WO2022218010A1 - 一种口腔清洗装置用的带安全阀的水泵 - Google Patents

一种口腔清洗装置用的带安全阀的水泵 Download PDF

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Publication number
WO2022218010A1
WO2022218010A1 PCT/CN2022/074731 CN2022074731W WO2022218010A1 WO 2022218010 A1 WO2022218010 A1 WO 2022218010A1 CN 2022074731 W CN2022074731 W CN 2022074731W WO 2022218010 A1 WO2022218010 A1 WO 2022218010A1
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Prior art keywords
safety valve
water
pump
seat
pump body
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PCT/CN2022/074731
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English (en)
French (fr)
Inventor
刘飞
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上海飞象健康科技有限公司
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Application filed by 上海飞象健康科技有限公司 filed Critical 上海飞象健康科技有限公司
Priority to JP2022600130U priority Critical patent/JP3243120U/ja
Publication of WO2022218010A1 publication Critical patent/WO2022218010A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the invention relates to a water pump for an oral cleaning device, in particular to a water pump with a safety valve for an oral cleaning device.
  • the water jet oral cleaning device as a new type of oral cleaning auxiliary appliance, can well clean the gap between the teeth and has a better cleaning effect.
  • the existing water pump when scale or foreign matter blocks the water outlet pipeline or the nozzle, the water in the pump chamber cannot be discharged, resulting in the overpressure damage of the water pump.
  • a water pump with a safety valve for an oral cleaning device is required to solve the problem that when the water outlet is blocked, the water in the pump cavity cannot be discharged, resulting in the overpressure damage of the water pump.
  • the purpose of the present invention is to provide a water pump with a safety valve for an oral cleaning device, which is used to solve the problem that the water pump cannot drain water due to the blockage of the water outlet of the oral cleaning device in the prior art and thus overpressure damage problem.
  • the present invention provides a water pump with a safety valve for an oral cleaning device, comprising: a pump body assembly and a water pump power assembly, the pump body assembly including a pump body with a water inlet and a water outlet , and a piston arranged in the pump body, the piston is connected with the water pump power assembly, and the water pump power assembly drives the piston to reciprocate;
  • the water pump also includes a safety valve
  • the safety valve includes a safety valve seat, an elastic member and a safety valve head, the safety valve head is connected with the safety valve seat through an elastic member
  • the pump body is provided with a safety valve port that communicates with the pump body, and the safety valve seat is arranged at the safety valve port,
  • the safety valve head is located in the safety valve port and blocks the safety valve port under the action of the elastic member.
  • a water pump with a safety valve for an oral cleaning device of the present invention has the following beneficial effects: when the water outlet of the water pump is blocked, the piston moves toward the outside of the pump cavity of the pump body, and negative pressure is formed in the pump cavity, Under the action of atmospheric pressure, water enters the pump chamber from the water inlet. When the piston moves toward the pump chamber, the space of the pump chamber is compressed. However, due to the blockage of the water outlet, the water cannot be ejected from the water outlet, and the water pressure in the pump chamber is increasing. so that the water pressure in the pump cavity received by the safety valve head exceeds the pressure exerted by the elastic member on the safety valve head.
  • the elastic member is compressed, the safety valve port is opened, and the water is discharged from the safety valve. , reducing the water pressure in the pump cavity and ensuring the safety of the water pump; the invention avoids the problem that the water pump cannot drain water due to the blockage of the water outlet and is damaged by overpressure through the safety valve arranged on the water pump of the oral cleaning device.
  • the water inlet of the pump body is provided with a water inlet seat
  • the water inlet seat is provided with a one-way valve plate
  • a sealing component is arranged between the water inlet seat and the pump body, and the one-way valve
  • the sheet ensures that the water can only flow into the pump body from the water inlet seat, but cannot flow out from the water inlet seat; when the piston moves out of the pump chamber, the water will enter the pump chamber from the water inlet seat under the action of atmospheric pressure.
  • the valve plate is in the open state; when the piston moves toward the pump chamber, the space of the pump chamber is compressed, and the one-way valve plate is in the closed state at this time, and the water will not flow out from the water inlet, and the one-way valve plate ensures the one-way flow of water.
  • the sealing assembly ensures that the water in the pump body will not leak out from the water inlet seat.
  • the safety valve head is a soft elastomer.
  • the end of the safety valve head is spherical, so that the water pressure in the pump cavity received by each position on the safety valve head is more uniform, and the response to the water pressure is more accurate and sensitive.
  • the safety valve seat is provided with a water inlet hole and a groove for placing the elastic member, the groove communicates with the safety valve port, the water inlet hole communicates with the water inlet, and The groove is communicated with the water inlet hole through the communication hole; on the one hand, the groove plays a limiting role on the elastic member, and on the other hand, the safety valve port is connected with the water inlet port, so that the design is used when the water outlet port When blocked, the water discharged from the safety valve port will flow back into the pump chamber through the water inlet under the action of the piston, so there is no need to set additional pipelines to export the water discharged from the safety valve port; the safety valve seat has a water inlet hole to realize The integrated design of the water inlet and overpressure protection of the pump body is easy to install; and there is a seal between the safety valve seat and the pump body, which ensures that water will not flow from the connection between the safety valve seat and the pump body. Seepage at the seam.
  • the water outlet is provided with a water outlet seat and a water outlet valve sheet for unidirectional flow of the water outlet, a sealing ring is provided between the water outlet seat and the pump body, and the water outlet valve sheet ensures that water can only flow out from the water outlet seat
  • the water outlet valve is closed, and the water cannot flow into the pump body from the water outlet;
  • the space of the pump chamber is compressed,
  • the water is sprayed from the outlet seat, and the outlet valve sheet is in the open state at this time, the outlet valve sheet ensures the one-way flow of water
  • the sealing ring ensures that the water in the pump body will not seep out from the outlet seat.
  • the water outlet is provided with a flow stop elastic member
  • the flow stop elastic member is connected with the water outlet valve sheet and provides a force for the water outlet valve sheet to block the water outlet
  • the direct current elastic member ensures that the When the oral cleaning device is in a static state, the water entering the pump cavity from the water inlet will not break through the water outlet valve sheet, resulting in water leakage at the water outlet.
  • FIG. 1 is a schematic diagram of a water pump with a safety valve for an oral cleaning device according to the present invention.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 .
  • FIG. 3 is a cross-sectional view taken along line AA in FIG. 1 when the water outlet is blocked.
  • the present invention provides a water pump with a safety valve for an oral cleaning device, comprising a pump body assembly and a water pump power assembly 2, the pump body assembly comprising a pump body 1 with a water inlet and a water outlet, And the piston 4 arranged in the pump body 1, the piston 4 is connected with the water pump power assembly 2, and the water pump power assembly 2 drives the piston 4 to reciprocate;
  • the water pump also includes a safety valve, which includes a safety valve seat 10, an elastic member 11 and a safety valve
  • the head 12 the safety valve head 12 is connected with the safety valve seat 10 through the elastic member 11, the safety valve seat 10 is arranged on the pump body 1, and the pump body 1 is provided with a safety valve port that is connected to the pump body 1, the safety valve The head 12 is located in the safety valve port, and the safety valve port is blocked under the action of the elastic member 11 .
  • the water pump power assembly 2 drives the piston 4 to reciprocate. Negative pressure, water enters the pump chamber from the water inlet under the action of atmospheric pressure, when the piston 4 moves toward the pump chamber (ie, into the pump body 1), it compresses the pump chamber space, and the water is ejected from the water outlet. At this time, the pump is completed.
  • One pumping and spraying cycle, and then the piston 4 continues to move out of the pump cavity to continue the next cycle.
  • the water pressure in the pump cavity received by the safety valve head 12 is always lower than the pressure exerted by the elastic member 11.
  • the safety valve port is in a closed state; but when the water outlet of the water pump is blocked, the piston 4 moves out of the pump chamber of the pump body 1, and a negative pressure is formed in the pump chamber, and the water enters the pump chamber from the water inlet under the action of atmospheric pressure.
  • the piston 4 moves toward the pump chamber, the space of the pump chamber is compressed, but due to the blockage of the water outlet, the water cannot be ejected from the water outlet, and the water pressure in the pump chamber is increasing, so that the safety valve head 12 is affected by the pump.
  • the water pressure in the cavity exceeds the pressure exerted by the elastic member 11 on the safety valve head 12.
  • the elastic member 11 is compressed, the safety valve port is opened, and the water is discharged from the safety valve, reducing the water pressure in the pump cavity. , ensuring the safety of the water pump; the invention avoids the problem that the water pump cannot drain water due to the blockage of the water outlet and is damaged by overpressure through the safety valve arranged on the water pump of the oral cleaning device.
  • the water inlet of the pump body 1 is provided with a water inlet seat 3, the water inlet seat 3 is provided with a one-way valve plate 5, and the water inlet seat 3 is connected to the pump.
  • There is a sealing assembly between the body 1, and the one-way valve plate 5 ensures that the water can only flow into the pump body 1 from the water inlet seat 3, but cannot flow out from the water inlet seat 3; when the piston 4 moves out of the pump cavity, the water is at atmospheric pressure.
  • the pump Under the action of the pump, it will enter the pump chamber from the water inlet seat 3, and the one-way valve plate 5 is in the open state at this time; when the piston 4 moves toward the pump chamber, the space of the pump chamber is compressed, and the one-way valve plate 5 is in the closed state at this time.
  • the water will not flow out from the water inlet, the one-way valve plate 5 ensures the one-way circulation of the water, and the sealing assembly ensures that the water in the pump body 1 will not seep out from the water inlet seat 3 .
  • the safety valve head 12 is made of rubber, and other soft elastomers with waterproof performance can also be used.
  • the opening of the safety valve port is a spherical groove, and the end of the corresponding safety valve head 12 is spherical, so that the safety valve head 12 fits better with the safety valve port.
  • the tightness of the safety valve head 12 also makes the water pressure in the pump chamber received by each position on the safety valve head 12 more uniform, and the response to the water pressure is more accurate.
  • the safety valve seat 10 is provided with a water inlet hole and a groove for placing the elastic member 11, and the groove communicates with the safety valve port.
  • the water inlet hole communicates with the water inlet of the pump body, and the groove and the water inlet hole communicate with each other through the communication hole; on the one hand, the groove plays a role in limiting the position of the elastic member 11, and on the other hand, the safety valve port and the water inlet are connected.
  • a seal 13 is provided between the safety valve seat 10 and the pump body 1 , and the seal 13 ensures that water will not seep out from the joint between the safety valve seat 10 and the pump body 1 .
  • the water inlet seat 3 is integrated with the safety valve seat 10, and the water inlet hole provided on the safety valve seat 10 plays the role of the water inlet seat, so it is convenient to install and use.
  • the water outlet is provided with a water outlet seat 6 and a water outlet valve piece 8 for unidirectional flow of the water outlet, and there is a sealing ring between the water outlet seat 6 and the pump body 1 7.
  • the water outlet valve plate 8 ensures that water can only flow out of the pump body 1 from the water outlet seat 6, but cannot flow in from the water outlet seat 6; when the piston 4 moves out of the pump cavity, the water outlet valve plate 8 is in a closed state at this time, and water cannot flow. It flows into the pump body 1 from the water outlet seat 6; when the piston 4 moves toward the pump chamber, the space of the pump chamber is compressed, and the water is sprayed from the water outlet seat 6.
  • the water outlet valve plate 8 is in the open state, and the water outlet valve plate 8 ensures the single flow of water.
  • the sealing ring 7 ensures that the water in the pump body 1 will not seep out from the water outlet seat 6 .
  • the water outlet is also provided with a flow stop elastic body 9.
  • the flow stop elastic body 9 is connected to the water outlet valve sheet 8 and provides a force for the water outlet valve sheet 8 to block the water outlet.
  • the body 9 ensures that when the oral cleaning device is in a static state, the water entering the pump cavity from the water inlet will not break through the water outlet valve sheet 8, resulting in water leakage from the water outlet; further, in this embodiment, a compression spring is used as the flow stop elastic Body 9, as shown in Figures 2 and 3, the water outlet seat 6 is provided with a groove, one end of the compression spring is set in the groove, the other end of the compression spring is abutted on the water outlet valve sheet 8, and the compression spring is applied to the outlet valve plate 8.
  • the resilient force on the outlet valve sheet 8 maintains the closed state of the outlet valve sheet 8, and the structure is simple and easy to install; as another embodiment, the flow stop elastic body 9 is a tension spring, and the tension spring is located on the outlet valve sheet 8 away from the water outlet seat 6 The two ends of the tension spring are connected to the pump body 1 and the outlet valve sheet 8 respectively, and the tension force exerted by the tension spring on the outlet valve sheet 8 is used to maintain the closed state of the outlet valve sheet 8. This structure is also used to facilitate installation. maintain.
  • the present invention is a water pump with a safety valve for an oral cleaning device.
  • the safety valve provided on the pump body 1 solves the problem that when the water outlet is blocked, the water in the pump cavity cannot be discharged, resulting in overpressure damage to the water pump.
  • the problem. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Safety Valves (AREA)

Abstract

一种口腔清洗装置用的带安全阀的水泵，包括：泵体组件、水泵动力组件（2）和安全阀，泵体组件包括带进水口和出水口的泵体（1），以及设于泵体（1）中的活塞（4），活塞（4）与水泵动力组件（2）相连，水泵动力组件（2）带动活塞（4）往复运动，安全阀包括安全阀座（10）、弹性件（11）和安全阀头（12），安全阀头（12）通过弹性件（11）与安全阀座（10）相连，安全阀座（10）设于泵体（1）上，且泵体（1）上开设有与泵体（1）内导通的安全阀口，安全阀头（12）位于安全阀口中且在弹性件（11）的作用下将安全阀口封堵。该水泵通过设置在泵体上的安全阀，在出水口堵塞时，能够将泵腔中的水排出，避免了水泵过压损坏。

Description

一种口腔清洗装置用的带安全阀的水泵 技术领域
本发明涉及一种口腔清洗装置的水泵，特别是涉及一种口腔清洗装置用的带安全阀的水泵。
背景技术
如今随着人们对口腔卫生越来越重视，对口腔的清洁要求越来越高，据权威专家指出，普通的日常刷牙主要解决的是牙齿表面的清洁问题，而对于牙齿两侧的牙齿表面和牙缝处，都不能够很好的清洁。因此喷水式口腔清洗装置作为新型的口腔清洁辅助用具，能够很好的对牙齿缝隙处清洁且清洁效果更好。现有的水泵在使用时当水垢或异物堵塞住出水管路或喷头时，泵腔中的水无法排出，导致水泵过压损坏。
因此需要一种口腔清洗装置用的带安全阀的水泵，来解决当出水口堵塞时，泵腔中的水无法排出，导致水泵过压损坏的问题。
发明内容
鉴于以上所述现有技术的缺点，本发明的目的在于提供一种口腔清洗装置用的带安全阀的水泵，用于解决现有技术中口腔清洗装置因出水口堵塞导致水泵无法排水进而过压损坏的问题。
为实现上述目的及其他相关目的，本发明提供一种口腔清洗装置用的带安全阀的水泵，包括：泵体组件以及水泵动力组件，所述泵体组件包括带进水口和出水口的泵体，以及设于泵体中的活塞，所述活塞与水泵动力组件相连，所述水泵动力组件带动所述活塞往复运动；所述水泵还包括安全阀，所述安全阀包括安全阀座、弹性件和安全阀头，所述安全阀头通过弹性件与所述安全阀座相连，所述泵体上开设有与泵体内导通的安全阀口，安全阀座设于所述安全阀口处，且所述安全阀头位于所述安全阀口中且在所述弹性件的作用下将所述安全阀口封堵。
如上所述，本发明的一种口腔清洗装置用的带安全阀的水泵，具有以下有益效果：当水泵的出水口阻塞时，活塞朝泵体的泵腔外运动，泵腔内形成负压，水在大气压的作用下，从进水口进入泵腔，当活塞朝泵腔运动时，压缩泵腔空间，但由于出水口阻塞，水无法从出水口喷出，泵腔内的水压越来越大，以至于安全阀头所受到的泵腔中的水压超过了所述弹性件施加在安全阀头上的压力，此时弹性件被压缩，安全阀口打开，水从安全阀处卸出，减小了 泵腔内的水压，保证了水泵的安全；本发明通过设置在口腔清洗装置的水泵上的安全阀避免了水泵因出水口堵塞导致水泵无法排水进而过压损坏的问题。
优选的，所述泵体的进水口中设有进水座，所述进水座上设有单向阀片，且进水座与所述泵体间设有密封组件，所述单向阀片保证了水只能从进水座流入泵体，而不能从进水座流出；当活塞朝泵腔外运动时，水在大气压的作用下，会从进水座进入泵腔，此时单向阀片为开启状态；当活塞朝泵腔运动时，压缩泵腔空间，此时单向阀片为关闭状态，水不会从进水口流出，所述单向阀片保证了水的单向流通，同时所述密封组件则保证了泵体内的水不会从进水座往外渗出。
优选的，为了加强所述安全阀头封堵安全阀头的密封性，所述安全阀头为软性弹性体。
优选的，所述安全阀头的端部为球形，使的安全阀头上各个位置所受到的泵腔中的水压更加均匀，对于水压的反应更加准确灵敏。
优选的，所述安全阀座上设有进水孔以及置放所述弹性件的凹槽，所述凹槽与所述安全阀口相通，所述进水孔与所述进水口相通，且凹槽与所述进水孔通过连通孔相连通；所述凹槽一方面起到对所述弹性件的限位作用，一方面使得安全阀口与进水口导通，这样设计在当出水口堵塞时，从安全阀口卸出的水会在活塞的作用下，通过进水口回流进泵腔，则无需额外设置管路导出从安全阀口卸出的水；安全阀座带进水孔实现了泵体的进水与过压保护一体式设计，便于安装；且所述安全阀座与泵体之间设有密封件，通过密封件保证了水不会从安全阀座与泵体的接缝处渗出。
优选的，所述出水口处设有出水座和使出水口单向流通的出水阀片，所述出水座与泵体间具有密封圈，所述出水阀片保证了水只能从出水座流出泵体，而不能从出水座流入；当活塞朝泵腔外运动时，此时出水阀片为关闭状态，水无法从出水座流入泵体；当活塞朝泵腔运动时，压缩泵腔空间，水从出水座喷出，此时出水阀片为开启状态，所述出水阀片保证了水的单向流通，同时所述密封圈则保证了泵体内的水不会从出水座往外渗出。
优选的，所述出水口处设有止流弹性件，所述止流弹性件与出水阀片相连且提供使出水阀片封堵出水口的作用力，所述直流弹性件保证了当所述口腔清洗装置处于静置状态时，从进水口进入泵腔的水不会冲破出水阀片，导致出水口漏水。
附图说明
图1显示为本发明一种口腔清洗装置用的带安全阀的水泵的示意图。
图2显示为图1中AA线的剖视图。
图3显示为当出水口堵塞时图1中AA线的剖视图。
元件标号说明
1                      泵体
2                      水泵动力组件
3                      进水座
4                      活塞
5                      单向阀片
6                      出水座
7                      密封圈
8                      出水阀片
9                      止流弹性体
10                     安全阀座
11                     弹性件
12                     安全阀头
13                     密封件
具体实施方式
以下由特定的具体实施例说明本发明的实施方式，熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本发明的其他优点及功效。
请参阅图1至图3。须知，本说明书所附图中所绘示的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能产生的功效及所能达成的目的下，均应仍落在本发明所揭示的技术内容所能涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述的明了，而非用以限定本发明可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本发明可实施的范畴。
如图1和图2所示，本发明提供一种口腔清洗装置用的带安全阀的水泵，包括泵体组件以及水泵动力组件2，泵体组件包括带进水口和出水口的泵体1，以及设于泵体1中的活塞4，活塞4与水泵动力组件2相连，水泵动力组件2带动活塞4往复运动；水泵还包括安全阀，安全阀包括安全阀座10、弹性件11和安全阀头12，安全阀头12通过弹性件11与安全阀座10相连，安全阀座10设于泵体1上，且泵体1上开设有与泵体1内导通的安全阀口，安全 阀头12位于安全阀口中且在弹性件11的作用下将安全阀口封堵。
本实施例的一种口腔清洗装置用的带安全阀的水泵在正常运行时，水泵动力组件2带动活塞4做往复运动，当活塞4朝泵体1的泵腔外运动时，泵腔内形成负压，水在大气压的作用下，从进水口进入泵腔，当活塞4朝泵腔(即向泵体1内)运动时，压缩泵腔空间，水从出水口喷出，此时水泵完成一个抽水喷水循环，接着活塞4继续朝泵腔外运动继续下一循环，在整个抽水喷水循环之中安全阀头12所收到的泵腔中的水压始终小于弹性件11施加的压力，安全阀口处于闭合的状态；但当水泵的出水口阻塞时，活塞4朝泵体1的泵腔外运动，泵腔内形成负压，水在大气压的作用下，从进水口进入泵腔，当活塞4朝泵腔运动时，压缩泵腔空间，但由于出水口阻塞，水无法从出水口喷出，泵腔内的水压越来越大，以至于安全阀头12所受到的泵腔中的水压超过了弹性件11施加在安全阀头12上的压力，此时弹性件11被压缩，安全阀口打开，水从安全阀处卸出，减小了泵腔内的水压，保证了水泵的安全；本发明通过设置在口腔清洗装置的水泵上的安全阀避免了水泵因出水口堵塞导致水泵无法排水进而过压损坏的问题。
为了实现水泵单向进水的功能，如图1所示，泵体1的进水口中设有进水座3，进水座3上设有单向阀片5，且进水座3与泵体1间设有密封组件，单向阀片5保证了水只能从进水座3流入泵体1，而不能从进水座3流出；当活塞4朝泵腔外运动时，水在大气压的作用下，会从进水座3进入泵腔，此时单向阀片5为开启状态；当活塞4朝泵腔运动时，压缩泵腔空间，此时单向阀片5为关闭状态，水不会从进水口流出，单向阀片5保证了水的单向流通，同时密封组件则保证了泵体1内的水不会从进水座3往外渗出。
在本实施例中，如图2和图3所示，为了加强安全阀头12封堵安全阀口的密封性，安全阀头12为橡胶，也可使用其他具有防水性能的软性弹性体。
在本实施例中，如图2和图3所示，安全阀口的开口为球形凹槽，对应的安全阀头12的端部为球形，这样安全阀头12与安全阀口的贴合更加的紧密，同样也使的安全阀头12上各个位置所受到的泵腔中的水压更加均匀，对于水压的反应更加准确。
作为安全阀的另一实施例，如图2和图3所示，本实施例中安全阀座10上设有进水孔以及置放弹性件11的凹槽，凹槽与安全阀口相通，进水孔与泵体的进水口相通，且凹槽与进水孔通过连通孔相连通；凹槽一方面起到对弹性件11的限位作用，一方面使得安全阀口与进水口导通，这样设计在当出水口堵塞时，从安全阀口卸出的水会在活塞4的作用下，通过进水口回流进泵腔则无需额外设置管路导出从安全阀口卸出的水；且安全阀座10与泵体1之间设有密封件13，通过密封件13保证了水不会从安全阀座10与泵体1的接缝处渗出。本实施例 将进水座3与安全阀座10集成为一体，安全阀座10上设置进水孔起到了进水座的作用，因此便于安装和使用。
为了实现水泵单向出水的功能，如图2和图3所示，出水口处设有出水座6和使出水口单向流通的出水阀片8，出水座6与泵体1间具有密封圈7，出水阀片8保证了水只能从出水座6流出泵体1，而不能从出水座6流入；当活塞4朝泵腔外运动时，此时出水阀片8为关闭状态，水无法从出水座6流入泵体1；当活塞4朝泵腔运动时，压缩泵腔空间，水从出水座6喷出，此时出水阀片8为开启状态，出水阀片8保证了水的单向流通，同时密封圈7则保证了泵体1内的水不会从出水座6往外渗出。
如图2和图3所示，出水口处还设有止流弹性体9，止流弹性体9与出水阀片8相连且提供使出水阀片8封堵出水口的作用力，止流弹性体9保证了当口腔清洗装置处于静置状态时，从进水口进入泵腔的水不会冲破出水阀片8，导致出水口漏水；进一步的，在本实施例中使用压簧作为止流弹性体9，如图2和图3所示，出水座6上设有凹槽，压簧的一端设于凹槽内，压簧的另一端抵设在出水阀片8上，利用压簧施加在出水阀片8上的回弹力来保持出水阀片8的闭合状态，结构简单安装方便；作为另一种实施方式，止流弹性体9为拉簧，拉簧位于出水阀片8背离出水座6的一侧，拉簧的两端分别与泵体1和出水阀片8相连，用拉簧施加在出水阀片8上的拉力来保持出水阀片8的闭合状态，同样采用这种结构便于安装维护。
综上，本发明一种口腔清洗装置用的带安全阀的水泵，通过设置在泵体1上的安全阀，解决了当出水口堵塞时，泵腔中的水无法排出，导致水泵过压损坏的问题。所以，本发明有效克服了现有技术中的种种缺点而具高度产业利用价值。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (7)

  1. 一种口腔清洗装置用的带安全阀的水泵，包括：
    泵体组件以及水泵动力组件，所述泵体组件包括带进水口和出水口的泵体，以及设于泵体中的活塞，所述活塞与水泵动力组件相连，所述水泵动力组件带动所述活塞往复运动；
    其特征在于，所述水泵还包括安全阀，所述安全阀包括安全阀座、弹性件和安全阀头，所述安全阀头通过弹性件与所述安全阀座相连，所述泵体上开设有与泵体内导通的安全阀口，安全阀座设于所述安全阀口处，且所述安全阀头位于所述安全阀口中且在所述弹性件的作用下将所述安全阀口封堵。
  2. 根据权利要求1所述的一种口腔清洗装置用的带安全阀的水泵，其特征在于：所述泵体的进水口中设有进水座，所述进水座上设有单向阀片，且进水座与所述泵体间设有密封组件。
  3. 根据权利要求1所述的一种口腔清洗装置用的带安全阀的水泵，其特征在于：所述安全阀头为软性弹性体。
  4. 根据权利要求3所述的一种口腔清洗装置用的带安全阀的水泵，其特征在于：所述安全阀头的端部为球形。
  5. 根据权利要求1所述的一种口腔清洗装置用的带安全阀的水泵，其特征在于：所述安全阀座上设有进水孔以及置放所述弹性件的凹槽，所述凹槽与所述安全阀口相通，所述进水孔与所述进水口相通，且凹槽与所述进水孔通过连通孔相连通，且所述安全阀座与泵体之间设有密封件。
  6. 根据权利要求1所述的一种口腔清洗装置用的带安全阀的水泵，其特征在于：所述出水口处设有出水座和使出水口单向流通的出水阀片，所述出水座与泵体间具有密封圈。
  7. 根据权利要求6所述的一种口腔清洗装置用的带安全阀的水泵，其特征在于：所述出水口处设有止流弹性件，所述止流弹性件与出水阀片相连且提供使出水阀片封堵出水口的作用力。
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