Marine single-screw pump structure

Abstract

The utility model relates to the technical field of single-screw pumps, and discloses a marine single-screw pump structure which comprises a motor, one end of an output shaft of the motor is fixedly connected with a speed reducer, one end of the speed reducer is provided with a protective shell, one side of the protective shell is fixedly provided with a bearing seat, one end of the bearing seat is connected with a feeding pipe, and the other end of the bearing seat is connected with a discharging pipe. One end of the feeding pipe is fixedly connected with a stator, and one end of the stator is provided with a discharging port. The base is of a multi-module structure, the multi-module base supports a motor, a speed reducer, a discharging pipe, a stator and other structures, the multi-module base is connected in a guiding mode through the guide rods, and when the interior of the pump body needs to be cleaned and disassembled, the correspondingly-supported module base can move along the guide rods; the distance is increased so that cleaning can be conveniently carried out, when cleaning is completed and assembling is carried out, sliding resetting can be carried out along the guide rods, then bolts and studs are installed for fixing, and assembling is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to single screw pump technical field, concretely is a marine single screw pump structure. BACKGROUND

[0002] Single screw pump belongs to rotor type volume pump, it is relied on screw rod and bushing intermeshing in suction chamber and discharge chamber produces volume change to transport liquid. It is a kind of intermeshing closed screw pump, and main working parts are composed of bushing (stator) with double-head spiral cavity and single-head spiral screw rod (rotor) intermeshing in stator cavity.

[0003] For example, a novel magnetic coupling single screw pump disclosed in Chinese patent CN220979853U, including shell, motor and magnetic coupler, the shell is equipped with stator and rotor, the shell is equipped with import cavity and outlet, the import cavity is equipped with the transmission shaft connected with one end of the rotor, the motor is connected with one end of the transmission shaft through the magnetic coupler, the transmission shaft is flexible rod, the other end of the flexible rod is connected with one end of the rotor through flexible coupling. Flexible coupling, flexible rod are used to replace the mechanical universal joint in traditional screw pump, flexible coupling and flexible rod are connected through keyway, flexible coupling can play a good eccentric transmission effect, and flexible rod is lighter than universal joint, can be better axially positioned in the use of magnetic coupling device, the use of flexible coupling and flexible rod can effectively avoid the problem of corrosion and pollution of transported liquid, and the sealing is reliable. The traditional single screw pump is composed of stator, feed pipe, speed reducer, motor and the like, needs to be disassembled regularly to clean the inside, when assembling after cleaning, the connecting parts are accurately matched, and the bolts and studs are connected and fixed after position matching. But the overall quality of each structure is heavy, and it needs to be debugged many times during accurate matching of the connecting parts, greatly increases the assembly difficulty, consumes a lot of manpower and time, so a marine single screw pump structure is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] (I) Technical problem solved

[0005] In view of the defects of the prior art, the utility model provides a marine single screw pump structure, which has the advantages of facilitating the assembly of the single screw pump and solving the problem of high assembly difficulty of the traditional single screw pump.

[0006] (II) Technical scheme

[0007] To achieve the above-mentioned purpose of facilitating the assembly of the single screw pump, the utility model provides the following technical scheme: a marine single screw pump structure, comprising:

[0008] The motor is provided with a speed reducer at one end of the output shaft, the speed reducer is provided with a protective shell at one end, a bearing seat is fixedly installed on one side of the protective shell, a feeding pipe is connected at one end of the bearing seat, a stator is fixedly connected at one end of the feeding pipe, and a discharge port is arranged at one end of the stator, and a circular supporting block is arranged on the outer surface of the discharge port.

[0009] A transmission shaft is arranged in the bearing seat and fixedly connected with the output shaft of the speed reducer at one end, an intermediate shaft is arranged in the feeding pipe, a rotor is arranged in the stator, a stator inner wall is arranged on the inner wall of the stator, the rotor and the stator inner wall are in meshing engagement, and the two ends of the intermediate shaft are connected with the transmission shaft and the stator through the universal joints arranged at the two ends.

[0010] The base is a multi-module structure and arranged at the bottom of the motor, the speed reducer, the bearing seat, the feeding pipe and the stator, a guide rod is arranged in the multi-module structure for connection, and a limiting assembly is arranged between adjacent modules.

[0011] Preferably, the limiting assembly comprises a connecting block arranged at one end of the module and a connecting groove arranged at the other end of the module, and the connecting block and the connecting groove are matched.

[0012] Preferably, connecting holes are arranged at the outer surfaces of the two ends of the connecting block, and fixed pins are arranged on the two sides of the module, and the output shaft of one end of the fixed pin is matched with the connecting hole.

[0013] Preferably, the stator is fixedly connected with the feeding pipe through a nut and a stud, the feeding pipe is fixedly connected with the bearing seat through a bolt, and the outer surfaces of the stud and the bolt are both sleeved with a gasket.

[0014] Preferably, an oil mark is arranged on the outer surface of the top end of the bearing seat, a packing seal is arranged at the connecting position of one end of the feeding pipe, a universal joint protective sleeve is sleeved on the outer surface of the universal joint, and a pin is inserted into the outer surface of the universal joint protective sleeve.

[0015] Preferably, an embedded bearing transparent cover is fixedly installed at one end of the transmission shaft in the bearing seat, an o-shaped rubber sealing ring is sleeved on the inner wall of the embedded bearing transparent cover, a shaft coupling is installed on the inner wall of the bearing seat, and an angular contact ball bearing and a flat key are arranged in the shaft coupling.

[0016] (Three) beneficial effects

[0017] Compared with the prior art, the single-screw pump structure for ships has the following beneficial effects:

[0018] The base is of a multi-module structure, the multi-module base supports structures such as the motor, the speed reducer, the discharge pipe and the stator, the multi-module bases are connected in a guided mode by guide rods, when the pump body needs to be cleaned and disassembled, the corresponding module base can be moved along the guide rod, the distance is pulled apart to facilitate cleaning, and when the cleaning is completed, the module base is slid along the guide rod and is reset, then the bolt and the stud are installed to fix the module base, thereby facilitating assembly. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole front view of the utility model;

[0020] Figure 2 It is a whole top view of the utility model;

[0021] Figure 3 It is a whole sectional view of the utility model;

[0022] Figure 4 It is a whole side view of the utility model;

[0023] Figure 5 It is a structure schematic view of the base of the utility model;

[0024] Figure 6 It is an explosion view of the structure of the base of the utility model.

[0025] In the drawing: 1, discharge port; 2, stator; 3, feed pipe; 4, packing seal; 5, bearing seat; 6, protective shell; 7, speed reducer; 8, motor; 9, base; 91, connecting block; 92, connecting hole; 93, connecting groove; 94, guide rod; 95, fixing pin; 10, gasket; 11, nut; 12, stud; 13, bolt; 14, oil mark; 15, circular support block; 16, rotor; 17, stator inner wall; 18, universal joint; 19, universal joint protective sleeve; 20, intermediate shaft; 21, pin; 22, transmission shaft; 23, embedded bearing cover; 24, o-shaped rubber sealing ring; 25, angular contact ball bearing; 26, shaft coupling; 27, flat key. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Please refer to Figures 1-6 The utility model provides the following technical scheme: a marine single screw pump structure, comprising:

[0028] In this example, the output shaft of the motor 8 is fixedly connected with a speed reducer 7, one end of the speed reducer 7 is provided with a protective shell 6, one side of the protective shell 6 is fixedly installed with a bearing seat 5, one end of the bearing seat 5 is connected with a feeding pipe 3, one end of the feeding pipe 3 is fixedly connected with a stator 2, one end of the stator 2 is provided with a discharge port 1, and the outer surface of the discharge port 1 is sleeved with a circular support block 15.

[0029] A transmission shaft 22 is arranged in the interior of the bearing seat 5, one end of the transmission shaft 22 is fixedly connected with the output shaft of the speed reducer 7, the interior of the feeding pipe 3 is provided with an intermediate shaft 20, the interior of the stator 2 is provided with a rotor 16, the inner wall of the stator 2 is provided with a stator inner wall 17, the rotor 16 and the stator inner wall 17 are mutually engaged, and the two ends of the intermediate shaft 20 are respectively connected with the transmission shaft 22 and the stator 2 through the arranged universal joint 18; one end of the stator 2 is fixedly connected with the feeding pipe 3 through the nut 11 and the stud 12, one end of the feeding pipe 3 is fixedly connected with the bearing seat 5 through the bolt 13, and the outer surfaces of the stud 12 and the bolt 13 are both sleeved with the gasket 10.

[0030] Among them, the top end of the bearing seat 5 is installed with an oil mark 14, the end of the feeding pipe 3 is provided with a packing seal 4, the outer surface of the universal joint 18 is sleeved with a universal joint protection sleeve 19, and the outer surface of the universal joint protection sleeve 19 is inserted with a pin 21.

[0031] It should also be pointed out in this embodiment that an embedded bearing transparent cover 23 is fixedly installed at one end of the transmission shaft 22 in the interior of the bearing seat 5, and an o-shaped rubber sealing ring 24 is sleeved on the inner wall of the embedded bearing transparent cover 23, a shaft coupling 26 is installed on the inner wall of the bearing seat 5, and an angular contact ball bearing 25 and a flat key 27 are arranged in the interior of the shaft coupling 26.

[0032] In this example, the base 9 is a multi-module structure, and the base 9 is arranged at the bottom end of the motor 8, the speed reducer 7, the bearing seat 5, the feeding pipe 3 and the stator 2. A guide rod 94 is arranged in the multi-module structure for connection, and a limiting assembly is arranged between adjacent modules. The limiting assembly includes a connecting block 91 arranged at one end of the module and a connecting groove 93 opened at the other end of the module, and the connecting block 91 and the connecting groove 93 are matched. Connecting holes 92 are opened at the outer surfaces of the two ends of the connecting block 91, and fixed pins 95 are installed on the two sides of the module, and one end of the fixed pin 95 is matched with the connecting hole 92. Rotating the fixed pin 95 which limits the two sides of the module base releases the limitation of the fixed pin 95 on the module base by separating one end of the fixed pin 95 from the connecting hole 92. The module base corresponding to the support can be moved along the guide rod 94, the distance is pulled apart for easy cleaning, and after cleaning, the module base can be slid along the guide rod 94 for repositioning.

[0033] The working principle of the embodiment is as follows:

[0034] In use, the electric motor 8 is started, and the electric motor 8 drives the transmission shaft 22 to rotate through the speed reducer 7, the two ends of the intermediate shaft 20 are connected with the transmission shaft 22 and the rotor 16 through the universal joints 18 respectively, the rotor 16 is driven to rotate by the intermediate shaft, when the rotor 16 rotates, the chamber volume of the feeding pipe 3 gradually increases to form negative pressure, the medium is sucked in, the closed chamber moves uniformly along the axial direction, the medium is stably pushed to the discharge end and is not stirred, then the chamber volume decreases, and the medium is extruded and discharged from the discharge port of the pump body;

[0035] When it is necessary to clean and disassemble the inside of the pump body, the bolts 13 and the studs 12 of the assembly connecting part are disassembled, then the fixing pins 95 on both sides of the module base are rotated, one end of the fixing pin 95 is separated from the connecting hole 92 to release the limitation of the module base, the corresponding supporting module base can be moved along the guide rod 94, the distance is pulled apart to facilitate cleaning, after cleaning is completed, the module base is repositioned by sliding along the guide rod 94, the fixing pin 95 is rotated inward to fix the module base, then the bolts 13 and the studs 12 are installed and fixed, which is convenient for assembly.

[0036] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article, or apparatus. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus including the element.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A marine single screw pump structure, characterized by, Include: The output shaft of the motor (8) is fixedly connected with a reducer (7), one end of the reducer (7) is provided with a protective shell (6), one side of the protective shell (6) is fixedly installed with a bearing seat (5), one end of the bearing seat (5) is connected with a feeding pipe (3), one end of the feeding pipe (3) is fixedly connected with a stator (2), one end of the stator (2) is provided with a discharge port (1), the outer surface of the discharge port (1) is sleeved with a circular support block (15); The transmission shaft (22) is arranged in the bearing seat (5), and one end of the transmission shaft (22) is fixedly connected with the output shaft of the reducer (7), the inside of the feeding pipe (3) is provided with an intermediate shaft (20), the inside of the stator (2) is provided with a rotor (16), the inner wall of the stator (2) is provided with a stator inner wall (17), the rotor (16) and the stator inner wall (17) are engaged with each other, and the two ends of the intermediate shaft (20) are connected with the transmission shaft (22) and the stator (2) through the universal joint (18) arranged therebetween; The base (9) is a multi-module structure, and the base (9) is arranged at the bottom of the motor (8), the reducer (7), the bearing seat (5), the feeding pipe (3) and the stator (2), a guide rod (94) is arranged in the multi-module structure for connection, and a limiting assembly is arranged between adjacent modules.

2. A marine single screw pump structure according to claim 1, characterized in that: The limiting assembly comprises a connecting block (91) arranged at one end of the module and a connecting groove (93) formed at the other end of the module, and the connecting block (91) and the connecting groove (93) are matched.

3. A marine single screw pump structure according to claim 2, characterized in that: Connecting holes (92) are formed in the outer surfaces of the two ends of the connecting block (91), and fixed pins (95) are installed on the two sides of the module, and one end of the output shaft of the fixed pin (95) is matched with the connecting hole (92).

4. A marine single screw pump structure according to claim 1, characterized in that: One end of the stator (2) is fixedly connected with the feeding pipe (3) through a nut (11) and a stud (12), one end of the feeding pipe (3) is fixedly connected with the bearing seat (5) through a bolt (13), and the outer surfaces of the stud (12) and the bolt (13) are sleeved with a gasket (10).

5. A marine single screw pump structure according to claim 1, characterized in that: An oil mark (14) is installed on the top outer surface of the bearing seat (5), a packing seal (4) is arranged at the connection of one end of the feeding pipe (3), a universal joint protection sleeve (19) is sleeved on the outer surface of the universal joint (18), and a pin (21) is inserted into the outer surface of the universal joint protection sleeve (19).

6. A marine single screw pump structure according to claim 1, characterized in that: An embedded bearing transparent cover (23) is fixedly installed at one end of the transmission shaft (22) in the bearing seat (5), an o-shaped rubber sealing ring (24) is sleeved on the inner wall of the embedded bearing transparent cover (23), a shaft coupling (26) is installed on the inner wall of the bearing seat (5), and an angular contact ball bearing (25) and a flat key (27) are arranged in the shaft coupling (26).

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