A sewage lifting valve for a sewage lifting device

Abstract

The present invention discloses a sewage lifting valve for a sewage lifting device, comprising: a valve body, a maintenance valve cover fixed on the valve body, and a rotary valve disc rotatably connected to the valve body, a maintenance port is provided on one surface of the valve body, a maintenance valve cover is clamped on the maintenance port, and a rotating frame is fixedly connected to the inner wall of one side of the maintenance port, a rotating hole is provided on the rotating frame, and a rotary valve disc is inserted in the rotating hole; the valve body comprises an inlet section, a curved pipe section integrally connected to the inlet section, and an outlet section integrally connected to the curved pipe section, an arc groove is provided near the inlet section of the curved pipe section, the side of the arc groove near the inlet section conflicts with one end of the rotary valve disc, and the arc groove and one end of the rotary valve disc form an impurity accommodating chamber. According to the present invention, the cut-off gate valve and the check valve are combined into one, which is convenient for maintenance, small in size, and light in weight. It is used in a sewage treatment pipeline and has the functions of waterproof backflow and cut-off.

Description

Technical Field

[0001] The invention relates to the technical field of lifting valves, and in particular to a sewage lifting valve used in a sewage lifting device. Background Art

[0002] Sewage lift is a drainage device used in basements, ships, vehicles and other places far away from drainage risers and with poor drainage conditions. It can collect and treat domestic water in the bathroom. It is usually an integrated system that can solve public health problems in some special places. Fully automatic sewage lifts are mainly used to remove sewage from sanitary ware in basements and places far away from drainage risers that do not have gravity discharge of sewage. They can also be used in places such as ships and vehicles where drainage conditions are not very good. Generally, sewage lifting devices used in rural areas will build deep wells outdoors and place sewage extraction devices. Cut-off gate valves and swing check valves are required in the sewage lift system. During operation, the original check valve cavity is prone to accumulation of dirt and difficult maintenance. Among them, sewage lifting valves are used in sewage lifting devices. However, if the sewage lifting valve is repaired at this time, it is necessary to build up and down ladders, which will increase the size of the sewage lifting device, greatly increase the cost, and make it inconvenient to repair the sewage lifting valve. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a sewage lifting valve for a sewage lifting device, which combines a cut-off gate valve and a check valve into one, has a small size, light weight, and is easy to repair. It is used in sewage treatment pipelines and has the functions of waterproof backflow and cutting off. In order to achieve the above-mentioned purpose and other advantages according to the present invention, a sewage lifting valve for a sewage lifting device is provided, comprising:

[0004] A valve body, a maintenance valve cover fixed on the valve body, and a rotary valve disc rotatably connected to the valve body, wherein a maintenance port is provided on one surface of the valve body, the maintenance valve cover is clamped on the maintenance port, and a rotating frame is fixedly connected to an inner wall on one side of the maintenance port, the rotating frame is provided with a rotating hole, and the rotary valve disc is inserted into the rotating hole;

[0005] The valve body includes an inlet section, a curved pipe section integrally connected to the inlet section, and an outlet section integrally connected to the curved pipe section. The rotary valve flap is located at the inlet section and contacts the inner wall of the inlet section. The convex surface of the rotary valve flap is close to the inlet section, and the concave surface of the rotary valve flap is close to the outlet section. An arc-shaped groove is provided at the curved pipe section near the inlet section. The side of the arc-shaped groove close to the inlet section contacts one end of the rotary valve flap. The arc-shaped groove and one end of the rotary valve flap form an impurity accommodating chamber.

[0006] Preferably, the water outlet section is placed in the horizontal direction and parallel to the horizontal plane, and the water inlet section is placed in the vertical direction and perpendicular to the horizontal plane.

[0007] Preferably, the water outlet section is connected to a connecting port section, a valve cover is fixedly connected to the connecting port section, a valve stem is arranged in the connecting port section, a rotary handle is fixedly connected to one end of the valve stem, a latch is provided on the other end and a baffle is threadedly connected thereto, and the baffle extends from the connecting port section to the water outlet section.

[0008] Preferably, the rotating valve flap comprises a valve flap sphere, one end of the valve flap sphere is an arc end, the other end is an abutting plane end, one side of the valve flap sphere is an irregular concave surface, and the side of the valve flap sphere opposite to the irregular concave surface is a spherical surface.

[0009] Preferably, the planar end of the valve flap sphere is in conflict with the inner wall of the valve body, and the bottom end of the arc-shaped end is in conflict with the inner wall of the valve body to form a contact surface. Both the planar end and the arc-shaped end are in conflict with the inner wall of the valve body to form a closed area at the water inlet to prevent water backflow.

[0010] Preferably, a rotating handle is integrally connected to one end of the valve flap sphere away from the arc-shaped end, a rotating shaft is integrally connected to the rotating handle, and the rotating shaft is inserted into the rotating frame.

[0011] Compared with the prior art, the present invention has the following beneficial effects: a spherical cavity is arranged in the valve body so that the side wall of the spherical cavity is in conflict with the bottom end of the rotary valve disc, and impurities contained in the water flowing into the water inlet of the valve body and the water flowing back at the outlet are stored in the spherical cavity, so that the rotary valve disc can work normally without getting stuck, and when too many impurities accumulate in the spherical cavity, the impurities in the spherical cavity can be cleaned by opening the inspection valve cover without removing the valve body for inspection, and the valve body can be used in places with more impurities, which greatly improves the service life of the valve body, and the lifting valve is installed in a sewage lifting device to reduce the volume of the sewage lifting device and facilitate the maintenance of the lifting valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A half-sectional view of a sewage lifting valve for a sewage lifting device according to the present invention;

[0013] Figure 2 It is a half-section view of a rotary valve disc of a sewage lifting valve for a sewage lifting device according to the present invention.

[0014] In the figure: 10. valve body; 20. inspection valve cover; 30. rotating frame; 40. rotating valve disc; 50. valve stem; 60. turn wheel handle; 70. stop rod; 11. elbow section; 12. water inlet section; 13. water outlet section; 14. connecting port section; 15. valve cover; 41. valve disc sphere; 42. arc-shaped end; 43. impurity containing chamber; 45. irregular concave surface; 46. spherical surface; 47. plane end; 48. resistance surface; 49. rotating handle; 410. rotating axis. DETAILED DESCRIPTION

[0015] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0016] Reference Figure 1-2 , a sewage lifting valve for a sewage lifting device, comprising: a valve body 10, a maintenance valve cover 20 fixed on the valve body 10 and a rotary valve disc 40 rotatably connected to the valve body 10, a maintenance port is provided on one surface of the valve body 10, the maintenance valve cover 20 is clamped on the maintenance port, and a rotating frame 30 is fixedly connected to the inner wall of one side of the maintenance port, a rotating hole is provided on the rotating frame 30, a rotating hole is inserted with a rotary valve disc 40, the valve body 10 comprises an inlet section 12, a curved pipe section 11 integrally connected to the inlet section 12 and an outlet section 13 integrally connected to the curved pipe section 11, the rotary valve disc 40 is located at the position of the inlet section 12 and conflicts with the inner wall of the inlet section 12, the convex surface of the rotary valve disc 40 is close to the inlet section 12, and the concave surface of the rotary valve disc 40 is close to the outlet section 13. The outlet section 13 and the elbow section 11 are provided with an arc-shaped groove near the water inlet section 12, and the side of the arc-shaped groove near the water inlet section 12 conflicts with one end of the rotary valve flap 40, and the arc-shaped groove and one end of the rotary valve flap 40 form an impurity accommodating chamber 43. When water enters the water inlet section 12, the rotary valve flap 40 rotates away from the water inlet section 12 by the power of the water flow, so that the water flows into the water outlet section 13 normally. When sewage flows back at the water outlet section 13, the rotary valve flap 40 rotates toward the water inlet section 12 under the power of the backflowing sewage, thereby closing the opening of the water inlet section 12, so that the sewage cannot flow back, and the impurities in the sewage in the water inlet section 12 and the sewage in the water outlet section 13 are all precipitated in the impurity accommodating chamber 43 when flowing, so that the rotary valve flap 40 works normally and will not get stuck.

[0017] Furthermore, the outlet section 13 is placed in the horizontal direction and parallel to the horizontal plane, and the water inlet section 12 is placed in the vertical direction and perpendicular to the horizontal plane. The sewage lifting valve is installed on the sewage lifting device during installation, which is convenient for maintenance of the lifting valve and reduces the volume of the lifting device. At this time, the lifting device does not need to be installed with an up and down ladder.

[0018] Furthermore, the water outlet section 13 is connected to a connecting port section 14, a valve cover 15 is fixedly connected to the connecting port section 14, a valve stem 50 is arranged in the connecting port section 14, one end of the valve stem 50 is fixedly connected to a rotary handle 60, and the other end is provided with a latching tooth and is threadedly connected with a blocking rod 70, the blocking rod 70 extends from the connecting port section 14 to the water outlet section 13, when the lifting valve is repaired, the rotary handle 60 is rotated to drive the valve stem 50 to rotate so that the blocking rod 70 moves toward the inner wall of the water outlet section 13, thereby blocking the water outlet section 13 and completely isolating the sewage backflow, and then the inspection valve cover 20 is opened to repair the lifting valve.

[0019] Furthermore, the rotating valve flap 40 includes a valve flap ball 41, one end of the valve flap ball 41 is an arc-shaped end 42, and the other end is a contact plane end 47. One side of the valve flap ball 41 is an irregular concave surface 45, and the side of the valve flap ball 41 opposite to the irregular concave surface 45 is a spherical surface 46. The plane end 47 of the valve flap ball 41 is in contact with the inner wall of the valve body 10, and the bottom end of the arc-shaped end 42 is in contact with the inner wall of the valve body 10 to form a contact surface 48. The plane end 47 and the arc-shaped end 42 are both in contact with the inner wall of the valve body 10 to form a closed area at the water inlet to prevent water backflow. A rotating handle 49 is integrally connected to the end of the valve flap ball 41 away from the arc-shaped end 42, and a rotating shaft 410 is integrally connected to the rotating handle 49, and the rotating shaft 410 is inserted into the rotating frame 30.

[0020] Working principle: When water enters the water inlet section 12, the rotary valve flap 40 rotates away from the water inlet section 12 by the power of the water flow, so that the water flows into the water outlet section 13 normally. When there is sewage backflow at the water outlet section 13, the rotary valve flap 40 rotates toward the water inlet section 12 under the power of the backflowing sewage, thereby closing the water inlet section 12 opening, so that the sewage cannot flow back, and the impurities in the sewage in the water inlet section 12 and the sewage in the water outlet section 13 are all precipitated in the impurity containing chamber 43 when flowing, so that the rotary valve flap 40 works normally and will not get stuck. When the lifting valve needs to be repaired, the rotary wheel handle 60 is turned at this time, and the valve stem 50 is driven to rotate to move the blocking rod 70 toward the inner wall of the water outlet section 13, thereby blocking the water outlet section 13 and completely isolating the sewage backflow. Then the inspection valve cover 20 is opened to repair the lifting valve.

[0021] The number of devices and processing scales described here are used to simplify the description of the present invention, and the application, modification and variation of the present invention will be obvious to those skilled in the art.

[0022] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A sewage lifting valve for a sewage lifting device, characterized in that: include: A valve body (10), a maintenance valve cover (20) fixed on the valve body (10), and a rotary valve flap (40) rotatably connected to the valve body (10), wherein a maintenance opening is provided on a surface of the valve body (10), the maintenance valve cover (20) is clamped on the maintenance opening, and a rotary frame (30) is fixedly connected to an inner wall of one side of the maintenance opening, the rotary frame (30) is provided with a rotary hole, and the rotary valve flap (40) is inserted into the rotary hole; The valve body (10) comprises a water inlet section (12), a curved pipe section (11) integrally connected to the water inlet section (12), and a water outlet section (13) integrally connected to the curved pipe section (11); the rotary valve flap (40) is located at the water inlet section (12) and contacts the inner wall of the water inlet section (12); the convex surface of the rotary valve flap (40) is close to the water inlet section (12); the concave surface of the rotary valve flap (40) is close to the water outlet section (13); an arc-shaped groove is provided at the curved pipe section (11) near the water inlet section (12); the side of the arc-shaped groove near the water inlet section (12) contacts one end of the rotary valve flap (40); the arc-shaped groove and one end of the rotary valve flap (40) form an impurity accommodating chamber (43).

2. A sewage lifting valve for a sewage lifting device as claimed in claim 1, characterized in that: The water outlet section (13) is placed in a horizontal direction and is parallel to the horizontal plane, and the water inlet section (12) is placed in a vertical direction and is perpendicular to the horizontal plane.

3. The sewage lifting valve for a sewage lifting device according to claim 1, characterized in that: The water outlet section (13) is connected to a connecting port section (14), a valve cover (15) is fixedly connected to the connecting port section (14), a valve stem (50) is arranged in the connecting port section (14), one end of the valve stem (50) is fixedly connected to a rotating wheel handle (60), and the other end of the valve stem (50) is provided with a latching tooth and is threadedly connected to a blocking rod (70), and the blocking rod (70) extends from the connecting port section (14) to the water outlet section (13).

4. A sewage lifting valve for a sewage lifting device as claimed in claim 1, characterized in that: The rotary valve flap (40) comprises a valve flap sphere (41), one end of the valve flap sphere (41) is an arc-shaped end (42), the other end is an abutting plane end (47), one side surface of the valve flap sphere (41) is an irregular concave surface (45), and the side surface of the valve flap sphere (41) opposite to the irregular concave surface (45) is a spherical surface (46).

5. A sewage lifting valve for a sewage lifting device as claimed in claim 4, characterized in that: The contact plane end (47) of the valve disc ball (41) contacts the inner wall of the valve body (10), and the bottom end of the arc-shaped end (42) contacts the inner wall of the valve body (10) to form a contact surface (48). Both the contact plane end (47) and the arc-shaped end (42) contact the inner wall of the valve body (10) to form a closed area at the water inlet to prevent water from flowing back.

6. A sewage lifting valve for a sewage lifting device as claimed in claim 4, characterized in that: A rotating handle (49) is integrally connected to one end of the valve disc ball (41) away from the arc-shaped end (42), and a rotating shaft (410) is integrally connected to the rotating handle (49), and the rotating shaft (410) is inserted into the rotating frame (30).

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