CN217067922U

CN217067922U - Prefilter with high-pressure buffer function

Info

Publication number: CN217067922U
Application number: CN202220634755.7U
Authority: CN
Inventors: 杨德峰; 吴少海; 刘小林; 朱航海
Original assignee: Haining Beishi Environmental Protection Technology Co ltd
Current assignee: Haining Beishi Environmental Protection Technology Co ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-07-29
Anticipated expiration: 2032-03-23

Abstract

The utility model relates to a leading filter with high pressure buffer function, including the aircraft nose of taking water inlet channel and water outlet channel, the filter flask and locate the filter mechanism in the filter flask, filter mechanism, the filter flask all can be dismantled with the aircraft nose and be connected, the space between filter mechanism and filter flask forms former water cavity, filter mechanism inner space forms the purification water cavity, the filter mechanism bottom is inwards equipped with buffer and holds the chamber, buffer includes one-way open-ended barrel, locate elastic element and the sealed lid in the barrel, the blind end of barrel is towards the inside of filter mechanism, elastic element's both ends respectively with barrel bottom wall and the inboard butt of sealed lid, sealed lid and barrel inner wall sliding seal, buffer holds the chamber still fixed limit structure that is equipped with outward, be used for restricting buffer in buffer holds the intracavity; the limit structure is provided with a water passing flow channel which is communicated with the sealing cover and the raw water cavity. The structure of the pre-filter is optimized, and the pre-filter is installed, used and maintained, and can not only prevent the impact of a water hammer, but also prevent freezing.

Description

Prefilter with high-pressure buffer function

Technical Field

The utility model relates to a leading filter with high pressure buffer function belongs to water purification unit accessory technical field.

Background

The prior art pre-filter comprises: the machine head, a filter flask with the upper end connected with the machine head and a drainage ball valve connected with the lower end of the filter flask are provided with a filter screen framework in which a filter screen is sleeved on the outer wall. In the using process, water flows into a gap between the filter flask and the filter screen from a water inlet of the machine head, flows into the center of the filter screen framework after being filtered by the filter screen, and then flows to a water outlet of the machine head from the center of the filter screen framework, and the front filter is deeply inserted into thousands of households and high-grade hotels.

The water hammer is a phenomenon that large pressure fluctuation is caused and vibration is caused due to rapid change of fluid flow in a closed pipeline system (including a pump and a pre-filter). Also known as water hammer. The instantaneous pressure can greatly exceed the normal pressure and often produce destructive effects. In addition, the existing pre-filter is easy to crack and leak water due to the expansion of the internal water volume under the condition of low-temperature icing; the existing general products have no good solution, and can only remind a user to keep warm or use a filter flask with good toughness, but the filter flask can also crack and leak water after being expanded and deformed for many times.

The utility model aims at providing a structure is more optimized, the leading filter that has high pressure buffer function of easy industrialization realization. The water hammer impact can be prevented, the freezing can be prevented, and the service life of the front filter is prolonged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the not enough of leading filter of prior art, provide a leading filter with high pressure buffer function. The structure of the pre-filter is optimized, and the pre-filter is installed, used and maintained, can prevent water hammer impact and freezing, and prolongs the service life of the pre-filter.

The utility model provides a technical scheme that its technical problem adopted is:

the pre-filter with the high-pressure buffering function comprises a machine head with a water inlet channel and a water outlet channel, a filter bottle and a filtering mechanism arranged in the filter bottle, wherein the filtering mechanism and the filter bottle are detachably connected with the machine head, a raw water cavity is formed in the space between the filtering mechanism and the filter bottle, a purified water cavity is formed in the inner space of the filtering mechanism, a buffering device accommodating cavity is arranged at the bottom end of the filtering mechanism inwards, the buffering device comprises a cylinder body with a one-way opening, an elastic element and a sealing cover, the elastic element is arranged in the cylinder body, the closed end of the cylinder body faces the inside of the filtering mechanism, the two ends of the elastic element are respectively abutted against the bottom wall of the cylinder body and the inner side of the sealing cover, the sealing cover is in sliding sealing with the inner wall of the cylinder body, and a limiting structure is fixedly arranged outside the buffering device accommodating cavity and used for limiting the buffering device in the buffering device accommodating cavity;

the limiting structure is provided with a water passing flow channel for communicating the sealing cover with the raw water cavity, when the pressure in the pre-filter rises, the elastic element can be compressed, and after the pressure rise is relieved, the elastic element can reset.

Preferably, the buffer device accommodating cavity is detachably connected with a framework of the filtering mechanism or integrally formed.

Preferably, the inner wall of the cylinder body is smooth, the sealing cover is provided with at least one annular sealing ring, and the sealing cover and the cylinder body are in interference fit through the annular sealing ring to realize sliding sealing.

Preferably, limit structure is spacing lid, spacing lid and filtering mechanism's skeleton pass through the mode of spiro union or joint can dismantle and be connected.

Preferably, the bottom of the filter flask is provided with a sewage discharge cavity, a sewage discharge piece is arranged in the sewage discharge cavity, and the sewage discharge piece is provided with a sewage discharge channel.

Preferably, the elastic element is a ring spring.

The utility model has the advantages that: the structure of the pre-filter is optimized, and the pre-filter is installed, used and maintained, can prevent water hammer impact and freezing, and prolongs the service life of the pre-filter. When the instantaneous pressure of the front filter system greatly exceeds the normal pressure, the elastic element is compressed and deformed to reduce the impact force; when the frozen volume of water in the front filter expands, the elastic element is compressed and deformed to make room for the expansion amount of the frozen volume, so that the pressure on the filter flask is reduced, and the service life of the filter flask is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural diagram of the present invention.

In the figure: 1. the device comprises a machine head, 2. a filter flask, 3. a filter mechanism, 4. a cylinder body, 5. an elastic element, 6. a sealing cover, 7. an annular sealing ring, 8. a limiting cover, 9. a sewage discharge part.

Detailed Description

The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings.

As shown in figures 1-2, the prefilter with high-pressure buffering function comprises a machine head 1 with a water inlet channel and a water outlet channel, a filter flask 2 and a filter mechanism 3 arranged in the filter flask 2, wherein the filter mechanism 3 and the filter flask 2 are both detachably connected with the machine head 1, a raw water cavity is formed in the space between the filter mechanism 3 and the filter flask 2, a purified water cavity is formed in the inner space of the filter mechanism 3, the bottom end of the filtering mechanism 3 is inwards provided with a buffer device accommodating cavity, the buffer device comprises a cylinder 4 with a one-way opening, an elastic element 5 arranged in the cylinder 4 and a sealing cover 6, the closed end of the cylinder 4 faces the inside of the filtering mechanism 3, two ends of the elastic element 5 are respectively abutted against the bottom wall of the cylinder 4 and the inner side of the sealing cover 6, the sealing cover 6 is in sliding sealing with the inner wall of the cylinder 4, a limiting cover 8 is fixedly arranged outside the buffer device accommodating cavity and used for limiting the buffer device in the buffer device accommodating cavity;

the limiting cover 8 is provided with a water passing flow channel for communicating the sealing cover 6 with the raw water cavity, when the pressure in the pre-filter rises, the elastic element 5 can be compressed, and after the pressure rise is relieved, the elastic element 5 can reset.

In this embodiment, buffer holds the skeleton that chamber and filter mechanism 3 and can dismantle and be connected or integrated into one piece, can dismantle the connection and can use the joint, preferred integrated into one piece, processing is convenient.

Preferably, the inner wall of the cylinder body 4 is smooth, the sealing cover 6 is provided with at least one annular sealing ring 7, sliding sealing is realized between the sealing cover 6 and the cylinder body 4 through interference fit of the annular sealing ring 7, and the sealing cover preferably has 2 annular sealing rings 7 in the embodiment. In this embodiment, the limit cover 8 is detachably connected with the framework of the filtering mechanism 3 in a screw joint or clamping manner. In this embodiment, the bottom of the filter flask 2 is provided with a sewage discharging cavity, a sewage discharging part 9 is arranged in the sewage discharging cavity, and the sewage discharging part 9 is provided with a sewage discharging channel. In this embodiment, the elastic element 5 is a ring spring.

The utility model has the advantages that: the structure of the pre-filter is optimized, and the pre-filter is installed, used and maintained, can prevent water hammer impact and freezing, and prolongs the service life of the pre-filter. When the instantaneous pressure of the front filter system greatly exceeds the normal pressure, the elastic element 5 is compressed and deformed to reduce the impact force; when the frozen volume of water in the front filter expands, the elastic element 5 is compressed and deformed to make room for the expansion amount of the frozen volume, so that the pressure on the filter flask 2 is reduced, and the service life of the filter flask 2 is prolonged.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.

Claims

1. Leading filter with high pressure buffer function, including aircraft nose, the filter flask of taking the passageway of intaking and going out the water passageway and locating the filtering mechanism in the filter flask, filtering mechanism, filter flask all can dismantle with the aircraft nose and be connected, and the space between filtering mechanism and filter flask forms former water cavity, and the filtering mechanism inner space forms the chamber of purifying waste water, its characterized in that: the bottom end of the filtering mechanism is inwards provided with a buffer device accommodating cavity, the buffer device comprises a cylinder body with a one-way opening, an elastic element and a sealing cover, the elastic element is arranged in the cylinder body, the closed end of the cylinder body faces the inside of the filtering mechanism, two ends of the elastic element are respectively abutted against the bottom wall of the cylinder body and the inner side of the sealing cover, the sealing cover is in sliding sealing with the inner wall of the cylinder body, and a limiting structure is fixedly arranged outside the buffer device accommodating cavity and used for limiting the buffer device in the buffer device accommodating cavity;

2. The pre-filter with high pressure buffer function according to claim 1, wherein: the buffer device accommodating cavity is detachably connected with the framework of the filtering mechanism or integrally formed.

3. The pre-filter with high pressure buffer function according to claim 1, wherein: the inner wall of the cylinder body is smooth, the sealing cover is provided with at least one annular sealing ring, and sliding sealing is achieved between the sealing cover and the cylinder body through interference fit of the annular sealing ring.

4. The pre-filter with high pressure buffer function according to claim 1, wherein: the limiting structure is a limiting cover, and the limiting cover is detachably connected with the framework of the filtering mechanism in a screwing or clamping manner.

5. The pre-filter with high pressure buffer function according to claim 1, wherein: the bottom of the filter flask is provided with a sewage discharge cavity, a sewage discharge piece is arranged in the sewage discharge cavity, and the sewage discharge piece is provided with a sewage discharge channel.

6. The pre-filter with high pressure buffer function according to claim 1, wherein: the elastic element is an annular spring.