CN215538844U - Differential pressure type automatic backwashing filter - Google Patents
Differential pressure type automatic backwashing filter Download PDFInfo
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- CN215538844U CN215538844U CN202122257168.9U CN202122257168U CN215538844U CN 215538844 U CN215538844 U CN 215538844U CN 202122257168 U CN202122257168 U CN 202122257168U CN 215538844 U CN215538844 U CN 215538844U
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Abstract
The utility model relates to a differential pressure type automatic backwashing filter. The utility model aims to provide a differential pressure type automatic backwashing filter which is good in filtering effect and low in cost. The technical scheme includes that the filter comprises a filter valve body, a two-position three-way pressure difference valve core assembly, a filter element, a filter plug and a plug, wherein a liquid inlet, a liquid outlet and a sewage outlet are formed in the filter valve body, the two-position three-way pressure difference valve core assembly comprises a valve core plug, a seat sleeve, a valve core, a pressure difference spring and a first sealing ring, the valve core is provided with a valve core positioning portion, the pressure difference spring is sleeved on the valve core positioning portion, a first valve core through hole and a second valve core through hole are formed in the valve core, a valve core liquid inlet hole is formed in the first valve core through hole, and a valve core sewage outlet hole is formed in the second valve core through hole. The utility model has the advantages that: the structure is simpler than the electric control type automatic back washing filter, the failure rate is low, and the use cost can be obviously reduced.
Description
Technical Field
The utility model relates to the technical field of backwashing filters, in particular to a differential pressure type automatic backwashing filter.
Background
Along with the popularization and promotion of the fully mechanized mining process, the coal mining efficiency is continuously improved, and the requirements on the machining and manufacturing precision of the hydraulic support and the element are higher and higher. High precision hydraulic components require a reliable backwash filter to ensure media cleaning. At present, two types of backwashing filters exist on the market, one is manually operated, and the other is electrically controlled. The hand plate type backwashing filter has simple structure, low manufacturing cost and early popularization and use, and can also play a great role in filtering a hydraulic system if the maintenance is good. The filter core has the defects that people often operate the filter core, the filter screen is possibly filled with impurities when the filter core is not operated in time, the flow of the filter core is reduced to influence the action of the support, or the blocked filter core is penetrated by high-pressure hydraulic pressure, and the impurities enter a system. The electric control type backwashing filter has a complex structure and high manufacturing cost. The device is mainly used for the electro-hydraulic control bracket and is characterized in that the back-flushing time can be set. The defects are that the cost is high, and the device is not easy to use in fully mechanized coal mining working faces which can not provide power.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a differential pressure type automatic backwashing filter which is good in filtering effect and low in cost.
The utility model relates to a differential pressure type automatic backwashing filter, which adopts the technical scheme that the differential pressure type automatic backwashing filter is characterized by comprising a filter valve body, a two-position three-way differential pressure valve core assembly, a filter element, a filter plug and a plug, wherein the two-position three-way differential pressure valve core assembly is arranged in the filter valve body;
the valve core plug is internally provided with a valve core action port for the action of the valve core, a sealing ring mounting groove corresponding to the first sealing ring is arranged in the valve core action port, and the valve core action port is also provided with a valve core through port.
The two-position three-way differential pressure valve core assembly is fixed in the filter valve body through the valve core plug in a threaded connection mode, and the filter plug is clamped in the filter valve body through a bolt.
And valve core chamfers are arranged at two ends of the valve core.
The valve core positioning part is provided with a sealing ring combination installation groove, and the two-position three-way pressure difference valve core assembly further comprises a sealing ring combination arranged in the sealing ring combination installation groove.
The valve core sewage discharge holes are arranged at equal intervals around the circular arc.
The number of the two-position three-way differential pressure valve core assembly and the number of the sewage outlets are 2.
The differential pressure type automatic backwashing filter has the advantages that: the hydraulic support can be used on a common hydraulic support to avoid the phenomena that the flow and the press-through are influenced by the blockage of a filter element caused by the untimely back flushing of a hand plate type back flushing filter; meanwhile, the device can be used on an electro-hydraulic control support, and the device has a simpler structure and a lower failure rate than an electric control type automatic backwashing filter, and can obviously reduce the use cost.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a cross-sectional view of a differential pressure automatic backwash filter of the present invention;
FIG. 2 is a cross-sectional view of the filter valve body of the present invention;
FIG. 3 is a cross-sectional view of the two-position, three-way, pressure differential spool assembly of the present invention;
FIG. 4 is a cross-sectional view of the valve cartridge of the present invention;
fig. 5 is a cross-sectional view of the plug of the present invention.
Detailed Description
As shown in figures 1-5, the differential pressure type automatic backwashing filter comprises a filter valve body 1, a two-position three-way differential pressure valve core component 2 arranged in the filter valve body 1, a filter element 3, a filter plug 4 and a plug 5, the filter valve body 1 is provided with a liquid inlet 7, a liquid outlet 8 and a sewage outlet 9, the two-position three-way differential pressure valve core component 2 comprises a valve core plug 11, a seat sleeve 12, a valve core 13 arranged in the valve core plug 11 and the seat sleeve 12 in a penetrating way, a differential pressure spring 14 and a first sealing ring 10, the valve core 13 is provided with a valve core positioning part 16, the differential pressure spring 14 is sleeved on the valve core positioning part 16, a first valve core through hole 17 and a second valve core through hole 18 are arranged in the valve core 13, a valve core liquid inlet hole 19 communicated with the liquid inlet 7 is arranged in the first valve core through hole 17, a valve core sewage discharge hole 20 communicated with the valve core second through hole 18 is formed in the valve core second through hole 18; a valve core action port 25 for the action of the valve core 13 is arranged in the valve core plug 11, a sealing ring installation groove 26 corresponding to the first sealing ring 10 is arranged in the valve core action port 25, and a valve core through port 27 is also arranged in the valve core action port 25, so that the structural design can be used on a common hydraulic support to avoid the phenomena that the flow and the press-through phenomenon are influenced by the blockage of a filter core caused by the untimely back flushing of a hand plate type back flushing filter; meanwhile, the device can be used on an electro-hydraulic control support, and the device has a simpler structure and a lower failure rate than an electric control type automatic backwashing filter, and can obviously reduce the use cost.
The working principle of the differential pressure type automatic backwashing filter is as follows: when the pressure difference value between the front and the back of the filter element reaches the design requirement, the valve element 13 overcomes the spring force of the pressure difference spring 14 to move reversely to the inlet liquid, and stops supplying liquid to the filter element, and the high-pressure liquid filtered at the other end enters the filter element through the inside and reversely flushes impurities and dirt attached to the outer net of the filter element, after the impurities are flushed and discharged, the flow of the filter element is increased, the valve element 13 returns to the initial position, and the drain outlet is closed.
The two-position three-way differential pressure valve core assembly 2 is fixed in the filter valve body 1 through the valve core plug 11 in a threaded connection mode, and the filter plug 4 is clamped in the filter valve body 1 through the bolt 6 and is firmly and tightly connected.
And valve core chamfers 22 are arranged at two ends of the valve core 13.
And a sealing ring combination installation groove 23 is formed in the valve core positioning part 16, and the two-position three-way pressure difference valve core assembly 2 further comprises a sealing ring combination 15 arranged in the sealing ring combination installation groove 23, so that the sealing effect is good.
The valve core sewage discharge holes 20 are arranged at equal intervals around the circular arc, so that the working stability of the product is improved.
The number of the two-position three-way differential pressure valve core assembly 2 and the number of the sewage discharge ports 9 are both 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are included in the scope of the present invention.
Claims (6)
1. The utility model provides a differential pressure type automatic back flush filter which characterized in that: comprises a filter valve body (1), a two-position three-way differential pressure valve core component (2), a filter core (3), a filter plug (4) and a plug (5) which are arranged in the filter valve body (1), wherein the filter valve body (1) is provided with a liquid inlet (7), a liquid outlet (8) and a sewage outlet (9), the two-position three-way differential pressure valve core component (2) comprises a valve core plug (11), a seat sleeve (12), a valve core (13), a differential pressure spring (14) and a first sealing ring (10) which are arranged in the valve core plug (11) and the seat sleeve (12) in a penetrating way, the valve core (13) is provided with a valve core positioning part (16), the differential pressure spring (14) is sleeved on the valve core positioning part (16), a valve core first through hole (17) and a valve core second through hole (18) are arranged in the valve core (13), a valve core liquid inlet hole (19) which is communicated with the liquid inlet (7) is arranged in the valve core first through hole (17), a valve core sewage discharge hole (20) communicated with the valve core second through hole (18) is formed in the valve core second through hole (18);
a valve core action opening (25) used for the valve core (13) to act is formed in the valve core plug (11), a sealing ring installation groove (26) corresponding to the first sealing ring (10) is formed in the valve core action opening (25), and a valve core through opening (27) is further formed in the valve core action opening (25).
2. The differential pressure type automatic backwashing filter of claim 1, wherein: the two-position three-way differential pressure valve core assembly (2) is fixed in the filter valve body (1) through the valve core plug (11) in a threaded connection mode, and the filter plug (4) is clamped in the filter valve body (1) through a bolt (6).
3. The differential pressure type automatic backwashing filter of claim 1, wherein: and valve core chamfers (22) are arranged at two ends of the valve core (13).
4. The differential pressure type automatic backwashing filter of claim 1, wherein: and a sealing ring combination installation groove (23) is formed in the valve core positioning part (16), and the two-position three-way differential pressure valve core assembly (2) further comprises a sealing ring combination (15) arranged in the sealing ring combination installation groove (23).
5. The differential pressure type automatic backwashing filter of claim 1, wherein: the valve core sewage discharge holes (20) are arranged at equal intervals around the circular arc.
6. The differential pressure type automatic backwashing filter of claim 1, wherein: the number of the two-position three-way differential pressure valve core assembly (2) and the number of the sewage outlets (9) are 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122257168.9U CN215538844U (en) | 2021-09-17 | 2021-09-17 | Differential pressure type automatic backwashing filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122257168.9U CN215538844U (en) | 2021-09-17 | 2021-09-17 | Differential pressure type automatic backwashing filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215538844U true CN215538844U (en) | 2022-01-18 |
Family
ID=79851113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122257168.9U Active CN215538844U (en) | 2021-09-17 | 2021-09-17 | Differential pressure type automatic backwashing filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215538844U (en) |
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2021
- 2021-09-17 CN CN202122257168.9U patent/CN215538844U/en active Active
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