65 drives the support frame 67 to rotate as a whole. During the rotation process, the gear 69 on the brush roller 68 meshes and rotates with the inner gear ring 610, and the brush roller 68 rotates to brush the filter 2, thereby improving the cleaning effect of the filter 2.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A backwashing device for a swimming pool, comprising a barrel (1) for providing a filtering cavity, wherein the outer wall of the barrel (1) is connected to a water inlet pipe (3), a filter screen (2) is arranged inside the barrel (1), the bottom of the barrel (1) is connected to a water outlet pipe (5), and the outer wall of the barrel (1) is connected to a sewage pipe (4) at a lower position, characterized in that: The outlet pipe (5) is connected to a backwashing mechanism for flushing impurities filtered on the filter screen (2), and a feedback mechanism arranged on the backwashing mechanism for prompting the backwashing status; the backwashing mechanism comprises a barrel cover (61) installed on the upper end of the barrel body (1), a return pipe (62) connected to the outlet pipe (5) is arranged on the side wall of the barrel cover (61), a pump body (63) and a third valve body (64) are installed on the return pipe (62), an L-shaped flange is arranged on the lower end surface of the barrel cover (61), an extension ring (21) is arranged on the upper end of the filter screen (2), and the feedback mechanism comprises a valve (61) arranged on the barrel body ( 1), movable ring (71) inside, movable rods (72) are distributed on the circumference of the movable ring (71), the upper end of the movable rod (72) passes through the flange of the barrel cover (61), a pressure switch (75) is arranged on the upper side of the flange, a spring (73) is sleeved on the outer diameter of the movable rod (72) and located on the upper side of the movable ring (71), a sealing ring (74) is arranged on the inner and outer diameters of the movable ring (71), an indicator light (76) is installed on the upper end of the barrel cover (61), a first valve body (41) is installed on the sewage discharge pipe (4), and a second valve body (51) is installed on the water outlet pipe (5) and located between the return pipe (62) and the barrel body (1).

2. A backwashing device for a swimming pool according to claim 1, characterized in that: The movable ring (71) is sealingly and slidably connected to the extension ring (21) and the barrel body (1) via the sealing ring (74), and the movable rod (72) is slidably connected to the flange.

3. A backwashing device for a swimming pool according to claim 1, characterized in that: The backwashing mechanism also includes an auxiliary component arranged on the inner side of the filter (2), the auxiliary component including a central axis (65), a support frame (67) fixed on the central axis (65), an impeller (66) mounted on the upper side of the central axis (65), the impeller (66) corresponding to the through hole through which the return pipe (62) passes into the barrel cover (61), a support frame (67) fixed on the central axis (65) located inside the filter (2), a brush roller (68) vertically mounted on the support frame (67), a gear (69) mounted on the lower end of the brush roller (68), and an inner gear ring (610) disposed at the lower end of the filter (2).

4. A backwashing device for a swimming pool according to claim 3, characterized in that: The inner gear ring (610) is welded to the filter screen (2), and the inner gear ring (610) is connected to the barrel body (1) via bolts.

5. A backwashing device for a swimming pool according to claim 3, characterized in that: The central shaft (65) is rotatably connected to the barrel body (1) and the barrel cover (61), and the brush roller (68) is rotatably connected to the support frame (67).

6. A backwashing device for a swimming pool according to claim 3, characterized in that: The brush roller (68) is in contact with the inner wall of the filter screen (2), and the gear (69) is meshed with the inner gear ring (610).

7. A backwashing device for a swimming pool according to claim 1, characterized in that: The water outlet pipe (5) is in communication with the inner cavity of the filter screen (2), and a frame (8) is fixed to the lower end of the barrel body (1).

Images