A pre-filter

Abstract

This utility model discloses a pre-filter, relating to the technical field of pipeline filtration equipment. The pre-filter includes a filter element assembly, which is sleeved inside a valve head. The valve head has an inlet pipe and an outlet pipe extending in a direction perpendicular to the axis of the filter element assembly. A filter bottle is threaded onto the inner wall of the valve head. The filter element assembly can extend into the inner cavity of the filter bottle. Several snap-fit ​​ridges are provided on the outer side of the port of the filter bottle. The extension direction of each snap-fit ​​ridge is the axial direction of the filter element assembly. The snap-fit ​​ridges are detachably snapped with a locking plate. The locking plate is used to screw the filter bottle to separate the filter bottle from the valve head. The above-mentioned pre-filter solves the technical problem that existing pre-filters are fixedly connected by snaps, and the parts connected by snaps are difficult to disassemble. When internal equipment needs to be repaired, the snaps will be damaged, and the snaps need to be replaced when the parts are reassembled after repair, which increases the maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline filtration equipment, and in particular to a pre-filter. Background Technology

[0002] Existing urban water supply pipelines are often too long and aging. Rust and unremoved silt and other impurities can cause water-using equipment to malfunction. Therefore, filtration devices are necessary in these pipelines. Pre-filters, a common type of filtration device, are typically installed after the water meter. Their main function is to restore tap water to its pre-treatment standard, protecting downstream equipment. Pre-filters can filter visible impurities such as silt, rust, and floating debris, significantly extending the lifespan of subsequent equipment. However, existing pre-filters usually use plastic clips for connection. Disassembling the pre-filter for rework or to inspect its internal structure can damage these clips, requiring replacement during reassembly and increasing maintenance costs.

[0003] In conclusion, developing a pre-filter that is easy to disassemble and whose connecting parts can be repeatedly disassembled and reassembled is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a pre-filter that solves the technical problem that existing pre-filters are connected by plastic clips, which cannot be reused after disassembly, thus increasing maintenance costs.

[0005] To achieve the above objectives, this utility model provides a pre-filter, comprising:

[0006] The filter element assembly is fitted inside the valve head. The valve head has an inlet pipe and an outlet pipe extending in a direction perpendicular to the axis of the filter element assembly. A filter bottle is threaded onto the inner wall of the valve head. The filter element assembly can extend into the inner cavity of the filter bottle. Several snap-fit ​​ridges are provided on the outer side of the port of the filter bottle. The extension direction of each snap-fit ​​ridge is the axis direction of the filter element assembly. The snap-fit ​​ridges are detachably snapped with a retaining plate. The retaining plate is used to screw the filter bottle to separate the filter bottle from the valve head.

[0007] Preferably, the card plate includes a gripping part and a locking part that are connected to each other. The locking part is specifically semi-circular and has a plurality of locking grooves on its inner side. The locking grooves and the locking edges are locked in one-to-one. The gripping part is used to rotate the locking part.

[0008] Preferably, a first half-shell and a second half-shell are provided on both sides of the valve head. Several buckles extend from the edge of the port of the first half-shell, and several slots are provided on the inner wall of the port of the second half-shell. The ports of the first half-shell and the second half-shell are connected so that the slots and buckles cooperate.

[0009] Preferably, a control component is fixed to the outside of the filter bottle, and the control component contains a power supply and an electronic control board. The electronic control board is electrically connected to the cleaning component, which is used to rinse the filter element assembly.

[0010] Preferably, a pressure gauge is provided between the inlet pipe and the outlet pipe. The pressure gauge is used to receive the water pressure in the valve head and transmit the pressure signal to the electronic control board.

[0011] Preferably, both the inlet pipe and the outlet pipe are threaded with fasteners, and the end of each fastener facing away from the valve head is connected to a heat-fusion pipe.

[0012] Preferably, the control board is connected to an alarm, which is used to control the alarm to operate when the water pressure in the valve head exceeds a preset range.

[0013] Preferably, both sides of the ports of the first half-shell and the second half-shell are provided with retaining rings, each retaining ring being able to clamp onto both sides of the inlet pipe and the outlet pipe. The end of the second half-shell facing away from the control component is provided with an observation window, the observation window corresponding to the position of the pressure gauge.

[0014] Preferably, a wedge-shaped protrusion is provided on the side of the buckle that is away from the inner cavity of the first half shell. The wedge-shaped protrusion has a first inclined surface and a second inclined surface on both sides along the length direction of the buckle. The first inclined surface is used to guide the buckle into the slot, and the second inclined surface is used to guide the buckle out of the slot.

[0015] Compared with the above-mentioned background technology, the pre-filter provided by this utility model includes: a filter element assembly, which is sleeved in the inner cavity of a valve head. An inlet pipe and an outlet pipe are respectively provided on both sides of the inner cavity of the valve head. The inlet pipe and the outlet pipe are coaxially arranged and perpendicular to the axis of the filter element assembly. A filter bottle is threadedly connected to the inner cavity of the valve head. When the filter bottle is connected to the valve head, the filter element extends into the filter bottle. Several locking ridges are provided on the side wall of the filter bottle port. Each locking ridge is evenly distributed around the axis of the filter bottle and extends along the axis of the filter element. A retaining plate is detachably provided on the outer periphery of the filter bottle port. The retaining plate cooperates with the locking ridges to fix the retaining plate to the filter bottle. By moving the retaining plate, the filter bottle connected to the valve head is rotated to separate the filter bottle from the valve head. The pre-filter provided in this application connects the valve head and the filter bottle via a threaded connection, and uses a clamping plate to connect and disconnect the filter bottle from the valve head. During disassembly, only the filter bottle needs to be unscrewed from the threaded section of the valve head. The connecting components have an intact structure and can be repeatedly assembled. This simplifies the disassembly and assembly of the pre-filter while reducing maintenance costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 An exploded view of the pre-filter provided in an embodiment of this utility model;

[0018] Figure 2 This is a structural diagram of the first half-shell provided in an embodiment of the present utility model;

[0019] Figure 3 This is a structural diagram of the second half-shell provided in an embodiment of the present utility model;

[0020] Figure 4 This is a diagram of the card plate structure provided in an embodiment of the present utility model;

[0021] Figure 5 This is a side view of the first half-shell structure provided in an embodiment of the present invention.

[0022] Among them, 1-filter element assembly; 2-valve head; 3-inlet pipe; 4-outlet pipe; 5-filter bottle; 6-clamping edge; 7-clamping plate; 71-holding part; 72-clamping part; 73-locking groove; 8-first half shell; 81-clasp; 9-second half shell; 91-slot; 92-observation window; 10-control component; 11-pressure gauge; 12-clamping ring; 13-fastener. Detailed Implementation

[0023] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] This utility model provides a pre-filter; please refer to the appendix to the specification. Figure 1The pre-filter includes a filter element assembly 1, which is located inside the valve head 2. The filter element assembly 1 and the valve head 2 are coaxially arranged. An inlet pipe 3 and an outlet pipe 4 are respectively provided on both sides of the filter element assembly 1. The inlet pipe 3 and the outlet pipe 4 are coaxially arranged, and their axes are perpendicular to the filter element assembly 1. A threaded section is provided on the inner wall of the valve head 2, and the valve head 2 is threadedly connected to the filter bottle 5. Further, several locking ridges 6 are provided on the outer wall of the filter bottle 5 port. Each locking ridge 6 extends along the axial direction of the filter element assembly 1 and is evenly distributed around the axis of the filter element assembly 1. A retaining plate 7 is provided on the outer periphery of the filter bottle 5 port. The retaining plate 7 is fixedly connected to the filter bottle 5 port through the locking ridges 6. By turning the retaining plate 7 and unscrewing the filter bottle 5, the threaded part of the filter bottle 5 can be unscrewed from the valve head 2, thus completing the disassembly of the filter bottle 5 from the valve head 2. During the process, the inlet pipe 3 and outlet pipe 4 of the pre-filter are connected to the water supply pipe. The water flow direction in the water supply pipe is perpendicular to the filter element assembly 1, so that the impurities such as mud and sand in the water flow can fully contact the filter element assembly 1, ensuring that the pre-filter has a reliable filtration effect. After a period of use, the filtration effect of the filter element assembly 1 decreases. The staff will conduct regular inspection and maintenance of the pre-filter. The clamping plate 7 is fixedly connected to the filter bottle 5 through the clamping rib 6. The staff will rotate the clamping plate 7 to make the filter bottle 5 and the valve head 2 rotate relative to each other, separating the filter bottle 5 from the valve head 2. The staff will then replace the filter element assembly 1. Because the filter bottle 5 and the valve head 2 are connected by threads, the structure of the connecting parts is intact during the disassembly process. The staff can then turn the wrench in the opposite direction to screw the filter bottle 5 to connect it to the valve head 2.

[0026] Please refer to the instruction manual appendix. Figure 4 The card plate 7 includes a gripping part 71 and a locking part 72 that are fixedly connected. Preferably, the edge of the connection between the gripping part 71 and the locking part 72 is chamfered to make the load distribution at the connection between the gripping part 71 and the locking part 72 uniform and improve the load strength of the card plate 7. The gripping part 71 is specifically a flat plate, and the locking part 72 is specifically a semi-circular annular plate. The edge of the port of the locking part 72 is provided with an arc chamfer. The arc chamfer is used to guide the locking edge 6 into the locking part 72. A plurality of locking grooves 73 are evenly distributed on the inner edge of the locking part 72. Each locking groove 73 can cooperate with each locking edge 6 to ensure that the card plate 7 and the filter bottle 5 are locked securely.

[0027] Please refer to the instruction manual appendix. Figure 2 , 35. A first half-shell 8 and a second half-shell 9 are respectively provided on both sides of the valve head 2. The ports of the first half-shell 8 and the second half-shell 9 are connected to each other, surrounding the valve head 2 within the inner cavity of the first half-shell 8 and the second half-shell 9. Several buckles 81 are provided on the edge of the port of the first half-shell 8, and each buckle 81 extends out of the port of the first half-shell 8. The end of each buckle 81 has a wedge-shaped protrusion on the side away from the inner cavity of the first half-shell 8, and the wedge-shaped protrusion has a first inclined surface and a second inclined surface on both sides along the length direction of the buckle 81. The first inclined surface is located on the side of the wedge-shaped protrusion opposite to the second half-shell 9. The first inclined surface makes the end of the buckle 81 opposite to the second half-shell 9 have a sharp part. Correspondingly, several slots 91 are provided on the inner wall of the port of the second half-shell 9. When the ports of the first half-shell 8 and the second half-shell 9 are opposite each other, the positions of each buckle 81 and each slot 91 correspond. Pressing the first half-shell 8 will cause the buckles 81 extending out of the port of the first half-shell 8 to be pressed. The buckle 81 extends into the inner cavity of the second half-shell 9. The wedge-shaped protrusion on the side wall of the buckle 81 abuts against the port of the second half-shell 9. The sharp part of the wedge-shaped protrusion allows the buckle 81 to easily extend into the inner cavity of the second half-shell 9. The first inclined surface of the wedge-shaped protrusion abuts against the inner wall of the second half-shell 9, causing the buckle 81 to gradually deform. When the wedge-shaped protrusion aligns with the slot 91, the buckle 81 springs back, pushing the wedge-shaped protrusion into the slot 91, completing the connection between the buckle 81 and the slot 91. Further... The angle between the second inclined surface and the latch 81 is greater than the angle between the first inclined surface and the latch 81. This ensures that the latch 81 has a certain clamping strength while also allowing for repeated assembly and disassembly. When it is necessary to separate the first half-shell 8 and the second half-shell 9, the operator pulls the first half-shell 8 and the second half-shell 9 to both sides. The second inclined surface abuts against the edge of the latch groove 91, guiding the wedge-shaped protrusion to gradually slide out of the latch groove 91, thus completing the separation of the first half-shell 8 and the second half-shell 9. The first half-shell 8 and the second half-shell 9 surround the outer periphery of the valve head 2 to prevent the valve head 2 from being contaminated by the outside environment and to avoid corrosion.

[0028] Preferably, the filter bottle 5 is fitted inside the receiving shell, and a control component 10 is provided between the receiving shell and the filter bottle 5. A sealing gasket is provided between the port where the filter bottle 5 and the receiving shell meet, and the sealing gasket prevents water from flowing into the receiving shell from the filter bottle 5. The control component 10 includes a power supply and an electronic control board. In one embodiment of the application, the electronic control board is connected to a valve actuator, which is used to control the connection and disconnection of the valve head 2. Furthermore, a pressure gauge 11 is also connected to the outside of the valve head 2, and the pressure gauge 11 is located between the inlet pipe 3 and the outlet pipe 4. The pressure gauge 11 is connected to the electronic control board. The pressure gauge 11 is used to detect the water pressure inside the valve head 2. In actual use, as the filter element assembly 1 is worn out, some impurities accumulate inside the valve head 2, reducing the conduction cross section inside the valve head 2. At this time, the water flow can form a greater water pressure inside the valve head 2. When the impurities inside the valve head 2 accumulate to a certain extent, the water pressure inside the valve head 2 exceeds the maximum permissible range. The electronic control board receives the electrical signal transmitted by the pressure gauge 11 and controls the alarm to sound an alarm, reminding the user to replace or maintain the filter element assembly 1.

[0029] In addition, a cleaning component is also provided inside the housing. The cleaning component is also connected to the electronic control board. The electronic control board detects the water pressure in the valve head 2 in real time through the pressure gauge 11. When the water pressure in the valve head 2 changes, the electronic control board controls the cleaning component to flush the filter element assembly 1, washing off the impurities attached to the filter element assembly 1, and ensuring that the filter element assembly 1 has a sufficient service life.

[0030] Please refer to the instruction manual appendix. Figure 2 With appendix Figure 3 Both sides of the ports of the first half-shell 8 and the second half-shell 9 are provided with retaining rings 12. After the first half-shell 8 and the second half-shell 9 are connected, a protective shell is formed. Each retaining ring 12 is also connected, so that there are clearance holes on both sides of the protective shell. The water inlet pipe 3 and the water outlet pipe 4 pass through the clearance holes. In addition, an observation window 92 is provided at the end of the second half-shell 9 away from the control component 10, and a clearance groove is provided at the end of the first half-shell 8 away from the control component 10. When the first half-shell 8 and the second half-shell 9 are connected, the observation window 92 extends into the clearance groove for observation. The window 92 corresponds to the pressure gauge 11. Users can check the operation of the pre-filter through the observation window 92. Furthermore, fasteners 13 are threadedly connected to the outer circumference of the inlet pipe 3 and the outlet pipe 4. Each fastener 13 is located on the outside of the first half shell 8 and the second half shell 9. A heat-fusion tube is connected to the end of each fastener 13 away from the filter element assembly 1. After the heat-fusion tube is heated, it is connected to the external pipeline. After the heat-fusion tube cools down, it is bonded to the external pipeline to ensure good sealing between the valve head 2 and the external pipeline after connection.

[0031] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0032] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A pre-filter, characterized in that, include: A filter element assembly (1) is fitted into the inner cavity of a valve head (2). The valve head (2) has an inlet pipe (3) and an outlet pipe (4) extending in a direction perpendicular to the axis of the filter element assembly (1). A filter bottle (5) is threaded onto the inner wall of the valve head (2). The filter element assembly (1) can extend into the inner cavity of the filter bottle (5). Several snap-fit ​​ridges (6) are provided on the outer side of the port of the filter bottle (5). The extension direction of each snap-fit ​​ridge (6) is the axial direction of the filter element assembly (1). The snap-fit ​​ridge (6) is detachably snapped with a clamping plate (7). The clamping plate (7) is used to screw the filter bottle (5) to separate the filter bottle (5) from the valve head (2).

2. The pre-filter according to claim 1, characterized in that, The card plate (7) includes a gripping part (71) and a locking part (72) connected to each other. The locking part (72) is specifically semi-circular. The inner side of the locking part (72) is provided with a plurality of locking grooves (73). The locking grooves (73) are locked in one-to-one with the locking edge (6). The gripping part (71) is used to rotate the locking part (72).

3. The pre-filter according to claim 2, characterized in that, The valve head (2) is provided with a first half shell (8) and a second half shell (9) on both sides respectively. The first half shell (8) has several buckles (81) extending from the edge of its port. The second half shell (9) has several slots (91) on its inner wall. The ports of the first half shell (8) and the second half shell (9) are connected so that the slots (91) and buckles (81) cooperate.

4. The pre-filter according to claim 3, characterized in that, A control component (10) is fixed to the outside of the filter bottle (5). The control component (10) contains a power supply and an electronic control board. The electronic control board is electrically connected to the cleaning component. The cleaning component is used to rinse the filter element assembly (1).

5. The pre-filter according to claim 4, characterized in that, A pressure gauge (11) is provided between the inlet pipe (3) and the outlet pipe (4). The pressure gauge (11) is used to receive the water pressure in the valve head (2) and transmit the pressure signal to the electronic control board.

6. The pre-filter according to claim 5, characterized in that, Both the inlet pipe (3) and the outlet pipe (4) are threaded with fasteners (13), and each fastener (13) has a heat-fusion pipe connected to the end opposite to the valve head (2).

7. The pre-filter according to claim 6, characterized in that, The electrical control board is connected to an alarm device. The electrical control board is used to control the alarm device to operate when the water pressure in the valve head (2) exceeds the preset range.

8. The pre-filter according to claim 5, characterized in that, Both sides of the first half-shell (8) and the second half-shell (9) are provided with retaining rings (12), and each retaining ring (12) can be clamped on both sides of the water inlet pipe (3) and the water outlet pipe (4). The second half-shell (9) is provided with an observation window (92) at the end away from the control component (10), and the observation window (92) corresponds to the position of the pressure gauge (11).

9. The pre-filter according to claim 8, characterized in that, The buckle end has a wedge-shaped protrusion on the side opposite to the inner cavity of the first half shell (8). The wedge-shaped protrusion has a first inclined surface and a second inclined surface on both sides along the length direction of the buckle (81). The first inclined surface is used to guide the buckle (81) into the slot (91), and the second inclined surface is used to guide the buckle (81) out of the slot (91).

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