Spiral propeller combined single-screw pump

Abstract

The utility model relates to the technical field of screw pumps, in particular to a spiral propeller combined single-screw pump which comprises a main pipe, a feeding pipe is installed at the top of the main pipe, a connecting cavity, a propelling cavity and a sealing cavity are arranged in the main pipe from left to right, a middle shaft is installed in the propelling cavity, and a sealing ring is installed in the sealing cavity. A crushing assembly is installed outside the middle shaft, the crushing assembly is used for crushing large impurities in the propelling cavity, the crushing assembly comprises blades, connecting rods and scraping plates, the blades are installed outside the middle shaft, the connecting rods are installed between the blades, and the scraping plates are installed at the ends, away from the middle shaft, of the connecting rods; compared with an existing spiral propeller combined single-screw pump, through the design of the blades and the rolling balls, shearing of impurities in the main pipe can be improved, meanwhile, rapid connection of the rotor and the intermediate shaft is facilitated, and the overall practicability is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw pumps, in particular to a single screw pump combined with a spiral propeller. Background Art

[0002] A screw pump is a positive displacement rotor pump that mainly relies on the volume change between the pump body and the screw to transport liquid or pressurize the liquid. The screw pump has the advantages of simple structure, safe and reliable operation, easy use and maintenance, continuous and uniform liquid discharge, and stable pressure. It is suitable for transporting high-viscosity media such as sewage, sludge, oil, and fruit pulp in food production.

[0003] At present, in the existing technology, a sealed chamber is formed by meshing between a screw and a fixed bushing (stator), thereby realizing the suction and discharge of liquid. However, for liquid-solid mixtures containing solid particles with larger diameters or longer fibers, such as jams produced in jam factories or mixtures containing livestock manure in animal husbandry, the screw is easily entangled or blocked due to its long fibers and large particles.

[0004] Therefore, it is particularly important to improve the existing screw propeller combined single screw pump, design a new screw propeller combined single screw pump to solve the above technical defects, and improve the practicality of the overall screw propeller combined single screw pump. Utility Model Content

[0005] The utility model aims to provide a single screw pump combined with a screw propeller to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A single screw pump with a screw propeller, comprising a main pipe, a feed pipe is installed on the top of the main pipe, a connecting chamber, a propulsion chamber and a sealing chamber are arranged inside the main pipe from left to right, an intermediate shaft is installed inside the propulsion chamber, and a crushing assembly is installed outside the intermediate shaft;

[0008] The crushing assembly is used for crushing large impurities inside the propulsion chamber.

[0009] As a preferred solution of the utility model, the crushing assembly includes blades, connecting rods and scrapers, the blades are installed outside the intermediate shaft, the connecting rods are installed between the blades, and the scrapers are installed at one end of the connecting rod away from the intermediate shaft.

[0010] As a preferred solution of the utility model, a main shaft is installed inside the connecting cavity, a bearing is arranged on the outer sleeve of the main shaft, a universal joint is installed at one end of the main shaft close to the intermediate shaft, and the intermediate shaft is connected to the main shaft through the universal joint.

[0011] As a preferred solution of the utility model, a rotor is installed inside the sealing chamber, a sliding sleeve is installed at the connection between the intermediate shaft and the rotor, and the rotor is connected to the intermediate shaft through the sliding sleeve.

[0012] As a preferred solution of the utility model, a receiving groove is provided inside the sliding sleeve, a spring is sleeved inside the receiving groove and outside the intermediate shaft, and a retaining ring is installed outside the intermediate shaft and inside the receiving groove.

[0013] As a preferred solution of the utility model, a placement groove is provided at one end of the intermediate shaft close to the rotor, and a clamping block is installed between one end of the rotor and the outside of the placement groove.

[0014] As a preferred solution of the utility model, a slot is provided inside the intermediate shaft on the side close to the rotor, a ball is installed inside the slot, and an extrusion block is provided inside the sliding sleeve at a position corresponding to the slot.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] In the utility model, liquid is poured into the feed pipe from the inside, flows to the inside of the connecting cavity by gravity, and one end of the main shaft is connected to the motor, so that the main shaft drives the intermediate shaft to rotate. When the liquid contains solid particles or a liquid-solid mixture of longer fibers, the blades are driven to rotate after the intermediate shaft rotates, so as to achieve its spiral rotation, thereby cutting the solid particles or fibers. At the same time, the connecting rod will rotate with the intermediate shaft, so as to complete the scraper scraping the inner wall of the propulsion cavity. The cut solid particles are discharged to the inside of the sealed cavity, which effectively prevents the internal blockage of the main pipe. The main shaft drives the universal joint to rotate, so as to achieve the cyclic rotation of the intermediate shaft, and at the same time, it swings up and down to achieve the maximum angle deviation, so as to fully stir the liquid inside the propulsion cavity. The rotor is driven to rotate inside the sealed cavity by the intermediate shaft, and then the rotor is driven to connect and mesh inside the sealed cavity, so as to achieve uniform axial movement without changing the internal volume of the sealed cavity. The liquid will continuously move axially inside the sealed cavity to discharge the liquid out of the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the crushing component of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the sliding sleeve of the utility model.

[0020] In the figure: 1. main pipe; 2. feed pipe; 3. connecting chamber; 4. propulsion chamber; 5. sealing chamber; 6. intermediate shaft; 7. crushing assembly; 701. blade; 702. connecting rod; 703. scraper; 8. main shaft; 9. bearing; 10. universal joint; 11. rotor; 12. sliding sleeve; 13. receiving groove; 14. spring; 15. retaining ring; 16. placement groove; 17. block; 18. slot; 19. rolling ball; 20. extrusion block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Example:

[0023] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0024] A single screw pump with a screw propeller comprises a main pipe 1, a feed pipe 2 is installed on the top of the main pipe 1, a connecting chamber 3, a propulsion chamber 4 and a sealing chamber 5 are arranged inside the main pipe 1 from left to right, an intermediate shaft 6 is installed inside the propulsion chamber 4, and a crushing assembly 7 is installed outside the intermediate shaft 6;

[0025] The crushing assembly 7 is used to crush large impurities inside the propulsion chamber 4.

[0026] For further information, see Figure 1 and Figure 2In this embodiment, the crushing assembly 7 includes a blade 701, a connecting rod 702 and a scraper 703. The blade 701 is installed on the outside of the intermediate shaft 6, the connecting rod 702 is installed between the blades 701, and the scraper 703 is installed at the end of the connecting rod 702 away from the intermediate shaft 6. The spiral pump has small loss, good economic performance, high and uniform pressure, high speed, low noise and vibration, and is used in occasions where other forms of pumps are difficult to transport. It is mainly used to transport viscous media. By pouring liquid from the inside of the feed pipe 2, it flows to the inside of the connecting chamber 3 through gravity factors. By connecting one end of the main shaft 8 to the motor, the main shaft 8 drives the intermediate shaft 6 to rotate. When the liquid contains solid particles or a liquid-solid mixture of longer fibers, the intermediate shaft 6 rotates, driving the blade 701 to rotate, thereby achieving its spiral rotation, thereby cutting the solid particles or fibers. At the same time, the connecting rod 702 will rotate with the intermediate shaft 6, so as to complete the scraping of the scraper 703 on the inner wall of the propulsion chamber 4, and effectively prevent the internal blockage of the main pipe 1 by discharging the cut solid particles into the interior of the sealing chamber 5.

[0027] Among them, see Figure 1 In this embodiment, a main shaft 8 is installed inside the connecting chamber 3, a bearing 9 is arranged on the outer sleeve of the main shaft 8, a universal joint 10 is installed at the end of the main shaft 8 close to the intermediate shaft 6, the intermediate shaft 6 is connected to the main shaft 8 through the universal joint 10, and the universal joint 10 is installed at the connection between the intermediate shaft 6 and the main shaft 8. The universal joint 10 is driven to rotate by the main shaft 8, so as to realize the circular rotation of the intermediate shaft 6 and the up and down swing at the same time, realize the maximum angle deviation, and fully stir the liquid inside the propulsion chamber 4.

[0028] Furthermore, please see Figure 1 , Figure 2 and Figure 3 In this embodiment, a rotor 11 is installed inside the sealed chamber 5, and a sliding sleeve 12 is installed at the connection between the intermediate shaft 6 and the rotor 11. The rotor 11 is connected to the intermediate shaft 6 through the sliding sleeve 12. The intermediate shaft 6 drives the rotor 11 to rotate inside the sealed chamber 5, and then drives the rotor 11 to connect and engage inside the sealed chamber 5, so that the sealed chamber 5 can move axially at a uniform speed without changing its internal volume, and the liquid can move continuously along the axial direction inside the sealed chamber 5.

[0029] For further information, see Figure 3In this embodiment, a receiving groove 13 is provided inside the sliding sleeve 12, a spring 14 is provided inside the receiving groove 13 and outside the intermediate shaft 6, a retaining ring 15 is installed outside the intermediate shaft 6 and inside the receiving groove 13, a placement groove 16 is provided at one end of the intermediate shaft 6 close to the rotor 11, a clamping block 17 is installed at one end of the rotor 11 and outside the placement groove 16, a clamping groove 18 is provided inside the side of the intermediate shaft 6 close to the rotor 11, a rolling ball 19 is installed inside the clamping groove 18, and an extrusion block 20 is provided at a position corresponding to the clamping groove 18 inside the sliding sleeve 12. When the rotor needs to be adjusted When replacing 11, the sliding sleeve 12 is pushed to the left, so that the spring 14 can store energy through expansion and contraction, so that the sliding sleeve 12 fixes the rotor 11, and the new rotor 11 is inserted into the sliding sleeve 12, so that the clamping block 17 is clamped into the inside of the placement groove 16, so that the intermediate shaft 6 and the rotor 11 are connected, and the sliding sleeve 12 is loosened, and the sliding sleeve 12 is restored to its original position through the expansion and contraction energy storage of the spring 14, so that the squeezing block 20 squeezes the ball 19, so that the ball 19 falls into the inside of the clamping groove 18, and the rotor 11 and the intermediate shaft 6 are connected as a whole, which is convenient for disassembly and assembly.

[0030] In this embodiment, the implementation scenario is specifically as follows: liquid is poured into the feed pipe 2, and flows to the inside of the connecting chamber 3 due to gravity. One end of the main shaft 8 is connected to the motor, so that the main shaft 8 drives the intermediate shaft 6 to rotate. When the liquid contains solid particles or a liquid-solid mixture of longer fibers, the intermediate shaft 6 rotates, driving the blades 701 to rotate, thereby achieving its spiral rotation, thereby cutting the solid particles or fibers. At the same time, the connecting rod 702 will rotate with the intermediate shaft 6 to complete the scraping of the scraper 703 on the inner wall of the propulsion chamber 4. The cut solid particles are discharged to the inside of the sealing chamber 5, effectively preventing the internal blockage of the main pipe 1. The main shaft 8 drives the universal joint 10 to rotate, thereby realizing the circular rotation of the intermediate shaft 6, and swinging up and down at the same time to achieve the maximum angle offset, so as to fully propel the liquid inside the propulsion chamber 4. The rotor 11 is stirred, and the intermediate shaft 6 drives the rotor 11 to rotate inside the sealed chamber 5, and then drives the rotor 11 to connect and mesh inside the sealed chamber 5, so that the internal volume of the sealed chamber 5 remains unchanged and the axial movement is performed at a uniform speed. The liquid will continuously move axially inside the sealed chamber 5. When the rotor 11 needs to be replaced, the sliding sleeve 12 is pushed to the left, so that the sliding sleeve 12 can store energy through the expansion and contraction of the spring 14, so that the sliding sleeve 12 fixes the rotor 11, and the new rotor 11 is inserted into the sliding sleeve 12, so that the clamping block 17 is clamped into the inside of the placement groove 16, so that the intermediate shaft 6 and the rotor 11 are connected, and the sliding sleeve 12 is loosened, and the sliding sleeve 12 is restored to its original position through the expansion and contraction energy storage of the spring 14, so that the extrusion block 20 can squeeze the ball 19, so that the ball 19 falls into the inside of the clamping groove 18, so that the rotor 11 and the intermediate shaft 6 are connected as a whole, which is convenient for disassembly and assembly.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw propeller combined single screw pump, comprising a main pipe (1), characterized in that: A feed pipe (2) is installed on the top of the main pipe (1), and a connecting chamber (3), a propulsion chamber (4) and a sealing chamber (5) are respectively arranged inside the main pipe (1) from left to right. An intermediate shaft (6) is installed inside the propulsion chamber (4), and a crushing assembly (7) is installed outside the intermediate shaft (6); The crushing assembly (7) is used to crush large impurities inside the propulsion chamber (4).

2. A screw propeller combined single screw pump according to claim 1, characterized in that: The crushing assembly (7) comprises a blade (701), a connecting rod (702) and a scraper (703); the blade (701) is installed on the outside of the intermediate shaft (6); the connecting rod (702) is installed between the blades (701); and the scraper (703) is installed on one end of the connecting rod (702) away from the intermediate shaft (6).

3. A screw propeller combined single screw pump according to claim 1, characterized in that: A main shaft (8) is installed inside the connecting cavity (3), a bearing (9) is provided on the outer sleeve of the main shaft (8), a universal joint (10) is installed at one end of the main shaft (8) close to the intermediate shaft (6), and the intermediate shaft (6) is connected to the main shaft (8) via the universal joint (10).

4. A screw propeller combined single screw pump according to claim 1, characterized in that: A rotor (11) is installed inside the sealed chamber (5), a sliding sleeve (12) is installed at the connection between the intermediate shaft (6) and the rotor (11), and the rotor (11) is connected to the intermediate shaft (6) via the sliding sleeve (12).

5. A screw propeller combined single screw pump according to claim 4, characterized in that: The sliding sleeve (12) is provided with a receiving groove (13) inside, a spring (14) is sleeved inside the receiving groove (13) and outside the intermediate shaft (6), and a retaining ring (15) is installed outside the intermediate shaft (6) and inside the receiving groove (13).

6. A screw propeller combined single screw pump according to claim 5, characterized in that: A placement groove (16) is provided at one end of the intermediate shaft (6) close to the rotor (11), and a clamping block (17) is installed between one end of the rotor (11) and the outside of the placement groove (16).

7. A screw propeller combined single screw pump according to claim 6, characterized in that: A slot (18) is provided inside the intermediate shaft (6) at a side close to the rotor (11), a rolling ball (19) is installed inside the slot (18), and an extrusion block (20) is provided inside the sliding sleeve (12) at a position corresponding to the slot (18).

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