Machine head with water stop and pressure relief functions and pre-filter thereof

Abstract

The utility model discloses a machine head with water stop and pressure relief functions and a prefilter thereof, which comprise a machine head shell and a pressure relief valve which is arranged on the machine head shell and can move up and down to open the machine head for pressure relief, and a valve core, a water inlet pipe and a water outlet pipe are arranged in the machine head shell. And a knob capable of driving the valve core to rotate to communicate the valve core with the water inlet pipe and the water outlet pipe or to close the valve core with the water inlet pipe and the water outlet pipe is arranged on the machine head shell. Through the arrangement of the pressure release valve, the situation that the filter bottle is difficult to disassemble due to negative pressure is avoided, and water inlet and outlet are closed after the knob is rotated, so that water in a household pipe network cannot flow back.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purification equipment technical field, especially a kind of head with water stop pressure relief function and its prefilter. BACKGROUND

[0002] The existing prefilter needs to close the household total valve at the front end of prefilter during disassembly and washing, to prevent waste of water resources during disassembly and washing, at this time, prefilter is connected with water pipe in home, when filter bottle is disassembled, small pressure or negative pressure is formed in household pipe network, so that filter bottle is difficult to disassemble.And, after filter bottle is disassembled, filter bottle is connected with water pipe in home, water in household pipe network flows back to prefilter, and flows out from head of prefilter, when prefilter is installed under kitchen, basin is needed to receive water, so that operation is inconvenient. SUMMARY

[0003] The utility model discloses a kind of head with water stop pressure relief function and its prefilter, and the utility model discloses a kind of head with water stop pressure relief function, which is not difficult to disassemble filter bottle due to negative pressure, and the water in household pipe network is not backflowed after rotating knob and closing inlet and outlet water.

[0004] The technical scheme for solving the above technical problems is as follows: a kind of head with water stop pressure relief function, including head shell, the pressure relief valve that is opened pressure relief or closed sealing and can be moved up and down on head shell and opens head, water inlet pipe, water outlet pipe are equipped in valve core in head shell, rotating knob is equipped on head shell, and rotating knob can drive valve core to rotate and connect valve core with water inlet pipe and water outlet pipe or close valve core with water inlet pipe and water outlet pipe.By the above technical scheme, when valve core is connected with water inlet pipe and water outlet pipe, normal filtration is carried out, rotating knob is rotated, rotating knob drives valve core to rotate, valve core wall surface closes water inlet pipe and water outlet pipe, and pressure relief valve is pressed down, so that the problem that filter bottle is difficult to disassemble due to negative pressure and the problem that water in household pipe network backflows are solved.

[0005] As preferred, valve core includes protruding portion arranged outside pressure relief valve, and convex rib is arranged on protruding portion, first recess is arranged in rotating knob, and rotating knob is sleeved outside protruding portion to clamp first recess with convex rib.By the arrangement of convex rib and first recess, rotating knob drives valve core to rotate when rotating knob is rotated, and valve core rotates to connect valve core with water inlet pipe and water outlet pipe or close valve core with water inlet pipe and water outlet pipe.

[0006] As preferred, first through hole is arranged on valve core, screw rod passes through first through hole, pressure rod is arranged in protruding portion and can move up and down, screw rod is connected with pressure rod, and pressure rod drives screw rod to open or close first through hole.

[0007] Preferably, the protrusion is provided with a slide rail, and the pressure rod is provided with a protrusion. The protrusion moves up and down along the slide rail. By setting the protrusion and the slide rail, the pressure rod can move up and down within the protrusion, and when the knob is rotated, the protrusion can also be rotated, which in turn drives the pressure rod to rotate.

[0008] Preferably, the pressure relief valve also includes a spring located between the valve core and the pressure rod. A sealing gasket is provided on the screw, and the gasket opens or closes the first through hole as the screw moves up and down. When the spring pulls the screw upwards, the sealing gasket on the screw seals the valve core. When the pressure rod is pressed downwards, the screw opens the first through hole, connecting the inside of the machine head and filter bottle to the outside, thus achieving pressure relief.

[0009] Preferably, the pressure rod is equipped with a pressing block with an inclined protrusion, and the machine head housing is equipped with a valve housing. Inside the valve housing is a crossbar. As the pressing block rotates, the crossbar presses the pressure rod down or returns it to normal along the inclined protrusion. Rotating the knob drives the protrusion to rotate, which in turn drives the pressure rod to rotate. The rotation of the pressure rod causes the crossbar to press the pressure rod down or return it to normal as the pressing block rotates. When the pressure rod rotates to the top of the inclined protrusion and contacts the crossbar, the crossbar presses the pressure rod down. When the pressure rod rotates to the bottom of the inclined protrusion, it returns to normal. This rotation triggers the valve core to rotate and close the inlet and outlet pipes, and the pressure rod moves down to release pressure or connects with the inlet and outlet pipes. The pressure rod returns to normal, and the screw seals the first through hole.

[0010] Preferably, the protrusion has a second groove, and a sealing ring is provided in the second groove.

[0011] Preferably, the head housing is provided with a second through hole, and the protrusion passes through the second through hole and is located inside the knob.

[0012] Preferably, the valve core is provided with a rotatable inlet that is connected to or closed by the inlet pipe and a rotatable outlet that is connected to or closed by the outlet pipe. The valve core is provided with an inner tube located below the protrusion. The inner tube is connected to the outlet, and the first through hole is connected to the inner tube.

[0013] The pre-filter includes a filter bottle and a machine head with water-stopping and pressure-relief functions, and the machine head and filter bottle are connected.

[0014] The beneficial effects of this utility model are: pressure relief is achieved by rotating the knob, the filter bottle will not be difficult to remove due to negative pressure, and water in the household pipe network will not flow back. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model in the closed state.

[0016] Figure 2 yes Figure 1 A cross-sectional view along the AA direction.

[0017] Figure 3 is a schematic diagram of a communication state structure of the utility model.

[0018] Figure 4 is Figure 3 is a sectional view along the direction of B-B.

[0019] Figure 5 is a schematic diagram of the structure of the pressure relief valve.

[0020] Figure 6 is a schematic diagram of the structure of the valve core.

[0021] Figure 7 is a schematic diagram of the structure of the valve core from another perspective.

[0022] Figure 8 is a schematic diagram of the structure of the head shell.

[0023] Figure 9 is a schematic diagram of the structure of the knob.

[0024] In the figure: 1, head shell, 11, water inlet pipe, 12, water outlet pipe, 13, valve shell, 131, cross rod, 14, second through hole, 2, valve core, 21, protruding part, 211, protruding rib, 22, first through hole, 23, slide, 24, second groove, 25, water inlet, 26, water outlet, 27, inner pipe, 3, knob, 31, first groove, 4, screw rod, 5, spring, 6, pressure rod, 61, protruding block, 62, pressing block, 7, sealing gasket, 8, sealing ring, 9, filter bottle. DETAILED DESCRIPTION

[0025] The utility model will be further described below in combination with the drawings and embodiments.

[0026] As Figures 1-9 shown, the utility model discloses a head with water-stopping pressure relief function, including head shell 1, be located on the head shell 1 and can be up and down mobile and open the head and relieve pressure or close sealing pressure relief valve, be equipped with valve core 2, water inlet pipe 11, water outlet pipe 12 in the head shell 1, be equipped with the knob 3 of valve core 2 with water inlet pipe 11, water outlet pipe 12 can drive valve core 2 rotation and make valve core 2 with water inlet pipe 11, water outlet pipe 12 communicate or make valve core 2 with water inlet pipe 11, water outlet pipe 12 close on the head shell 1.

[0027] Valve core 2 includes the protruding part 21 of being equipped in the outer side of pressure relief valve, is equipped with protruding rib 211 on protruding part 21, is equipped with the first groove 31 in knob 3, and knob 3 is set in the outer side of protruding part 21 and makes first groove 31 with protruding rib 211 card and set.

[0028] Be equipped with first through hole 22 on valve core 2, and pressure relief valve includes screw rod 4 through first through hole 22, and the pressure rod 6 that can be up and down mobile in protruding part 21 and drive screw rod 4 and make first through hole 22 open or close, and pressure rod 6 is connected with screw rod 4.

[0029] The protrusion 21 is provided with a slide 23, and the pressure rod 6 is provided with a protrusion 61. The protrusion 61 moves up and down along the slide 23 within the slide 23.

[0030] The pressure relief valve also includes a spring 5 located between the valve core 2 and the pressure rod 6, and a sealing gasket 7 is provided on the screw 4. The sealing gasket 7 moves up and down with the screw 4 to open or close the first through hole 22.

[0031] The pressure rod 6 is provided with a pressing block 62 with an inclined protrusion. The machine head housing 1 is provided with a valve housing 13. The valve housing 13 is provided with a crossbar 131. The crossbar 131 rotates with the pressing block 62 and presses the pressure rod 6 downward or restores it to normal along the inclined protrusion.

[0032] The protrusion 21 is provided with a second groove 24, and a sealing ring 8 is provided in the second groove 24.

[0033] The head housing 1 is provided with a second through hole 14, and the protrusion 21 passes through the second through hole 14 and is located inside the knob 3.

[0034] The valve core 2 is provided with a rotatable inlet 25 that is connected to or closed by the inlet pipe 11 and a rotatable outlet 26 that is connected to or closed by the outlet pipe 12. The valve core 2 is provided with an inner tube 27, which is located below the protrusion 21. The inner tube 27 is connected to the outlet 26, and the first through hole 22 is connected to the inner tube 27.

[0035] The pre-filter includes a filter bottle 9 and a machine head with water-stopping and pressure-relief functions, and the machine head and filter bottle 9 are connected.

[0036] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0037] It should be noted that when a component is referred to as "fixed on" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0038] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device or element 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.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

Claims

1. A machine head with water-stopping and pressure-relief functions, characterized in that: Includes a machine head housing (1), a pressure relief valve that can move up and down on the machine head housing (1) to open the machine head for pressure relief or close the seal, a valve core (2), an inlet pipe (11), and an outlet pipe (12) are provided inside the machine head housing (1), and a knob (3) is provided on the machine head housing (1) to drive the valve core (2) to rotate and connect the valve core (2) with the inlet pipe (11) and the outlet pipe (12) or to close the valve core (2) with the inlet pipe (11) and the outlet pipe (12).

2. The machine head with water-stopping and pressure-relief function according to claim 1, characterized in that: The valve core (2) includes a protrusion (21) located on the outside of the pressure relief valve. The protrusion (21) is provided with a rib (211). The knob (3) is provided with a first groove (31). The knob (3) is sleeved on the outside of the protrusion (21) to engage the first groove (31) and the rib (211).

3. The machine head with water-stopping and pressure-relief function according to claim 2, characterized in that: The valve core (2) is provided with a first through hole (22). The pressure relief valve includes a screw (4) passing through the first through hole (22) and a pressure rod (6) that can move up and down in the protrusion (21) to open or close the first through hole (22). The pressure rod (6) is connected to the screw (4).

4. The machine head with water-stopping and pressure-relief function according to claim 3, characterized in that: The protrusion (21) is provided with a slide (23), and the pressure rod (6) is provided with a protrusion (61). The protrusion (61) moves up and down along the slide (23) inside the slide (23).

5. The machine head with water-stopping and pressure-relief function according to claim 4, characterized in that: The pressure relief valve also includes a spring (5) between the valve core (2) and the pressure rod (6), and a sealing gasket (7) is provided on the screw (4). The sealing gasket (7) moves up and down with the screw (4) to open or close the first through hole (22).

6. The machine head with water-stopping and pressure-relief function according to claim 5, characterized in that: The pressure bar (6) is provided with a pressing block (62) with an inclined protrusion, and the machine head housing (1) is provided with a valve housing (13). The valve housing (13) is provided with a crossbar (131). The crossbar (131) rotates with the pressing block (62) along the inclined protrusion to press the pressure bar (6) down or restore it to normal.

7. The machine head with water-stopping and pressure-relief function according to claim 2, characterized in that: The protrusion (21) is provided with a second groove (24), and a sealing ring (8) is provided in the second groove (24).

8. The machine head with water-stopping and pressure-relief function according to claim 2, characterized in that: The head housing (1) is provided with a second through hole (14), and the protrusion (21) passes through the second through hole (14) and is located inside the knob (3).

9. The machine head with water-stopping and pressure-relief function according to claim 2, characterized in that: The valve core (2) is provided with a rotatable inlet (25) that is connected to or closed by the inlet pipe (11) and a rotatable outlet (26) that is connected to or closed by the outlet pipe (12). The valve core (2) is provided with an inner tube (27), which is located below the protrusion (21). The inner tube (27) is connected to the outlet (26), and the first through hole (22) is connected to the inner tube (27).

10. A pre-filter, characterized in that: Includes a filter bottle (9) and a machine head with water-stopping and pressure-relief function as described in any one of claims 1 to 9, wherein the machine head and the filter bottle (9) are connected.

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