Valve head structure of inverted pre-filter and pre-filter

Abstract

The valve head structure comprises a valve shell, the valve shell is provided with a water inlet end, a water outlet end, an upward filter bottle assembling end and a valve shell cavity, a flow guide seat is arranged in the valve shell cavity, and the valve shell cavity is divided into a water inlet end valve shell cavity, a central end valve shell cavity and a water outlet end valve shell cavity by the flow guide seat. The water inlet end valve shell cavity is communicated with the water inlet end and is provided with a particle blow-down control valve, the central end valve shell cavity is communicated with a filter screen backwashing blow-down valve through a central blow-down pipe, and the water outlet end valve shell cavity is communicated with the water outlet end. The valve head structure of the inverted pre-filter is more optimized in structure, can be easily matched with an installation occasion, and is provided with a plurality of drainage channels to meet different application modes.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve head structure of inverted front filter and front filter belong to water purification equipment technical field. BACKGROUND

[0002] The mainstream product of prior art front filter is filter bottle down type, including: head, filter bottle connected with the upper end of the head, drain ball valve connected with the lower end of the filter bottle, filter screen framework is arranged in the filter bottle, the outer wall of filter screen framework is sleeved with filter screen. In the process of using, water flows into the gap between filter bottle and filter screen from the water inlet of head, flows into the center of filter screen framework after filtering by filter screen, and then flows to the water outlet of head from the center of filter screen framework, when needing to drain, the drain ball valve at the lower end of filter bottle is opened.

[0003] Some installation occasions, the filter bottle down type front filter is inconvenient to install, therefore, the inverted front filter is born according to market demand, the valve head of this kind of front filter needs to set up the drain port in addition to setting up the water inlet, water outlet and filter bottle installation port, that is, the function of the drain ball valve originally arranged at the lower end of the filter bottle needs to be transferred to the valve head, therefore, the traditional valve head structure needs to be optimized and adjusted.

[0004] In addition, the front filter needs to be cleaned regularly during use (filter screen, etc.), generally, reverse flushing mechanism is used to realize reverse flushing, and then the drain port is used to drain, but the reverse flushing mechanism itself also needs to be regularly flushed and drained. The utility model aims at providing a valve head structure of inverted front filter, which is more optimized in structure, easy to match installation occasions, has multiple drain channels to meet different application modes. UTILITY MODEL CONTENTS

[0005] One of the purposes of the utility model is to solve the deficiencies of the prior art front filter, provide a valve head structure of inverted front filter, which is more optimized in structure, easy to match installation occasions, has multiple drain channels to meet different application modes.

[0006] The second purpose of the utility model is to provide a front filter with the valve head structure of the inverted front filter.

[0007] The technical scheme adopted by the utility model to solve the technical problems is:

[0008] The valve head structure of the inverted front filter comprises a valve shell, the valve shell is provided with a water inlet end, a water outlet end, an upward filter bottle assembly end and a valve shell cavity, a flow guide seat is arranged in the valve shell cavity, the flow guide seat divides the valve shell cavity into a water inlet end valve shell cavity, a central end valve shell cavity and a water outlet end valve shell cavity, the water inlet end valve shell cavity is communicated with the water inlet end and is provided with a particle discharge channel, the central end valve shell cavity is communicated with the central discharge pipe and is provided with a filter screen backwashing discharge channel, and the water outlet end valve shell cavity is communicated with the water outlet end.

[0009] The utility model discloses realized to the valve head setting water inlet end, water outlet end, the filter bottle assembly end of going up, also set up two independent blowdown channel (particle blowdown channel, filter screen backwashing blowdown channel), namely the function of the original setting in the filter bottle lower end blowdown ball valve is transferred to the valve head, and the traditional valve head structure has been effectively optimized adjustment. When filtering, raw water flows into the raw water cavity between the filter mechanism and the filter bottle from the water inlet end, the water inlet end valve shell cavity in proper order, and flows out through the central end valve shell cavity, the water outlet end valve shell cavity and the water outlet end after filtering. Large particle impurities accumulate in the water inlet end valve shell cavity and can be directly discharged through the particle discharge channel. In the backwashing mode, the sewage for backwashing the filter screen enters the raw water cavity, and the raw water cavity is discharged through the filter screen backwashing discharge channel through the central discharge pipe. The structure is more optimized, easy to match the installation occasion, has multiple blowdown channels to meet different application modes.

[0010] Preferably, the water outlet end valve shell cavity is further provided with a backwashing filter cavity, and the backwashing filter cavity is provided with a backwashing filter screen washing discharge channel. In the backwashing mode of the backwashing filter screen, the sewage for backwashing the backwashing filter screen enters the backwashing filter cavity and is discharged through the backwashing filter screen washing discharge channel, thereby expanding the multiple blowdown channels to meet different application modes.

[0011] Preferably, the filter bottle assembly end is provided with a quick mounting structure for assembling the filter bottle, and the quick mounting structure adopts a detachable structure and comprises a screwing structure and a clamping structure. The quick mounting structure is convenient for users to install and convenient for the filter bottle to be replaced and maintained, or convenient for the valve head to be disassembled and cleaned when impurities are left in the valve head and block the valve head.

[0012] Preferably, the flow guide seat is provided with a buffer wall in the water inlet end valve shell cavity, and a buffer area is formed below the buffer wall. The buffer wall and the buffer area are arranged to allow large particle impurities to deposit when passing through the buffer wall and the buffer area and to be discharged through the particle discharge channel, thereby delaying the blockage of the filter element and improving the performance of the front filter.

[0013] Preferably, the buffer wall comprises a blocking part, an oblique flow guide part and a vertical flow guide part, and the junction of the blocking part, the oblique flow guide part and the vertical flow guide part is in the form of a circular arc transition. The combination of the water flow direction and the flow rate improves the deposition effect of large particle impurities and further improves the performance of the front filter and prolongs the service life of the front filter.

[0014] Preferably, the flow guide seat is provided with a flow guide pipe at the water outlet end valve shell cavity, and the flow guide pipe is provided with a transition area. The flow guide pipe and the transition area are arranged to allow the purified water at the water outlet end to flow out stably, avoiding large flow and flow rate fluctuations.

[0015] Preferably, the transition area is a circular arc transition, and the axial direction of the flow guide pipe is consistent with the axial direction of the water outlet end. The circular arc transition area and the axial direction are consistent, which can reduce the resistance of the purified water flowing out, allow the purified water at the water outlet end to flow out stably, and avoid large flow and flow rate fluctuations.

[0016] Preferably, the flow guide seat is integrally formed of inert material, the inert material is rubber or plastic, or at least one side in contact with water is provided with an inert material coating, and the inert material is plastic, rubber or ceramic.

[0017] Preferably, the flow guide seat is provided with an assembly part at the central end valve shell cavity, the assembly part is adapted to the lower part of the filter mechanism of the inverted pre-filter, and the inner cavity of the filter mechanism and the central end valve shell cavity can communicate.

[0018] Preferably, the water inlet end, the water outlet end and the filter bottle assembly end are provided with isolation bushings, the isolation bushings are made of inert material, the isolation bushings include water inlet end isolation bushings, water outlet end isolation bushings and assembly end isolation bushings, and are integrally injection molded by plastic or rubber material; or at least one side in contact with water of the isolation bushings is provided with an inert material coating, and the inert material is plastic, rubber or ceramic.

[0019] An inverted pre-filter adopts the valve head structure.

[0020] The utility model discloses a beneficial effect is: the utility model discloses realized to the valve head setting water inlet end, water outlet end, the filter bottle assembly end of going up, also set up two independent blowdown valves (particulate blowdown channel, filter screen backwashing blowdown channel), namely the function of the original setting in the filter bottle lower end drainage ball valve is transferred to the valve head, and the traditional valve head structure is effectively optimized and adjusted. When filtering, raw water flows into the raw water cavity between the filter mechanism and the filter bottle from the water inlet end, the water inlet end valve shell cavity in proper order, and flows out through the central end valve shell cavity, the water outlet end valve shell cavity and the water outlet end after filtering. Large particle impurities accumulate in the water inlet end valve shell cavity and can be directly discharged through the particle direct discharge control valve. In the backwashing mode, the sewage for backwashing the filter screen enters the raw water cavity, and the raw water cavity is discharged through the filter screen backwashing blowdown channel through the central blowdown pipe. The structure is more optimized, easy to match the installation occasion, has multiple blowdown channels to meet different application modes. In the backwashing mode of the backwashing filter screen, the sewage for backwashing the backwashing filter screen enters the water outlet end valve shell cavity and is discharged through the backwashing filter screen flushing blowdown channel, which expands the multiple blowdown channels to meet different application modes. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 is a structural schematic diagram of the present application;

[0023] Figure 2 is a structural schematic diagram of the present application;

[0024] Figure 3 is a structural schematic diagram of the present application (normal filtering state);

[0025] Figure 4 is a structural schematic diagram of the present application (large particle pollution discharge state);

[0026] Figure 5 is a structural schematic diagram of the present application (backwashing filter screen washing and pollution discharge state);

[0027] Figure 6 is a structural schematic diagram of the present application (filter screen backwashing and pollution discharge state).

[0028] In the figure: 1, valve shell, 11, water inlet end, 12, water outlet end, 13, filter bottle assembly end, 14, valve shell cavity, 14a, water inlet end valve shell cavity, 14b, central end valve shell cavity, 14c, water outlet end valve shell cavity, 14d, backwashing filter cavity, 2, flow guide seat, 21, buffer wall, 22, buffer zone, 23, flow guide pipe, 24, transition zone, 3, particle pollution discharge channel, 4, central pollution discharge pipe, 5, filter screen backwashing and pollution discharge channel, 6, backwashing filter screen washing and pollution discharge channel. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] Example 1

[0034] like Figures 1-6 As shown, the valve head structure of the inverted pre-filter includes a valve housing 1. The valve housing 1 has an inlet end 11, an outlet end 12, an upward-facing filter bottle assembly end 13, and a valve housing cavity 14. The valve housing cavity 14 is provided with a flow guide seat 2, which divides the valve housing cavity 14 into an inlet valve housing cavity 14a, a central valve housing cavity 14b, and an outlet valve housing cavity 14c. The inlet valve housing cavity 14a is connected to the inlet end 11 and is provided with a particle discharge channel 3. The central valve housing cavity 14b is connected to a filter screen backwash discharge channel 5 through a central discharge pipe 4. The outlet valve housing cavity 14c is connected to the outlet end 12.

[0035] This invention features an inlet, an outlet, and an upward-facing filter bottle assembly end on the valve head. It also includes two independent drain valves (a particle discharge channel and a filter screen backwash discharge channel), effectively optimizing the traditional valve head structure by transferring the function of the drain ball valve originally located at the bottom of the filter bottle to the valve head. During filtration, raw water flows sequentially from the inlet end and the inlet valve chamber into the raw water chamber between the filter mechanism and the filter bottle. After filtration, it flows out through the central valve chamber, the outlet valve chamber, and the outlet end. Large particles accumulate in the inlet valve chamber and can be directly discharged through the particle direct discharge control valve. In backwash mode, wastewater from the backwash of the filter screen enters the raw water chamber, which then flows through the central drain pipe to the filter screen backwash discharge channel. The optimized structure facilitates matching with different installation environments and provides multiple discharge channels to meet various application modes.

[0036] In the embodiment, the water outlet end valve shell cavity 14c is further provided with a backwashing filter cavity 14d, and the backwashing filter cavity 14d is provided with a backwashing filter screen flushing and sewage discharging channel 6. In the backwashing mode of the backwashing filter screen, the sewage for backwashing the backwashing filter screen enters the water outlet end valve shell cavity and is discharged through the backwashing filter screen flushing and sewage discharging channel, thereby expanding the multiple sewage discharging channels to meet different application modes. The filter bottle assembly end 13 is provided with a quick assembly structure for assembling the filter bottle, and the quick assembly structure adopts a detachable structure including a screwing structure and a clamping structure. The quick assembly structure is convenient for users to assemble and convenient for the filter bottle to be replaced and maintained, or when impurities are left in the valve head and are blocked, the quick assembly structure is convenient for disassembly and cleaning.

[0037] More specifically, the flow guide base 2 is provided with a buffer wall 21 in the water inlet end valve shell cavity 14a, and a buffer area 22 is formed below the buffer wall 21. Through the arrangement of the buffer wall and the buffer area, large-particle impurities are deposited when passing through and are discharged through the particle sewage discharging channel, thereby delaying the blockage of the filter element, improving the performance of the pre-filter, and the buffer wall 21 includes a blocking part, an oblique flow guiding part and a vertical flow guiding part, and the junction of the blocking part, the oblique flow guiding part and the vertical flow guiding part is a circular arc transition. Through the change of the water flow direction and the flow rate, the deposition effect of large-particle impurities is improved, the performance of the pre-filter is further improved, and the service life thereof is prolonged, and the flow guide base 2 is provided with a flow guide pipe 23 in the water outlet end valve shell cavity 14c, and the flow guide pipe 23 is provided with a transition area 24. Through the arrangement of the flow guide pipe and the transition area, the purified water at the water outlet end is stably discharged, and large flow and flow rate fluctuations are avoided.

[0038] In the embodiment, the transition area 24 is a circular arc transition, and the axial direction of the flow guide pipe 23 is consistent with the axial direction of the water outlet end 12. The arrangement of the circular arc transition area and the axial direction can reduce the resistance of the purified water to be discharged, stably discharge the purified water at the water outlet end, and avoid large flow and flow rate fluctuations.

[0039] In the embodiment, the environmental friendliness of the valve head is improved, the flow guide base is integrally formed by using an inert material, the inert material is rubber or plastic, or at least one side in contact with water is provided with an inert material coating, and the inert material is plastic, rubber or ceramic.

[0040] Specifically, the flow guide base 2 is provided with an assembly part at the central end valve shell cavity 14b, the assembly part is adapted to the lower part of the filter mechanism of the inverted pre-filter, and the inner cavity of the filter mechanism is in communication with the central end valve shell cavity 14b. The water inlet end 11, the water outlet end 12 and the filter bottle assembly end 13 are provided with isolation bushings, the isolation bushings are processed by using an inert material, the isolation bushings include a water inlet end isolation bushing, a water outlet end isolation bushing and an assembly end isolation bushing, and are integrally injection molded by using plastic or rubber material; or at least one side in contact with water of the isolation bushing is provided with an inert material coating, and the inert material is plastic, rubber or ceramic.

[0041] Example 2

[0042] An inverted pre-filter employs any of the valve head structures described.

[0043] The utility model discloses a valve head is provided with water inlet end, water outlet end, the filter bottle assembly end of up, still is provided with two independent blowdown valve (granule blowdown channel, filter screen backflush blowdown channel), namely the function of the original setting in the filter bottle lower end blowdown ball valve is transferred to the valve head, and the traditional valve head structure has been effectively optimized adjustment. When filtering, raw water flows into the raw water cavity between filter mechanism and filter bottle from water inlet end, water inlet end valve shell cavity in proper order, after filtering, flows out through central end valve shell cavity, water outlet end valve shell cavity and water outlet end, and the big granule impurity is accumulated in water inlet end valve shell cavity, can be directly discharged through granule direct discharge control valve, when backflush mode, the sewage of filter screen backflush, enters raw water cavity, and raw water cavity is kept to filter screen backflush blowdown channel through central blowdown pipe and is discharged. The structure is more optimized, and it is easy to match the installation occasion, has multiple blowdown channels to satisfy the application mode of not using. Under the backflush mode of backflush filter screen, the sewage of backflush filter screen backflush, enters water outlet end valve shell cavity, and is discharged through backflush filter screen flushing blowdown channel, expands multiple blowdown channels to satisfy the application mode of not using.

[0044] The above-described embodiments are only a preferred scheme of the utility model, and do not limit the utility model in any form, and other variants and modifications are still possible without exceeding the technical scheme recorded in the claims.

Claims

1. The valve head structure of an inverted pre-filter, comprising a valve shell (1) provided with a water inlet end (11), a water outlet end (12), an upward filter bottle assembling end (13) and a valve shell cavity (14), characterized in that: The valve shell cavity (14) is provided with a flow guide seat (2), which divides the valve shell cavity (14) into a water inlet end valve shell cavity (14a), a central end valve shell cavity (14b) and a water outlet end valve shell cavity (14c). The water inlet end valve shell cavity (14a) is in communication with the water inlet end (11) and is provided with a particle blowdown channel (3). The central end valve shell cavity (14b) is in communication with the central blowdown pipe (4) and is provided with a filter screen backwashing blowdown channel (5). The water outlet end valve shell cavity (14c) is in communication with the water outlet end (12).

2. The valve head structure of an inverted prefilter according to claim 1, characterized in that: The water outlet end valve shell cavity (14c) is further provided with a backwashing filter cavity (14d) provided with a backwashing filter screen flushing blowdown channel (6). The filter bottle assembly end (13) is provided with a quick assembly structure for assembling the filter bottle. The quick assembly structure adopts a detachable structure, including a screw connection structure and a clamping structure.

3. Valve head structure for an inverted prefilter according to claim 1 or 2, characterized in that: The flow guide seat (2) is provided with a buffer wall (21) in the water inlet end valve shell cavity (14a), and a buffer zone (22) is formed below the buffer wall (21).

4. The valve head construction for an inverted prefilter according to claim 3, characterized in that: The buffer wall (21) includes a blocking part, an inclined flow guide part and a vertical flow guide part, and the junction of the blocking part, the inclined flow guide part and the vertical flow guide part is a circular arc transition.

5. The valve head construction for an inverted prefilter according to claim 4, characterized in that: The flow guide seat (2) is provided with a flow guide pipe (23) in the water outlet end valve shell cavity (14c), and the flow guide pipe (23) is provided with a transition zone (24).

6. The valve head structure of an inverted prefilter according to claim 5, characterized in that: The transition zone (24) is a circular arc transition, and the axial direction of the flow guide pipe (23) is consistent with the axial direction of the water outlet end (12).

7. The valve head structure of an inverted prefilter according to claim 5, characterized in that: The flow guide seat is integrally formed of inert material, which is rubber or plastic, or at least one side in contact with water is provided with an inert material coating, which is plastic, rubber or ceramic.

8. The valve head structure of an inverted prefilter according to claim 1 or 2, characterized in that: The flow guide seat (2) in the central end valve shell cavity (14b) is provided with an assembly part which is adapted to the lower part of the filter mechanism of the inverted front filter, and the inner cavity of the filter mechanism can communicate with the central end valve shell cavity (14b).

9. The valve head structure of an inverted prefilter according to claim 1 or 2, characterized in that: The water inlet end (11), the water outlet end (12) and the filter bottle assembly end (13) are provided with an isolation bushing which is made of inert material, including a water inlet end isolation bushing, a water outlet end isolation bushing and an assembly end isolation bushing, and is integrally injection molded by plastic or rubber material; or at least one side in contact with water is provided with an inert material coating, which is plastic, rubber or ceramic.

10. An inverted prefilter, characterized by The valve head structure of any one of claims 1-9 is adopted.

Images