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CN-115654174-B - Anti-reverse water suction device and closestool

CN115654174BCN 115654174 BCN115654174 BCN 115654174BCN-115654174-B

Abstract

The invention discloses a reverse-absorption-preventing device and a closestool, wherein the reverse-absorption-preventing device comprises a shell and a valve body, the shell is provided with a cavity, the shell is provided with a water outlet and an air inlet which are communicated with the cavity, the bottom end of the cavity is provided with a boss, the top end of the boss is higher than the water outlet, the boss is provided with a water inlet, the water outlet end of the water inlet penetrates through the top end of the boss, the top end of the side wall of the boss is provided with a notch, the valve body can be installed in the cavity in a vertical sliding manner, the valve body is provided with a partition structure, when the water inlet is filled with water, the valve body can be pushed to slide upwards to a first position, the partition structure can partition the air inlet from the cavity, and when the valve body slides downwards to a second position, the top end of the boss is abutted to the bottom end of the partition structure or the bottom end of the valve body, so that the partition structure is positioned above the water outlet. According to the anti-reverse water absorption device and the closestool, scale generated by the partition structure can be reduced, so that the effect of the partition structure on partitioning the air inlet and the cavity is better, the generation of whistle is reduced, and the user experience is improved.

Inventors

  • KE HAILIN
  • ZHANG CHENG

Assignees

  • 箭牌家居集团股份有限公司

Dates

Publication Date
20260512
Application Date
20221012

Claims (7)

  1. 1. Prevent reverse water sucking device, its characterized in that includes: The shell is provided with a cavity, the shell is provided with a water outlet and an air inlet which are communicated with the cavity, the bottom end of the cavity is provided with a boss, the top end of the boss is higher than the water outlet, the boss is provided with a water inlet, the water outlet end of the water inlet penetrates through the top end of the boss, and the top end of the side wall of the boss is provided with a notch; the valve body can be installed in the cavity in a vertical sliding mode, the valve body is provided with a partition structure, a first position and a second position are arranged in the sliding process of the valve body, when water enters the water inlet, water can push the valve body to slide upwards to the first position, the partition structure can partition the air inlet and the cavity, and when the valve body slides downwards to the second position, the top end of the boss is abutted to the bottom end of the partition structure or the bottom end of the valve body, so that the partition structure is positioned above the water outlet; the bottom end of the valve body is provided with an annular guide part, the side wall of the annular guide part is provided with an air vent, when the valve body slides to the second position, the annular guide part is inserted into the water inlet, and the notch is positioned at the outer side of the air vent; The top end of the cavity is provided with a guide channel communicated with the air inlet, the valve body is slidably arranged in the guide channel, the partition structure is arranged on the outer side wall of the valve body along the circumferential direction of the valve body, and when the valve body slides to the first position, the top end of the partition structure is abutted to the circumferential side of the bottom end of the guide channel; The valve body is provided with a valve cavity, the top end of the valve cavity is provided with a first through hole, the bottom end of the valve cavity is provided with a second through hole, a valve core capable of sliding up and down is arranged in the valve cavity, the valve core seals the second through hole, when water enters the water inlet, water can push the valve core to slide upwards to release the sealing of the second through hole, and the thrust required by the water to push the valve core to slide upwards is greater than the thrust required by the water to push the valve body to slide upwards; The side wall of the valve body is provided with an opening communicated with the valve cavity, and the top end of the valve core is higher than the bottom end of the opening, or a gap is reserved between the outer side wall of the valve core and the inner side wall of the valve cavity; the notch is used for solving whistle generated by the extremely small gap between the boss and the partition structure due to high-speed flowing gas generated by negative pressure when the top end of the boss is abutted to the bottom end of the partition structure.
  2. 2. The anti-reverse water sucking device as claimed in claim 1, wherein the water inlet is vertically provided at the boss.
  3. 3. The reverse water sucking prevention device as claimed in claim 1, wherein a sealing ring is provided at a top end of the partition structure along a circumferential direction of the partition structure, and the sealing ring abuts against a circumferential side of the bottom end of the guide passage when the valve body slides to the first position.
  4. 4. The anti-reverse water sucking device as claimed in claim 1, wherein a gap is reserved between an outer side wall of the valve body and an inner side wall of the guide channel.
  5. 5. The anti-reverse water sucking device as claimed in claim 1, wherein the housing is provided with a pressure relief port communicating with the guide passage, the pressure relief port being lower than the air inlet.
  6. 6. The anti-reverse water sucking device according to claim 1 or 2, wherein the housing comprises: The first sub-shell is provided with a first clamping part; the second sub-shell is abutted to the first sub-shell and can rotate relative to the first sub-shell, the second sub-shell and the first sub-shell are enclosed to form the cavity, and the second sub-shell is provided with a second clamping part; In the process of relative rotation of the second sub-shell and the first sub-shell, the first clamping part and the second clamping part can be mutually clamped or separated.
  7. 7. Toilet bowl, characterized by comprising a reverse suction prevention device according to any one of claims 1 to 6.

Description

Anti-reverse water suction device and closestool Technical Field The invention relates to the technical field of bathrooms, in particular to a reverse water absorption preventing device and a closestool. Background The closestool is generally connected with a tap water pipe network, when the tap water pipe network is cut off, negative pressure is generated, and in order to prevent water in the closestool from polluting the water in the tap water pipe network due to the fact that the water in the closestool is sucked into the tap water pipe network by the negative pressure, a reverse water suction preventing device is arranged between the closestool and the tap water pipe network in the related art. The existing anti-reverse water absorption device generally comprises a shell, wherein the shell is provided with a cavity, the shell is provided with a water inlet, a water outlet and an air inlet which are communicated with the cavity, the water inlet is connected with a tap water pipe network, the water outlet is connected with a water inlet pipeline of a toilet, a valve body is arranged in the cavity in a sliding mode, the valve body is provided with a partition structure, when the tap water pipe network supplies water normally, the valve body slides to enable the partition structure to partition the air inlet from the cavity, when the tap water pipe network stops water to generate negative pressure, the valve body slides to enable the partition structure to release the partition between the air inlet and the cavity, the water inlet is communicated with the air inlet, and then the tap water pipe network can directly absorb the atmosphere when generating negative pressure, and can not suck polluted water in the toilet reversely from the water outlet. However, when not in use, water may remain below the water outlet in the cavity, and the partition structure may be soaked in the water remaining in the cavity, so that scale is easily generated by the partition structure, and the effect of the partition structure on partitioning the air inlet and the cavity is poor. In addition, when running water pipe network cuts off water and produces the negative pressure, the valve body slides to laminating water inlet under the effect of negative pressure easily, and then produces sharp whistle sound easily, and user experience is poor. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the anti-reverse water absorption device, which can reduce scale generated by the partition structure, so that the effect of the partition structure for partitioning the air inlet and the cavity is better, in addition, the generation of whistle can be reduced, and the user experience is improved. The invention also provides a closestool with the anti-reverse water absorption device. According to the embodiment of the invention, the anti-reverse water absorption device comprises a shell and a valve body, wherein the shell is provided with a cavity, the shell is provided with a water outlet and an air inlet which are communicated with the cavity, the bottom end of the cavity is provided with a boss, the top end of the boss is higher than the water outlet, the boss is provided with a water inlet, the water outlet end of the water inlet penetrates through the top end of the boss, the top end of the side wall of the boss is provided with a notch, the valve body is installed in the cavity in a sliding mode, the valve body is provided with a partition structure, the valve body is provided with a first position and a second position in the sliding process, when water enters the water inlet, water can push the valve body to slide upwards to the first position, the partition structure is used for partitioning the air inlet and the cavity, and when the valve body slides downwards to the second position, the top end of the boss is abutted to the bottom end of the partition structure or the bottom end of the valve body is positioned above the water outlet. The anti-reverse water absorption device provided by the embodiment of the invention has at least the following beneficial effects: According to the anti-reverse water absorption device, the water inlet is connected with an external tap water pipe network, the water outlet is connected with the water inlet pipeline of the closestool, the air inlet is connected with the outside, when the tap water pipe network supplies water normally, water entering the water inlet pushes the valve body to slide upwards to the first position, the partition structure of the valve body partitions the air inlet and the cavity to prevent water from being discharged through the air inlet, when the tap water pipe network stops water, the valve body slides downwards to the second position under the action of self gravity, the partition structure of the valve body releases the partition between the air inlet and the cavi