Flat gate valve capable of rapidly discharging sewage

Abstract

According to the technical scheme, the flat gate valve is characterized by comprising a valve body and a gate plate located in the valve body, an injection port and a sewage outlet are formed in the two ends of the bottom of the valve body, a stirring shaft close to the sewage outlet is rotationally connected into the valve body, and the length direction of the stirring shaft is the same as the thickness direction of the gate plate. A plurality of stirring blades circumferentially distributed around the axis of the stirring shaft are arranged on the outer wall of the stirring shaft, one end of the stirring shaft is limited on the inner wall of the valve body, the other end of the stirring shaft penetrates out of the valve body, and a driving block capable of being stressed is arranged on the end face, penetrating out of the valve body, of the stirring shaft; and rotating force is applied to the driving block, so that the stirring blades rotate along with the stirring shaft, and meanwhile, dirt is stirred to be loose and pushed to the dirt outlet, and the problems that dirt cleaning is slow and potential safety hazards exist in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, and more specifically to a flat gate valve capable of quickly discharging sewage. Background Art

[0002] At present, most flat gate valves use a lower guide hole structure. When working, the gate is driven up and down by the valve stem, and the valve seat and the gate together form the opening and closing of the valve. During the up and down movement of the gate of an ordinary flat gate valve, a large part of the dirt in the pipeline will enter the valve cavity through the channel formed between the gate, the valve body and the valve seat as the medium flows, and accumulate at the bottom of the valve cavity, resulting in the gate being unable to move down and close in place. If the dirt is not removed in time, it will affect the normal operation and service life of the flat gate valve, causing economic losses.

[0003] At present, a Chinese patent with the announcement number CN206280567U discloses a flat gate valve capable of draining sewage. The gate valve is provided with an injection port and a sewage outlet at both ends of the bottom of the valve body, so that water can be poured into the valve body and sewage can be discharged from the valve body. Although the function of cleaning sewage is achieved to a certain extent, there are still defects. First, during long-term use, the gate plate moves downward many times and exerts downward squeezing force on the sewage accumulated at the bottom of the valve body. The sewage is easy to become compact and has a strong adhesion to the inner wall of the valve body. When the sewage is pressed down, it will extend around the bottom of the gate plate. , dirt can easily block the injection port and the sewage outlet, and a higher water pressure is required to inject water into the valve body, which can easily cause irreversible damage to the valve body. At the same time, the dirt at the sewage outlet cannot be dispersed by sufficient water pressure, resulting in the phenomenon that water is difficult to be discharged from the sewage outlet after entering the valve body, and the sewage discharge efficiency is low; secondly, if a manual handheld thin stick is used to dredge the injection port and the sewage outlet, the operation is complicated. At the same time, when the dirt-mixed water flows out of the sewage outlet, it will splash onto the maintenance personnel and the surrounding areas. If the medium contains toxic substances or is corrosive, there will be safety hazards. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a flat gate valve that can quickly discharge sewage and is safe and reliable.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flat gate valve capable of quickly discharging sewage, comprising a valve body and a gate plate positioned in the valve body, an injection port and a sewage outlet are arranged at two ends of the bottom of the valve body, a stirring shaft is rotatably connected to the valve body and is adjacent to the sewage outlet, the length direction of the stirring shaft is the same as the thickness direction of the gate plate, a plurality of stirring blades distributed in a circle around the axis of the stirring shaft are arranged on the outer wall of the stirring shaft, one end of the stirring shaft is limited to the inner wall of the valve body and the other end passes through the valve body, a driving block for bearing force is arranged on the end surface of the stirring shaft passing through the valve body, the gate plate is provided with an anti-disturbance notch for accommodating the stirring blade and the stirring shaft, and a rotational force is applied to the driving block so that the stirring blade loosens the sewage and pushes it to the sewage outlet while the stirring shaft rotates.

[0006] As a further improvement of the present invention, a plurality of the stirring blades are provided with a plurality of notches distributed along the length direction of the stirring shaft, and the notches on adjacent stirring blades are staggered with each other.

[0007] As a further improvement of the utility model, several of the stirring blades are curved.

[0008] As a further improvement of the present invention, the bottom surface of the inner cavity of the valve body is inclined relative to the horizontal plane and the two ends are respectively connected with the injection port and the sewage outlet. The height of the sewage outlet is lower than the height of the injection port, and the bottom surface of the gate plate has the same degree of inclination as the bottom surface of the inner cavity of the valve body.

[0009] The beneficial effects of the utility model are as follows: by applying rotational force to the driving block, the stirring blades can loosen the dirt and push it toward the dirt outlet while the stirring shaft rotates. Compared with the prior art, this design can loosen compacted dirt and speed up the cleaning of dirt, thereby improving maintenance efficiency; at the same time, it avoids direct contact between maintenance personnel and dirt, thereby ensuring the safety of maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the front view of the utility model;

[0011] Figure 2 for Figure 1 A three-dimensional view below the middle AA with the gate moved down into position;

[0012] Figure 3 for Figure 2 The main cross-sectional view of

[0013] Figure 4 for Figure 2 Exploded diagram of

[0014] Figure 5 It is a stereoscopic diagram of the stirring blade and the stirring shaft as a whole in the utility model.

[0015] Figure numerals: 1, valve body; 11, injection port; 12, sewage outlet; 2, gate; 21, anti-disturbance notch; 3, stirring shaft; 4, stirring blade 41, notch; 5, driving block. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments, wherein the same components are indicated by the same reference numerals.

[0017] Reference Figures 1 to 5 As shown, a flat gate valve capable of rapid sewage discharge in this embodiment comprises a valve body 1 and a gate plate 2 positioned in the valve body 1, the valve body 1 comprises a flow channel for medium circulation and a plate chamber whose height is lower than that of the flow channel and for the gate plate 2 to extend into, an injection port 11 and a sewage outlet 12 are arranged at both ends of the bottom of the plate chamber, the injection port 11 and the sewage outlet 12 are both threadedly connected with bolts to prevent medium leakage, the outer contour of the gate plate 2 is a rectangle, and the cross section of the flow channel is a circle;

[0018] Based on the aforementioned prior art, a disassembly hole is opened on one of the side walls of the plate chamber, the disassembly hole is adjacent to the sewage outlet 12, the disassembly hole is a countersunk hole and the small end is connected to the inner cavity of the plate chamber, a plurality of threaded holes are processed on the stepped surface of the disassembly hole, an axial end groove coaxial with the disassembly hole is processed on the inner wall of the plate chamber, one end of the stirring shaft 3 matches the axial end groove, a plurality of stirring blades 4 distributed in a circle around the axis of the stirring shaft 3 are integrally formed on the outer wall of the stirring shaft 3, a limiting ring with an outer diameter matching the inner diameter of the small end of the disassembly hole is connected to the outer wall of the stirring shaft 3 by key connection or welding, the length of the stirring blade 4 parallel to the length direction of the stirring shaft 3 is less than the width of the inner cavity of the plate chamber, the circumferential diameter of the outer edges of the plurality of stirring blades 4 is less than the outer diameter of the limiting ring, the stirring shaft 3 is installed into the plate chamber through the disassembly hole until one end of the stirring shaft 3 is inserted into the axial end groove, the limiting ring is located in the small end of the disassembly hole, and the plurality of stirring blades 4 are all located in the plate chamber, and then a The cover plate with a matching inner diameter at the large end is sleeved on the outside of the stirring shaft 3 until the cover plate is in close contact with the stepped surface of the disassembly hole, and then a bolt is passed through the cover plate and screwed into the threaded hole to position the cover plate in the disassembly hole. A driving block is integrally formed on the end surface of the stirring shaft 3 passing through the cover plate, and the driving block is designed as a hexagonal column. Under the premise of not affecting the gate plate 2 to cut off the flow of the medium, one corner of the gate plate 2 is cut and an anti-disturbance notch 21 is processed. The anti-disturbance notch 21 can be used to accommodate the stirring shaft 3 and the stirring blade 4 as a whole. In this way, it can be ensured that when the gate plate 2 is closed downward in place, the stirring blade 4 and the stirring shaft 3 are located in the anti-disturbance notch 21 as a whole and do not contact the gate plate 2, thereby avoiding the interference between the gate plate 2 and the stirring blade 4. In terms of sealing, a sealing ring can be added on the outer wall of the limit ring, a sealing ring can be added between the stirring shaft 3 and the cover plate, and a sealing gasket can be added between the cover plate and the stepped surface of the disassembly hole. The first three places can be added selectively to prevent the medium from leaking from the disassembly hole.

[0019] During the cleaning process, the bolts at the injection port 11 and the sewage outlet 12 are removed, and then a water pump or a water injection gun is installed at the injection port 11, and a drainage pipeline can be installed at the sewage outlet 12. Then, one end of the hexagonal wrench is sleeved outside the driving block and rotated. The stirring blade 4 rotates with the stirring shaft 3 and loosens the compacted dirt near the sewage outlet 12. The water pump or water injection gun is started, and water enters from the injection port 11 and disperses the dirt at the injection port 11. Then, the water will carry the loose dirt out of the sewage outlet 12. , as the dirt at the sewage outlet 12 and the injection port 11 loosens and is discharged from the plate chamber, the dirt in the middle section will also become loose or slide relative to the bottom edge of the plate chamber when one end is stressed and the other end is unsupported. When the dirt in the middle section reaches the vicinity of the sewage outlet 12, it will be stirred up by the stirring blade 4. Finally, all the dirt is discharged from the valve body 1 through the sewage outlet 12. After the dirt is cleaned, the wrench is removed, the stirring shaft 3 stops rotating, and then the objects installed by the injection port 11 and the sewage outlet 12 are removed and the bolts are screwed on;

[0020] Compared with the prior art, this design can loosen compacted dirt and speed up the cleaning of dirt, thereby improving maintenance efficiency; at the same time, it avoids direct contact between maintenance personnel and dirt, thereby ensuring the safety of maintenance personnel.

[0021] As a specific implementation method of the improvement, refer to Figure 5 As shown, a plurality of notches 41 distributed along the length direction of the stirring shaft 3 are cut on each stirring blade 4 by utilizing a cutting process, and the notches 41 on adjacent stirring blades 4 are staggered with each other. In the process of the stirring blades 4 stirring the dirt, the dirt will change direction multiple times and pass through the notches 41 on each stirring blade 4. Such a design can increase the stirring efficiency of the stirring blades 4, and can further break up large pieces of dirt into small pieces or sparse pieces, making it easier for the dirt to be quickly flushed out of the valve body 1, thereby preventing dirt from getting stuck.

[0022] As a specific implementation method of the improvement, refer to Figure 3 and Figure 5 As shown, the projection shape of the stirring blade 4 on the plane perpendicular to the axis of the stirring shaft 3 is designed to be curved and the protruding direction of the stirring blade 4 is opposite to the rotation direction of the stirring blade 4. In the process of rotation of the stirring blade 4, the stirring blade 4 produces an effect similar to shoveling soil on the dirt. Compared with the design in which the stirring blade 4 is designed to be straight, such a design allows the end of the stirring blade 4 to first penetrate into the dirt and then disperse the dirt, further accelerating the speed at which the dirt is dispersed. At the same time, it can also produce a more effective thrust on the dirt to push it toward the outlet 12, further accelerating the speed at which the dirt is discharged from the valve body 1.

[0023] As a specific implementation method of the improvement, refer to Figure 3 and Figure 4As shown, the bottom surface of the inner cavity of the valve body 1 is inclined relative to the horizontal plane and the two ends are connected with the injection port 11 and the sewage outlet 12 respectively. The height of the sewage outlet 12 is lower than the height of the injection port 11. The bottom surface of the gate plate 2 has the same inclination as the bottom surface of the inner cavity of the valve body 1. When the dirt falls to the bottom surface of the plate chamber, it will move toward the sewage outlet 12 along the bottom surface of the plate chamber. When the dirt is less and the gate plate 2 is closed downward, the dirt is located in the anti-disturbance notch 21, and the gate plate 2 is fully fitted with the bottom surface of the inner cavity of the valve body 1. Such a design can extend the effective closing time of the gate plate 2, thereby extending the maintenance cycle. At the same time, during the maintenance process, it is conducive to the flow of dirt to the sewage outlet 12, speeding up the discharge of dirt and shortening the maintenance time.

[0024] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A flat gate valve capable of rapid sewage discharge, comprising a valve body (1) and a gate plate (2) positioned in the valve body (1), wherein both ends of the bottom of the valve body (1) are provided with an inlet (11) and a sewage outlet (12), characterized in that: A stirring shaft (3) adjacent to the sewage outlet (12) is rotatably connected inside the valve body (1), the length direction of the stirring shaft (3) being the same as the thickness direction of the gate plate (2), a plurality of stirring blades (4) are arranged on the outer wall of the stirring shaft (3) and are distributed in a circumferential manner around the axis of the stirring shaft (3), one end of the stirring shaft (3) is limited on the inner wall of the valve body (1) and the other end passes through the valve body (1), a driving block (5) capable of receiving force is arranged on the end surface of the stirring shaft (3) passing through the outside of the valve body (1), and the gate plate (2) is provided with an anti-disturbance notch (21) for accommodating the stirring blade (4) and the stirring shaft (3), and by applying a rotational force to the driving block (5), the stirring blade (4) loosens the sewage and pushes it toward the sewage outlet (12) while rotating with the stirring shaft (3).

2. A flat gate valve capable of rapid sewage discharge according to claim 1, characterized in that: A plurality of the stirring blades (4) are each provided with a plurality of notches (41) distributed along the length direction of the stirring shaft (3), and the notches (41) on adjacent stirring blades (4) are staggered with respect to each other.

3. A flat gate valve capable of rapid sewage discharge according to claim 1 or 2, characterized in that: The plurality of stirring blades (4) are all curved.

4. A flat gate valve capable of rapid sewage discharge according to claim 1 or 2, characterized in that: The bottom surface of the inner cavity of the valve body (1) is inclined relative to the horizontal plane and the two ends are respectively connected to the injection port (11) and the sewage outlet (12); the height of the sewage outlet (12) is lower than the height of the injection port (11); and the bottom surface of the gate plate (2) and the bottom surface of the inner cavity of the valve body (1) have the same degree of inclination.

Images