Pre-filter and method for replacing filter element of pre-filter

Abstract

The pre-filter comprises a machine head provided with a water inlet pipe and a water outlet pipe and a filter bottle detachably connected with the machine head, the replaceable filter element is arranged in the filter bottle, and the machine head is connected with a dismounting assembly used for opening or closing the machine head. The dismounting assembly comprises a turning cover connected with the machine head, and a sliding arm which is connected with the turning cover and is rotatably driven by the turning cover to switch the filter bottle between the removing position and the connecting position, and the sliding arm is connected with the filter bottle. Through the unique structural design, when a user replaces the filter element, the filter bottle and the filter element can be easily taken out only by rotating the knob to close a water source and opening the turning cover, a household water inlet main valve does not need to be closed, waste of water resources is avoided, the whole operation process is simple and convenient, professional tools and professionals are not needed, and the use experience of the user is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and particularly to a pre-filter and a method for replacing its filter element. Background Art

[0002] As the first line of defense for household water use, the pre-filter can effectively filter out large particle impurities such as rust and sediment, protect subsequent water-related equipment, reduce wear and tear, prevent pipeline blockage, and ensure the safety and smoothness of household water use. However, there are many inconveniences in the filter element replacement of existing pre-filters. For example, when replacing the filter element of some pre-filters, it is necessary to close the main household water inlet valve, which is not only cumbersome to operate but also may cause waste of water resources. At the same time, the disassembly and installation process of the filter element is relatively complex and requires professional tools or professional personnel to operate, bringing great inconvenience to users. In addition, the fixing method of the filter bottle of some pre-filters is complex and there are many components, increasing the manufacturing cost and the probability of failure. Summary of the Invention

[0003] The purpose of the present invention is to solve the above technical problems and provide a pre-filter and a method for replacing its filter element to solve the problems such as cumbersome operation, need to close the main valve, waste of water resources and complex structure existing in the filter element replacement process of existing pre-filters.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a pre-filter, including a machine head provided with a water inlet pipe and a water outlet pipe, a filter bottle detachably connected to the machine head, a replaceable filter element is arranged in the filter bottle, and a disassembly component for opening or closing the machine head is connected to the machine head. The disassembly component includes a flip cover connected to the machine head, and a sliding arm connected to the flip cover and capable of driving the filter bottle to switch between a removal position and a connection position by the rotatable drive of the flip cover. The sliding arm is connected to the filter bottle. The removal position refers to the position where the filter bottle is separated from the machine head and the filter element in the filter bottle can be taken out for replacement. In the present application, after the flip cover rotates to drive the sliding arm to move downward, the sliding arm drives the filter bottle to move downward to the removal position; the connection position refers to the position where the filter bottle is connected to the machine head for normal filtration.

[0005] Preferably, a second connection hole is arranged on the sliding arm, and a second rotating shaft is arranged on the flip cover. The second rotating shaft is inserted into the second connection hole to connect the sliding arm and the flip cover so that the sliding arm rotates around the second rotating shaft.

[0006] Preferably, a sliding plate is arranged below the machine head, a sliding track is arranged on the sliding plate, a guiding block is arranged in the sliding track, and the lower end of the sliding arm and the guiding block are connected by screws or pins. The guiding block is ingeniously designed to only slide up and down in the sliding track, which makes the lower end of the sliding arm can only move up and down and rotate slightly during actual work, further enhancing the structural stability and controllability.

[0007] Preferably, the filter bottle is provided with a clamp, the clamp is provided with a hanging ear, the sliding arm is provided with a first groove, and the hanging ear is clamped with the first groove. The hanging ear of the filter bottle clamp is hung in the first groove of the sliding arm, so that the filter bottle can move up and down synchronously with the up and down movement of the first groove.

[0008] Preferably, the filter bottle is provided with a number of first protruding portions arranged around the circumference of the filter bottle, the outside of the filter bottle is provided with a hoop, the hoop is provided with a number of second grooves that are clamped with the first protruding portions, the filter bottle is provided with an outer ring, and a third groove is formed between the outer ring and the hoop, and the clamp is arranged in the third groove.

[0009] Preferably, the machine head is provided with a bracket, the bracket is provided with a first rotating shaft, the flip cover is provided with a first connection hole, and the first rotating shaft is inserted into the first connection hole to connect the flip cover and the bracket so that the flip cover rotates around the first rotating shaft.

[0010] Preferably, the machine head is provided with a fixed block, and the sliding arm is provided with a fourth groove where the filter bottle is latched with the fixed block at the connection position and separated from the fixed block at the removal position. When the fourth groove on the sliding arm is latched with the fixed block, the filter bottle is in the connection position. The cooperation between the fourth groove and the fixed block can generate an upward supporting force to support the filter bottle; when the fourth groove and the fixed block are separated from each other, the filter bottle is separated from the machine head and the filter bottle moves to the removal position.

[0011] Preferably, the machine head includes a housing provided with a bracket, a valve core arranged in the housing, a water inlet pipe, and a water outlet pipe. The valve core is provided with a water inlet and a water outlet, and the valve core can rotatably connect the water inlet with the water inlet pipe and the water outlet with the water outlet pipe both in communication or disconnected.

[0012] Preferably, the valve core is provided with a third rotating shaft, the housing is provided with a through hole, and the third rotating shaft passes through the through hole and is connected with the knob. By rotating the knob to drive the valve core to rotate, the water inlet of the valve core is staggered from the water inlet pipe of the pre-filter, and at the same time, the water outlet of the valve core is also staggered from the water outlet pipe of the pre-filter, thereby blocking the water flow in the municipal water supply and the household pipe network, achieving the effect of cutting off the water source, and avoiding water leakage during the filter element replacement process.

[0013] Preferably, a rotational limit is formed between the second connection hole and the second rotating shaft. The second rotating shaft is a flat shaft and the second connection hole is a C-shaped hole. When the flat shaft rotates in the C-shaped hole, when the flat shaft rotates to the notch of the C-shaped hole, a rotational limit is formed and it cannot rotate, so that a rotational limit is formed between the sliding arm and the flip cover, which can effectively limit the rotation range of the flip cover and prevent it from rotating excessively and causing structural damage or functional failure.

[0014] Preferably, the filter element is provided with an upper cover and a lower cover, the upper cover is provided with a support sheet arranged around the circumference of the upper cover, the lower cover is provided with a second protrusion, the bottom of the filter bottle is provided with a fifth groove, and the second protrusion is inserted into the fifth groove. By providing the support sheet, the second protrusion and the fifth groove, when the filter element is replaced, the filter element can be made concentric in the filter bottle, which is convenient for automatic guidance and alignment in the subsequent installation process, thereby improving the accuracy and convenience of installation.

[0015] A method for replacing a filter element of a pre-filter comprises the following steps: rotating a knob, the knob driving a valve core to synchronously rotate a corresponding angle, so that a water inlet of the valve core and a water inlet pipe of the pre-filter are staggered, and a water outlet of the valve core and a water outlet pipe of the pre-filter are also staggered, thereby blocking water flow in municipal water and household pipe networks; The flip cover is opened upwards, and the flip cover rotates upwards around the first rotating shaft. During this process, the second rotating shaft rotates backwards and downwards. Due to the restriction of the guide block at the lower end of the sliding arm, the lower end of the sliding arm can only move downwards, thereby causing the sliding arm to move backwards and downwards as a whole. The fourth groove on the sliding arm is separated from the fixed block, and the first groove of the sliding arm drives the hanging ear of the filter bottle clamp to move the filter bottle downwards. After the filter bottle moves downward for a certain distance, the flip cover cannot continue to rotate upward. At this time, the filter bottle moves to the removal position, the bottle mouth of the filter bottle is disengaged from the machine head, and the bottle mouth of the filter bottle is lower than the lower end surface of the machine head. The filter element moves downward with the filter bottle, and the upper surfaces of the filter bottle and the filter element are lower than the lower surface of the machine head. At this time, the user can directly take the filter bottle out of the U-shaped groove by hand; The old filter element in the filter bottle is taken out and discarded, and a new filter element is placed in the filter bottle, and the filter bottle with the new filter element is placed in the first groove of the sliding arm, and the flip cover is pressed downward, and the flip cover moves downward around the first rotating shaft, and the second rotating shaft moves forward and upward. The lower end of the sliding arm moves upward and forward under the action of the guide block, and the filter bottle and the machine head can smoothly enter the machine head due to the action of the guide block. The filter element is arranged in the middle of the filter bottle due to the support sheet, the second protrusion and the fifth groove. The filter element is inserted into the valve core, and the flip cover continues to rotate downward, and the filter bottle and the filter element continue to move upward until the flip cover cannot rotate. At this time, the filter bottle and the machine head are in place, and the filter bottle returns to the connection position; Turn the knob back to its initial position. The knob will drive the valve core to rotate a certain angle so that the water inlet of the valve core is aligned with the water inlet pipe of the pre-filter. At the same time, the water outlet of the valve core is also aligned with the water outlet pipe of the pre-filter. The water flow in the municipal water and household pipe network is conducted, and the pre-filter starts to work normally.

[0016] The present invention has the following beneficial effects: Through a unique structural design, when the user replaces the filter element, they only need to rotate the knob to turn off the water source and open the flip cover to easily remove the filter bottle and the filter element, without having to close the main household water inlet valve, avoiding waste of water resources. Moreover, the entire operation process is simple and convenient, without the need for professional tools or professional personnel, greatly improving the user experience; The overall structural design of the present invention is reasonable, the connection and cooperation between components are tight, and the number of components is relatively small, reducing the manufacturing cost and the probability of failure, and improving the stability and reliability of the equipment; Multiple support pieces provided on the filter element can enable it to achieve concentricity automatically in the filter bottle. During the installation process, through the design of the guide block, the accuracy and convenience of installation are ensured, reducing the error and difficulty during the installation process. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the filter bottle in the connected position.

[0018] Figure 2 is Figure 1 a cross-sectional view taken along the A-A direction.

[0019] Figure 3 is a schematic structural diagram of the filter bottle in the removed position.

[0020] Figure 4 is Figure 3 a cross-sectional view taken along the B-B direction.

[0021] Figure 5 is a schematic structural diagram of the filter bottle in the removed state.

[0022] Figure 6 is a schematic structural diagram of the valve core disconnected from the water inlet pipe and the water outlet pipe.

[0023] Figure 7 is a schematic structural diagram of the machine head and the bracket.

[0024] Figure 8 is a schematic structural diagram of the sliding arm and the sliding plate.

[0025] Figure 9 is a schematic structural diagram of the flip cover.

[0026] Figure 10 is a schematic structural diagram of the filter bottle.

[0027] Figure 11 is a schematic structural diagram of the hoop.

[0028] Figure 12 is a schematic structural diagram of the filter bottle and the hoop.

[0029] In the figure: 1. Machine head, 11. Water inlet pipe, 12. Water outlet pipe, 13. Fixed block, 14. Housing, 141. Through hole, 15. Valve core, 151. Water inlet, 152. Water outlet, 153. Third rotating shaft, 2. Filter bottle, 21. First protruding part, 22. Outer ring, 23. Third groove, 24. Fifth groove, 3. Filter element, 31. Upper cover, 311. Support piece, 32. Lower cover, 321. Second protruding part, 4. Flap, 41. Second rotating shaft, 42. First connection hole, 5. Slide arm, 51. Second connection hole, 52. First groove, 53. Fourth groove, 6. Slide plate, 61. Slideway, 7. Guide block, 8. Clamp, 81. Hanging ear, 9. Hoop, 91. Second groove, 10. Bracket, 101. First rotating shaft, 100. Knob. Detailed implementation mode

[0030] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0031] As Figure 1-12 shown, a pre-filter of the present invention includes a machine head 1 provided with a water inlet pipe 11 and a water outlet pipe 12, a filter bottle 2 detachably connected to the machine head 1, a replaceable filter element 3 is provided in the filter bottle 2, and a disassembly component for opening or closing the machine head 1 is connected to the machine head 1. The disassembly component includes a flap 4 connected to the machine head 1, and a slide arm 5 connected to the flap 4 and capable of driving the filter bottle 2 to switch between a removal position and a connection position by the rotation of the flap 4. The slide arm 5 is connected to the filter bottle 2.

[0032] The slide arm 5 is provided with a second connection hole 51, and the flap 4 is provided with a second rotating shaft 41. The second rotating shaft 41 is inserted into the second connection hole 51 to connect the slide arm 5 and the flap 4 so that the slide arm 5 rotates around the second rotating shaft 41.

[0033] A slide plate 6 is provided below the machine head 1. The slide plate 6 is provided with a slideway 61, and a guide block 7 is provided in the slideway 61. The lower end of the slide arm 5 and the guide block 7 are connected by screws or pins.

[0034] The filter bottle 2 is provided with a clamp 8, the clamp 8 is provided with a hanging ear 81, and the slide arm 5 is provided with a first groove 52. The hanging ear 81 is clamped with the first groove 52.

[0035] The filter bottle 2 is provided with a plurality of first protruding parts 21 arranged around the circumference of the filter bottle 2. A hoop 9 is provided outside the filter bottle 2. A plurality of second grooves 91 for clamping with the first protruding parts 21 are provided in the hoop 9. An outer ring 22 is provided on the filter bottle 2. A third groove 23 is formed between the outer ring 22 and the hoop 9. The clamp 8 is arranged in the third groove 23.

[0036] A bracket 10 is provided on the machine head 1 , a first shaft 101 is provided on the bracket 10 , a first connecting hole 42 is provided on the flip cover 4 , and the first shaft 101 is inserted into the first connecting hole 42 to connect the flip cover 4 with the bracket 10 so that the flip cover 4 rotates around the first shaft 101 .

[0037] A fixing block 13 is disposed on the machine head 1 , and a fourth groove 53 is disposed on the sliding arm 5 , in which the filter bottle 2 is buckled with the fixing block 13 at the connection position and the filter bottle 2 is separated from the fixing block 13 at the removal position.

[0038] The machine head 1 includes a shell 14 with a bracket 10, a valve core 15 arranged in the shell 14, a water inlet pipe 11, and a water outlet pipe 12. The valve core 15 is provided with a water inlet 151 and a water outlet 152. The valve core 15 can be rotated to connect or disconnect the water inlet 151 with the water inlet pipe 11, and the water outlet 152 with the water outlet pipe 12.

[0039] The valve core 15 is provided with a third rotating shaft 153 , and the housing 14 is provided with a through hole 141 . The third rotating shaft 153 passes through the through hole 141 and is connected with the knob 100 .

[0040] A rotation limit is formed between the second connecting hole 51 and the second rotating shaft 41 . The second rotating shaft 41 is a flat shaft, and the second connecting hole 51 is a C-shaped hole.

[0041] The filter element 3 is provided with an upper cover 31 and a lower cover 32 . The upper cover 31 is provided with a support sheet 311 arranged around the circumference of the upper cover 31 . The lower cover 32 is provided with a second protrusion 321 . The bottom of the filter bottle 2 is provided with a fifth groove 24 , and the second protrusion 321 is inserted into the fifth groove 24 .

[0042] A method for replacing a filter element of a pre-filter, comprising the following contents: Turning the knob 100, the knob 100 drives the valve core 15 to rotate synchronously to a corresponding angle, so that the water inlet 151 of the valve core 15 and the water inlet pipe 11 of the pre-filter are staggered, and the water outlet 152 of the valve core 15 and the water outlet pipe 12 of the pre-filter are also staggered, thereby blocking the water flow in the municipal water and household pipe network; The flip cover 4 is opened upwards, and the flip cover 4 rotates upwards around the first rotating shaft 101. During this process, the second rotating shaft 41 rotates backwards and downwards. Due to the restriction of the guide block 7 at the lower end of the sliding arm 5, the lower end of the sliding arm 5 can only move downwards, so that the sliding arm 5 moves backwards and downwards as a whole, and the fourth groove 53 on the sliding arm 5 is separated from the fixing block 13. The first groove 52 of the sliding arm 5 drives the hanging ear 81 of the clamp 8 of the filter bottle 2 to move the filter bottle 2 downwards; After the filter bottle 2 moves downward for a certain stroke, the flip cover 4 cannot continue to rotate upward. At this time, the filter bottle 2 moves to the removal position, the bottle mouth of the filter bottle 2 is disengaged from the machine head 1, and the bottle mouth of the filter bottle 2 is lower than the lower end surface of the machine head 1. The filter element 3 moves downward together with the filter bottle 2, and the upper surfaces of the filter bottle 2 and the filter element 3 are both lower than the lower surface of the machine head 1. At this time, the user can directly take out the filter bottle 2 from the U-shaped groove by hand; Take out the old filter element 3 in the filter bottle 2 and discard it, and place the new filter element 3 in the filter bottle 2. Put the filter bottle 2 equipped with the new filter element 3 into the first groove 52 of the sliding arm 5. Press down the flip cover 4, and the flip cover 4 moves downward around the first rotating shaft 101. The second rotating shaft 41 moves forward and upward. The lower end of the sliding arm 5 moves upward and forward under the action of the guide block 7. The filter bottle 2 enters the machine head 1, the filter element 3 is inserted into the valve core 15, the flip cover 4 continues to rotate downward, and the filter bottle 2 and the filter element 3 continue to move upward until the flip cover 4 cannot rotate. At this time, the filter bottle 2 and the machine head 1 are in place, and the filter bottle 2 returns to the connection position; Turn the knob 100 back to the initial state. The knob 100 drives the valve core 15 to rotate, so that the water inlet 151 of the valve core 15 is aligned with the water inlet pipe 11 of the pre-filter, and at the same time the water outlet 152 of the valve core 15 is also aligned with the water outlet pipe 12 of the pre-filter. The water flow in the municipal water supply and the household pipe network is conducted, and the pre-filter starts to work normally.

[0043] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] It should be noted that when an element is referred to as "fixed on" or "provided on" another element, it can be directly located on the other element or indirectly located on the other element. When an element is referred to as "connected to" another element, it can be directly connected or indirectly connected to the other element.

[0045] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention, rather than indicating that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating relative importance or indicating the quantity of technical features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

Claims

1. A pre-filter, characterized in that: The invention comprises a machine head (1) provided with a water inlet pipe (11) and a water outlet pipe (12), a filter bottle (2) detachably connected to the machine head (1), a replaceable filter element (3) being provided in the filter bottle (2), a disassembly assembly for opening or closing the machine head (1) being connected to the machine head (1), and a sliding arm (5) connected to the flip cover (4) and rotatably driven by the flip cover (4) to switch the filter bottle (2) between a removal position and a connection position, and the sliding arm (5) is connected to the filter bottle (2).

2. The pre-filter according to claim 1, characterized in that: A second connecting hole (51) is provided on the sliding arm (5), and a second rotating shaft (41) is provided on the flip cover (4). The second rotating shaft (41) is inserted into the second connecting hole (51) to connect the sliding arm (5) and the flip cover (4) so ​​that the sliding arm (5) rotates around the second rotating shaft (41).

3. The pre-filter according to claim 1, characterized in that: A slide plate (6) is provided below the machine head (1), a slideway (61) is provided on the slide plate (6), a guide block (7) is provided in the slideway (61), and the lower end of the slide arm (5) and the guide block (7) are connected by screws or latches.

4. The pre-filter according to claim 1, characterized in that: The filter bottle (2) is provided with a clamp (8), the clamp (8) is provided with a hanging ear (81), the sliding arm (5) is provided with a first groove (52), and the hanging ear (81) is clamped with the first groove (52).

5. The pre-filter according to claim 4, characterized in that: The filter bottle (2) is provided with a plurality of first protrusions (21) arranged around the circumference of the filter bottle (2); a clamp (9) is provided on the outside of the filter bottle (2); a plurality of second grooves (91) are provided in the clamp (9) and are clamped with the first protrusions (21); an outer ring (22) is provided on the filter bottle (2); a third groove (23) is formed between the outer ring (22) and the clamp (9); and the clamp (8) is arranged in the third groove (23).

6. The pre-filter according to claim 1, characterized in that: A bracket (10) is provided on the machine head (1), a first rotating shaft (101) is provided on the bracket (10), a first connecting hole (42) is provided on the flip cover (4), and the first rotating shaft (101) is inserted into the first connecting hole (42) to connect the flip cover (4) to the bracket (10) so that the flip cover (4) rotates around the first rotating shaft (101).

7. The pre-filter according to claim 1, characterized in that: A fixing block (13) is provided on the machine head (1), and a fourth groove (53) is provided on the sliding arm (5) for the filter bottle (2) to be buckled with the fixing block (13) at the connection position and for the filter bottle (2) to be separated from the fixing block (13) at the removal position.

8. The pre-filter according to claim 1, characterized in that: The machine head (1) comprises a housing (14) provided with a bracket (10), a valve core (15) provided in the housing (14), a water inlet pipe (11), and a water outlet pipe (12); the valve core (15) is provided with a water inlet (151) and a water outlet (152); the valve core (15) can be rotated to connect or disconnect the water inlet (151) and the water inlet pipe (11), and the water outlet (152) and the water outlet pipe (12).

9. The pre-filter according to claim 8, characterized in that: The valve core (15) is provided with a third rotating shaft (153), the housing (14) is provided with a through hole (141), and the third rotating shaft (153) passes through the through hole (141) and is connected to the knob (100).

10. A method for replacing a filter element of a pre-filter according to any one of claims 1 to 9, characterized in that: Includes the following: The knob (100) is turned, and the knob (100) drives the valve core (15) to synchronously rotate by a corresponding angle, so that the water inlet (151) of the valve core (15) and the water inlet pipe (11) of the pre-filter are offset, and the water outlet (152) of the valve core (15) and the water outlet pipe (12) of the pre-filter are also offset, thereby blocking the water flow in the municipal water supply and the household pipe network; The flip cover (4) is opened upwards, and the flip cover (4) rotates upwards around the first rotating shaft (101). During this process, the second rotating shaft (41) rotates backwards and downwards. Due to the restriction of the guide block (7) at the lower end of the sliding arm (5), the lower end of the sliding arm (5) can only move downwards, thereby causing the sliding arm (5) to move backwards and downwards as a whole. The fourth groove (53) on the sliding arm (5) is separated from the fixing block (13), and the first groove (52) of the sliding arm (5) drives the hanging ear (81) of the clamp (8) of the filter bottle (2), so that the filter bottle (2) moves downwards. After the filter bottle (2) moves downward for a certain distance, the flip cover (4) cannot continue to rotate upward. At this time, the filter bottle (2) moves to the removal position, the mouth of the filter bottle (2) is disengaged from the machine head (1), and the mouth of the filter bottle (2) is lower than the lower end surface of the machine head (1). The filter element (3) moves downward together with the filter bottle (2). The upper surfaces of the filter bottle (2) and the filter element (3) are lower than the lower surface of the machine head (1). At this time, the user can directly remove the filter bottle (2) from the U-shaped groove by hand; The old filter element (3) in the filter bottle (2) is removed and discarded, and a new filter element (3) is placed in the filter bottle (2). The filter bottle (2) with the new filter element (3) is placed in the first groove (52) of the slide arm (5), and the flip cover (4) is pressed downward. The flip cover (4) moves downward around the first rotating shaft (101), and the second rotating shaft (41) moves forward and upward. The lower end of the slide arm (5) moves upward and forward under the action of the guide block (7), and the filter bottle (2) enters the machine head (1). The filter element (3) is inserted into the valve core (15). The flip cover (4) continues to rotate downward, and the filter bottle (2) and the filter element (3) continue to move upward until the flip cover (4) cannot rotate. At this time, the filter bottle (2) and the machine head (1) are in place, and the filter bottle (2) returns to the connection position; The knob (100) is turned back to the initial state, and the knob (100) drives the valve core (15) to rotate, so that the water inlet (151) of the valve core (15) and the water inlet pipe (11) of the pre-filter are aligned, and at the same time, the water outlet (152) of the valve core (15) and the water outlet pipe (12) of the pre-filter are also aligned, and the water flow in the municipal water and the household pipe network is conducted, and the pre-filter starts to work normally.

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