A screw pump sealing mechanism

Abstract

The utility model relates to screw -rod pump sealing technical field, specifically disclose a screw -rod pump sealing mechanism, including connecting rod, one end fixed connection of connecting rod has screw -rod, the surface of connecting rod is closely sleeved and has fixing piece and sealing element, the surface of screw -rod is sleeved and has storage spare, fixing piece and storage spare all are with the detachable connection of sealing element, the sealing element is in the clamping of skeleton seal ring, sealing pressure spare and O -ring, sealing pressure spare and skeleton seal ring close contact, the utility model discloses a material is filled in storage spare by the inlet pipe, and through O -ring, skeleton seal ring and sealing pressure spare carry out multilayer sealing to sealing element and storage spare, thereby can effectively avoid material back flow, make material along screw -rod descend through screw -rod rotation, in turn by the through -hole place of pipe head spouts, the whole can effectively avoid material back flow, thereby protect drive device and improve process stability.

Description

Technical Field

[0001] This utility model relates to the field of screw pump sealing technology, specifically a screw pump sealing mechanism. Background Technology

[0002] The dewatered sludge transport in urban wet wastewater treatment plants uses a single screw conveyor pump (referred to as a screw pump). Its main working parts are an eccentric helical screw (called the rotor) and a screw bushing (called the stator) with a double-helix inner surface.

[0003] In the prior art, in order to prevent backflow of the medium in the pump body, a packing seal mechanism is set between the rear end of the pump body and the motor. Commonly used packing materials include asbestos fabric, carbon fiber, rubber, flexible graphite and engineering plastics.

[0004] However, currently, packing seals are usually only sealed using a single layer or multiple layers stacked. In this case, when the screw pump is performing glue dispensing operations, the glue material will overflow from the packing seal mechanism at the rear end when it enters the screw pump during the conveying process, which will increase the load on the screw pump motor and make it easy to burn out, affecting the stability of the process. Utility Model Content

[0005] The purpose of this invention is to provide a screw pump sealing mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a screw pump sealing mechanism, including a connecting rod, one end of which is fixedly connected to a screw, a fixing component and a sealing component are tightly fitted onto the surface of the connecting rod, a storage component is fitted onto the surface of the screw, the fixing component and the storage component are detachably connected to the sealing component, and a skeleton sealing ring, a sealing pressure component and an O-ring are snapped into the sealing component, the sealing pressure component is in close contact with the skeleton sealing ring.

[0007] Preferably, the storage component is hollow, with an inlet pipe fixedly connected to its surface. The inlet pipe communicates with the interior of the storage component. An outlet pipe is fixedly connected to the end of the storage component away from the seal, and a pipe head is threaded to the other end of the outlet pipe.

[0008] Preferably, a driving device is fixedly connected to the surface of the fixing member, the output end of the driving device is fixedly connected to one end of the connecting rod, the other end of the connecting rod passes through the fixing member and the sealing member in sequence and is fixedly connected to the screw, and the other end of the screw passes through the storage member in sequence and is located in the discharge pipe, and the screw does not contact the discharge pipe.

[0009] Preferably, the end of the fixing member away from the driving device is in contact with the sealing member, and the other end of the sealing member is in contact with the storage member. The surfaces of the fixing member, the sealing member, and the storage member are all provided with aligned threaded holes. The fixing member is fixedly connected to the sealing member by fixing bolts and threaded holes, and the storage member is fixedly connected to the sealing member by fixing bolts and threaded holes.

[0010] Preferably, the inner side of the seal is provided with a sealing groove one, and the side of the seal that contacts the storage component is provided with a sealing groove two, and O-rings are sealed and engaged in both sealing groove one and sealing groove two.

[0011] Preferably, the skeleton sealing ring is slidably connected to the lower surface of the inner wall of the sealing element, the sealing pressure element is slidably connected to the upper surface of the inner wall of the sealing element, the upper end of the skeleton sealing ring is tightly inserted into the lower end of the sealing pressure element, the sealing pressure element is in close contact with the O-ring inside the sealing element, and another O-ring is in close contact with the surface of the storage element.

[0012] Compared with the prior art, this utility model fills the storage container with material through the feed pipe, and seals the sealing component and storage container with multiple layers of O-rings, skeleton sealing rings and sealing pressure components, which can effectively prevent material backflow. The material moves down along the screw by the rotation of the screw and is then sprayed out from the through hole of the pipe head. The whole process can effectively prevent material backflow, thereby protecting the drive device and improving process stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the sealing component connection of this utility model; Figure 4 This is a schematic diagram of the sealing component structure of this utility model.

[0014] In the diagram: 1. Drive unit; 2. Connecting rod; 3. Screw; 4. Fixing component; 5. Sealing component; 6. Storage component; 7. Discharge pipe; 8. Pipe head; 9. Skeleton sealing ring; 10. O-ring; 11. Sealing pressure component; 12. Inlet pipe; 13. Sealing groove one; 14. Sealing groove two; 15. Fixing bolt. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Please see Figures 1-4 This utility model provides a technical solution: a screw pump sealing mechanism, including a connecting rod 2, a driving device 1 fixedly connected to the surface of a fixing member 4, the driving device 1 can drive the connecting rod 2 to rotate, the output end of the driving device 1 is fixedly connected to one end of the connecting rod 2, the other end of the connecting rod 2 passes through the middle position of the fixing member 4 and the sealing member 5 and is fixedly connected to the screw 3. When the connecting rod 2 rotates, the screw 3 starts to rotate accordingly. When the screw 3 rotates in the discharge pipe 7, a sealing area is generated, which facilitates the extrusion of materials. The length of the screw 3 is greater than the length of the discharge pipe 7. The screw 3 does not contact the discharge pipe 7 and the pipe head 8, thereby avoiding friction damage caused by the screw 3 contacting other parts when rotating.

[0017] The storage unit 6 is hollow to facilitate the entry of adhesive raw materials. An inlet pipe 12 is fixedly connected to the surface of the storage unit 6, and the interior of the inlet pipe 12 is in communication with the interior of the storage unit 6. The end of the inlet pipe 12 away from the storage unit 6 can be connected to the discharge device of the adhesive material. At this time, the material can enter the storage unit 6 through the inlet pipe 12. The end of the storage unit 6 away from the seal 5 is fixedly connected to the discharge pipe 7. The adhesive material in the storage unit 6 can be ejected through the discharge pipe 7. The ejection rate of the material can be adjusted by controlling the rotation speed of the screw 3. The other end of the discharge pipe 7 is threadedly connected to the pipe head 8. The pipe head 8 can be quickly replaced and disassembled by rotating it. A through hole is opened at the tip of the surface of the pipe head 8. When the material enters the pipe head 8 through the discharge pipe 7, it can be ejected through the through hole.

[0018] The end of the fixing component 4 away from the drive device 1 contacts the sealing component 5. The fixing component 4 can fix and support the drive device 1. The other end of the sealing component 5 contacts the storage component 6. The surfaces of the fixing component 4, the sealing component 5 and the storage component 6 are all provided with aligned and through threaded holes. The threaded holes are evenly opened on their surfaces. The fixing component 4 is fixedly connected to the sealing component 5 by fixing bolts 15 and threaded holes. The storage component 6 is fixedly connected to the sealing component 5 by fixing bolts 15 and threaded holes. When the fixing component 4, the sealing component 5 and the storage component 6 are placed neatly, they can be quickly disassembled and assembled by rotating each fixing bolt 15. This can also improve the tightness of the connection between the three and prevent material from flowing out of the gaps.

[0019] Multiple grooves are provided on the inner side of the sealing element 5 to facilitate the installation of the skeleton sealing ring 9 and the sealing pressure element 11. A sealing groove 13 is also provided within each groove. A second sealing groove 14 is provided on the side of the sealing element 5 that contacts the storage element 6. O-rings 10 are securely engaged in both sealing groove 13 and sealing groove 14. The sealing ring in sealing groove 14 is in close contact with the storage element 6, thus sealing the connection between the storage element 6 and the sealing element 5 to prevent leakage. The skeleton sealing ring 9 is slidably connected to the lower surface of the inner wall of the sealing element 5, allowing for sealing at the connection point. Effective sealing prevents material leakage from gaps at the joint. The sealing pressure member 11 is slidably connected to the upper surface of the inner wall of the sealing member 5. The upper end of the skeleton sealing ring 9 is tightly inserted into the lower end of the sealing pressure member 11. The sealing pressure member 11 can apply pressure to the skeleton sealing ring 9. The sealing pressure member 11 is in close contact with the O-ring 10 inside the sealing member 5. When the fixing member 4 and the storage member 6 are fixedly connected, the fixing member 4 will continuously squeeze the sealing pressure member 11. At this time, the sealing pressure member 11 applies pressure to the O-ring 10 in contact with it, thereby improving the sealing effect of the O-ring 10.

[0020] In actual use, after the adhesive material is filled into the storage container 6 through the feed pipe 12, the material will come into contact with the screw 3. At this time, the material from the fixing part 4 to the storage container 6 will be jointly sealed by the O-ring 10, the skeleton sealing ring 9 and the sealing pressure part 11, which can effectively prevent the material from flowing back. Then, the connecting rod 2 is driven to rotate by the drive device 1, and the connecting rod 2 drives the screw 3 to rotate. When the screw 3 rotates, a sealing chamber is generated, which causes the material to move down along the screw 3. Then, the material in the tube head 8 is pressurized and sprayed out from the through hole of the tube head 8. Overall, the material can be effectively prevented from flowing back, thus protecting the drive device 1 and improving the process stability.

[0021] 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screw pump sealing mechanism, characterized in that: Includes a connecting rod (2), one end of which is fixedly connected to a screw (3). A fixing part (4) and a sealing part (5) are tightly fitted on the surface of the connecting rod (2). A storage part (6) is fitted on the surface of the screw (3). The fixing part (4) and the storage part (6) are detachably connected to the sealing part (5). A skeleton sealing ring (9), a sealing pressure part (11), and an O-ring (10) are snapped into the sealing part (5). The sealing pressure part (11) is in close contact with the skeleton sealing ring (9).

2. The screw pump sealing mechanism according to claim 1, characterized in that: The storage component (6) is hollow. An inlet pipe (12) is fixedly connected to the surface of the storage component (6). The inside of the inlet pipe (12) is connected to the inside of the storage component (6). An outlet pipe (7) is fixedly connected to one end of the storage component (6) away from the seal (5). A pipe head (8) is threaded to the other end of the outlet pipe (7).

3. The screw pump sealing mechanism according to claim 1, characterized in that: The surface of the fixing member (4) is fixedly connected to the driving device (1). The output end of the driving device (1) is fixedly connected to one end of the connecting rod (2). The other end of the connecting rod (2) passes through the fixing member (4) and the sealing member (5) in sequence and is fixedly connected to the screw (3). The other end of the screw (3) passes through the storage member (6) in sequence and is located in the discharge pipe (7). The screw (3) does not contact the discharge pipe (7).

4. The screw pump sealing mechanism according to claim 1, characterized in that: The end of the fixing member (4) away from the driving device (1) is in contact with the sealing member (5), and the other end of the sealing member (5) is in contact with the storage member (6). The surfaces of the fixing member (4), the sealing member (5) and the storage member (6) are all provided with aligned threaded holes. The fixing member (4) is fixedly connected to the sealing member (5) by fixing bolts (15) and threaded holes, and the storage member (6) is fixedly connected to the sealing member (5) by fixing bolts (15) and threaded holes.

5. The screw pump sealing mechanism according to claim 1, characterized in that: The inner side of the sealing element (5) is provided with a sealing groove (13), and the side of the sealing element (5) that contacts the storage element (6) is provided with a sealing groove (14). Both the sealing groove (13) and the sealing groove (14) are sealed with O-rings (10).

6. The screw pump sealing mechanism according to claim 1, characterized in that: The skeleton sealing ring (9) is slidably connected to the lower surface of the inner wall of the sealing member (5), the sealing pressure member (11) is slidably connected to the upper surface of the inner wall of the sealing member (5), the upper end of the skeleton sealing ring (9) is tightly inserted into the lower end of the sealing pressure member (11), the sealing pressure member (11) is in close contact with the O-ring (10) inside the sealing member (5), and another O-ring (10) is in close contact with the surface of the storage member (6).

Images