Filter

Abstract

The utility model discloses a filter which comprises a valve body, a filter cavity is formed in the valve body, an inlet end and an outlet end communicated with the filter cavity are formed at the two ends of the valve body, a filter screen is arranged in the filter cavity and fixed in the center of the valve body, and a blow-off pipeline connected with the outside and the filter cavity is arranged at the bottom of the valve body. A blow-off ball valve is connected to the blow-off pipeline, a cleaning part rotating on the filter screen is arranged in the valve body, and a controller for controlling the cleaning part is arranged on the valve body. The utility model has the following advantages and effects: the cleaning device can be directly cleaned, is convenient to replace, and is more convenient and practical.

Description

Technical Field

[0001] The utility model relates to the field of valves, and more specifically, it relates to a filter. Background Art

[0002] The vertical full-automatic filter consists of a main machine and an electric control box. The structure of the main machine is composed of components such as a filter valve body, a filter element, a reducer electric drain valve, a transmission shaft, etc. The filter valve body is a tank with a high inlet and a low outlet, with a water inlet at the upper side and a water outlet at the lower side.

[0003] In the prior art, there are still many deficiencies in the filter. For example, after long-term use, internal impurities are deposited on the filter element. However, at this time, the internal cleaning is relatively complex. Although the vertical full-automatic filter already has a main machine and a control box, it does not have the ability to clean. Therefore, the applicant makes improvements based on the existing equipment situation. Summary of the Utility Model

[0004] The utility model provides a filter, aiming to solve the problem that the filter in the prior art does not have the function of filtering and cleaning.

[0005] To achieve the above object, the utility model provides the following technical solution: A filter includes a valve body. The valve body forms a filtering cavity. Both ends of the valve body form an inlet end and an outlet end that communicate with the filtering cavity. The characteristics are as follows: A filter screen is arranged in the filtering cavity, and the filter screen is fixed at the center of the valve body. A sewage discharge pipe connecting the outside and the filtering cavity is arranged at the bottom of the valve body, and a sewage discharge ball valve is connected to the sewage discharge pipe. A cleaning part that rotates on the filter screen is arranged in the valve body, and a controller for controlling the cleaning part is arranged on the valve body.

[0006] Further, a support frame located in the filtering cavity is arranged in the valve body. The support frame includes an upper support edge and a lower support edge. The upper support edge is arranged at a position below the inlet end in the filtering cavity and is circular. The lower support edge is arranged below the outlet end in the filtering cavity. The lower support edge is closer to the center of the valve body than the upper support edge, and a filtering gap for fixing the filter screen is formed between the lower support edge and the upper support edge in the axial direction of the valve body.

[0007] Further, a limiting edge that bends upward is formed on the lower support edge.

[0008] Further, the cleaning part includes a cleaning ring and a telescopic rod. A plurality of bristles are arranged on the outer circumference of the cleaning ring. The telescopic rod is connected to the cleaning ring. A driving device is arranged at the top of the valve body, and the driving device is connected to and drives the cleaning ring to expand and contract and rotate in the valve body.

[0009] The further improvement of the present utility model is that a plurality of supporting feet are arranged on the outer periphery of the bottom of the valve body, and the supporting feet are evenly arranged around the outer periphery of the valve body.

[0010] The further improvement of the present utility model is that a supporting piece is arranged on the supporting foot.

[0011] The further improvement of the present utility model is that a cleaning port is opened on the valve body, a sliding block is detachably connected to the cleaning port, a filtering bottom is arranged on the sliding block, and when the sliding block is inserted into the valve body, the filtering bottom is located at the bottom of the filter net.

[0012] The further improvement of the present utility model is that a shell cover is arranged on the valve body, and the shell cover is detachably connected to the valve body.

[0013] The further improvement of the present utility model is that a needle valve and a pressure gauge are arranged on the valve body at the inlet end and the outlet end, and both the needle valve and the drain ball valve are connected to the controller.

[0014] The present utility model has the following effects: By setting the above structure, raw water flows in from the inlet end, enters the interior of the valve body, and then passes through the filter net from the inside to the outside. Impurities are intercepted on the inner wall of the filter cylinder, and the filtered clean water flows out from the outlet end. When the impurities on the inner wall of the filter cylinder accumulate more and more, a filter cake is formed on the inner surface of the filter cylinder, and a pressure difference gradually forms inside and outside the filter cylinder. When the pressure difference reaches the preset value of the pressure difference controller (pressure difference value = inlet pressure difference - outlet pressure difference), the self-cleaning process will be started. The self-cleaning process of the filter is jointly completed by the cleaning brush rotating along the inner surface of the filter net and the drain valve. The opened drain valve creates a negative pressure in the blocked filter cylinder. Description of the Drawings

[0015] Figure 1 is the structural diagram of the embodiment of the present utility model;

[0016] Figure 2 is the three-dimensional view of the cleaning ring of the embodiment of the present utility model;

[0017] Figure 3 is the three-dimensional view of the sliding block of the present utility model.

[0018] In the figure: 1. Valve body; 2. Filter cavity; 22. Inlet end; 23. Outlet end; 3. Filter net; 31. Drainage pipeline; 32. Drain ball valve; 4. Controller; 51. Upper support edge; 52. Lower support edge; 53. Filter gap; 54. Limit edge; 55. Cleaning ring; 56. Telescopic rod; 6. Supporting foot; 61. Supporting piece; 62. Cleaning port; 63. Sliding block; 631. Filtering bottom; 64. Shell cover; 65. Needle valve. Detailed Embodiment

[0019] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is 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 should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] Refer to Figures 1 to 3 A further description is made of the embodiments of the present utility model.

[0022] A filter includes a valve body 1. The valve body 1 forms a filtering chamber 2. Both ends of the valve body 1 form an inlet end 22 and an outlet end 23 that communicate with the filtering chamber 2. The characteristics are as follows: A filter screen 3 is arranged in the filtering chamber 2. The filter screen 3 is fixed at the center of the valve body 1. A sewage discharge pipe 31 connecting the outside and the filtering chamber 2 is arranged at the bottom of the valve body 1. A sewage discharge ball valve 32 is connected to the sewage discharge pipe 31. A cleaning member that rotates on the filter screen 3 is arranged in the valve body 1. A controller 4 for controlling the cleaning member is arranged on the valve body 1. When the controller 4 starts the cleaning member, the filter screen 3 can be cleaned, and at the same time, the sewage discharge pipe 31 is convenient for sewage discharge.

[0023] A support frame located in the filtering chamber 2 is arranged in the valve body 1. The support frame includes an upper support edge 51 and a lower support edge 52. The upper support edge 51 is arranged at a position below the inlet end 22 in the filtering chamber 2 and is in a circular ring shape. The lower support edge 52 is arranged below the outlet end 23 in the filtering chamber 2. The lower support edge 52 is closer to the center of the valve body 1 than the upper support edge 51. A filtering gap 53 for fixing the filter screen 3 is formed between the lower support edge 52 and the upper support edge 51 in the axial direction of the valve body 1. The setting of the filtering gap 53 enables the lower support edge 52 to support the filter screen 3. During installation, the bottom of the filter screen 3 can directly abut against the lower support edge 52, and the upper end of the filter screen 3 can be directly fixed to the upper support edge 51.

[0024] A limiting edge 54 that bends upward is formed on the lower support edge 52. When the filter screen 3 is installed, it can be limited, making the installation more convenient and preventing the filter screen 3 from shifting.

[0025] The cleaning part includes a cleaning ring 55 and a telescopic rod 56. A number of bristles are provided on the outer periphery of the cleaning ring 55. The telescopic rod 56 is connected to the cleaning ring 55. A driving device is provided at the top of the valve body 1. The driving device is connected to and drives the cleaning ring 55 to telescopically rotate within the valve body 1. When cleaning is required, the driving device is used to control the rotation of the cleaning ring 55 and move it up and down to clean the filter screen 3. The upper end of the telescopic rod 56 is threaded, and the telescopic rod 56 is threadedly connected to the driving device. In actual use, other methods can be adopted. This embodiment provides one of the implementation methods.

[0026] A number of support feet 6 are provided on the outer periphery of the bottom of the valve body 1. The support feet 6 are evenly arranged around the outer periphery of the valve body 1 and can provide support for the valve body 1. Support pieces 61 are provided on the support feet 6 to increase the bottom support surface and ensure the force on the support feet 6.

[0027] A cleaning port 62 is provided on the valve body 1. A sliding block 63 is detachably connected to the cleaning port 62. A filter bottom 631 is provided on the sliding block 63. When the sliding block 63 is inserted into the valve body 1, the filter bottom 631 is located at the bottom of the filter screen 3 and has an opening, which can be directly opened in some special cases to clean the impurities or directly perform cleaning. Moreover, a filter bottom 631 can be optionally provided on the sliding block 63 to disassemble the filter screen 3 into two parts. In this way, it is more convenient to clean the bottom of the filter screen 3. In actual use, the filter bottom 631 can be chosen not to be provided, so that the filter screen 3 itself is an integral body. In this way, the cleaning port 62 is only used for emergency cleaning.

[0028] A shell cover 64 is provided on the valve body 1. The shell cover 64 is detachably connected to the valve body 1, which can be opened for maintenance and protect the inside of the valve body 1.

[0029] A needle valve 65 and a pressure gauge are provided on the valve body 1 at the inlet end 22 and the outlet end 23. The needle valve 65 and the drain ball valve 32 are both connected to the controller 4, and the controller 4 controls all more conveniently, quickly and easily.

[0030] Raw water flows in from the inlet end 22, enters the inside of the valve body 1, and then passes through the filter screen 3 from the inside to the outside. The impurities are intercepted on the inner wall of the filter cylinder. The filtered clean water flows out from the outlet end 23. When the impurities on the inner wall of the filter cylinder accumulate more and more, a filter cake is formed on the inner surface of the filter cylinder, and a pressure difference gradually forms inside and outside the filter cylinder. When the pressure difference reaches the preset value of the pressure difference controller 4 (pressure difference value = inlet pressure difference - outlet pressure difference), the self-cleaning process will be started. The self-cleaning process of the filter is jointly completed by the cleaning brush that rotates along the inner surface of the filter screen 3 and the drain valve. The opened drain valve creates a negative pressure inside the blocked filter cylinder.

[0031] This specific embodiment is only an interpretation of the present utility model and does not limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that do not contribute creatively as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

Claims

1. A filter, comprising a valve body, wherein the valve body forms a filtering cavity, and both ends of the valve body form a connection for the inlet end and the outlet end of the filtering cavity, and is characterized in that: A filter screen is arranged in the filtering cavity. The filter screen is fixed at the center of the valve body. A sewage discharge pipe connecting the outside and the filtering cavity is arranged at the bottom of the valve body. A sewage discharge ball valve is connected to the sewage discharge pipe. A cleaning member that rotates on the filter screen is arranged in the valve body. A controller for controlling the cleaning member is arranged on the valve body.

2. The filter according to claim 1, characterized in that: A support frame located in the filtering cavity is arranged in the valve body. The support frame includes an upper support edge and a lower support edge. The upper support edge is arranged at a position below the inlet end in the filtering cavity and is circular. The lower support edge is arranged below the outlet end in the filtering cavity. The lower support edge is closer to the center of the valve body than the upper support edge. A filtering gap for fixing the filter screen is formed between the lower support edge and the upper support edge in the axial direction of the valve body.

3. The filter according to claim 2, characterized in that: A limiting edge that bends upward is formed on the lower support edge.

4. A filter according to claim 1, wherein: The cleaning member includes a cleaning ring and a telescopic rod. A plurality of bristles are arranged on the outer periphery of the cleaning ring. The telescopic rod is connected to the cleaning ring. A driving device is arranged at the top of the valve body. The driving device is connected to and drives the cleaning ring to expand and contract and rotate in the valve body.

5. The filter according to claim 4, characterized in that: A plurality of support feet are arranged on the outer periphery of the bottom of the valve body. The support feet are evenly arranged around the outer periphery of the valve body.

6. The filter according to claim 5, characterized in that: Support sheets are arranged on the support feet.

7. The filter according to claim 1, characterized in that: A cleaning port is formed on the valve body. A sliding block is detachably connected to the cleaning port. A filter bottom is arranged on the sliding block. When the sliding block is inserted into the valve body, the filter bottom is located at the bottom of the filter screen.

8. A filter according to claim 1, wherein: A shell cover is arranged on the valve body. The shell cover is detachably connected to the valve body.

9. The filter according to claim 1, characterized in that: Needle valves and pressure gauges located at the inlet end and the outlet end are arranged on the valve body. Both the needle valves and the sewage discharge ball valve are connected to the controller.

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