Check valve with filtering mechanism

Abstract

The utility model discloses a check valve with a filter mechanism, which comprises a valve body, a filter screen is fixedly connected in the valve body, a rotating shaft is mounted in the filter screen through a bearing, an impeller is fixedly connected to the outer side of the rotating shaft, an elastic rod is fixedly connected to the side surface of the filter screen, a raised head is fixedly connected to the elastic rod, and the raised head is fixedly connected to the valve body. The filter screen, the impeller, the raised head, the elastic rod and other parts are designed to be used in cooperation, liquid flowing in the valve body can be filtered through the filter screen, foreign matter doped in the liquid is prevented from influencing use of the valve body, the liquid flowing at a high speed can drive the impeller to rotate, the impeller rotates to impact the upper portion of the raised head, and the working efficiency is improved. And the raised head can drive the elastic rod to vibrate, so that the filter screen is driven to vibrate, and abnormal working of the valve body caused by blockage of the filter screen is avoided.

Description

Technical Field

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

[0002] A check valve is an automatic valve whose primary function is to prevent backflow of media. Through its internal design, a check valve ensures that media flow in only one direction, thus playing a key role in various piping systems. This valve is widely used in applications such as pump outlets, compressed air systems, and vacuum systems to prevent media from flowing in unintended directions, protecting equipment and systems from damage.

[0003] The prior art provides a check valve (Announcement No.: CN220168668U). This utility model discloses a check valve, which belongs to the field of valve manufacturing technology. It solves the problem that the water pressure value for opening the existing check valve is constant and cannot be adjusted. The check valve includes a valve body, with connecting flanges fixedly connected to the left and right sides of the valve body. The outer ring of the outer surface of the connecting flange is penetrated by a connecting screw hole. The top of the valve body is fixedly connected to a valve pipe, and the top of the valve pipe is fixedly connected to a lower flange. The top of the lower flange is provided with an upper flange. The center of the top of the upper flange is provided with an adjustment device. The bottom of the adjustment device passes through the upper flange, the lower flange and the valve pipe from top to bottom and extends to the inner cavity of the valve body. After installation, the utility model can be opened under different water pressures and can be installed on pipelines with different pressures, greatly improving the versatility of the check valve.

[0004] However, the traditional check valve still has the following defects:

[0005] The liquid flowing in the valve body may be mixed with some particles, which may affect the normal use of the valve body. Utility Model Content

[0006] The purpose of the utility model is to provide a check valve with a filtering mechanism. The utility model is to provide a check valve with a filtering mechanism. The filter screen, the rotating shaft, the impeller and other components are designed to be used together. The liquid flowing in the valve body can be filtered through the filter screen, and the fast-flowing water in the valve body drives the impeller to rotate. The impeller hits the convex head and drives the filter screen to vibrate to prevent the filter screen from being blocked, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a check valve with a filtering mechanism, comprising a valve body, a filter screen fixedly connected to the valve body, a rotating shaft installed in the filter screen through a bearing, an impeller fixedly connected to the outside of the rotating shaft, an elastic rod fixedly connected to the side of the filter screen, and a protrusion fixedly connected to the elastic rod.

[0008] Preferably, a valve seat is provided on the valve body, a valve stem is provided on the valve seat, a knob is fixedly connected to the upper end of the valve stem, and a locking mechanism for limiting the valve stem is provided on the knob.

[0009] Preferably, the locking mechanism includes a through hole, a movable rod, a sleeve, a guide rod, and a spring. A through hole is opened in the knob, a movable rod is slidably connected in the through hole, a sleeve is fixedly connected to the valve seat, the inner bottom end of the sleeve is fixedly connected to the guide rod, and a spring is sleeved on the outer side of the guide rod.

[0010] Preferably, one end of the spring is fixedly connected to the lower end of the moving rod, and the other end of the spring is fixedly connected to the inner bottom end of the sleeve.

[0011] Preferably, the moving rod is slidably connected to the inside of the sleeve, and the moving rod is slidably connected to the outside of the guide rod.

[0012] Preferably, there are a plurality of through holes, and the through holes are distributed on the knob in a circular array.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This utility model is designed to cooperate with the filter screen, impeller, convex head, elastic rod and other components, so that the liquid flowing in the valve body can be filtered through the filter screen to prevent foreign matter mixed in the liquid from affecting the use of the valve body. In addition, the high-speed flowing liquid can drive the impeller to rotate, and the rotation of the impeller hits the upper part of the convex head, which can cause the convex head to drive the elastic rod to vibrate, thereby driving the filter screen to vibrate, thereby avoiding clogging of the filter screen and causing abnormal operation of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a portion of the valve body of the present invention;

[0017] Figure 3 This is a schematic diagram of the locking mechanism structure of the present utility model;

[0018] Figure 4 Practical Figure 3 Magnified view of area A in .

[0019] In the figure: 1. valve body; 2. filter screen; 3. rotating shaft; 4. impeller; 5. elastic rod; 6. protrusion; 7. valve seat; 8. valve stem; 9. knob; 10. locking mechanism; 101. through hole; 102. moving rod; 103. sleeve; 104. guide rod; 105. spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a check valve with a filtering mechanism, comprising a valve body 1, a filter screen 2 fixedly connected inside the valve body 1, a rotating shaft 3 installed in the filter screen 2 through a bearing, an impeller 4 fixedly connected to the outside of the rotating shaft 3, an elastic rod 5 fixedly connected to the side of the filter screen 2, and a protrusion 6 fixedly connected to the elastic rod 5.

[0022] The utility model is provided with the filter screen 2, the impeller 4, the elastic rod 5, the convex head 6 and other components for use together, so that the liquid flowing in the valve body 1 can be filtered through the filter screen 2 to prevent foreign matter mixed in the liquid from affecting the operation of the valve body 1, and the high-speed flowing liquid in the valve body 1 will drive the impeller 4 to rotate, and the rotation of the impeller 4 will hit the upper part of the convex head 6, and the convex head 6 will drive the elastic rod 5 to vibrate, thereby causing the filter screen 2 fixedly connected to the elastic rod 5 to vibrate, thereby avoiding clogging of the filter screen 2.

[0023] The valve body 1 is provided with a valve seat 7 , and the valve seat 7 is provided with a valve stem 8 . The upper end of the valve stem 8 is fixedly connected to a knob 9 , and the knob 9 is provided with a locking mechanism 10 that can limit the valve stem 8 .

[0024] The valve plug inside the valve body 1 can be moved by rotating the valve stem 8 , thereby adjusting the flowability inside the valve body 1 .

[0025] The locking mechanism 10 includes a through hole 101, a movable rod 102, a sleeve 103, a guide rod 104, and a spring 105. A through hole 101 is opened in the knob 9, and the movable rod 102 is slidably connected in the through hole 101. The sleeve 103 is fixedly connected to the valve seat 7, and the inner bottom end of the sleeve 103 is fixedly connected to the guide rod 104. The outer side of the guide rod 104 is sleeved with a spring 105.

[0026] The present invention cooperates with various components in the locking mechanism 10, and the movable rod 102 can be pulled to slide out of the through hole 101 provided in the knob 9. At this time, the limit on the knob 9 is released, and the knob 9 is turned to drive the valve stem 8 to rotate, and the valve plug inside the valve body 1 is adjusted. When the flow rate is adjusted to a suitable flow rate, the movable rod 102 is released and the elastic action of the spring 105 allows the movable rod 102 to slide back into the through hole 101. At this time, the knob 9 can be limited, thereby limiting the valve stem 8, preventing the valve stem 8 from rotating on its own and causing a change in the flow rate.

[0027] One end of the spring 105 is fixedly connected to the lower end of the moving rod 102 , and the other end of the spring 105 is fixedly connected to the inner bottom end of the sleeve 103 .

[0028] When the moving rod 102 moves out of the through hole 101 , the moving rod 102 presses the spring 105 to generate elastic force, and then the elastic force of the spring 105 causes the moving rod 102 to move and reset.

[0029] The moving rod 102 is slidably connected to the inside of the sleeve 103 , and the moving rod 102 is slidably connected to the outside of the guide rod 104 .

[0030] The guide rod 104 can provide a certain amount of guidance to the moving rod 102 during its movement, so that the moving rod 102 moves more smoothly without deviation.

[0031] There are a plurality of through holes 101 , which are distributed on the knob 9 in a circular array.

[0032] The valve stem 8 can be indirectly limited by limiting the position of the knob 9 through the plurality of through holes 101 .

[0033] When the flow rate in the valve body 1 needs to be adjusted during specific use, the moving rod 102 can be pulled to slide it out of the through hole 101 opened in the knob 9. At this time, the limit of the knob 9 is released, and the knob 9 is turned to drive the valve stem 8 to rotate, and the valve plug inside the valve body 1 is adjusted. In the process of moving the moving rod 102 moving out of the through hole 101, the moving rod 102 will squeeze the spring 105 so that the spring 105 generates elastic force. When the flow rate adjustment is completed, the moving rod 102 is released and the elastic force of the spring 105 can make the moving rod 102 move. The rod 102 moves and slides back into the through hole 101 opened in the knob 9, thereby indirectly limiting the valve stem 8, and the filter screen 2 filters the liquid flowing in the valve body 1 to prevent foreign matter mixed in the liquid from affecting the operation of the valve body 1, and the high-speed flowing liquid in the valve body 1 will drive the impeller 4 to rotate, and the rotation of the impeller 4 will hit the upper part of the convex head 6, and the convex head 6 will drive the elastic rod 5 to vibrate, thereby causing the filter screen 2 fixedly connected to the elastic rod 5 to vibrate, thereby avoiding clogging of the filter screen 2.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A check valve with a filtering mechanism, comprising a valve body (1), characterized in that: A filter screen (2) is fixedly connected inside the valve body (1), a rotating shaft (3) is installed inside the filter screen (2) via a bearing, an impeller (4) is fixedly connected to the outside of the rotating shaft (3), an elastic rod (5) is fixedly connected to the side of the filter screen (2), and a protrusion (6) is fixedly connected to the elastic rod (5).

2. A check valve with a filter mechanism according to claim 1, characterized in that: The valve body (1) is provided with a valve seat (7), the valve seat (7) is provided with a valve stem (8), the upper end of the valve stem (8) is fixedly connected with a knob (9), and the knob (9) is provided with a locking mechanism (10) capable of limiting the position of the valve stem (8).

3. A check valve with a filter mechanism according to claim 2, characterized in that: The locking mechanism (10) comprises a through hole (101), a movable rod (102), a sleeve (103), a guide rod (104), and a spring (105); a through hole (101) is provided in the knob (9); the movable rod (102) is slidably connected in the through hole (101); the sleeve (103) is fixedly connected to the valve seat (7); the inner bottom end of the sleeve (103) is fixedly connected to the guide rod (104); and a spring (105) is sleeved on the outer side of the guide rod (104).

4. A check valve with a filter mechanism according to claim 3, characterized in that: One end of the spring (105) is fixedly connected to the lower end of the moving rod (102), and the other end of the spring (105) is fixedly connected to the inner bottom end of the sleeve (103).

5. The check valve with a filter mechanism according to claim 3, characterized in that: The moving rod (102) is slidably connected to the inside of the sleeve (103), and the moving rod (102) is slidably connected to the outside of the guide rod (104).

6. The check valve with a filter mechanism according to claim 3, characterized in that: There are a plurality of through holes (101), and the plurality of through holes (101) are distributed on the knob (9) in a circular array.

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