Check valve with filtering function

Abstract

The utility model relates to a check valve with a filtering function, which belongs to the technical field of check valves with filtering functions and comprises a valve body, a filtering bin is fixed on the left side of the valve body, a liquid inlet pipe is fixed on the left side of the filtering bin, and a filtering mechanism is arranged in the filtering bin. The filtering mechanism comprises a rotating block rotationally connected to the inner wall of the left side of the filtering bin, a circular plate is slidably connected to the peripheral wall of the rotating block, a rotating rod is fixed to the right side of the circular plate, an insertion hole is formed in the left side of the circular plate, a filter screen cylinder is inserted into the insertion hole, and a limiting ring is fixed to the left side of the filter screen cylinder; a sealing plate is fixed to the left side of the circular plate, a threaded hole is formed in the left side of the filtering bin, and a sealing block is in threaded connection with the interior of the threaded hole. According to the check valve with the filtering function, the positions of the sealing plate and the filter screen cylinder can be directly exchanged without closing a main valve of a pipeline system, so that the influence of maintenance on the pipeline system is reduced, and the check valve is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves with filtering functions, in particular to a check valve with filtering functions. Background Art

[0002] A check valve is a valve whose opening and closing part is a circular valve disc and which relies on its own weight and medium pressure to produce movement to block the backflow of the medium. It is an automatic valve and is also called a non-return valve, one-way valve, reflux valve or isolation valve. Check valves are often used as bottom valves of pumping devices to prevent the backflow of water. In order to reduce a certain type of impurities, a filter structure is usually set on the check valve.

[0003] For example, a Chinese patent (publication number: CN216479112U) discloses a check valve with a filtering function, including a check valve body, bolts and nuts. A filter net is arranged near one end of the inner wall of the liquid inlet pipe, and a filtering auxiliary mechanism is arranged at one end of the liquid inlet pipe. The water flow passing through the valve body can be filtered, and the pipe body can be opened by the filtering auxiliary mechanism to clean the filtered impurities.

[0004] However, the above search patent still has some shortcomings. Generally, a main valve and multiple branch valves are provided in the pipeline system. When cleaning the filter, it is necessary to close the main valve before proceeding. As a result, when cleaning the check valve of a branch pipeline, it will affect the normal operation of other pipelines or even the entire pipeline system, which is extremely inconvenient to clean. Therefore, a check valve with a filtering function is proposed to solve the above problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a check valve with a filtering function, which has the advantages of being easy to clean and not affecting the operation of the same pipeline system, and solves the problem that the device disclosed in the above-mentioned search patent needs to stop the pipeline system when cleaning the filter.

[0006] To achieve the above object, the utility model provides the following technical solution: a check valve with filtering function, comprising a valve body, a filtering chamber is fixed on the left side of the valve body, connecting holes are opened on the left and right sides of the filtering chamber, a liquid inlet pipe is fixed on the left side of the filtering chamber, and a filtering mechanism is arranged in the filtering chamber;

[0007] The filtering mechanism includes a rotating block rotatably connected to the left inner wall of the filter bin, a circular plate is slidably connected to the outer peripheral wall of the rotating block, a rotating rod is fixed to the right side of the circular plate, a socket is provided on the left side of the circular plate, a filter cylinder is inserted in the socket, a limiting ring is fixed to the left side of the filter cylinder, a sealing plate is fixed to the left side of the circular plate, a threaded hole is provided on the left side of the filter bin, a sealing block is threadedly connected to the threaded hole, and the filtering mechanism also includes a driving component for driving the rotating rod to rotate.

[0008] Furthermore, the driving assembly includes a worm gear rotatably connected to the top surface of the filter bin, a sleeve is slidably connected to the outer peripheral wall of the rotating rod, a worm wheel meshing with the worm gear is fixed on the outer peripheral wall of the sleeve, a trapezoidal block is fixed to the right end of the rotating rod, and two extrusion blocks are fixed to the right inner wall of the filter bin.

[0009] Furthermore, the filter bin is a circular bin, the rotating rod and the filter bin are located on the same central axis, the left side of the filter cylinder is open, the outer diameter of the filter cylinder is matched with the inner diameter of the jack, and the filter cylinder is opposite to the connecting hole on the left side.

[0010] Furthermore, the filter cylinder and the sealing plate are opposite to each other in upper and lower directions, and sealing rings are fixed on the left side of the limiting ring and the left side of the sealing plate. The left side of the circular plate and the left end of the rotating rod are provided with movable grooves for the rotating block to slide left and right inside.

[0011] Furthermore, a threaded groove matched with the threaded hole is provided on the outer peripheral wall of the sealing block. The sealing block is a circular block. An abutment plate is fixed on the left side of the sealing block and a rubber sealing ring is fixed on the right side of the abutment plate.

[0012] Furthermore, the rotating rod is a square rod, the left side of the sleeve is provided with a square hole for the rotating rod to pass through and slide left and right inside, the bottom end of the worm extends to the inside of the filter bin, and the top end of the worm is fixed with an anti-skid rotating plate.

[0013] Furthermore, the trapezoidal block is an isosceles trapezoid, and the two extrusion blocks are opposed to each other up and down.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. When the check valve with filtering function is used, the valve body is connected to the pipeline system, so that the pipeline liquid flows through the filter bin and the valve body in sequence through the left liquid inlet pipe. A filter cylinder and a sealing plate are arranged inside the filter bin. When working, the filter cylinder is opposite to the left connecting hole to filter the incoming liquid. When the filter cylinder needs to be processed, the position of the sealing plate and the filter cylinder can be directly replaced by the driving component, so that the filter cylinder can be cleaned from the threaded hole while the left connecting hole is sealed. There is no need to close the main valve of the pipeline system during inspection and maintenance, thereby reducing the impact of maintenance on the pipeline system, making cleaning more convenient and more convenient for promotion and use.

[0016] 2. The check valve with filtering function has a driving assembly that drives the filter cylinder and the sealing plate to rotate through the worm and worm gear. The operation is simple and reliable. At the same time, the combination of the trapezoidal block and the extrusion block can increase the extrusion force of the circular plate on the left inner wall of the filter bin, thereby improving the sealing effect of the sealing plate on the left connecting hole, further increasing the stability and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of the utility model;

[0018] Figure 2 It is a front cross-sectional schematic diagram of the filter bin of the utility model;

[0019] Figure 3 It is a three-dimensional schematic diagram of the sleeve of the utility model.

[0020] In the figure: 1 valve body, 2 filter chamber, 3 connecting hole, 4 liquid inlet pipe, 501 rotating rod, 502 circular plate, 503 plug hole, 504 filter cylinder, 505 limit ring, 506 sealing plate, 507 threaded hole, 508 sealing block, 509 rotating block, 601 worm, 602 sleeve, 603 worm wheel, 604 trapezoidal block, 605 extrusion block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-2 A check valve with a filtering function in this embodiment includes a valve body 1, a filtering chamber 2 is fixed on the left side of the valve body 1, the filtering chamber 2 is a circular chamber, and connecting holes 3 are opened on the left and right sides of the filtering chamber 2, a liquid inlet pipe 4 is fixed on the left side of the filtering chamber 2, and a filtering mechanism is arranged in the filtering chamber 2. When in use, the valve body 1 is connected to the pipeline system, so that the pipeline liquid flows through the filtering chamber 2 and the valve body 1 in sequence through the left liquid inlet pipe 4. A filtering mechanism is arranged inside the filtering chamber 2. When it is necessary to process the filtered impurities, the filtering mechanism can be directly operated for processing. There is no need to close the main valve of the pipeline system during inspection and maintenance, thereby reducing the impact of maintenance on the pipeline system, making it more convenient to clean and more convenient for popularization and use.

[0023] See also Figure 2The filtering mechanism includes a rotating block 509 rotatably connected to the inner wall of the left side of the filter chamber 2, a circular plate 502 is slidably connected to the outer peripheral wall of the rotating block 509, a rotating rod 501 is fixed to the right side of the circular plate 502, and a movable groove for the rotating block 509 to slide left and right inside the left side of the circular plate 502 and the left end of the rotating rod 501 are provided. The rotating rod 501 and the filter chamber 2 are located on the same central axis, and a plug hole 503 is provided on the left side of the circular plate 502, and a filter screen is inserted into the plug hole 503. The filter cylinder 504 is open on the left side, the outer diameter of the filter cylinder 504 is matched with the inner diameter of the plug hole 503, the limit ring 505 is fixed on the left side of the filter cylinder 504, the filter cylinder 504 is opposite to the left connecting hole 3, when working, the filter cylinder 504 is opposite to the left connecting hole 3, so as to filter the incoming liquid, the left side of the circular plate 502 is fixed with a sealing plate 506, the filtering mechanism also includes a driving component for driving the rotating rod 501 to rotate, the filter cylinder 504 and The sealing plates 506 are opposite to each other, and sealing rings are fixed on the left side of the limit ring 505 and the left side of the sealing plate 506. When the filter cartridge 504 needs to be processed, the driving assembly drives the rotating rod 501 to rotate, and the rotating rod 501 drives the circular plate 502 to rotate, and the circular plate 502 drives the filter cartridge 504 and the sealing plate 506 to revolve around the central axis of the circular plate 502 and exchange positions, so that the sealing plate 506 seals the left connecting hole 3. A threaded hole 507 is opened on the left side of the filter bin 2. The threaded hole 507 is internally threadedly connected to a sealing block 508, and a threaded groove matching the threaded hole 507 is formed on the outer peripheral wall of the sealing block 508. The sealing block 508 is a circular block, and an abutment plate is fixed to the left side of the sealing block 508 and a rubber sealing ring is fixed to the right side of the abutment plate. Further, the sealing block 508 is rotated to disengage from the threaded hole 507, and the filter cartridge 504 can be pulled out from the inside of the socket 503 through the threaded hole 507 for cleaning. After cleaning, the above operation can be reversed.

[0024] See also Figure 2-3In this embodiment, the driving assembly includes a worm 601 rotatably connected to the top surface of the filter bin 2, a sleeve 602 is slidably connected to the outer peripheral wall of the rotating rod 501, the rotating rod 501 is a square rod, and a square hole is provided on the left side of the sleeve 602 for the rotating rod 501 to pass through and slide left and right inside it, the bottom end of the worm 601 extends to the inside of the filter bin 2, and an anti-skid rotating plate is fixed to the top of the worm 601, which facilitates the rotation of the worm 601 and controls the driving assembly to drive the rotating rod 501 to perform The outer wall of the sleeve 602 is fixed with a worm wheel 603 meshing with the worm 601. When the filter cartridge 504 needs to be cleaned, the worm 601 is rotated, the worm 601 drives the worm wheel 603 to rotate, the worm wheel 603 drives the sleeve 602 to rotate, the sleeve 602 drives the rotating rod 501 to rotate, and the position of the sealing plate 506 and the filter cartridge 504 is replaced. While sealing the left connecting hole 3, it is convenient to clean the filter cartridge 504 from the threaded hole 507. There is no need to close the main valve of the pipeline system during inspection and maintenance. , thereby reducing the impact of maintenance on the pipeline system, making it easier to clean and more convenient to promote and use. A trapezoidal block 604 is fixed to the right end of the rotating rod 501, and two extrusion blocks 605 are fixed to the right inner wall of the filter chamber 2. The trapezoidal block 604 is an isosceles trapezoid, and the two extrusion blocks 605 are opposite to each other. When the rotating rod 501 rotates, the trapezoidal block 604 will be driven to rotate. When the filter cylinder 504 and the sealing plate 506 rotate to be opposite to each other, the extrusion block 605 slides along the inclined surface of the trapezoidal block 604. When the filter cartridge 504 and the sealing plate 506 are rotated to other states, the squeezing block 605 contacts the inclined surface of the trapezoidal block 604, and the squeezing force thereon becomes smaller, which is beneficial to reducing the friction between the sealing plate 506 and the filter bin 2, facilitating rotation and reducing wear.

[0025] The working principle of the above embodiment is:

[0026] When in use, liquid flows into the filter cartridge 504 through the liquid inlet pipe 4 and the left connecting hole 3 for filtration, and after filtration, flows to the valve body 1 through the right connecting hole 3 and is discharged through the right side of the valve body 1. When the filter cartridge 504 needs to be cleaned, the worm 601 is rotated, the worm 601 drives the worm gear 603 to rotate, the worm gear 603 drives the sleeve 602 to rotate, the sleeve 602 drives the rotating rod 501 to rotate, the rotating rod 501 drives the circular plate 502 to rotate, the circular plate 502 drives the filter cartridge 504 and the sealing plate 506 to revolve around the central axis of the circular plate 502 and exchange positions, so that the sealing plate 506 seals the left connecting hole 3. At this time, the sealing block 508 is rotated to disengage it from the threaded hole 507, and the filter cartridge 504 can be removed from the plug hole 503 from the threaded hole 507. When the filter cartridge 504 and the sealing plate 506 are rotated to other states, the extrusion block 605 contacts the inclined surface of the trapezoidal block 604, and the extrusion force on it becomes smaller, which is beneficial to reduce the friction between the sealing plate 506 and the filter bin 2, and reduces the wear while facilitating the rotation.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A check valve with filtering function, comprising a valve body (1), characterized in that: A filter chamber (2) is fixed on the left side of the valve body (1), a communication hole (3) is provided on both the left and right sides of the filter chamber (2), a liquid inlet pipe (4) is fixed on the left side of the filter chamber (2), and a filter mechanism is provided in the filter chamber (2); The filtering mechanism comprises a rotating block (509) rotatably connected to the left inner wall of the filtering chamber (2); a circular plate (502) is slidably connected to the outer peripheral wall of the rotating block (509); a rotating rod (501) is fixed to the right side of the circular plate (502); a plug hole (503) is provided on the left side of the circular plate (502); a filter cylinder (504) is inserted into the plug hole (503); a limiting ring (505) is fixed to the left side of the filter cylinder (504); a sealing plate (506) is fixed to the left side of the circular plate (502); a threaded hole (507) is provided on the left side of the filtering chamber (2); a sealing block (508) is threadedly connected to the threaded hole (507); and the filtering mechanism further comprises a driving assembly for driving the rotating rod (501) to rotate.

2. A check valve with filtering function according to claim 1, characterized in that: The driving assembly comprises a worm (601) rotatably connected to the top surface of the filter bin (2); a sleeve (602) is slidably connected to the outer peripheral wall of the rotating rod (501); a worm wheel (603) meshing with the worm (601) is fixed to the outer peripheral wall of the sleeve (602); a trapezoidal block (604) is fixed to the right end of the rotating rod (501); and two extrusion blocks (605) are fixed to the right inner wall of the filter bin (2).

3. A check valve with filtering function according to claim 1, characterized in that: The filter chamber (2) is a circular chamber, the rotating rod (501) and the filter chamber (2) are located on the same central axis, the left side of the filter cylinder (504) is open, the outer diameter of the filter cylinder (504) is matched with the inner diameter of the insertion hole (503), and the filter cylinder (504) is opposite to the connecting hole (3) on the left side.

4. A check valve with filtering function according to claim 1, characterized in that: The filter cylinder (504) and the sealing plate (506) are opposed to each other in upper and lower directions. The left side of the limiting ring (505) and the left side of the sealing plate (506) are both fixed with sealing rings. The left side of the circular plate (502) and the left end of the rotating rod (501) are both provided with movable grooves for the rotating block (509) to slide left and right inside.

5. The check valve with filtering function according to claim 1, characterized in that: A threaded groove matching the threaded hole (507) is provided on the outer peripheral wall of the sealing block (508). The sealing block (508) is a circular block. An abutment plate is fixed on the left side of the sealing block (508) and a rubber sealing ring is fixed on the right side of the abutment plate.

6. A check valve with filtering function according to claim 2, characterized in that: The rotating rod (501) is a square rod. The left side of the sleeve (602) is provided with a square hole for the rotating rod (501) to pass through and slide left and right inside. The bottom end of the worm (601) extends into the filter bin (2). The top end of the worm (601) is fixed with an anti-slip rotating plate.

7. A check valve with filtering function according to claim 2, characterized in that: The trapezoidal block (604) is an isosceles trapezoid, and the two extrusion blocks (605) are opposed to each other in an upper and lower direction.

Images