CN211228812U - Floor drain with low head loss - Google Patents
Floor drain with low head loss Download PDFInfo
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- CN211228812U CN211228812U CN201921816134.5U CN201921816134U CN211228812U CN 211228812 U CN211228812 U CN 211228812U CN 201921816134 U CN201921816134 U CN 201921816134U CN 211228812 U CN211228812 U CN 211228812U
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Abstract
The utility model discloses a floor drain with low head loss, which comprises a shell unit and a water inlet unit, wherein the water inlet unit is arranged in the shell unit; the inner side surface of the water inlet unit is provided with a first flow guide curved surface, the inner side surface of the shell unit is provided with a second flow guide curved surface, fluid flows along the first flow guide curved surface and the second flow guide curved surface in sequence after entering the water inlet unit, and the bottom end of the second flow guide curved surface forms a water outlet at the bottom end of the floor drain. The first diversion curved surface and the second diversion curved surface are arranged, so that the positions where water flows through in the floor drain are curved surfaces or basically curved surfaces, the curved surfaces are utilized to divert the water flow, the energy loss of water flow impact is reduced, the flow velocity of the water flow is large, and the drainage flow is improved. In addition, when water flows through the first flow guide curved surface and the second flow guide curved surface, a coanda effect is generated, so that the interior of the floor drain and a drain pipe connected with the floor drain are filled with water, a siphon phenomenon is formed, and the drainage flow is further increased.
Description
Technical Field
The utility model relates to a floor drain especially relates to a floor drain of low head loss.
Background
The inside turning of traditional floor drain is numerous, and during the drainage, high-speed rivers impact and produce the splash effect of splashing, cause energy loss to influence the velocity of flow, reduce the drainage flow. Therefore, the floor drain with the curved surface inside is provided in the prior art, however, the floor drain is only provided with a small section of curved surface at the top of the inner side, the small section of curved surface only plays a role in initial diversion, and the problem of large energy loss caused by water flow impact cannot be effectively solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a floor drain of low head loss to the technical problem that prior art exists.
The utility model provides a technical scheme that its technical problem adopted is: a floor drain with low head loss comprises a shell unit and a water inlet unit, wherein the water inlet unit is positioned in the shell unit; the inner side surface of the water inlet unit is provided with a first flow guide curved surface, the inner side surface of the shell unit is provided with a second flow guide curved surface, fluid flows along the first flow guide curved surface and the second flow guide curved surface in sequence after entering the water inlet unit, and the bottom end of the second flow guide curved surface forms a water outlet at the bottom end of the floor drain.
Further, the vertical section of the first flow guiding curved surface and/or the second flow guiding curved surface comprises the steepest curve.
Further, the water inlet device also comprises a core which is positioned in the shell unit and is connected with the water inlet unit in a way of moving up and down; the core and the water inlet unit are matched to form a drainage sealing position, the core moves downwards to open drainage, and the core resets upwards to close drainage.
Furthermore, a third flow guiding curved surface is arranged on the outer surface of the core.
Further, when the core moves downwards, a flow passage formed between the core and the shell unit forms a Venturi tube.
Furthermore, the core is of a hollow structure, and the core is reset through a first elastic piece, and the first elastic piece is located in the core.
Further, the core is of a flat sphere or a sphere structure.
Furthermore, the water inlet unit comprises a water inlet seat, a support in threaded connection with the bottom of the water inlet seat, and a sealing ring arranged between the support and the water inlet seat; the first flow guide curved surface comprises an upper flow guide curved surface arranged on the inner side surface of the water inlet unit and a lower flow guide curved surface arranged on the bracket and the sealing ring, and the upper flow guide curved surface is connected with the second flow guide curved surface through the lower flow guide curved surface; the core is movably connected to the water inlet seat and matched with the sealing ring to form a drainage sealing position.
Furthermore, a plurality of guide plates are distributed on the top of the inner side of the water inlet seat along the circumferential direction and used for preventing vortex from forming.
Further, the shell unit comprises a panel, a connector and a base, the top of the connector is in threaded connection with the panel, the bottom of the connector is in threaded connection with the base, and the second flow guide curved surface is arranged on the inner side surface of the base.
Furthermore, a rotating ring capable of rotating around the axis of the water inlet unit is sleeved outside the water inlet unit, at least one limiting block is arranged on the outer side surface of the rotating ring, upper tooth parts and lower tooth parts which are distributed at intervals in the axial direction and face each other are arranged in the shell unit, and the upper tooth parts are provided with inlet and outlet grooves for the limiting blocks to enter and exit; move into water unit and drive the stopper in the axial and cooperate with last tooth portion and lower tooth portion in proper order or cooperate with lower tooth portion and last tooth portion in proper order, and the stopper realizes being connected of water unit and shell unit with when going out the groove dislocation, realizes the separation of water unit and shell unit when the stopper aligns with the groove of going out.
Furthermore, the number of the limiting blocks is a plurality, and the limiting blocks are uniformly distributed along the circumferential direction of the rotating ring; the number of the outlet grooves is multiple, the upper tooth parts are separated into a plurality of tooth blocks distributed along the circumferential direction of the shell unit through the outlet grooves, two lower tooth peaks spaced left and right are respectively arranged at the bottoms of the tooth blocks, and a tooth valley used for clamping the limiting block is formed at the interval between the two lower tooth peaks.
Furthermore, the lower tooth part is a circle of helical teeth, and each helical tooth and the lower tooth peak are distributed in a staggered manner; the two lower tooth peaks of the tooth block are respectively in a helical tooth shape, and the inclination direction of the two lower tooth peaks is opposite to that of helical teeth of the lower tooth part; the top of each tooth block is provided with at least one upper tooth peak respectively.
Furthermore, the top surface of the limiting block is an upper inclined surface, and the inclined direction of the upper inclined surface is the same as that of the lower tooth crest; the bottom surface of the limiting block is a lower inclined surface, and the inclined direction of the lower inclined surface is the same as the inclined direction of the inclined teeth of the lower tooth part.
Furthermore, a second elastic piece is matched between the water inlet unit and the shell unit, so that the water inlet unit can be pressed along the axial direction.
Further, the second elastic piece comprises an annular reed and a plurality of strip-shaped reeds distributed along the circumferential direction of the annular reed, and each strip-shaped reed is formed by cutting and bending a part of the annular reed along the circumferential direction; each strip-shaped reed is respectively in an inclined shape, and the inclined directions are consistent; the annular reeds are sleeved on the water inlet unit, and the bottom ends of the strip reeds are respectively abutted against the shell unit.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the first diversion curved surface and the second diversion curved surface are arranged, so that the positions where water flows through in the floor drain are curved surfaces or basically curved surfaces, the curved surfaces are utilized to divert the water flow, the energy loss of water flow impact is reduced, the flow velocity of the water flow is large, and the drainage flow is improved. In addition, when water flows through the first flow guide curved surface and the second flow guide curved surface, a coanda effect is generated, so that the interior of the floor drain and a drain pipe connected with the floor drain are filled with water, a siphon phenomenon is formed, and the drainage flow is further increased.
2. The vertical cross section of first water conservancy diversion curved surface and/or second water conservancy diversion curved surface includes the fastest curve, can further improve the velocity of flow of rivers to further improve drainage flow.
3. Because the core is positioned in the shell unit, the core does not occupy the drainage area of the drainage pipe, so that the drainage pipe can realize full-caliber drainage, and further realize large-flow drainage.
4. The outer surface of the core is provided with a third flow guide curved surface, so that the energy loss caused by water flow impacting the core can be further reduced, and the water flow speed and the drainage flow are further improved.
5. When the core moves downwards, a flow channel formed between the core and the shell unit forms a Venturi tube, so that a negative pressure region can be formed at the bottom of the core, the negative pressure region generates a downward pulling force on the core to pull down the core, the core is in a fully open state, and the drainage flow rate is guaranteed to reach the maximum value.
6. The guide plate can play the effect of anti-swirl, makes the interior water inlet of the unit of intaking even reach the biggest to further increase drainage flow.
7. The rotating ring and the limiting blocks thereof, the upper tooth parts and the lower tooth parts are arranged, so that the water inlet unit can be quickly assembled and disassembled, and a user can conveniently clean and maintain the water inlet unit and the core.
The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the utility model discloses a floor drain of low head loss is not limited to the embodiment.
Drawings
FIG. 1 is an exploded schematic view of the present invention;
fig. 2 is a schematic structural view (embodying the front side) of the water inlet seat of the present invention;
fig. 3 is a schematic structural view of a water inlet seat of the present invention (reflecting the back side);
FIG. 4 is a sectional view of the water inlet seat of the present invention;
FIG. 5 is a schematic structural view of another water inlet seat of the present invention;
fig. 6 is a schematic structural diagram of the base of the present invention;
fig. 7 is a cross-sectional view of the base of the present invention;
FIG. 8 is a cross-sectional view of a cartridge of the present invention;
fig. 9 is a schematic structural view of the rotating ring of the present invention;
fig. 10 is a schematic structural view of the stop collar of the present invention;
fig. 11 is a first schematic view of the working state of the present invention;
fig. 12 is a second schematic view of the working state of the present invention;
fig. 13 is a third schematic view of the working state of the present invention;
fig. 14 is a first schematic view of the installation state of the present invention;
fig. 15 is a schematic view of the installation state of the present invention;
fig. 16 is a schematic view of the disassembled state of the present invention;
fig. 17 is an exploded view of the present invention in an assembled state;
fig. 18 is an exploded view of the operation of the present invention in the disassembled state.
Detailed Description
In the embodiment, please refer to fig. 1 to 18, the floor drain with low head loss of the present invention comprises a housing unit 6 and a water inlet unit 2, wherein the water inlet unit 2 is located in the housing unit 6; the inner side surface of the water inlet unit 2 is provided with a first flow guide curved surface 26, the inner side surface of the shell unit 6 is provided with a second flow guide curved surface 653, fluid flows along the first flow guide curved surface 26 and the second flow guide curved surface 653 in sequence after entering the water inlet unit 2, and the bottom end of the second flow guide curved surface 653 forms a water outlet at the bottom end of the floor drain. The vertical sections of the first guide curved surface 26 and the second guide curved surface 653 respectively comprise steepest curves, so that the flow velocity of the fluid is faster.
In this embodiment, the water inlet unit 2 includes a water inlet seat 22, a support 24 screwed to the bottom of the water inlet seat 22, and a sealing ring 23 disposed between the support 24 and the water inlet seat 22, wherein the outer side of the bottom of the support 24 and the outer side of the top of the water inlet seat 22 are respectively sleeved with sealing rings 21 and 25; the first diversion curved surface 26 comprises an upper diversion curved surface 223 arranged on the inner side surface of the water inlet unit 2 and a lower diversion curved surface 231 arranged on the support 24 and the sealing ring 23, and the upper diversion curved surface 223 is connected with the second diversion curved surface 653 through the lower diversion curved surface 231. The vertical cross-section of the upper curved flow guide surface 223 includes a steepest curve 2231, and specifically, the steepest curve 2231 is located between two ends of the vertical cross-section of the upper curved flow guide surface 223.
In this embodiment, a plurality of baffles 221 are circumferentially distributed on the top of the inner side of the water inlet seat 22 to prevent the formation of a vortex. The plurality of baffles 221 are distributed in a diverging manner with the mounting portion 222 disposed in the middle of the water inlet seat 22 as a center, and each baffle 221 is located in a radial direction of the water inlet seat 22, but not limited thereto, in other embodiments, the plurality of baffles 221' are distributed in a spiral manner along a counterclockwise direction or a clockwise direction, as shown in fig. 5.
In this embodiment, the housing unit 6 includes a panel 61, a joint 63, and a base 65, wherein the top of the joint 63 is in threaded connection with the panel 61, and a seal ring 62 is fitted between the two, the bottom of the joint 63 is in threaded connection with the base 65, and a seal ring 64 is fitted between the two; the second flow guiding curved surface 653 is arranged on the inner side surface of the base, the vertical section of the second flow guiding curved surface 653 comprises a steepest curve 6531, and specifically, the steepest curve 6531 is the middle part of the vertical section of the second flow guiding curved surface 653.
In this embodiment, the present invention further comprises a core 56, wherein the core 56 is located in the housing unit 6 and is connected to the water inlet unit 2 in a way of moving up and down; the core 56 forms a drain sealing position in cooperation with the water inlet unit 2, the core 56 opens the drain by moving downward, and a flow passage formed between the core 56 and the housing unit 6 constitutes a venturi tube when the core 56 moves downward. The cartridge 56 closes the drainage by returning upward, and specifically, the cartridge 56 is returned by the first elastic member. The core 56 is a hollow structure, and the first elastic member is located in the core 56, so that contact with water is avoided, and the service life of the first elastic member is prolonged.
In this embodiment, the outer surface of the core 56 is provided with a third flow guiding curved surface 561, the core 56 is in a flat sphere structure, specifically, the core 56 is in an ellipsoid structure in a horizontal state, the top of the core 56 is provided with an opening 562, the opening 562 extends upwards to form a cylinder, the opening 562 is in threaded connection with a rotation stopping member 52, the rotation stopping member 52 is sleeved on the mounting portion 222 arranged in the middle of the water inlet seat 22 in a vertically movable manner, the first elastic member is specifically a spring 54, a connecting rod 55 sequentially penetrates through the spring 54 and the rotation stopping member 52 upwards and is in threaded connection with the mounting portion 222 of the water inlet seat 22, and the spring 54 abuts between the bottom of the connecting rod 55 and the rotation stopping member 52. Sealing rings 53 and 51 are respectively fitted between the rotation stopper 52 and the core 56, and between the rotation stopper 52 and the link 55. The core 56, the spring 54, the rotation stopper 52, the link 55, and the seal rings 53, 51 constitute the core unit 5. In other embodiments, the core is a spherical ball structure.
In this embodiment, the water inlet unit 2 is externally sleeved with a rotating ring 3 capable of rotating around the axis thereof, the outer side surface of the rotating ring 3 is provided with at least one limiting block 31, the shell unit 6 is internally provided with an upper tooth part and a lower tooth part which are axially distributed at intervals and face each other, and the upper tooth part is provided with an access groove 71 for the limiting block 31 to enter and exit; move into water unit 2 in the axial and drive the stopper in proper order with last tooth portion and lower tooth portion cooperation or in proper order with lower tooth portion and last tooth portion cooperation, and stopper 31 realizes being connected of water unit 2 and shell unit 6 with the business turn over groove 71 dislocation time, realizes into water unit 2 and shell unit 6's separation when stopper 31 aligns with business turn over groove 71. The rotating ring 3 is specifically sleeved outside the bracket 24 of the water inlet unit 2.
In this embodiment, the number of the limiting blocks 31 is several, and the limiting blocks 31 are uniformly distributed along the circumferential direction of the rotating ring 3; the number of the outlet grooves 71 is plural, the plurality of outlet grooves 71 divide the upper tooth part into a plurality of tooth blocks 72 distributed along the circumferential direction of the housing unit 6, the bottom of each tooth block 72 is respectively provided with two lower tooth peaks 721 and 722 spaced left and right, and the space between the two lower tooth peaks 721 and 722 forms a tooth valley 723 for clamping the stopper 31. The number of the access grooves 71 is larger than that of the stoppers 31, and the access grooves 71 and the stoppers 31 are in a multiple relationship, but not limited to this, and in other embodiments, the access grooves 71 and the stoppers 31 are equal in number. The top of each tooth block 72 has an upper peak 723.
In this embodiment, the lower tooth portion is a circle of inclined teeth 651, and each inclined tooth 651 is staggered with the lower tooth peaks 721, 722; the two lower teeth 721, 722 of the tooth block 72 are each in the form of a helical tooth, and the direction of inclination thereof is opposite to the direction of inclination of the helical tooth 651 of the lower tooth. The top surface of the stop block 31 is an upper inclined surface 311, and the inclined direction of the upper inclined surface 311 is the same as that of the lower peaks 721, 722; the bottom surface of the stop block 31 is a lower inclined surface 312, and the inclined direction of the lower inclined surface 312 is the same as the inclined direction of the inclined teeth 651 of the lower tooth part.
In this embodiment, the upper tooth portion is specifically disposed on an inner side surface of a limiting ring 7, the limiting ring is fixedly sleeved in the housing unit 6, specifically, the limiting ring 7 is sleeved in the joint 63 of the housing unit 6 and is limited between the annular step disposed on the inner side surface of the joint 63 and the base 65, and in order to avoid rotation of the limiting ring 7, a plurality of positioning grooves 73 are disposed on the limiting ring 7 and are engaged with a plurality of positioning blocks 652 disposed on the top end of the base 65 one by one. The lower tooth part is specifically arranged on the inner side surface of the base 65 of the water inlet unit 2.
In this embodiment, the second elastic element 4 is fitted between the water inlet unit 2 and the housing unit 6, so that the water inlet unit 2 can be pressed in the axial direction, but the present invention is not limited thereto, and in other embodiments, the water inlet unit 2 is assembled and disassembled by being pushed and pulled. The second elastic part 4 comprises an annular reed 41 and a plurality of strip reeds 42 distributed along the circumferential direction of the annular reed 41, and each strip reed 42 is formed by cutting and bending a part of the annular reed 41 along the circumferential direction; each strip-shaped reed 42 is respectively in an inclined shape, and the inclined directions are consistent; the ring-shaped reeds 41 are sleeved outside the bracket 24 of the water inlet unit 2, and the bottom ends of the strip-shaped reeds 42 respectively abut against the base 65 of the housing assembly. The second elastic piece 4 is arranged, so that the water inlet unit 2 is assembled and disassembled by being axially pressed, and the operation is more convenient and labor-saving. The second elastic member 4 preferably comprises the ring-shaped spring 41 and the strip-shaped spring 42, and has the characteristics of small occupied space, difficulty in losing, uniform stress and the like. In other embodiments, the second resilient member is a spring.
In this embodiment, the utility model discloses still include floor drain cover 1, this floor drain cover 1 lid connects on the panel 61 of shell unit 6.
The utility model discloses a floor drain of low head loss because its core 56 is located shell unit 6, therefore core 56 can not occupy the drainage area S0 of the drain pipe 8 of being connected with the floor drain, as shown in FIG. 11, makes drain pipe 8 realize the drainage of full bore to further realize large-traffic drainage. During drainage, water enters the water inlet seat 22, and under the action of the guide plate 221, the water cannot form a vortex phenomenon at the center of the water inlet seat 22, so that the water inlet amount in the water inlet seat 22 reaches the maximum state, and the drainage flow is increased. When the water pressure of the drain acts on the top of the core 56, the core 56 and the rotation stop 52 compress the spring 54 and move downward, opening the drain seal to drain, as shown in FIG. 11. When the core 56 moves downwards, the water passing area of the flow channel formed between the core 56 and the base 65 is firstly reduced and then increased from top to bottom (as shown in fig. 12, the water passing area S1 is smaller than the water passing area S2), so as to form a venturi tube, thereby forming a negative pressure region 9 at the bottom of the core 56, as shown in fig. 12, the negative pressure region 9 generates a downward pulling force on the core 56 to pull down the core 56, so that the core 56 is in a fully opened state, and the drainage flow rate is ensured to reach the maximum value. In the drainage process, water flows along the first diversion curved surface 26 and the second diversion curved surface 653, as shown in fig. 12, the flow velocity reaches the fastest speed, the energy loss caused by water flow impact is reduced, and moreover, when the water flows through the first diversion curved surface 26 and the second diversion curved surface 653, the coanda effect is generated, so that the interior of the floor drain and the drainage pipe are filled with water, a siphon phenomenon is formed, and the drainage flow is further increased.
At the end of the drainage, the cartridge 56 and the rotation stopper 25 are moved upward by the spring 54, so that the cartridge 56 closes the drainage seal position, as shown in fig. 13, thereby preventing the back flooding and the back odor. When the back overflow water exists, the core 56 floats upwards under the buoyancy action of the back overflow water (the core 56 is equivalent to an air bag structure), and bears the pressure of the back overflow water, so that the sealing effect of the drainage sealing position is enhanced.
The utility model discloses a floor drain of low head loss, its water inlet unit 2, core unit 5, swivel ring 3, second elastic component 4 constitute the core assembly, and its shell unit 6, spacing ring 7 constitute the shell assembly. During installation, the two parts of the shell assembly and the core assembly are respectively assembled, and then the core assembly is placed into the shell assembly, as shown in fig. 14. Next, the water inlet seat 22 of the cartridge assembly is pressed, as shown in FIG. 15, to complete the connection of the cartridge assembly and the housing assembly. When the cartridge assembly needs to be disassembled, the water inlet seat 22 of the cartridge assembly is pressed, and then the cartridge assembly is lifted upwards, as shown in fig. 16.
Specifically, referring to fig. 17, the detailed installation process of the core assembly is as follows: when the water inlet seat 22 is pressed, each limiting block 31 on the rotating ring 3 starts to move towards the upper tooth part, as shown in a small drawing a of fig. 17; when the lower inclined surface 312 of each stopper 31 on the rotating ring 3 contacts the upper peak 723 of the corresponding tooth block 72 of the upper tooth part, the rotating ring 3 rotates a certain angle under the guidance of the inclined surface at one side of the upper peak 723, as shown in the b small diagram of fig. 17, until the stopper 31 smoothly enters the inlet and outlet groove 71, as shown in the c small diagram of fig. 17; as the core assembly is further pressed, the lower inclined surface 312 of each stopper 31 contacts with the lower tooth portion, as shown in the d-bar diagram of fig. 17, and the rotating ring 3 rotates a certain angle again under the guide of the inclined teeth 651 of the lower tooth portion until the lower inclined surface 312 of the stopper 31 reaches the lowest position of the inclined teeth 651, as shown in the e-bar diagram of fig. 17, at which time the core assembly is pressed in place, and after the hand is released, the core assembly moves upward under the restoring force of the elastic member 4, as shown in the f-bar diagram of fig. 17, the upper inclined surface 311 of each stopper 31 contacts with one of the lower peaks 721 of the tooth block 72, and under the action of the lower peaks 721, the rotating ring 3 rotates a certain angle again until the stopper 31 is caught in the valley 723 of the tooth block 72, as shown in the g-bar diagram of fig. 17, at which time, the stopper 31 is also at the final position when the installation of the core assembly is completed.
Referring to fig. 18, the detailed disassembly process of the cartridge assembly is: when the water inlet seat 22 is pressed, each stopper 31 on the rotating ring 3 starts to separate from the valley 723 of the tooth block 72 and moves towards the lower tooth part, as shown in the small h diagram of fig. 18; when the lower inclined surface 312 of the stopper 31 contacts with the inclined teeth 651 of the lower tooth portion, the rotary ring 3 is rotated by a certain angle under the guide of the inclined teeth 651 until the lower inclined surface 312 of the stopper 31 reaches the lowest position of the inclined teeth 651, as shown in the small i diagram of fig. 18, at this time, the core assembly is pressed in place, and after the hand is released, the core assembly is moved upward by the restoring force of the elastic member 4, as shown in the small j diagram of fig. 18, so that the upper inclined surface 311 of each stopper 31 contacts with the other lower crest 722 of the tooth block 72, and under the action of the lower crest 722, the rotary ring 3 is rotated again by a certain angle, so that the stopper 31 reaches the position aligned with the access slot 71, as shown in the small k diagram of fig. 9, and under the restoring force of the elastic member 4, the core assembly is moved upward by a certain distance as a whole, so that the stopper 31 passes upward through the access slot 71, as shown in the small l diagram. At this point, the core assembly can be removed.
The above-mentioned embodiment only is used for further explaining the utility model discloses a floor drain of low head loss, nevertheless the utility model discloses do not confine the embodiment to, all be according to the utility model discloses a technical entity is to any simple modification, the equivalent change and the modification of making of above embodiment, all falls into the utility model discloses technical scheme's protection within range.
Claims (16)
1. A floor drain with low head loss comprises a shell unit and a water inlet unit, wherein the water inlet unit is positioned in the shell unit; the method is characterized in that: the inner side surface of the water inlet unit is provided with a first flow guide curved surface, the inner side surface of the shell unit is provided with a second flow guide curved surface, fluid flows along the first flow guide curved surface and the second flow guide curved surface in sequence after entering the water inlet unit, and the bottom end of the second flow guide curved surface forms a water outlet at the bottom end of the floor drain.
2. A low head loss floor drain according to claim 1, characterized in that: the vertical section of the first flow guiding curved surface and/or the second flow guiding curved surface comprises a steepest curve.
3. A low head loss floor drain according to claim 1, characterized in that: the core is positioned in the shell unit and can be connected with the water inlet unit in an up-and-down motion manner; the core and the water inlet unit are matched to form a drainage sealing position, the core moves downwards to open drainage, and the core resets upwards to close drainage.
4. A low head loss floor drain according to claim 3, characterized in that: and a third flow guide curved surface is arranged on the outer surface of the core.
5. A low head loss floor drain according to claim 3, characterized in that: when the core moves downwards, a flow passage formed between the core and the shell unit forms a Venturi tube.
6. A low head loss floor drain according to claim 3, characterized in that: the core is of a hollow structure and resets through a first elastic piece, and the first elastic piece is located in the core.
7. A low head loss floor drain according to claim 4, characterized in that: the core is of a flat sphere or a sphere structure.
8. A low head loss floor drain according to claim 3, characterized in that: the water inlet unit comprises a water inlet seat, a support in threaded connection with the bottom of the water inlet seat, and a sealing ring arranged between the support and the water inlet seat; the first flow guide curved surface comprises an upper flow guide curved surface arranged on the inner side surface of the water inlet unit and a lower flow guide curved surface arranged on the bracket and the sealing ring, and the upper flow guide curved surface is connected with the second flow guide curved surface through the lower flow guide curved surface; the core is movably connected to the water inlet seat and matched with the sealing ring to form a drainage sealing position.
9. The low head loss floor drain of claim 8, characterized in that: a plurality of guide plates are distributed on the top of the inner side of the water inlet seat along the circumferential direction and used for preventing vortex from forming.
10. A low head loss floor drain according to claim 1, characterized in that: the shell unit comprises a panel, a joint and a base, the top of the joint is in threaded connection with the panel, the bottom of the joint is in threaded connection with the base, and the inner side face of the base is provided with the second flow guide curved surface.
11. A low head loss floor drain according to any of the claims 1-10, characterized in that: the water inlet unit is sleeved with a rotating ring which can rotate around the axis of the water inlet unit, the outer side surface of the rotating ring is provided with at least one limiting block, an upper tooth part and a lower tooth part which are axially distributed at intervals and face each other are arranged in the shell unit, and the upper tooth part is provided with an access groove for the limiting block to enter and exit; move into water unit and drive the stopper in the axial and cooperate with last tooth portion and lower tooth portion in proper order or cooperate with lower tooth portion and last tooth portion in proper order, and the stopper realizes being connected of water unit and shell unit with when going out the groove dislocation, realizes the separation of water unit and shell unit when the stopper aligns with the groove of going out.
12. A low head loss floor drain according to claim 11, characterized in that: the number of the limiting blocks is a plurality, and the limiting blocks are uniformly distributed along the circumferential direction of the rotating ring; the number of the outlet grooves is multiple, the upper tooth parts are separated into a plurality of tooth blocks distributed along the circumferential direction of the shell unit through the outlet grooves, two lower tooth peaks spaced left and right are respectively arranged at the bottoms of the tooth blocks, and a tooth valley used for clamping the limiting block is formed at the interval between the two lower tooth peaks.
13. A low head loss floor drain according to claim 12, characterized in that: the lower tooth part is a circle of helical teeth, and each helical tooth and the lower tooth peak are distributed in a staggered manner; the two lower tooth peaks of the tooth block are respectively in a helical tooth shape, and the inclination direction of the two lower tooth peaks is opposite to that of helical teeth of the lower tooth part; the top of each tooth block is provided with at least one upper tooth peak respectively.
14. A low head loss floor drain according to claim 13, characterized in that: the top surface of the limiting block is an upper inclined surface, and the inclined direction of the upper inclined surface is the same as that of the lower tooth crest; the bottom surface of the limiting block is a lower inclined surface, and the inclined direction of the lower inclined surface is the same as the inclined direction of the inclined teeth of the lower tooth part.
15. A low head loss floor drain according to claim 11, characterized in that: and a second elastic piece is matched between the water inlet unit and the shell unit, so that the water inlet unit can be pressed along the axial direction.
16. A low head loss floor drain according to claim 15, characterized in that: the second elastic piece comprises an annular reed and a plurality of strip reeds distributed along the circumferential direction of the annular reed, and each strip reed is formed by cutting and bending a part of the annular reed along the circumferential direction; each strip-shaped reed is respectively in an inclined shape, and the inclined directions are consistent; the annular reeds are sleeved on the water inlet unit, and the bottom ends of the strip reeds are respectively abutted against the shell unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921816134.5U CN211228812U (en) | 2019-10-25 | 2019-10-25 | Floor drain with low head loss |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921816134.5U CN211228812U (en) | 2019-10-25 | 2019-10-25 | Floor drain with low head loss |
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| CN211228812U true CN211228812U (en) | 2020-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115106870A (en) * | 2022-07-07 | 2022-09-27 | 北京特思迪半导体设备有限公司 | Double-sided polishing machine and liquid discharge tank thereof |
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2019
- 2019-10-25 CN CN201921816134.5U patent/CN211228812U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115106870A (en) * | 2022-07-07 | 2022-09-27 | 北京特思迪半导体设备有限公司 | Double-sided polishing machine and liquid discharge tank thereof |
| CN115106870B (en) * | 2022-07-07 | 2024-04-09 | 北京特思迪半导体设备有限公司 | Double-sided polishing machine and liquid discharge groove thereof |
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