Automatic flushing device for sludge screw pump

Abstract

The utility model relates to the technical field of sludge screw pump automatic flushing devices, in particular to a sludge screw pump automatic flushing device which comprises a screw pump body, the screw pump body comprises a main pump frame, a driving motor, a slurry inlet shell, a horizontal shell and a slurry discharging shell, the driving motor is fixedly installed on one side of the main pump frame, and the horizontal shell is fixedly installed on the other side of the main pump frame. The slurry inlet shell is fixedly installed on the other side of the main pump frame, the horizontal shell is connected to the side, away from the main pump frame, of the slurry inlet shell in a sealed mode, and a discharging screw connected with the driving motor is rotationally installed in the horizontal shell. According to the automatic flushing device for the sludge screw pump, through reasonable structural design, the automatic flushing function of the sludge screw pump is achieved. And different positions of the sludge screw can be better cleaned through a forward flushing mode and a reverse flushing mode, residual sludge in the pump can be effectively removed, the conveying efficiency of the screw pump is improved, and the service life of the screw pump is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic flushing devices for sludge screw pumps, and in particular to an automatic flushing device for sludge screw pumps. Background Technology

[0002] A sludge screw pump is a type of pump specifically designed for conveying media with high solid content and high viscosity, such as sludge. This type of pump is particularly suitable for wastewater treatment plants, industrial wastewater treatment systems, and other applications requiring the handling of high-viscosity fluids containing solid particles.

[0003] During normal startup, sludge enters from the pump body inlet and exits from the outlet. Once the pump stops, the internal pipe cavity from the pump body inlet to the outlet is filled with sludge. Over time, the sewage evaporates, the sludge dries and settles, clogging the internal pipe cavity. This can easily cause the rotor to fail to rotate, resulting in the pump failing to start. The pump body pipe needs to be disassembled and the inside cleaned before it can be used. This makes the use of sludge screw pumps very cumbersome. Utility Model Content

[0004] This invention solves the problems in related technologies and proposes an automatic flushing device for sludge screw pumps.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] An automatic flushing device for a sludge screw pump includes a screw pump body, which comprises a main pump frame, a drive motor, an inlet shell, a horizontal shell, and a discharge shell. The drive motor is fixedly installed on one side of the main pump frame, and the inlet shell is fixedly installed on the other side of the main pump frame. The horizontal shell is sealed to the side of the inlet shell away from the main pump frame, and a discharge screw connected to the drive motor is rotatably installed in the horizontal shell. The discharge shell is fixedly installed at the outer end of the horizontal shell, and a flushing pipe assembly is installed above the discharge shell and the inlet shell. A diversion liquid inlet assembly is installed at the upper end of the flushing pipe assembly, and the diversion liquid inlet assembly is sealed and fixedly connected to the flushing pipe assembly. A sludge discharge box assembly is also fixedly installed in the middle of the flushing pipe assembly.

[0007] As a preferred embodiment, the upper end face of the slurry discharge shell is provided with an auxiliary interface, and an external pipe assembly is installed at the outer end of the slurry discharge shell, with a switch valve provided on the external pipe assembly.

[0008] As a preferred embodiment, the flushing pipe assembly includes a first vertical pipe, a horizontal bend pipe, and a second vertical pipe. The first vertical pipe and the second vertical pipe are respectively located at both ends of the horizontal bend pipe, and both ends of the horizontal bend pipe are respectively connected to the middle of the first vertical pipe and the second vertical pipe. The lower end of the first vertical pipe is sealed to an auxiliary interface, and the lower end of the second vertical pipe is sealed to an inlet shell. A mud inlet pipe with a control valve is installed on the side of the second vertical pipe.

[0009] As a preferred embodiment, a first control valve is installed on the first vertical pipe, and a second control valve is installed on the second vertical pipe.

[0010] As a preferred embodiment, the transverse bend includes a first bend section and a second bend section, which are located on both sides of the sewage tank assembly, and a third control valve and a fourth control valve are respectively installed on the first bend section and the second bend section.

[0011] As a preferred embodiment, the diversion liquid inlet assembly includes a central tube and a long bend, with the two ends of the long bend connected to the heads of the first vertical pipe and the second vertical pipe, respectively, and the central tube integrally formed and disposed in the middle of the long bend.

[0012] As a preferred embodiment, the sewage tank assembly includes a tank shell and a flip-openable tank cover. The tank cover is installed on the front end of the tank shell, and a sewage pipe is fixedly installed on the rear end of the tank shell.

[0013] Compared with existing technologies, the beneficial effects of this invention are as follows: The automatic flushing device for sludge screw pumps of this invention achieves automatic flushing of sludge screw pumps through a reasonable structural design. Furthermore, the use of both forward and reverse flushing modes ensures better cleaning of different parts of the sludge screw, effectively removing residual sludge from the pump and improving the pump's conveying efficiency and service life. The multiple control valves allow for flexible control of the flushing fluid's flow rate, direction, and path, enhancing the device's adaptability and flexibility. Simultaneously, the inclusion of a wastewater discharge tank facilitates the collection and discharge of wastewater and impurities generated during flushing, ensuring a clean and environmentally friendly flushing process. Furthermore, it reduces the workload of manual disassembly and cleaning, lowers labor intensity, and ensures continuous production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 yes Figure 1 The diagram shows the device without the external piping assembly installed.

[0016] Figure 3 yes Figure 2 A front view of the device shown;

[0017] Figure 4 This is a perspective view of the flushing pipe assembly and the sewage box assembly in an embodiment of this utility model.

[0018] Figure 5 yes Figure 4 Front view of the device shown.

[0019] In the diagram: 1. Screw pump body; 11. Main pump frame; 12. Drive motor; 13. Slurry inlet shell; 14. Horizontal shell; 15. Slurry discharge shell; 151. Auxiliary interface; 16. External pipe assembly; 161. Switch valve; 2. Flushing pipe assembly; 21. First vertical pipe; 211. First control valve; 22. Horizontal bend; 221. First bend section; 222. Second bend section; 223. Third control valve; 224. Fourth control valve; 23. Second vertical pipe; 231. Second control valve; 24. Slurry inlet pipe; 3. Diversion inlet assembly; 31. Middle pipe section; 32. Long bend; 4. Sewage tank assembly; 41. Tank shell; 411. Sewage pipe; 42. Tank cover. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0023] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0024] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0025] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0026] Example 1

[0027] Reference Figure 1 , Figure 2 and Figure 3As shown, an automatic flushing device for a sludge screw pump includes a screw pump body 1. The screw pump body 1 includes a main pump frame 11, a drive motor 12, an inlet shell 13, a horizontal shell 14, and a discharge shell 15. The drive motor 12 is fixedly installed on one side of the main pump frame 11, and the inlet shell 13 is fixedly installed on the other side of the main pump frame 11. The horizontal shell 14 is sealed and connected to the side of the inlet shell 13 away from the main pump frame 11, and a discharge screw connected to the drive motor 12 is rotatably installed in the horizontal shell 14. The discharge shell 15 is fixedly installed at the outer end of the horizontal shell 14, and a flushing pipe assembly 2 is installed above the discharge shell 15 and the inlet shell 13. A diversion liquid inlet assembly 3 is installed at the upper end of the flushing pipe assembly 2, and the diversion liquid inlet assembly 3 is sealed and fixedly connected to the flushing pipe assembly 2. A sewage discharge box assembly 4 is also fixedly installed in the middle of the flushing pipe assembly 2. The screw pump body 1 is composed of a main pump frame 11, a drive motor 12, an inlet shell 13, a horizontal shell 14, a discharge shell 15, and a discharge screw. A flushing pipe assembly 2 is installed above the discharge shell 15 and the inlet shell 13. A diversion inlet assembly 3 is installed at the upper end of the flushing pipe assembly 2. When flushing is required, the flushing liquid can be selectively introduced from different directions into the flushing pipe assembly 2 via the diversion inlet assembly 3, thus achieving the purpose of forward or reverse cleaning of the interior of the horizontal shell 14. A wastewater discharge tank assembly 4 is fixedly installed in the middle of the flushing pipe assembly 2 to facilitate the drainage of flushing wastewater. This structural design enables the device to achieve automatic flushing. The flushing liquid is introduced into the screw pump body 1 through the flushing pipe assembly 2 to flush away residual sludge inside the pump. The wastewater discharge tank assembly 4 collects and discharges the wastewater and impurities generated during flushing, effectively improving the cleanliness and service life of the screw pump. An auxiliary interface 151 is provided on the upper end face of the slurry discharge shell 15, and an external pipe assembly 16 is installed on the outer end of the slurry discharge shell 15. A switch valve 161 is provided on the external pipe assembly 16. The auxiliary interface 151 on the slurry discharge shell 15 facilitates connection with the flushing pipe assembly 2, ensuring that the flushing liquid can smoothly enter the slurry discharge shell 15 for flushing. The external pipe assembly 16 and the switch valve 161 facilitate the control of stable sludge discharge. During the flushing process, the switch valve 161 can be closed to prevent backflow after the flushing liquid and sludge mix, ensuring the flushing effect.

[0028] Reference Figure 4 and Figure 5As shown, the flushing pipe assembly 2 includes a first vertical pipe 21, a horizontal bend 22, and a second vertical pipe 23. The first vertical pipe 21 and the second vertical pipe 23 are respectively located at both ends of the horizontal bend 22, and both ends of the horizontal bend 22 are connected to the middle of the first vertical pipe 21 and the second vertical pipe 23, respectively. The lower end of the first vertical pipe 21 is sealed to the auxiliary interface 151, and the lower end of the second vertical pipe 23 is sealed to the slurry inlet shell 13. A slurry inlet pipe 24 with a control valve is installed on the side of the second vertical pipe 23. The structural design of the flushing pipe assembly 2 allows the flushing fluid to enter the screw pump body 1 from either the slurry inlet shell 13 or the slurry outlet shell 15, realizing either forward or two flushing modes. The slurry inlet pipe 24 facilitates the entry of sludge and has a control valve to control the sludge flow rate. The first vertical pipe 21 and the second vertical pipe 23 are sealed to the slurry outlet shell 15 and the slurry inlet shell 13, respectively, ensuring the sealing of the flushing process and preventing flushing fluid leakage. A first control valve 211 is installed on the first vertical pipe 21, and a second control valve 231 is installed on the second vertical pipe 23. The first control valve 211 and the second control valve 231 are respectively installed on the first vertical pipe 21 and the second vertical pipe 23. By controlling these two control valves, the flow rate and direction of the flushing fluid can be adjusted, allowing for targeted flushing of different parts of the screw pump according to actual needs, thereby improving flushing efficiency and effectiveness. The transverse bend 22 includes a first bend section 221 and a second bend section 222, which are located on opposite sides of the sewage tank assembly 4. A third control valve 223 and a fourth control valve 224 are respectively installed on the first bend section 221 and the second bend section 222. The transverse bend 22 is divided into a first bend section 221 and a second bend section 222, and the third control valve 223 and the fourth control valve 224 are respectively installed on the first bend section 221 and the second bend section 222, further precisely controlling the flow path of the flushing fluid. Different flushing paths can be selected according to the flushing situation to ensure that the flushed wastewater can be discharged from either side of the sewage discharge box group 4.

[0029] Reference Figure 5 As shown, the diversion inlet assembly 3 includes a central tube 31 and a long bend 32. The two ends of the long bend 32 are respectively connected to the heads of the first vertical pipe 21 and the second vertical pipe 23. The central tube 31 is integrally formed in the middle of the long bend 32. The structural design of the diversion inlet assembly 3 allows the flushing fluid to be introduced from the central tube 31 into the long bend 32. Then, the long bend 32 can selectively flow according to the pathway, thereby providing flushing fluid for both forward and reverse flushing.

[0030] Example 2

[0031] Reference Figure 1 , Figure 2 and Figure 3As shown, an automatic flushing device for a sludge screw pump includes a screw pump body 1. The screw pump body 1 includes a main pump frame 11, a drive motor 12, an inlet shell 13, a horizontal shell 14, and a discharge shell 15. The drive motor 12 is fixedly installed on one side of the main pump frame 11, and the inlet shell 13 is fixedly installed on the other side of the main pump frame 11. The horizontal shell 14 is sealed and connected to the side of the inlet shell 13 away from the main pump frame 11, and a discharge screw connected to the drive motor 12 is rotatably installed in the horizontal shell 14. The discharge shell 15 is fixedly installed at the outer end of the horizontal shell 14, and a flushing pipe assembly 2 is installed above the discharge shell 15 and the inlet shell 13. A diversion liquid inlet assembly 3 is installed at the upper end of the flushing pipe assembly 2, and the diversion liquid inlet assembly 3 is sealed and fixedly connected to the flushing pipe assembly 2. A sewage discharge box assembly 4 is also fixedly installed in the middle of the flushing pipe assembly 2.

[0032] Reference Figure 3 As shown, the sewage tank assembly 4 includes a tank shell 41 and a flip-openable tank cover 42. The tank cover 42 is installed on the front end of the tank shell 41, and a sewage pipe 411 is fixedly installed on the rear end of the tank shell 41. By designing the sewage tank assembly 4 into a structure of tank shell 41, tank cover 42, and sewage pipe 411, it is ensured that sewage entering the tank shell 41 can be discharged through the sewage pipe 411 during automatic flushing, while the tank cover 42 facilitates better cleaning of the inside of the tank shell 41 later.

[0033] In this embodiment, when the screw pump needs to be flushed, the control valve on the mud inlet pipe 24 and the switch valve 161 on the external pipe assembly 16 are closed. The flushing fluid is introduced into the diversion inlet assembly 3 through the central pipe section 31. When the first vertical pipe 21 is opened and the second vertical pipe 23 is closed, the flushing fluid flows into the first vertical pipe 21 through the long bend pipe 32. At the same time, the third control valve 223 and the second control valve 231 are closed to ensure that the flushing fluid can flow along the first vertical pipe 21 into the flushing discharge shell 15 and the horizontal shell 14. After flowing through the slurry inlet shell 13, it enters the second vertical pipe 23 and finally enters the sewage tank assembly 4 through the second bend pipe section 222 for discharge, thus achieving the purpose of reverse flushing.

[0034] When forward flushing is required, the control valve on the mud inlet pipe 24 and the switch valve 161 on the external pipe assembly 16 are closed. The flushing fluid is introduced into the diversion inlet assembly 3 through the central pipe section 31. When the first vertical pipe 21 is closed and the second vertical pipe 23 is opened, the flushing fluid flows into the second vertical pipe 23 through the long bend pipe 32, and then flows along the mud inlet shell 13 into the horizontal shell 14 and the mud outlet shell 15. Finally, it enters the sewage discharge box assembly 4 through the first vertical pipe 21 and the first bend pipe section 221 for discharge.

[0035] After rinsing is complete, close all control valves and open the switch valve 161 on the external pipe assembly 16 to continue sludge conveying. Simultaneously, the cover 42 of the discharge tank assembly 4 can be opened periodically to clean the inside of the tank.

[0036] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A sludge screw pump automatic flushing device comprising a screw pump body (1), characterized in that: Said screw pump body (1) includes main pump frame (11), drive motor (12), pulp inlet shell (13), horizontal shell (14) and pulp discharge shell (15), drive motor (12) is fixedly installed on one side of main pump frame (11), pulp inlet shell (13) is fixedly installed on the other side of main pump frame (11), horizontal shell (14) is sealingly connected on the side, away from main pump frame (11), of pulp inlet shell (13), and the discharge screw connected with drive motor (12) is rotatably installed in horizontal shell (14), pulp discharge shell (15) is fixedly installed on the outer end of horizontal shell (14), and flushing pipe group (2) is installed on the top of pulp discharge shell (15) and pulp inlet shell (13), the upper end of flushing pipe group (2) is provided with shunt liquid inlet group (3), shunt liquid inlet group (3) is sealingly and fixedly connected with flushing pipe group (2), and the middle part of flushing pipe group (2) is further provided with blowdown tank group (4).

2. The automatic flushing device for sludge screw pump according to claim 1, characterized in that: The upper end surface of the pulp discharge shell (15) is provided with an auxiliary interface (151), and the outer end of the pulp discharge shell (15) is provided with an external pipe group (16), and the external pipe group (16) is provided with a switch valve (161).

3. The automatic flushing device for sludge screw pump according to claim 2, characterized in that: The flushing pipe group (2) includes a first vertical pipe (21), a horizontal bend pipe (22) and a second vertical pipe (23), the first vertical pipe (21) and the second vertical pipe (23) are arranged on both ends of the horizontal bend pipe (22), and the two ends of the horizontal bend pipe (22) are connected with the middle part of the first vertical pipe (21) and the second vertical pipe (23) respectively, the lower end of the first vertical pipe (21) is sealingly connected with the auxiliary interface (151), the lower end of the second vertical pipe (23) is sealingly connected with the pulp inlet shell (13), and the second vertical pipe (23) is provided with a mud inlet pipe (24) with a control valve on the side.

4. The automatic flushing device for sludge screw pump according to claim 3, characterized in that: The first vertical pipe (21) is provided with a first control valve (211), and the second vertical pipe (23) is provided with a second control valve (231).

5. A device for automatic flushing of a screw pump for sludge according to claim 4, characterized in that The horizontal bend pipe (22) includes a first bend pipe (221) and a second bend pipe (222), the first bend pipe (221) and the second bend pipe (222) are arranged on both sides of the blowdown tank group (4), and the first bend pipe (221) and the second bend pipe (222) are respectively provided with a third control valve (223) and a fourth control valve (224).

6. A sludge screw pump automatic flushing device according to claim 5, characterized in that: The shunt liquid inlet group (3) includes a middle pipe (31) and a long bend pipe (32), the two ends of the long bend pipe (32) are connected with the head of the first vertical pipe (21) and the second vertical pipe (23) respectively, and the middle pipe (31) is integrally formed on the middle part of the long bend pipe (32).

7. The automatic flushing device for sludge screw pump according to claim 6, characterized in that: The blowdown tank group (4) includes a tank shell (41) and a tank cover (42) which can be opened by turning, the tank cover (42) is installed on the front end surface of the tank shell (41), and the rear end surface of the tank shell (41) is further provided with a blowdown pipe (411).

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