阅读说明：本技术 一种具有截止、止回、过滤功能的滤止阀 (Filtering valve with stopping, non-return and filtering functions ) 是由 卓建发 于 2019-10-16 设计创作，主要内容包括：本发明公开了一种具有截止、止回、过滤功能的滤止阀,包括阀体和阀杆,所述阀体下端设有轮盖,所述轮盖内侧上端设有过滤网,所述过滤网内侧设有弹簧,所述弹簧内侧设有阀芯,所述阀芯下端设有阀芯连接部,所述阀芯连接部下端设有密封盖,所述密封盖上端设有阀杆,所述阀杆一端固定设有挡块,通过螺栓将阀杆和挡块固定,后通过密封盖对阀芯连接部内部密封,向下阀腔内部装入弹簧和过滤网,在通过旋紧轮盖完成密封,水流通过阀门进口进入阀体内部的上阀腔,后顶开阀芯进入阀体内部的下阀腔,通过下阀腔内部的过滤网进行过滤后通过阀门出口排出,阀芯被水流顶开时在阀杆表面上下滑动,挡块能够防止阀芯过度位移从而导致阀芯与阀杆脱落。(The invention discloses a filtering valve with stopping, non-return and filtering functions, which comprises a valve body and a valve rod, wherein a wheel cover is arranged at the lower end of the valve body, a filtering net is arranged at the upper end of the inner side of the wheel cover, a spring is arranged at the inner side of the filtering net, a valve core is arranged at the inner side of the spring, a valve core connecting part is arranged at the lower end of the valve core, a sealing cover is arranged at the lower end of the valve core connecting part, the valve rod is arranged at the upper end of the sealing cover, a stop block is fixedly arranged at one end of the valve rod, the valve rod and the stop block are fixed through a bolt, then the inner part of the valve core connecting part is sealed through the sealing cover, the spring and the filtering net are arranged in a lower valve cavity, the sealing is completed through screwing the wheel cover, water flow enters an upper valve cavity in the valve body through, the stop block can prevent the valve core from excessively displacing so as to cause the valve core and the valve rod to fall off.)

1. A filtering valve with stopping, non-return and filtering functions comprises a valve body (4) and a valve rod (2), it is characterized in that the lower end of the valve body (4) is provided with a wheel cover (8), the upper end of the inner side of the wheel cover (8) is provided with a filter screen (6), a spring (9) is arranged on the inner side of the filter screen (6), a valve core (5) is arranged on the inner side of the spring (9), the lower end of the valve core (5) is provided with a valve core connecting part (13), the lower end of the valve core connecting part (13) is provided with a sealing cover (12), a valve rod (2) is arranged at the upper end of the sealing cover (12), a stop block (11) is fixedly arranged at one end of the valve rod (2), a hand wheel (1) is fixedly arranged at the other end of the valve rod (2), a filler (3) is arranged at the upper end of the inner side of the valve body (4), the valve is characterized in that a valve inlet (7) is formed in the surface of one side of the valve body (4), and a valve outlet (10) is formed in the surface of the other side of the valve body (4).

2. The filtering valve with the functions of stopping, stopping and filtering as claimed in claim 1, wherein the bottom surface of the valve body (4) is provided with a first external thread, the wheel cover (8) is internally provided with a first internal thread matched with the first external thread, and the wheel cover (8) is in threaded connection with the wheel cover (8).

3. The filtering valve with the functions of stopping, stopping and filtering as claimed in claim 1, wherein the surface of the wheel cover (8) is provided with a sealing ring installation groove, and a sealing ring is arranged in the sealing ring installation groove and is a rubber sealing ring.

4. The filtering valve with the functions of stopping, stopping and filtering as claimed in claim 1, wherein the valve core (5) is fixedly connected with the valve core connecting part (13), the inside of the valve core connecting part (13) is hollow, the surface of the valve core connecting part (13) is provided with a second internal thread, the inside of the sealing cover (12) is provided with a second internal thread matched with the second internal thread, and the valve core connecting part (13) is in threaded connection with the sealing cover (12).

5. The filtering valve with the functions of stopping, stopping and filtering as claimed in claim 1, wherein the valve rod (2) is slidably connected with the valve core (5), the valve rod (2) and the stop block (11) are both internally provided with a thread groove, and the valve rod (2) and the stop block (11) are fixed with the thread groove through a bolt.

6. The filter valve with the functions of stopping, stopping and filtering as claimed in claim 1, wherein the valve body (4) is internally divided into an upper valve cavity and a lower valve cavity, the filter screen (6) is arranged in a cylindrical shape, the filter screen (6) is matched with the inner side of the lower valve cavity, and the diameter of the valve core (5) is larger than the diameter of the intersection of the upper valve cavity and the lower valve cavity.

7. The filtering valve with the functions of stopping, stopping and filtering as claimed in claim 1, wherein the surface of the valve rod (2) is provided with a third external thread, the interior of the valve body (4) is provided with a corresponding third internal thread, and the valve rod (2) is connected with the valve body (4) through threads.

Technical Field

The invention relates to a filter valve, in particular to a filter valve with the functions of stopping, stopping and filtering.

Background

The main functions of the filter check valve are to prevent the media from flowing backwards, prevent the pump and the drive motor from reversing, and prevent the container media from being discharged. Check valves may also be used to provide make-up lines to auxiliary systems where the pressure may rise above the system pressure. Check valves can be largely classified into swing check valves (rotating about the center of gravity) and lift check valves (moving along an axis), and the function of these types of valves is to allow the medium to flow in only one direction, but to prevent the medium from flowing in the other direction. Typically such valves are self-actuating, with the flap opening under the pressure of a fluid flowing in one direction; when the fluid flows in the opposite direction, the valve flap is combined by the fluid pressure and the self-weight of the valve flap to act on the valve seat, thereby cutting off the flow.

The traditional check valve and the stop valve can only play own functions, and when a water system needs to be opened and closed, the water flow is adjusted and the water flows in a single direction, the stop valve and the check valve must be installed at the same time. But the cost of installing the stop valve and the check valve is high, the space required by installing the two valves is large, the traditional check valve is large in size and large in flow resistance, the water hammer pressure is high when the valve is closed, the installation and the maintenance are difficult, and the service life is short. And the existing stop valve and the check valve are not internally provided with filter screens, so that water flow cannot be filtered.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a filtering valve with the functions of stopping, stopping and filtering, thereby solving the problems.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a filtering valve with stop, non return, filtering capability, includes valve body and valve rod, the valve body lower extreme is equipped with the wheel cap, wheel cap inboard upper end is equipped with the filter screen, the filter screen inboard is equipped with the spring, the spring inboard is equipped with the case, the case lower extreme is equipped with case connecting portion, case connecting portion lower extreme is equipped with sealed lid, sealed upper end is equipped with the valve rod, the fixed dog that is equipped with of valve rod one end, the fixed hand wheel that is equipped with of the valve rod other end, valve body inboard upper end is equipped with the filler, valve body side surface is equipped with the valve import, valve body opposite side surface is.

As a preferred technical scheme of the invention, the bottom surface of the valve body is provided with a first external thread, the wheel cover is internally provided with a first internal thread matched with the wheel cover, and the wheel cover is in threaded connection with the wheel cover.

As a preferred technical scheme of the invention, the surface of the wheel cover is provided with a sealing ring mounting groove, a sealing ring is arranged in the sealing ring mounting groove, and the sealing ring is a rubber sealing ring.

As a preferred technical scheme of the invention, the valve core is fixedly connected with the valve core connecting part, the interior of the valve core connecting part is hollow, the surface of the valve core connecting part is provided with a second internal thread, the interior of the sealing cover is provided with a second internal thread matched with the second internal thread, and the valve core connecting part is in threaded connection with the sealing cover.

As a preferable technical scheme of the invention, the valve rod is connected with the valve core in a sliding mode, the valve rod and the check block are both internally provided with thread grooves, and the valve rod and the check block are fixedly connected with the thread grooves inside through bolts in a threaded mode.

As a preferred technical scheme of the invention, the interior of the valve body is divided into an upper valve cavity and a lower valve cavity, the filter screen is arranged in a cylindrical shape, the filter screen is matched with the inner side of the lower valve cavity, and the diameter of the valve core is larger than the diameter of the intersection of the upper valve cavity and the lower valve cavity.

As a preferable technical scheme of the invention, the surface of the valve rod is provided with a third external thread, the interior of the valve body is provided with a corresponding third internal thread, and the valve rod is connected with the valve body through the threads.

Compared with the prior art, the invention has the beneficial effects that: the filtering valve with the functions of stopping, non-stopping and filtering is characterized in that a valve rod and a check block are fixed through a bolt, then the inner part of a valve core connecting part is sealed through a sealing cover, a spring and a filter screen are arranged in a lower valve cavity, sealing is completed through screwing a wheel cover, water flow enters an upper valve cavity in a valve body through a valve inlet, a valve core is ejected into a lower valve cavity in the valve body through back jacking, the filter screen in the lower valve cavity is used for filtering and then is discharged through a valve outlet, the valve core slides up and down on the surface of the valve rod when being jacked open by the water flow, the check block can prevent the valve core from excessively displacing to cause the falling of the valve core and the valve rod, when backflow occurs, the valve core rapidly jacks the connecting part of the upper valve cavity and the lower valve cavity under the action of the spring, so that the non-stopping is performed, when, the valve core is propped by the inner stop block to move upwards simultaneously, so that the joint of the upper valve cavity and the lower valve cavity is closed, the completion is stopped, when the filter screen needs to be cleaned, the wheel cover only needs to be screwed down, the filter screen is taken out to be replaced and cleaned, the structure is scientific and reasonable, the use is safe and convenient, and great help is provided for people.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a filtering valve with stopping, stopping and filtering functions according to the present invention;

FIG. 2 is a partial structural view of a filtering valve with stopping, stopping and filtering functions according to the present invention;

FIG. 3 is a schematic view of a filter screen of the filtering valve with stopping, non-returning and filtering functions according to the present invention;

in the figure: 1. a hand wheel; 2. a valve stem; 3. a filler; 4. a valve body; 5. a valve core; 6. a filter screen; 7. a valve inlet; 8. a wheel cover; 9. a spring; 10. a valve outlet; 11. a stopper; 12. a sealing cover; 13. a valve core connecting part.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a strain valve with end, the non return, filtering capability, including valve body 4 and valve rod 2, 4 lower extremes of valve body are equipped with wheel cap 8, 8 inboard upper ends of wheel cap are equipped with filter screen 6, 6 inboard springs 9 that are equipped with of filter screen, 9 inboard springs 5 are equipped with case 5, 5 lower extremes of case are equipped with case connecting portion 13, 13 lower extremes of case connecting portion are equipped with sealed lid 12, sealed lid 12 upper end is equipped with valve rod 2, 2 fixed dog 11 that are equipped with of one end of valve rod, 2 other ends of valve rod are fixed and are equipped with hand wheel 1, 4 inboard upper ends of valve body are equipped with filler 3, 4 a side surfaces of valve body are equipped with.

The bottom surface of the valve body 4 is provided with a first external thread, the wheel cover 8 is internally provided with a first internal thread matched with the first external thread, and the wheel cover 8 is connected with the wheel cover 8 through the thread.

The 8 surfaces of wheel cap are equipped with the sealing washer mounting groove, and the inside sealing washer that is equipped with of sealing washer mounting groove, and the sealing washer is rubber seal.

The valve core 5 is fixedly connected with the valve core connecting part 13, the valve core connecting part 13 is arranged in a hollow mode, second internal threads are arranged on the surface of the valve core connecting part 13, second internal threads matched with the sealing cover 12 are arranged in the sealing cover 12, and the valve core connecting part 13 is in threaded connection with the sealing cover 12.

Valve rod 2 and 5 sliding connection of case, the inside thread groove that all is equipped with of valve rod 2 and dog 11, valve rod 2 and dog 11 pass through the bolt fixed with inside thread groove threaded connection.

The interior of the valve body 4 is divided into an upper valve cavity and a lower valve cavity, the filter screen 6 is arranged in a cylindrical shape, the filter screen 6 is matched with the inner side of the lower valve cavity, and the diameter of the valve core 5 is larger than the diameter of the intersection of the upper valve cavity and the lower valve cavity.

The surface of the valve rod 2 is provided with a third external thread, the inside of the valve body 4 is provided with a third internal thread corresponding to the third external thread, and the valve rod 2 is connected with the valve body 4 through the threads.

The specific principle is as follows: when the check valve is used, the valve rod 2 and the check block 11 are fixed through bolts, then the valve core connecting part 13 is sealed through the sealing cover 12, the spring 9 and the filter screen 6 are arranged in the lower valve cavity, the sealing is completed through screwing the wheel cover 8, water flow enters the upper valve cavity in the valve body 4 through the valve inlet 7, the valve core 5 is ejected into the lower valve cavity in the valve body 4, the filtered water is discharged through the valve outlet 10 after being filtered through the filter screen 6 in the lower valve cavity, the valve core 5 slides up and down on the surface of the valve rod 2 when being ejected by the water flow, the check block 11 can prevent the valve core 5 from excessively displacing to cause the falling of the valve core 5 and the valve rod 2, when backflow occurs, the valve core 5 rapidly abuts against the connecting part of the upper valve cavity and the lower valve cavity under the action of the spring 9 to perform check, when the water flow needs to be stopped, the hand wheel 1 is rotated, at this moment, the valve rod 2 moves upwards, the inner stop block 11 abuts against the valve core 5 and moves upwards at the same time, so that the joint of the upper valve cavity and the lower valve cavity is closed, the completion is stopped, and when the filter screen 6 needs to be cleaned, the wheel cover 8 only needs to be screwed down, and the filter screen 6 can be replaced and cleaned after being taken out.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.