CN219167908U

CN219167908U - Compact tap water purifier

Info

Publication number: CN219167908U
Application number: CN202320084756.3U
Authority: CN
Inventors: 何福强
Original assignee: Foshan Shunde Jingke Electric Appliance Co ltd
Current assignee: Foshan Shunde Jingke Electric Appliance Co ltd
Priority date: 2023-01-29
Filing date: 2023-01-29
Publication date: 2023-06-13
Anticipated expiration: 2033-01-29

Abstract

The utility model discloses a compact tap water purifier, which comprises a filter element, a valve shell, a valve core and a filter element cover, wherein the lower end part of the filter element cover is in sealing connection with a standpipe shell of the valve shell, the filter element is arranged in a cavity surrounded by the filter element cover and the standpipe shell, a water purifying water inlet and a raw water inlet are respectively formed in the upper part of a transverse cavity of the lower part of the valve shell, a water purifying water outlet and a raw water outlet are respectively formed in the lower part of the transverse cavity, a rotating shaft is formed at one end of the valve core, a water purifying notch and a tap water notch are formed in the rotating shaft, the water purifying notch and the tap water notch are distributed on the rotating shaft, the water purifying notch and the tap water notch are arranged in a staggered mode, the rotating shaft is inserted in the transverse cavity, a filter element water outlet connector is communicated with the water purifying water inlet, and the tap water inlet is communicated with the raw water inlet. The compact tap water purifier is beneficial to simplifying the appearance structure of the tap water purifier, reducing the occupied space and being convenient to use.

Description

Compact tap water purifier

Technical Field

The utility model relates to the field of faucet water purifiers, in particular to a compact faucet water purifier.

Background

At present, a tap water purifier is installed at a water outlet of a tap, for convenience of use, a user usually installs the tap water purifier on a tap positioned at a dish of a kitchen, most tap water purifiers on the market comprise a filter and a waterway switching valve, the filter is connected with the waterway switching valve through a turnbuckle structure, the waterway switching valve is connected with the tap, raw water is discharged at the bottom of the waterway switching valve, purified water is discharged at the bottom of the filter, so that after raw water and purified water are switched, the user has to move a kettle or swing the tap, the use is inconvenient, the tap water purifier occupies a large space, the operation of the user for washing dishes or vegetables is hindered, and the water leakage phenomenon is easy to occur at the turnbuckle connecting structure, so that the tap water purifier in the prior art is necessary to be improved.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a compact tap water purifier which occupies smaller space and is convenient to use.

The aim of the utility model is achieved by the following technical scheme.

The utility model discloses a compact tap water purifier, which comprises a filter element; wherein, the utility model also comprises a valve shell, a valve core and a filter core cover, wherein, the upper part of the valve shell is provided with a vertical tube shell, the lower end part of the filter core cover is in sealing connection with the vertical tube shell, the filter core is arranged in a cavity enclosed by the filter core cover and the vertical tube shell, a horizontal pipe cavity is formed in the lower part of the valve shell, the upper part of the horizontal pipe cavity is respectively provided with a water purifying inlet and a raw water inlet, the lower part of the horizontal pipe cavity is respectively provided with a water purifying outlet and a raw water outlet, the water purifying inlet is opposite to the water purifying outlet, the raw water inlet is arranged corresponding to the raw water outlet, one end of the valve core is provided with a rotating shaft, the water purification device comprises a rotary shaft, a water purification device and a filter element cover, wherein a water purification notch and a tap water notch are formed in the rotary shaft, the water purification notch and the tap water notch are distributed on a rotary shaft line of the rotary shaft, the water purification notch and the tap water notch are arranged in a staggered mode, the rotary shaft is inserted into a transverse cavity, a filter element water outlet connector is arranged at the lower end of the filter element, the filter element water outlet connector is communicated with the water purification water inlet, a tap water inlet is formed at the upper end of the filter element cover, the tap water inlet is communicated with the raw water inlet, and the tap water inlet is communicated with the outer wall of the filter element; the rotary shaft is provided with a raw water blocking position and a purified water blocking position relative to the transverse tube cavity, in the raw water blocking position, the raw water inlet and the raw water outlet are connected through the tap water through notch, the rotary shaft seals the purified water inlet, in the purified water blocking position, the purified water inlet and the purified water outlet are connected through the purified water through notch, and the rotary shaft seals the raw water inlet.

Preferably, the rotating shaft is embedded with a closed-loop sealing strip and a sealing ring, the closed-loop sealing strip is arranged on the outer side of the water purification notch in a surrounding mode, the sealing ring is arranged opposite to the tap water notch, the closed-loop sealing strip is used for enclosing the water purification water inlet at the raw water blocking position, and the sealing ring is used for enclosing the raw water inlet at the water purification blocking position.

Preferably, a coupling part is formed at the other end of the valve core, the coupling part protrudes out of the valve shell, and a waterway switching knob is mounted on the coupling part.

Preferably, the rotating shaft is sleeved with a right sealing ring and a left sealing ring, the right sealing ring and the left sealing ring are in sealing connection with the inner wall of the transverse lumen, the closed-loop sealing strip is arranged between the right sealing ring and the left sealing ring, the left sealing ring is arranged between the closed-loop sealing strip and the sealing ring, and the right sealing ring is arranged between the closed-loop sealing strip and the connecting part.

Preferably, the tap water purifier further comprises a universal water passing joint and a tap joint for connecting a tap, wherein a ball head part is formed at the upper end of the universal water passing joint, an external thread part is formed at the lower end of the universal water passing joint, the ball head part is connected with the tap joint, and the external thread part is in threaded connection with the tap water inlet.

Preferably, the bottom end cover of the valve casing is provided with a bottom shell, a water purifying main drain hole is formed at the bottom of the bottom shell, the water purifying main drain hole is formed below the corresponding water purifying water outlet, a water purifying auxiliary drain hole is formed at the bottom of the bottom shell, the water purifying auxiliary drain hole is surrounded at the outer side of the water purifying main drain hole, a raw water drain hole is formed at the bottom of the bottom shell, the raw water drain hole is communicated with the raw water outlet, the raw water drain holes are distributed and arranged at the outer side of the water purifying auxiliary drain hole, and the water purifying main drain hole, the water purifying auxiliary drain hole and the raw water drain hole are mutually separated.

Compared with the prior art, the utility model has the beneficial effects that: the filter element is arranged in a cavity surrounded by the filter element cover and the standpipe shell, a horizontal pipe cavity is formed in the lower part of the valve shell, a purified water inlet and a raw water inlet are respectively formed in the upper part of the horizontal pipe cavity, a purified water outlet and a raw water outlet are respectively formed in the lower part of the horizontal pipe cavity, a rotating shaft is formed at one end of the valve element, a purified water through notch and a tap water through notch are formed in the rotating shaft, and the rotating shaft is inserted in the horizontal pipe cavity, so that the faucet water purifier is beneficial to ensuring that the appearance structure is concise, reducing the occupied space of the faucet water purifier and ensuring that the faucet water purifier is convenient to use.

Drawings

Fig. 1 is a schematic perspective view of a tap water purifier according to the present utility model.

Fig. 2 is an exploded view of the tap water purifier of the present utility model.

Fig. 3 is a schematic cross-sectional view of the faucet mounted in a water purification stage according to the present utility model.

Fig. 4 is a schematic view showing a sectional partial structure of the tap water purifier in a water purification gear according to the present utility model in a right-hand direction.

Fig. 5 is a schematic cross-sectional view of the tap water purifier in the raw water range according to the present utility model.

Fig. 6 is a partial schematic view of fig. 5.

Fig. 7 is a schematic top perspective view of the valve element of the present utility model.

Fig. 8 is a schematic bottom perspective view of the valve element of the present utility model.

Fig. 9 is a schematic top perspective view of the valve housing of the present utility model.

Fig. 10 is a schematic bottom perspective view of the valve housing of the present utility model.

Fig. 11 is a schematic front perspective view of the valve housing of the present utility model.

Fig. 12 is a schematic top perspective view of the bottom shell of the present utility model.

Fig. 13 is a schematic perspective view of a universal water joint according to the present utility model.

Fig. 14 is a schematic perspective view of a cartridge cover of the present utility model.

Description of the reference numerals: a valve housing 1; a purified water inlet 101; a purified water outlet 102; a raw water inlet 103; a raw water outlet 104; a transverse lumen 11; a riser housing 12; a cartridge connecting tube 121; a valve core 2; a rotation shaft 21; a clean water passing notch 201; tap water through notch 202; a closed loop seal strip 22; a seal ring 23; a coupling portion 24; a right seal ring 25; a left seal ring 26; a waterway switching rotary handle 3; a filter element 4; a cartridge outlet fitting 401; a bottom case 5; a water purifying main drain hole 501; a water purification auxiliary drain hole 5011; a raw water drain hole 502; a cartridge cover 6; a tap water inlet 601; a universal water-through joint 7; a ball part 701; an external thread portion 702; a tap joint 8; a pinch portion 801.

Description of the embodiments

The utility model is further described below with reference to the accompanying drawings.

The tap water purifier of the utility model, as shown in fig. 1 to 3, comprises a filter element 4, wherein the filter element 4 can be a ceramic filter element or an active carbon filter element, the tap water purifier of the utility model also comprises a valve shell 1, a valve element 2 and a filter element cover 6, as shown in fig. 11, a vertical tube shell 12 is formed at the upper part of the valve shell 1, as shown in fig. 3, the lower end part of the filter element cover 6 is in sealing connection with the vertical tube shell 12, specifically, the lower end part of the filter element cover 6 is in screwed connection with the vertical tube shell 12, a corresponding sealing ring is arranged between the lower end part of the filter element cover 6 and the vertical tube shell 12, the filter element 4 is arranged in a cavity enclosed by the filter element cover 6 and the vertical tube shell 12, specifically, the lower part of the filter element 4 is positioned in the vertical tube shell 12, and the upper part of the filter element 4 is positioned in the filter element cover 6. As shown in fig. 11, a horizontal pipe chamber 11 is formed in the lower part of the valve housing 1, as shown in fig. 9 to 11, a clean water inlet 101 and a raw water inlet 103 are respectively formed in the upper part of the horizontal pipe chamber 11, a clean water outlet 102 and a raw water outlet 104 are respectively formed in the lower part of the horizontal pipe chamber 11, the clean water inlet 101 is arranged opposite to the clean water outlet 102, and the raw water inlet 103 is arranged corresponding to the raw water outlet 104. As shown in fig. 7 and 8, a rotating shaft 21 is formed at one end of the valve core 2, a water purifying notch 201 and a tap water notch 202 are formed on the rotating shaft 21, the water purifying notch 201 and the tap water notch 202 are distributed on the rotating shaft axis of the rotating shaft 21, specifically, the tap water notch 202 is located at the left side of the water purifying notch 201, the water purifying notch 201 and the tap water notch 202 are arranged in an angle staggered manner, specifically, the staggered angle of the water purifying notch 201 and the tap water notch 202 is 90 °, in the visual direction of fig. 8, when the water purifying notch 201 is downward, the tap water notch 202 is forward. As shown in fig. 3, the rotating shaft 21 is inserted into the horizontal pipe cavity 11 from right to left, the left end of the horizontal pipe cavity 11 is provided with a closed mouth, as shown in fig. 2, the lower end of the filter element 4 is provided with a filter element water outlet joint 401, the filter element water outlet joint 401 is connected with the clean water inlet 101 in a communicated manner, specifically, as shown in fig. 11, a filter element connecting pipe 121 is coaxially arranged in the standpipe shell 12, as shown in fig. 9, the clean water inlet 101 is positioned in the filter element connecting pipe 121, as shown in fig. 3, the filter element water outlet joint 401 is adapted to be inserted into the filter element connecting pipe 121 from top to bottom, and the filter element water outlet joint 401 and the filter element connecting pipe 121 are sealed by corresponding sealing rings. As shown in fig. 14, a tap water inlet 601 is formed at the upper end of the cartridge cover 6, and as shown in fig. 3, the tap water inlet 601 is provided in communication with the raw water inlet 103, and the tap water inlet 601 is provided in communication with the outer wall of the cartridge 4. The rotary shaft 21 has a raw water position and a purified water position with respect to the horizontal lumen 11, as shown in fig. 5 and 6, in the raw water position, the raw water inlet 103 and the raw water outlet 104 are connected through the tap water through notch 202 and the rotary shaft 21 closes the purified water inlet 101, as shown in fig. 3 and 4, in the purified water position, the purified water inlet 101 and the purified water outlet 102 are connected through the purified water through notch 201 and the rotary shaft 21 closes the raw water inlet 103.

The working principle of the tap water purifier of the present utility model is briefly described as follows: as shown in fig. 3, since the clean water inlet 101 is connected to the clean water outlet 102 through the clean water through-hole 201 and the rotating shaft 21 closes the raw water inlet 103, then tap water is injected into the inner cavity of the filter core cover 6 from the tap water inlet 601, tap water fills the inner cavity of the filter core cover 6, tap water enters the interior of the filter core 4 through the filter core 4 by the action of water pressure, as shown in fig. 4, clean water filtered by the filter core 4 is discharged from the filter core water outlet joint 401 to the clean water inlet 101, flows directly downwards to the clean water outlet 102 through the clean water through-hole 201, and is discharged through the clean water outlet 102, that is, the clean water through-hole 201 avoids the clean water flow, so that the clean water is discharged smoothly, and the clean water outlet speed is relatively accelerated. When raw water needs to be used, the valve core 2 can be rotated by 90 degrees by a right hand, so that the rotating shaft 21 rotates to the position shown in fig. 5, in this state, since the raw water inlet 103 and the raw water outlet 104 are connected through the tap water through notch 202 and the rotating shaft 21 seals the purified water inlet 101, after tap water fills the inner cavity of the filter core cover 6 and the filter core 4, since the purified water inlet 101 is sealed, tap water only flows into the raw water inlet 103, and tap water is discharged from the raw water outlet 104 through the tap water through notch 202. Because the existing filter and the waterway switching valve are integrally arranged, the faucet water purifier has a simple appearance structure, is beneficial to reducing the occupied space of the faucet water purifier, and can prevent the faucet water purifier from preventing a user from performing operations such as dish washing or dish washing at a dish washing position; because the purified water and the raw water are discharged at the corresponding positions of the lower part of the valve housing 1, after the raw water gear and the purified water gear are switched by the user, the water flow can effectively flow into the water kettle without moving the water kettle; the tap water purifier of the utility model is convenient to use.

Further, as shown in fig. 7 and 8, the rotating shaft 21 is embedded with the closed-loop sealing strip 22 and the sealing ring 23, the sections of the closed-loop sealing strip 22 and the sealing ring 23 are all circular, the closed-loop sealing strip 22 is enclosed outside the water purification water inlet opening 201, the sealing ring 23 is opposite to the tap water inlet opening 202, that is, the sealing ring 23 is located behind the tap water inlet opening 202, as shown in fig. 6, the closed-loop sealing strip 22 is used for enclosing the clean water inlet 101 at the raw water blocking position, as shown in fig. 6, the clean water inlet opening 201 is opposite to the clean water inlet 101, but the closed-loop sealing strip 22 is enclosed outside the clean water inlet 101, and the closed-loop sealing strip 22 is in close contact with the inner wall of the horizontal pipe cavity 11 at the same time, so that the clean water inlet 101 is enclosed, and when the rotating shaft 21 rotates 90 degrees, the clean water inlet opening 201 rotates to the position shown in fig. 4, at this moment, the closed-loop sealing strip 22 encloses the clean water inlet 101 and the clean water outlet 102 together, thereby avoiding the clean water leakage, and the clean water can reach the clean water outlet 102 from the clean water inlet 101 through the clean water inlet opening 201. As shown in fig. 3, the sealing ring 23 is used for enclosing the raw water inlet 103 at the position of the purified water blocking position, and the sealing ring 23 is in close contact with the inner wall of the horizontal pipe cavity 11 at the same time, so that the leakage of the tap water through the raw water inlet 103 in the purified water blocking position is avoided, and as shown in fig. 5, when the rotating shaft 21 rotates to the raw water blocking position, the sealing ring 23 is arranged opposite to the tap water through notch 202, so that the sealing ring 23 does not prevent the water flowing through the tap water through notch 202. By arranging the sealing ring 23 and the closed-loop sealing strip 22, the sealing effect of the rotating shaft 21 on the water inlet 101 is enhanced in the raw water gear, and the sealing effect of the rotating shaft 21 on the water inlet 103 is enhanced in the raw water gear.

Further, as shown in fig. 7, the other end corresponding to the valve core 2 is formed with a coupling portion 24, as shown in fig. 3 and 6, the coupling portion 24 is protruded from the right side of the valve housing 1, and the waterway switching knob 3 is mounted on the coupling portion 24, specifically, one end of the waterway switching knob 3 is adapted to be arranged outside the coupling portion 24, and one end of the waterway switching knob 3 is in key connection with the coupling portion 24, and the other end corresponding to the waterway switching knob 3 is formed with a deflector rod, so when a user dials the waterway switching knob 3, the waterway switching knob 3 drives the rotating shaft 21 to rotate, thereby facilitating the user to operate and switch the raw water gear and the purified water gear.

Further, as shown in fig. 7 and 8, the rotating shaft 21 is sleeved with a right sealing ring 25 and a left sealing ring 26, the right sealing ring 25 and the left sealing ring 26 are in sealing connection with the inner wall of the horizontal lumen 11, the closed-loop sealing strip 22 is arranged between the right sealing ring 25 and the left sealing ring 26, the left sealing ring 26 is arranged between the closed-loop sealing strip 22 and the sealing ring 23, and the right sealing ring 25 is arranged between the closed-loop sealing strip 22 and the connecting portion 24, so, as shown in fig. 6, the left sealing ring 26 can further separate the tap water through notch 202 from the purified water through notch 201, and the right sealing ring 25 can prevent water from leaking from one end of the horizontal lumen 11, which is used for being inserted into the rotating shaft 21.

Further, as shown in fig. 1 to 3, the faucet water purifier of the present utility model further comprises a universal water passing joint 7 and a faucet joint 8 for connecting a faucet, as shown in fig. 13, a ball head part 701 is formed at the upper end of the universal water passing joint 7, an external thread part 702 is formed at the lower end of the universal water passing joint 7, the ball head part 701 is connected with the faucet joint 8, the external thread part 702 is screwed with a tap water inlet 601, specifically, an internal thread for connecting a faucet is formed at the upper end of the faucet joint 8, an anti-slip pattern is formed on the outer wall of the faucet joint 8, a corresponding sealing ring is arranged between the inner wall of the faucet joint 8 and the ball head part 701, a necking part 801 is formed at the lower end of the faucet joint 8, and the necking part 801 is contacted with the lower part of the ball head part 701, so that the ball head part 701 is prevented from being separated from the faucet joint 8 downwards.

Further, as shown in fig. 1 to 3, the lower end cover of the valve housing 1 is provided with a bottom shell 5, as shown in fig. 12, the bottom of the bottom shell 5 is provided with a main water drain hole 501, as shown in fig. 6, the main water drain hole 501 is arranged below the corresponding part of the water purifying water outlet 102, as shown in fig. 12, the bottom of the bottom shell 5 is provided with an auxiliary water drain hole 5011, the auxiliary water drain hole 5011 is surrounded on the outer side of the main water drain hole 501, that is, the main water drain hole 501 is arranged singly, and the inner diameter of the main water drain hole 501 is larger than the inner diameter of the auxiliary water drain hole 5011. As shown in fig. 12, a raw water drain hole 502 is formed at the bottom of the bottom case 5, as shown in fig. 3 and 6, the raw water drain hole 502 is communicated with the raw water outlet 104, as shown in fig. 12, the raw water drain hole 502 is dispersedly arranged at the outer side of the purified water auxiliary drain hole 5011, as shown in fig. 3, the purified water main drain hole 501 and the purified water auxiliary drain hole 5011 are mutually separated from the raw water drain hole 502, specifically, a barrier fence part is formed at the outer side of the purified water auxiliary drain hole 5011, so that the purified water auxiliary drain hole 5011 is separated from the raw water drain hole 502, as shown in fig. 10, raw water is sprayed out through the raw water drain hole 502, which is favorable for forceful scouring of dishes to be cleaned, quickening the cleaning process and avoiding detergent residues. By setting the raw water and the purified water to be coaxial water outlet structures, the position change of water flow injection during the gear switching of the raw water and the purified water is avoided, and the use of users is facilitated.

Claims

1. A compact tap water purifier comprising a filter element (4), characterized in that: the water purifier further comprises a valve housing (1), a valve core (2) and a filter core cover (6), wherein a vertical pipe housing (12) is formed at the upper part of the valve housing (1), the lower end part of the filter core cover (6) is in sealing connection with the vertical pipe housing (12), the filter core (4) is arranged in a cavity surrounded by the filter core cover (6) and the vertical pipe housing (12), a transverse pipe cavity (11) is formed in the lower part of the valve housing (1), a water purifying water inlet (101) and a raw water inlet (103) are respectively formed at the upper part of the transverse pipe cavity (11), a water purifying water outlet (102) and a raw water outlet (104) are respectively formed at the lower part of the transverse pipe cavity (11), the water purifying water inlet (101) and the water purifying water outlet (102) are arranged right opposite to each other, a rotating shaft (21) is formed at one end of the filter core (2), a water purifying water passing notch (201) and a tap water passing notch (202) are formed in the rotating shaft (21), water passing notch (21) are respectively formed in the rotating shaft (21), the water passing notch (202) is arranged in the rotating shaft (201), the rotating shaft (201) and the notch (201) is arranged in the rotating shaft, the lower end of the filter element (4) is provided with a filter element water outlet connector (401), the filter element water outlet connector (401) is communicated with the purified water inlet (101), the upper end of the filter element cover (6) is provided with a tap water inlet (601), the tap water inlet (601) is communicated with the raw water inlet (103), and the tap water inlet (601) is communicated with the outer wall of the filter element (4); the rotary shaft (21) is provided with a raw water position and a purified water position relative to the horizontal pipe cavity (11), in the raw water position, the raw water inlet (103) is connected with the raw water outlet (104) through the tap water through notch (202) in a connecting way, the rotary shaft (21) is closed with the purified water inlet (101), in the purified water position, the purified water inlet (101) is connected with the purified water outlet (102) through the purified water through notch (201) in a connecting way, and the rotary shaft (21) is closed with the raw water inlet (103).

2. The compact faucet water purifier of claim 1, wherein: the water purification device is characterized in that a closed-loop sealing strip (22) and a sealing ring (23) are embedded on the rotating shaft (21), the closed-loop sealing strip (22) is arranged on the outer side of the water purification notch (201) in a surrounding mode, the sealing ring (23) and the tap water notch (202) are arranged in a back-to-back mode, the closed-loop sealing strip (22) is used for surrounding the water purification water inlet (101) at a raw water blocking position, and the sealing ring (23) is used for surrounding the raw water inlet (103) at the water purification blocking position.

3. The compact faucet water purifier of claim 2, wherein: the valve core (2) is correspondingly provided with a connecting part (24) at the other end, the connecting part (24) protrudes out of the valve shell (1), and the connecting part (24) is provided with a waterway switching rotary handle (3).

4. A compact faucet water purifier as recited in claim 3, wherein: the rotary shaft (21) is sleeved with a right sealing ring (25) and a left sealing ring (26), the right sealing ring (25) and the left sealing ring (26) are in sealing connection with the inner wall of the transverse lumen (11), the closed-loop sealing strip (22) is arranged between the right sealing ring (25) and the left sealing ring (26), the left sealing ring (26) is arranged between the closed-loop sealing strip (22) and the sealing ring (23), and the right sealing ring (25) is arranged between the closed-loop sealing strip (22) and the connecting part (24).

5. The compact faucet water purifier of claim 1, wherein: still include universal water-passing joint (7) and be used for connecting tap's tap joint (8), the upper end of universal water-passing joint (7) is formed with bulb portion (701), the lower extreme of universal water-passing joint (7) is formed with external screw thread portion (702), bulb portion (701) with tap connects (8) and is connected, external screw thread portion (702) with running water inlet (601) spiro union.

6. The compact faucet water purifier of claim 1, wherein: the bottom end cover of valve casing (1) is equipped with drain pan (5), the bottom of drain pan (5) is formed with water purification main drainage hole (501), water purification main drainage hole (501) are located water purification delivery port (102) correspond the below, the bottom of drain pan (5) is formed with water purification auxiliary drainage hole (5011), water purification auxiliary drainage hole (5011) enclose to locate the outside of water purification main drainage hole (501), the bottom of drain pan (5) is formed with raw water drainage hole (502), raw water drainage hole (502) with raw water delivery port (104) intercommunication sets up, raw water drainage hole (502) divide the scatter in the outside of water purification auxiliary drainage hole (5011), water purification main drainage hole (501) with water purification auxiliary drainage hole (5011) with raw water drainage hole (502) mutual separation sets up.