阅读说明：本技术 一种自吸式离心泵 (Self-suction centrifugal pump ) 是由 黄文博 聂敏 王梦蝶 于 2019-12-17 设计创作，主要内容包括：本发明公开了一种自吸式离心泵,包括泵壳,所述泵壳的尾部固定安装有中座,所述泵壳的内部通过尾部的主轴旋转安装有叶轮,所述叶轮的前端固定连接有诱导轮,所述中座的内部设有与主轴固定连接的电机轴,所述泵壳正面的外侧边通过双头螺柱固定安装有后压盖,所述泵壳正面的中央位置处通过第一安装螺栓固定安装有前压盖,所述前压盖的中央位置处设有吸液口,所述泵壳一侧的顶部固定连接有连通的排液口。本发明在已有离心泵的基础上整合一个螺杆式诱导轮,是一种输送粘度达500mPas的自吸泵,使得离心泵的工作效率更高,所述能够降低工作时的噪音。(The invention discloses a self-priming centrifugal pump which comprises a pump shell, wherein a middle seat is fixedly arranged at the tail part of the pump shell, an impeller is rotatably arranged in the pump shell through a main shaft at the tail part, an inducer is fixedly connected to the front end of the impeller, a motor shaft fixedly connected with the main shaft is arranged in the middle seat, a rear gland is fixedly arranged on the outer side edge of the front surface of the pump shell through a stud, a front gland is fixedly arranged at the central position of the front surface of the pump shell through a first mounting bolt, a liquid suction port is arranged at the central position of the front gland, and a communicated liquid discharge port is fixedly connected to the top of one side of the pump shell. The invention integrates a screw type inducer on the basis of the existing centrifugal pump, and is a self-priming pump for conveying the viscosity of 500mPas, so that the working efficiency of the centrifugal pump is higher, and the noise during working can be reduced.)

1. A self-priming centrifugal pump comprises a pump shell (5), and is characterized in that: the utility model discloses a pump case, including pump case (5), afterbody fixed mounting have well seat (2), the inside of pump case (5) is through main shaft (3) swivelling joint of afterbody have impeller (6), the front end fixedly connected with inducer (8) of impeller (6), the inside of well seat (2) be equipped with main shaft (3) fixed connection's motor shaft (1), the positive outside limit of pump case (5) has back gland (7) through stud (14) fixed mounting, the positive central point department of pump case (5) has preceding gland (9) through first mounting bolt (10) fixed mounting, the central point department of preceding gland (9) is equipped with and inhales liquid mouth (18), the top fixedly connected with leakage fluid dram (17) of intercommunication of pump case (5) one side.

2. The self-priming centrifugal pump of claim 1, wherein: the pump shell (5) is fixedly connected with the middle seat (2) through a machine seal (4), and the middle seat (2) is fixedly connected with the machine seal (4) through a second mounting bolt (15).

3. The self-priming centrifugal pump of claim 1, wherein: the inner side of the tail of the middle seat (2) is provided with a main shaft lock sleeve (16) around the motor shaft (1), and the outer side of the middle seat (2) at the position of the main shaft lock sleeve (16) is fixedly provided with a third mounting bolt (19).

4. The self-priming centrifugal pump of claim 1, wherein: the front of pump case (5) above imbibition mouth (18) is through clamp (12) fixed mounting have front draft tube (11), fixed mounting has back honeycomb duct (13) with leakage fluid dram (17) intercommunication on the pump case (5) of front draft tube (11) rear side.

5. The self-priming centrifugal pump of claim 1, wherein: the bottom of the middle seat (2) is fixedly provided with a fixed base (20), the bottom of the fixed base (20) is provided with a fixed base plate (21), and the bottom of the outer side of the fixed base (20) is fixedly provided with a fixed column (2002) through a fixed nut (2001).

Technical Field

The invention relates to the technical field of centrifugal pumps, in particular to a self-suction type centrifugal pump.

Background

The centrifugal pump works by utilizing the centrifugal motion of water generated by the rotation of an impeller, before the water pump is started, an inner cavity of a pump body and a water suction pipe are filled with water, then a motor is started, a pump shaft drives the impeller and the water to rotate at a high speed, the water generates the centrifugal motion and is thrown to the outer edge of the impeller and flows into a water pressing pipeline of the water pump through a flow passage in the pump body, and the centrifugal pump is mainly applied to the production field of medicines, dairy products, cosmetics and beverages.

The existing self-priming centrifugal pump has the following defects:

1. the existing self-priming centrifugal pump mainly adopts a pressure measuring channel to be matched with impellers arranged in a radial shape to transmit pressure energy in a cooperative manner, and has the problems of low efficiency, high configuration power and high noise in the using process;

2. the existing self-priming centrifugal pump is easy to pollute due to the abrasion of an inner impeller when in use, so that the sanitation level of the whole centrifugal pump is lower, and certain limitations exist in the production aspects of medicines, dairy products, cosmetics and beverages.

Therefore, there is a need for improvement of the prior art to solve the above problems.

Disclosure of Invention

The invention aims to provide a self-priming centrifugal pump to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a from inhaling formula centrifugal pump, includes the pump case, the afterbody fixed mounting of pump case has well seat, the inside of pump case is through the main shaft rotation mounting of afterbody has the impeller, the front end fixedly connected with inducer of impeller, the inside of well seat be equipped with main shaft fixed connection's motor shaft, the positive outside limit of pump case has back gland through stud fixed mounting, positive central position department of pump case has preceding gland through first construction bolt fixed mounting, the central position department of preceding gland is equipped with the imbibition mouth, the leakage fluid dram of the top fixedly connected with intercommunication of pump case one side.

Preferably, the pump shell and the middle seat are fixedly connected through a machine seal, and the middle seat is fixedly connected with the machine seal through a second mounting bolt.

Preferably, the inner side of the tail part of the middle seat is provided with a main shaft lock sleeve around the motor shaft, and the outer side of the middle seat at the position of the main shaft lock sleeve is fixedly provided with a third mounting bolt.

Preferably, a front flow guide pipe is fixedly installed on the front face of the pump shell above the liquid suction port through a hoop, and a rear flow guide pipe communicated with the liquid discharge port is fixedly installed on the pump shell on the rear side of the front flow guide pipe.

Preferably, the bottom of the middle seat is fixedly provided with a fixed base, the bottom of the fixed base is provided with a fixed base plate, and the bottom of the outer side of the fixed base is fixedly provided with a fixed column through a fixed nut.

Compared with the prior art, the invention has the following beneficial effects:

1. the self-suction centrifugal pump integrates a screw type inducer on the basis of the existing centrifugal pump, and is a self-suction pump with the conveying viscosity reaching 500mPas, so that the centrifugal pump has higher working efficiency and can reduce the noise during working.

2. This inhale the overall packaging structure who adopts the integral type from inhaling formula centrifugal pump to through inducing the wheel pair liquid and inducing the absorption, avoid appearing wearing and tearing and polluting, make the centrifugal pump can not appear the condition of polluting at the during operation, and then improved the sanitary degree of centrifugal pump, convenient to popularize and use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the present invention;

fig. 3 is a front view of the present invention.

In the figure: 1. a motor shaft; 2. a middle seat; 3. a main shaft; 4. machine sealing; 5. a pump housing; 6. an impeller; 7. a rear gland; 8. an inducer; 9. a front gland; 10. a first mounting bolt; 11. a front draft tube; 12. clamping a hoop; 13. a rear draft tube; 14. a stud; 15. a second mounting bolt; 16. a main shaft lock sleeve; 17. a liquid discharge port; 18. a liquid suction port; 19. a third mounting bolt; 20. a fixed base; 2001. fixing a nut; 2002. fixing a column; 21. and fixing the backing plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, an embodiment of the present invention is shown: a self-priming centrifugal pump comprises a pump shell 5, a middle seat 2 is fixedly arranged at the tail of the pump shell 5, the middle seat 2 is convenient for the fixed installation of the pump shell 5 and is convenient for the fixed installation of the whole centrifugal pump, an impeller 6 is rotatably arranged in the pump shell 5 through a main shaft 3 at the tail, the front end of the impeller 6 is fixedly connected with an inducer 8, the impeller 6 rotatably arranged in the pump shell 5 can drive the inducer 8 to rotate, the inducer 8 can form a negative pressure environment in the pump shell 5 in a rotating mode so as to achieve the effect of liquid suction, a motor shaft 1 fixedly connected with the main shaft 3 is arranged in the middle seat 2, the motor shaft 1 can rotate under the action of a motor so as to drive the impeller 6 in the pump shell 5 to rotate, a rear gland 7 is fixedly arranged at the outer side of the front side of the pump shell 5 through a stud 14, a front gland 9 is fixedly arranged at the central position of, and the central point department of preceding gland 9 is equipped with imbibition mouth 18, the liquid-discharge outlet 17 of top fixedly connected with intercommunication of pump case 5 one side, back gland 7 can be consolidated the rear end of pump case 5, first mounting bolt 10 is convenient for the fixed mounting of preceding gland 9, preceding gland 9 can be closed the imbibition end of pump case 5, and make things convenient for the fixed mounting of imbibition mouth 18, imbibition mouth 18 can conveniently be to the absorption of liquid, liquid-discharge outlet 17 can conveniently be to the discharge of liquid.

Further, pump case 5 and well seat 2 carry out fixed connection through machine seal 4, and well seat 2 seals 4 fixed connection through second construction bolt 15 and machine, and in the embodiment, machine seals 4 can guarantee the fixed connection of pump case 5 and well seat 2, and second construction bolt 15 can lock fixedly to pump case 5 mounted position, guarantees the fastness of installation.

Further, a main shaft locking sleeve 16 is installed around the motor shaft 1 on the inner side of the tail portion of the middle base 2, and a third installation bolt 19 is fixedly installed on the outer side of the middle base 2 at the position of the main shaft locking sleeve 16, in the embodiment, the main shaft locking sleeve 16 can lock the motor shaft 1 and the main shaft 3, and the third installation bolt 19 can ensure the reinforcement of the middle base 2 at the positions of the motor shaft 1 and the main shaft 3.

Further, the front of pump case 5 above imbibition mouth 18 has preceding honeycomb duct 11 through clamp 12 fixed mounting, and fixed mounting has the back honeycomb duct 13 with the fluid-discharge outlet 17 intercommunication on the pump case 5 of preceding honeycomb duct 11 rear side, and in the embodiment, clamp 12 is convenient for the fixed mounting of preceding honeycomb duct 11, and convenient and the intercommunication of back honeycomb duct 13, and back honeycomb duct 13 can communicate with fluid-discharge outlet 17 to realize the effect of drain.

Further, a fixed base 20 is fixedly installed at the bottom of the middle seat 2, a fixed base plate 21 is arranged at the bottom of the fixed base 20, and a fixed column 2002 is fixedly installed at the bottom of the outer side of the fixed base 20 through a fixed nut 2001.

The working principle is as follows: the motor is started, the motor shaft 1 rotates at a high speed to drive the main shaft 3 to rotate, the main shaft 3 drives the impeller 6 and the inducer 8 to coaxially rotate at the same speed, and cavitation of the inducer 8 has little influence on external characteristics; the lift generated by the inducer 8 reduces the cavitation allowance of the pump and improves the cavitation resistance of the pump; the centrifugal pump is given a certain self-priming capacity to suck liquid through the suction port 18 and discharge the liquid through the discharge port 17.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.