CN220047415U - Filter with pressure relief device - Google Patents

Abstract

The utility model discloses a filter with a pressure relief device, which comprises a barrel, wherein the inside of the barrel is of a hollow structure, a filter element is arranged in the barrel, an upper cover is arranged above the barrel, the pressure relief device is arranged at the position, close to the upper cover, of the barrel, the filter comprises a sleeve, a piston rod, a baffle plate and a spring, the sleeve is communicated with the inner cavity of the barrel, the piston rod is arranged in the sleeve, the baffle plate is arranged at one end of the piston rod and is positioned in the sleeve, one end of the spring is abutted against the baffle plate, the other end of the spring is abutted against the side wall of the sleeve, a pressure relief hole is formed in the bottom wall of the sleeve, when the pressure in the barrel is increased, the baffle plate is pressed by air pressure, the spring is gradually compressed, the baffle plate moves backwards until the pressure reaches a certain value, the pressure relief hole is opened, so that the air pressure enters into a purification assembly from the pressure relief hole, is discharged outside after the purification assembly, the pressure relief device achieves the purpose of pressure relief, and the service life of the filter is ensured.

Description

Filter with pressure relief device

Technical Field

The utility model relates to the technical field of filters, in particular to a filter with a pressure relief device.

Background

The cartridge filter is also called a precision filter, is generally arranged in front of the pressure container to remove fine particles with turbidity of more than 1 ℃ so as to meet the requirement of subsequent procedures on water inflow; sometimes also at the end of the overall water treatment system, preventing fine particles (e.g., broken resin) from entering the product water.

The working principle of the cartridge filter is that the mechanical filtration is carried out by utilizing the pores of the filter core, the medium passes through the cartridge filter core, the impurities are adhered to the filter core, and the filter core is blocked along with the increase of the service time, so that the internal pressure of the filter is increased, the existing cartridge filter does not have the pressure release function, and the inside of the filter is easily damaged due to overlarge pressure.

Disclosure of Invention

The present utility model is directed to solving at least one of the problems of the prior art. Therefore, the utility model aims to provide the filter with the pressure relief device, and the pressure inside the filter is effectively relieved through the pressure relief device, so that the filter is prevented from being damaged due to overlarge pressure.

In order to achieve the above purpose, the utility model provides a filter with a pressure relief device, which comprises a cylinder body, wherein the inside of the cylinder body is of a hollow structure and is internally provided with a filter element, an upper cover is arranged above the cylinder body, the position, close to the upper cover, of the cylinder body is provided with the pressure relief device, the pressure relief device comprises a sleeve, a piston rod, a baffle and a spring, the sleeve is communicated with an inner cavity of the cylinder body, the piston rod is arranged in the sleeve, the baffle is arranged at one end of the piston rod and is positioned in the sleeve, one end of the spring is abutted against the baffle, the other end of the spring is abutted against the side wall of the sleeve, a pressure relief hole is formed in the bottom wall of the sleeve, and the pressure relief hole is positioned between the baffle and the side wall of the sleeve.

Preferably, the pressure release hole is connected with a purification assembly, the purification assembly comprises an air cylinder and a filter cylinder, the filter cylinder is arranged in the air cylinder, and the air cylinder is communicated with the sleeve through the pressure release hole.

Preferably, the bottom of the inflator is provided with an air outlet pipe which is communicated with the inner cavity of the inflator.

Preferably, a pressure gauge is further arranged on the sleeve.

Preferably, the outer edge of the top of the cylinder body is provided with an annular clamping ring, the annular clamping ring is provided with a plurality of connecting pieces, a connecting screw rod is movably connected in a notch of each connecting piece through a movable connecting piece, and one end of each connecting screw rod is provided with a hand-screwed nut.

Preferably, the upper cover is provided with a mounting groove at a position corresponding to the position of the connecting screw, the connecting screw is matched with the mounting groove, and the width of the mounting groove is larger than the diameter of the connecting screw.

Preferably, a flange is arranged at the bottom of the cylinder body, and a plurality of connecting holes are formed in the flange.

Preferably, the bottom of the cylinder body is provided with a base, the base is also provided with connecting holes corresponding to the connecting holes of the flange, and the cylinder body is fixed on the base through the matching of the connecting holes and the fastening pieces.

The utility model has the beneficial effects that:

the utility model is provided with a pressure relief device, which comprises a sleeve, a piston rod, a baffle and a spring, wherein the sleeve is communicated with the inner cavity of a cylinder, the piston rod is arranged in the sleeve, the baffle is arranged at one end of the piston rod and positioned in the sleeve, one end of the spring is abutted against the baffle, the other end of the spring is abutted against the side wall of the sleeve, the bottom wall of the sleeve is provided with a pressure relief hole, when the pressure in the cylinder is increased, the air pressure presses the baffle, the spring is gradually compressed, the baffle moves backwards, and the pressure relief hole is opened until the pressure reaches a certain value, so that the air pressure can enter a purification assembly from the pressure relief hole and is discharged outside after being purified by the purification assembly, the purpose of pressure relief is achieved by the pressure relief device, and the service life of a filter is ensured.

The features and advantages of the present utility model will be described in detail by way of example with reference to the accompanying drawings.

Drawings

FIG. 1 is an overall perspective view of the present utility model;

FIG. 2 is an enlarged view of the utility model at A in FIG. 1;

fig. 3 is a schematic structural diagram of a pressure relief device according to the present utility model.

In the figure: 1. the device comprises a barrel body, an upper cover, a sleeve, a piston rod, a baffle, a spring, a pressure relief hole, an air cylinder, a filter cylinder, a pressure gauge, an annular clamping ring, a connecting piece, a connecting screw rod, a manual screw cap, a mounting groove, a flange, a base and an air outlet pipe.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus consistent with aspects of the utility model as detailed in the accompanying claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. Unless defined otherwise, technical or scientific terms used herein should be understood as commonly understood by one of ordinary skill in the art to which this utility model belongs. The use of the terms "a" or "an" and the like in the description and in the claims do not denote a limitation of quantity, but rather denote the presence of at least one. The term "plurality" includes two, corresponding to at least two. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

As shown in fig. 1-3, a filter with pressure relief device, including barrel 1, the inside hollow structure that is of barrel 1 just inside is provided with filter core (not annotating out), barrel 1 top is provided with upper cover 2, barrel 1 is close to upper cover 2 position department and is provided with pressure relief device, pressure relief device includes sleeve 3, piston rod 4, baffle 5 and spring 6, sleeve 3 and barrel 1 inner chamber switch-on, piston rod 4 installs in sleeve 3, baffle 5 installs in the one end of piston rod 4 and is located sleeve 3, spring 6 one end is contradicted on baffle 5, and the other end is contradicted on sleeve 3 lateral wall, be provided with relief hole 7 on the sleeve 3 diapire, relief hole 7 is located between baffle 5 and sleeve 3 lateral wall, still be provided with manometer 10 on the sleeve 3, baffle 5 plays the effect of jam gas passage, and when receiving the pressure, baffle 5 can take place the removal to the atress together piston rod 4 that is in this moment can outwards end remove, spring 6 is compressed, until opening hole 7 and accomplish automatic, when barrel 1 and outside pressure and outside under the effect of spring 4 and pressure balance baffle 5.

In this embodiment, be connected with the purification module on the pressure release hole 7, the purification module includes gas cylinder 8 and filter cartridge 9, filter cartridge 9 installs in gas cylinder 8, gas cylinder 8 is put through with sleeve 3 through pressure release hole 7, and filter cartridge 9 can be by just imitate one or more in filter screen, HEPA filter screen, the active carbon substrate filter screen and constitute, and it can purify the inside gas that releases of barrel 1 for the air that discharges to the external world is cleaner.

In this embodiment, an air outlet pipe 18 is disposed at the top of the air cylinder 8, the air outlet pipe 18 is connected to the inner cavity of the air cylinder 8, and the purified air can be discharged through the air outlet pipe 18.

In this embodiment, an annular collar 11 is disposed at the outer edge of the top of the barrel 1, the annular collar 11 may be fixed to the barrel 1 by a fastener (bolt assembly), a plurality of connecting pieces 12 are disposed on the annular collar 11, the connecting pieces 12 may be fixed to the annular collar 11 by a welding process, a connecting screw 13 is movably connected to a notch of the connecting piece 12 by a movable connecting piece 12, the movable connecting piece 12 is a connecting shaft, and a hand-screwed nut 14 is disposed at one end of the connecting screw 13; the upper cover 2 is provided with a mounting groove 15 at a position corresponding to the position of the connecting screw 13, the connecting screw 13 is matched with the mounting groove 15, the width of the mounting groove 15 is larger than the diameter of the connecting screw 13, the connecting screw 13 can rotate around the movable connecting piece 12 and can be mounted in the mounting groove 15, and the upper cover 2 is fixedly matched with the cylinder 1 under the action of the hand screw cap 14.

In this embodiment, a flange 16 is disposed at the bottom of the cylinder 1, and a plurality of connection holes are disposed on the flange 16.

In this embodiment, a base 17 is provided at the bottom of the cylinder 1, and a connecting hole is also provided on the base 17 corresponding to the position of the connecting hole of the flange 16, and the cylinder 1 is fixed on the base 17 through the cooperation of the connecting hole and the fastener.

Working principle: when the internal air pressure of the cylinder body 1 rises, air enters the sleeve 3 and can squeeze the baffle plate 5, the baffle plate 5 can drive the piston rod 4 to move outwards, the spring 6 is compressed until the pressure release hole 7 is opened, the air enters the air cylinder 8 to complete pressure release, the spring 6 is reset after the pressure release is completed, and the piston rod 4 and the baffle plate 5 are also reset simultaneously; the gas is purified in the inflator 8, and the treated gas is discharged to the outside through the gas outlet pipe 18. Of course, the staff can also manually pull the piston rod 4 to release the pressure.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a filter with pressure relief device, includes the barrel, the inside hollow structure that is of barrel and inside is provided with the filter core, the barrel top is provided with the upper cover, its characterized in that, barrel is close to upper cover position department and is provided with pressure relief device, pressure relief device includes sleeve, piston rod, baffle and spring, sleeve and barrel inner chamber switch-on, the piston rod is installed in the sleeve, the baffle is installed in one end of piston rod and is located the sleeve, spring one end is contradicted on the baffle, the other end is contradicted on the sleeve lateral wall, be provided with the pressure relief hole on the sleeve diapire, the pressure relief hole is located between baffle and the sleeve lateral wall; the pressure relief hole is connected with a purification assembly, the purification assembly comprises an air cylinder and a filter cylinder, the filter cylinder is arranged in the air cylinder, and the air cylinder is communicated with the sleeve through the pressure relief hole.

2. The filter with pressure relief device according to claim 1, wherein an air outlet pipe is provided at the bottom of the air cylinder, and the air outlet pipe is communicated with the inner cavity of the air cylinder.

3. A filter with pressure relief device as claimed in claim 2, wherein said sleeve is further provided with a pressure gauge.

4. A filter with pressure relief device according to claim 3, wherein the outer edge of the top of the cylinder is provided with an annular collar, the annular collar is provided with a plurality of connectors, the slots of the connectors are movably connected with a connecting screw through a movable connector, and one end of the connecting screw is provided with a hand-screwed nut.

5. The filter with pressure relief device according to claim 4, wherein said upper cover is provided with a mounting groove at a position corresponding to a position of a connecting screw, said connecting screw is used in cooperation with the mounting groove, and a width of said mounting groove is larger than a diameter of the connecting screw.

6. The filter with pressure relief device according to claim 5, wherein said bottom of said canister is provided with a flange having a plurality of attachment holes.

7. The filter with pressure relief device according to claim 6, wherein a base is provided at the bottom of the cylinder, and the base is also provided with a connecting hole corresponding to the connecting hole of the flange, and the cylinder is fixed to the base through the cooperation of the connecting hole and the fastener.