CN212881373U - Bypass filter - Google Patents

Abstract

The utility model discloses a bypass filter, it includes casing and lower casing, goes up casing and casing interconnect down, goes up the first pore that is equipped with in the casing and link up, is equipped with the bypass subassembly in the first pore to separate first pore for inflow section and outflow section, go up and still be equipped with the second pore in the casing, the one end in second pore communicates the outflow section in first pore, and the other end communicates first interface, and the inflow section in first pore also communicates first interface. When the filter element is blocked by the filter in the lower shell of the bypass filter, the pressure on one side of the inlet of the first pore channel can be increased, so that the bypass assembly is opened, fluid is directly shunted from the first pore channel, the pressure inside the lower shell is reduced, the filter element is prevented from being damaged by pressure, the bypass assembly is directly arranged in the upper shell of the filter, the bypass assembly is more convenient to assemble, the filter directly has the function of a bypass valve, the bypass valve does not need to be additionally arranged, and the manufacturing cost of the filter is reduced.

Description

Bypass filter

Technical Field

The utility model relates to a pipe fitting technical field, concretely relates to bypass filter.

Background

In the pipeline system of fluid such as hydraulic oil, can be equipped with the filter that is arranged in filtering fluid system pollutant, and when the pollutant of filtering made the filter cartridge block up, the filter upstream and downstream can produce pressure differential, need open the pipeline in addition at this moment and lead to the filter upstream and downstream, prevent that the filter cartridge from being broken by the pressure.

At present, a bypass valve is generally arranged in a filter, and when a filter element is blocked and the pressure in the filter reaches a set value, the bypass valve is opened to dredge the fluid in the filter and reduce the pressure.

However, the bypass valve in the conventional filter is a separate component, such as a filter disclosed in chinese patent publication No. CN203248457U and an improved oil filter disclosed in chinese patent publication No. CN202360515U, which are assembled together after the filter and the bypass valve are separately designed, and both the filter housing and the bypass valve need to be separately designed, which increases the cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bypass filter, solve among the prior art filter and need install the bypass valve alone, the assembly is loaded down with trivial details, technical problem that the cost of manufacture is high.

In order to solve the technical problem, the utility model discloses a following technical scheme:

designing a bypass filter, which comprises an upper shell and a lower shell, wherein the inside of the lower shell is used for installing a filter element, and a first connector and a second connector which are used for being connected with each other are respectively arranged on the upper shell and the lower shell; the upper shell is internally provided with a first pore passage which penetrates through the upper shell, a bypass assembly is arranged in the first pore passage so as to divide the first pore passage into an inflow section and an outflow section, the upper shell is also internally provided with a second pore passage, one end of the second pore passage is communicated with the outflow section of the first pore passage, the other end of the second pore passage is communicated with the first connector, the inflow section of the first pore passage is also communicated with the first connector, and when the pressure in the inflow section of the first pore passage reaches a set value, the bypass assembly is opened.

Preferably, a radial mounting plate is arranged in the first pore passage, and a plurality of leakage holes and mounting holes are formed in the mounting plate; the bypass assembly comprises a screw inserted in the mounting hole, a sealing sheet, a base plate and a spring are sequentially arranged on the screw in a penetrating mode, and a nut for pressing the spring is screwed at the end of the screw, so that the sealing sheet seals the leakage hole in the mounting plate.

Preferably, the first duct is a transverse hole, a column portion is provided in the upper case, and the second duct is a vertical hole provided in the column portion.

Preferably, an opening is provided on the hole wall of the first hole passage at a position adjacent to the first port, so that the inflow section of the first hole passage is communicated to the first port through the opening.

Preferably, the first interface and the second interface are connected by screw threads.

The utility model has the advantages of:

1. the utility model provides a bypass filter includes interconnect's last casing and casing down, and the internal portion of inferior valve is used for the filter core of packing into, goes up and is equipped with first pore and second passageway in the casing, is equipped with the bypass subassembly in first pore, and the filter core in the casing is blockked up by the filter under when, and the pressure of first pore entry one side can increase for the bypass subassembly is opened, and the fluid is direct to be shunted from first pore, to the internal portion step-down of inferior valve, prevents that the filter core pressurized from damaging.

2. Through directly setting up the bypass subassembly in the upper casing of this filter, the bypass subassembly is more convenient the equipment, and makes this filter directly have the function of bypass valve, need not to install the bypass valve again, reduces the cost of manufacture of filter.

Drawings

Fig. 1 is a schematic perspective view of a bypass filter according to an embodiment of the present invention.

Fig. 2 is an exploded view of an embodiment of the bypass filter of the present invention.

Fig. 3 is a side view of an embodiment of the bypass filter of the present invention.

Fig. 4 is a sectional view taken along line a-a in fig. 3.

Fig. 5 is an enlarged view of a portion a in fig. 4.

In the drawings, each reference numeral means: the upper shell 1, the first port 11, the first duct 12, the inlet 121, the outlet 122, the mounting plate 123, the leak hole 1232, the mounting hole 1231, the inflow section 124, the outflow section 125, the opening 126, the lower shell 2, the second port 21, the screw 31, the sealing plate 32, the backing plate 33, the spring 34, and the nut 35.

Detailed Description

The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. References to "first," "second," etc. in this application are intended to distinguish between similar items and not necessarily to describe a particular order or sequence.

Example 1:

a bypass filter, please refer to fig. 1 to 5.

As shown in fig. 1 and 2, the embodiment of the present invention provides a bypass filter, which includes an upper casing 1 and a lower casing 2, wherein the cavity inside the lower casing 2 is used for packing a filter element, the upper casing 1 and the lower casing 2 are respectively provided with a first interface 11 and a second interface 21 for interconnection, the first interface 11 is provided with an internal screw hole, and the second interface is provided with an external screw thread, so that the first interface 11 and the second interface 21 are connected by screw threads to communicate the upper casing 1 and the lower casing 2.

Referring to fig. 3 and 4, a first port 11 is formed in the lower portion of the upper housing 1, a duct is formed in the upper portion of the upper housing 1, and includes a first duct 12 penetrating the upper housing 1, the first duct 12 is a transverse hole,

the first duct 12 has an inlet 121 and an outlet 122 at opposite ends thereof, respectively, on the outer wall of the upper casing 1, and the fluid enters from the inlet 121 and exits from the outlet 122. Internal threads may be provided in the inlet 121 and outlet 122 to facilitate connection to a pipe.

A bypass assembly is provided in the first bore 12. Referring to fig. 2 and 5, a radial mounting plate 123 is disposed in the first duct 12, the mounting plate 123 is integrally formed with the wall surface of the first duct 12, a plurality of leak holes 1232 and mounting holes 1231 are disposed on the mounting plate 123, the mounting holes 1231 are located at the center of the mounting plate 123, and the leak holes 1232 are distributed around the mounting holes 1231. The bypass assembly in this embodiment includes a screw 31 inserted into the mounting hole 1231, a sealing piece 32, a backing plate 33 and a spring 34 are sequentially inserted into the screw 31, and a nut 35 for pressing the spring 34 is screwed on an end of the screw 31, so that the sealing piece 32 seals each leak hole on the mounting plate 123, where the backing plate 33 is a hard plate and supports the sealing piece 32. The sealing sheet 32 may be made of a material having sealing properties such as a rubber sheet.

Further, the bypass assembly divides the first duct 12 into an inflow section 124 and an outflow section 125, the upper housing 1 is further provided with a second duct 13, the upper housing 1 is provided with a column portion 14, the second duct 13 is a vertical hole provided in the column portion 14, a top end of the second duct 13 is communicated with the outflow section 125 of the first duct 12, a lower end of the second duct 13 is communicated with the first connector 11, the inflow section 124 of the first duct 12 is also communicated with the first connector 11, and an opening 126 is provided on a wall of the first duct 12 adjacent to the first connector 11, so that the inflow section 124 of the first duct 12 is communicated with the first connector 11 through the opening 126. Thus, when the fluid flows into the upper housing 1 through the inlet 121, the fluid can further flow into the lower housing 2 through the first port 11 for filtration, and the filtered fluid flows into the outflow section 125 through the lower end of the second duct 13 and finally flows out of the outlet 122.

When the filter element in the lower housing 2 is blocked by the filter, so that the pressure in the inflow section 124 of the first cell 12 reaches a set value, the gasket 33 and the sealing sheet 32 push the spring to the left, and the bypass assembly is opened, wherein the set value is set according to the compression degree of the spring 34, and after the bypass assembly is opened, the fluid can directly flow to the outflow section 125 of the first cell 12 through the leakage hole 1232 of the mounting plate 123, so that the pressure in the inflow section 134 of the first cell 12 is reduced, and the filter element in the lower housing 2 is prevented from being damaged under pressure.

The present invention has been described in detail with reference to the accompanying drawings and embodiments, but those skilled in the art will understand that various specific parameters in the above embodiments can be changed without departing from the spirit of the present invention to form a plurality of specific embodiments, which are the common variation ranges of the present invention and will not be described in detail herein.

Claims (5)

1. A bypass filter is characterized by comprising an upper shell and a lower shell, wherein the inside of the lower shell is used for installing a filter element, and a first connector and a second connector which are used for being connected with each other are respectively arranged on the upper shell and the lower shell; the upper shell is internally provided with a first pore passage which penetrates through the upper shell, a bypass assembly is arranged in the first pore passage so as to divide the first pore passage into an inflow section and an outflow section, the upper shell is also internally provided with a second pore passage, one end of the second pore passage is communicated with the outflow section of the first pore passage, the other end of the second pore passage is communicated with the first connector, the inflow section of the first pore passage is also communicated with the first connector, and when the pressure in the inflow section of the first pore passage reaches a set value, the bypass assembly is opened.

2. The bypass filter according to claim 1, wherein a radial mounting plate is provided in the first port, the mounting plate having a plurality of weep holes and mounting holes; the bypass assembly comprises a screw inserted in the mounting hole, a sealing sheet, a base plate and a spring are sequentially arranged on the screw in a penetrating mode, and a nut for pressing the spring is screwed at the end of the screw, so that the sealing sheet seals the leakage hole in the mounting plate.

3. The bypass filter according to claim 1, wherein the first port is a transverse port, a post is provided in the upper housing, and the second port is a post provided in the post.

4. The bypass filter of claim 1, wherein an opening is provided in the bore wall of the first bore adjacent the first port such that the inflow section of the first bore communicates with the first port through the opening.

5. The bypass filter of claim 1, wherein the first and second ports are threaded.

Images