阅读说明：本技术 一种fjx无泄漏强制循环泵 (FJX does not have forced circulation pump that leaks ) 是由 周卫彬 于 2020-11-19 设计创作，主要内容包括：本发明公开了一种FJX无泄漏强制循环泵,涉及工业用泵技术领域,其技术方案是：包括强制循环泵本体、防旋涡装置一和防旋涡装置二,所述强制循环泵本体一侧内壁安装有叶轮,所述强制循环泵本体底部固定连接进液管,所述强制循环泵本体顶部安装有出液管,所述强制循环泵本体一侧内壁安装有轴承,所述轴承一端固定连接转动轴,所述转动轴外表面套接安装有防旋涡装置一,所述防旋涡装置一内壁套接防旋涡导液板,所述防旋涡装置一一侧安装有防渗橡胶条一,本发明提高了强制循环泵的工作效率,和泵的抗汽蚀性能,防止强制循环泵在长期的汽蚀下会产生磨损从而引发泄露,增强了强制循环泵的使用寿命和稳定性。(The invention discloses a FJX non-leakage forced circulation pump, relating to the technical field of industrial pumps, and the technical scheme is as follows: the vortex-preventing device comprises a forced circulation pump body, a vortex-preventing device I and a vortex-preventing device II, wherein an impeller is installed on the inner wall of one side of the forced circulation pump body, a liquid inlet pipe is fixedly connected to the bottom of the forced circulation pump body, a liquid outlet pipe is installed at the top of the forced circulation pump body, a bearing is installed on the inner wall of one side of the forced circulation pump body, one end of the bearing is fixedly connected with a rotating shaft, the vortex-preventing device I is sleeved on the outer surface of the rotating shaft, a vortex-preventing liquid guide plate is sleeved on the inner wall of the vortex-preventing device I, and anti-seepage rubber strips I are installed on one side of the vortex-preventing device I.)

1. The utility model provides a FJX does not have leakage force circulation pump, includes force circulation pump body (1), prevents whirlpool device (6) and prevents whirlpool device two (12), its characterized in that: impeller (2) are installed to the inner wall of one side of forced circulation pump body (1), forced circulation pump body (1) bottom fixed connection feed liquor pipe (3), drain pipe (4) are installed at forced circulation pump body (1) top, bearing (7) are installed to the inner wall of one side of forced circulation pump body (1), bearing (7) one end fixed connection axis of rotation (8), axis of rotation (8) surface cup joints installs and prevents vortex device (6), prevent vortex device (6) inner wall cup joint and prevent vortex drain board (5), prevent vortex device (6) one side and install prevention of seepage rubber strip (9), prevent vortex drain board (5) one side and install prevention of seepage rubber strip two (10), prevent vortex device (6) inner wall and install spring (11).

2. An FJX non-leakage forced circulation pump according to claim 1, characterized in that: the vortex prevention device I (6) is arranged on the inner wall of the forced circulation pump body (1), the rotating shaft (8) is fixedly connected with one side of the vortex prevention liquid guide plate (5), the vortex prevention liquid guide plate (5) is rotatably connected with the vortex prevention device I (6), the vortex prevention liquid guide plate (5) is uniformly arranged on the inner wall of the forced circulation pump body (1), and five groups of vortex prevention liquid guide plates (5) are arranged.

3. An FJX non-leakage forced circulation pump according to claim 1, characterized in that: the first impermeable rubber strip (9) is in sliding connection with the second impermeable rubber strip (10), and the bottom of the first vortex preventing device (6) is streamline.

4. An FJX non-leakage forced circulation pump according to claim 1, characterized in that: one end of each spring (11) is fixedly connected with the outer surface of the vortex-preventing liquid guide plate (5), the springs (11) are uniformly arranged on the inner wall of the vortex-preventing device I (6), and the number of the springs (11) is six.

5. An FJX non-leakage forced circulation pump according to claim 1, characterized in that: and the vortex-preventing liquid guide plate (5) is rotationally connected with the inner wall of the vortex-preventing device I (6).

6. An FJX non-leakage forced circulation pump according to claim 1, characterized in that: the first vortex preventing devices (6) are uniformly arranged on the inner wall of the forced circulation pump body (1), the number of the first vortex preventing devices (6) is two, and the directions of the two first vortex preventing devices (6) are opposite.

7. An FJX non-leakage forced circulation pump according to claim 1, characterized in that: prevent vortex device two (12) is installed to force circulation pump body (1) inner wall, prevent vortex device two (12) one side fixed connection fixing base (13), fixed plate (14) are installed at fixing base (13) top, fixed plate (14) one end fixed connection elastic strip (15), elastic strip (15) one side is equipped with fixed glue film one (16), fixed glue film one (16) one side is equipped with gasbag (17), fixed glue film two (18) are installed to gasbag (17) one side, foam-rubber cushion (19) are installed to fixed glue film two (18) one side.

8. An FJX non-leakage forced circulation pump according to claim 7, wherein: the vortex prevention device is characterized in that the fixed seats (13) are uniformly arranged on one side of the vortex prevention device II (12), the number of the fixed seats (13) is two, the vortex prevention device II (12) is uniformly arranged on the inner wall of the forced circulation pump body (1), the number of the vortex prevention device II (12) is two, the directions of the two vortex prevention device II (12) are opposite, and the bottom of the vortex prevention device II (12) is in a streamline shape.

Technical Field

The invention relates to the technical field of industrial pumps, in particular to a FJX leakage-free forced circulation pump.

Background

The FJX type forced circulation pump has the characteristics of corrosion resistance and abrasion resistance, adopts a precision casting method to ensure the shape and the size precision of the blade and the impeller shell, has a complex shape and a precise size, and has a horizontal structure and a vertical structure. The pump body can be poured or welded with a full-open impeller, and the pump has the advantages of excellent hydraulic performance, high efficiency, good cavitation performance and stable operation. The sealing adopts double-end mechanical sealing or packing sealing installation (vertical), lubrication of a rolling bearing is adopted, a bearing box and a water cooling sleeve are adopted, the transmission mode can be directly transmitted by an elastic coupling by various transmission means, belt transmission and a hydraulic coupling, the installation mode can adopt ground installation or installation, the application range of the device is very wide, and the device is mainly used for evaporating, concentrating and diaphragm process caustic soda, cooling phosphoric acid, vacuum salt making, calcium chloride, ammonium chloride, sodium chlorate, alumina, titanium pigment, lactic acid, sugar, ammonium cyanide, papermaking, refrigerant, waste acid, waste water concentration and other industries.

The prior art has the following defects: in the field of general forced circulation pumps, the designed flow channel of the pump body is wide and cannot be regular, so that liquid in the pump body flows very disorderly, a large amount of vortexes can be generated, cavitation is generated, liquid can rotate ceaselessly in the pump body and cannot be conveyed out, abrasion can be generated under long-term cavitation, leakage is caused, the pump cannot work normally, and the working efficiency of the pump is influenced.

Therefore, it is necessary to invent a FJX non-leakage forced circulation pump.

Disclosure of Invention

Therefore, the invention provides an FJX leakage-free forced circulation pump, which solves the problems in the background technology by arranging a vortex-proof device I on the inner wall of a body of the forced circulation pump, rotationally connecting a vortex-proof liquid guide plate with a vortex-proof device I, slidably connecting a seepage-proof rubber strip I with a seepage-proof rubber strip II, arranging the vortex-proof devices I into two groups, and enabling the vortex-proof devices I to face opposite directions.

In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a FJX does not have leakage force-feed circulation pump, includes force-feed circulation pump body, prevents whirlpool device one and prevents whirlpool device two, force-feed circulation pump body one side inner wall installs the impeller, force-feed circulation pump body bottom fixed connection feed liquor pipe, the drain pipe is installed at force-feed circulation pump body top, force-feed circulation pump body one side inner wall installs the bearing, bearing one end fixed connection axis of rotation, the axis of rotation surface cup joints installs prevents whirlpool device one, prevent that whirlpool device inner wall cup joints prevents whirlpool and leads the liquid board, prevent that whirlpool device one side installs prevention of seepage rubber strip one, prevent whirlpool and lead liquid board one side and install prevention of seepage rubber strip two, prevent whirlpool device one inner wall and install the spring.

Preferably, the first vortex-preventing device is mounted on the inner wall of the forced circulation pump body, the rotating shaft is fixedly connected with one side of the vortex-preventing liquid guide plate, the vortex-preventing liquid guide plate is rotatably connected with the first vortex-preventing device, the vortex-preventing liquid guide plates are uniformly mounted on the inner wall of the forced circulation pump body, and the number of the vortex-preventing liquid guide plates is five.

Preferably, the first impermeable rubber strip is in sliding connection with the second impermeable rubber strip, and the bottom of the first vortex preventing device is streamline.

Preferably, one end of each spring is fixedly connected with the outer surface of the vortex-preventing liquid guide plate, the springs are uniformly arranged on the inner wall of the vortex-preventing device, and the number of the springs is six.

Preferably, the vortex-preventing liquid guide plate is rotatably connected with an inner wall of the vortex-preventing device.

Preferably, the first vortex preventing devices are uniformly arranged on the inner wall of the body of the forced circulation pump, the number of the first vortex preventing devices is two, and the directions of the two first vortex preventing devices are opposite.

Preferably, the inner wall of the forced circulation pump body is provided with a second vortex prevention device, one side of the second vortex prevention device is fixedly connected with a fixed seat, the top of the fixed seat is provided with a fixed plate, one end of the fixed plate is fixedly connected with an elastic strip, one side of the elastic strip is provided with a first fixed glue layer, one side of the first fixed glue layer is provided with an air bag, one side of the air bag is provided with a second fixed glue layer, and one side of the second fixed glue layer is provided with a spongy cushion.

Preferably, the fixing seats are uniformly installed on one side of the vortex prevention devices II, the number of the fixing seats is two, the vortex prevention devices II are uniformly installed on the inner wall of the forced circulation pump body, the number of the vortex prevention devices II is two, the directions of the two vortex prevention devices II are opposite, and the bottoms of the vortex prevention devices II are in a streamline shape.

The invention has the beneficial effects that:

1. the vortex prevention device I is arranged on the inner wall of the forced circulation pump body, the rotating shaft is fixedly connected with one side of the vortex prevention liquid guide plate, the vortex prevention liquid guide plate is rotatably connected with one side of the vortex prevention device I, the vortex prevention liquid guide plate is uniformly arranged on the inner wall of the forced circulation pump body, the number of the vortex prevention liquid guide plate is set into five groups, when an impeller rotates at a high speed along with the forced circulation pump body, liquid surges on the inner wall of the forced circulation pump body, when passing through the five groups of vortex prevention liquid guide plates which are uniformly distributed, vortex cannot be generated, the liquid in the forced circulation pump body tends to flow stably and orderly, so that the liquid can be ensured to be smoothly output from a liquid outlet pipe, meanwhile, the use efficiency of the pump and the cavitation resistance of the pump are also improved, and the forced circulation pump is prevented from being abraded under long-term cavitation so as.

2. The anti-vortex device comprises an anti-vortex device, an anti-vortex device and a vortex device, wherein the anti-vortex device is arranged on the anti-vortex device, the anti-.

3. One end of the spring is fixedly connected with the outer surface of the vortex-preventing liquid guide plate, the springs are uniformly arranged on the inner wall of the vortex-preventing device, the number of the springs is set to six groups, when liquid passes through the vortex-preventing liquid guide plate on the inner wall of the vortex-preventing device at a high speed, the six groups of springs are uniformly arranged between the vortex-preventing liquid guide plate and the vortex-preventing device, when the vortex-preventing liquid guide plate below the vortex-preventing liquid guide plate in the two groups of vortex-preventing liquid guide plates is impacted by the liquid, the liquid rebounds to the vortex-preventing liquid guide plate above the vortex-preventing liquid guide plate, and then the liquid is output from the liquid outlet pipe above the vortex-preventing liquid guide plate, so that the liquid can be output from the liquid outlet pipe smoothly, the use efficiency of the pump and the cavitation resistance of the pump are improved, a buffer effect is provided for the vortex-preventing liquid.

4. The vortex-preventing liquid guide plate is rotationally connected with the inner wall of the vortex-preventing device I, when liquid passes through the vortex-preventing liquid guide plate on the inner wall of the vortex-preventing device I at a high speed, the first anti-seepage rubber strip arranged on one side of the vortex-preventing device I and the second anti-seepage rubber strip arranged on one side of the vortex-preventing liquid guide plate I can be overlapped together all the time, the purpose of preventing the liquid from flowing into the first anti-vortex device I to cause corrosion is achieved, and the service life and the stability of the first anti-vortex device I are improved.

5. The vortex preventing device II is arranged on the inner wall of the body of the forced circulation pump, one side of the vortex preventing device II is fixedly connected with the fixed seat, the top of the fixed seat is provided with the fixed plate, one end of the fixed plate is fixedly connected with the elastic strip, one side of the elastic strip is provided with the fixed glue layer I, one side of the fixed glue layer I is provided with the air bag, one side of the air bag is provided with the fixed glue layer II, one side of the fixed glue layer II is provided with the sponge cushion, when liquid passes through the vortex preventing liquid guide plate on the inner wall of the vortex preventing device II at a high speed, the elastic strip and the air bag are uniformly arranged between the vortex preventing liquid guide plate and the vortex preventing device II, when the vortex preventing liquid guide plate on the lower part of the two vortex preventing liquid guide plates is impacted by the liquid, the liquid rebounds to the vortex preventing liquid guide plate on the upper part, and then the liquid is output from the liquid outlet pipe through the vortex preventing liquid guide, prevent the forced circulation pump from generating abrasion under long-term cavitation so as to cause leakage.

6. The fixing base is evenly installed in two one sides of vortex preventing device, and the quantity of fixing base sets up to two sets ofly, and vortex preventing device two evenly installs at force circulation pump body inner wall, and vortex preventing device two's quantity sets up to two sets ofly, and two sets ofly prevent vortex device two orientation opposite, and the shape of vortex preventing device two bottoms is the streamline shape, when liquid is high-speed when vortex preventing device two, reduces partial resistance, improves liquid output efficiency.

Drawings

FIG. 1 is a schematic structural diagram of a forced circulation pump according to the present invention;

FIG. 2 is a side view of the body of the forced circulation pump provided by the present invention;

FIG. 3 is an enlarged view of A of FIG. 1 in accordance with the present invention;

FIG. 4 is a diagram illustrating an effect of the vortex breaker according to the present invention;

FIG. 5 is a diagram illustrating the second effect of the vortex breaker according to the embodiment 2 of the present invention;

fig. 6 is an enlarged view of B in fig. 5 according to embodiment 2 of the present invention.

In the figure: the forced circulation pump comprises a forced circulation pump body 1, an impeller 2, a liquid inlet pipe 3, a liquid outlet pipe 4, a vortex-preventing liquid guide plate 5, a vortex-preventing device I6, a bearing 7, a rotating shaft 8, an anti-seepage rubber strip I9, an anti-seepage rubber strip II 10, a spring 11, a vortex-preventing device II 12, a fixed seat 13, a fixed plate 14, an elastic strip 15, a fixed glue layer I16, an air bag 17, a fixed glue layer II 18 and a sponge cushion 19.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example 1:

referring to the attached drawings 1-4, the FJX leakage-free forced circulation pump provided by the invention comprises a forced circulation pump body 1, a first vortex prevention device 6 and a second vortex prevention device 12, wherein an impeller 2 is installed on the inner wall of one side of the forced circulation pump body 1, a liquid inlet pipe 3 is fixedly connected to the bottom of the forced circulation pump body 1, a liquid outlet pipe 4 is installed at the top of the forced circulation pump body 1, a bearing 7 is installed on the inner wall of one side of the forced circulation pump body 1, one end of the bearing 7 is fixedly connected with a rotating shaft 8, the first vortex prevention device 6 is installed on the outer surface of the rotating shaft 8 in a sleeved mode, a vortex prevention liquid guide plate 5 is installed on the inner wall of the first vortex prevention device 6 in a sleeved mode, an anti-seepage rubber strip 9 is installed on one side of the first vortex prevention device 6, an anti.

Further, the vortex-preventing device 6 is installed on the inner wall of the forced circulation pump body 1, the rotating shaft 8 is fixedly connected with one side of the vortex-preventing liquid guide plate 5, the vortex-preventing liquid guide plate 5 is rotatably connected with the vortex-preventing device 6, the vortex-preventing liquid guide plates 5 are uniformly installed on the inner wall of the forced circulation pump body 1, the number of the vortex-preventing liquid guide plates 5 is set to five groups, when the impeller 2 rotates at a high speed along with the forced circulation pump body 1, liquid surges on the inner wall of the forced circulation pump body 1, and when passing through the five groups of vortex-preventing liquid guide plates 5 which are uniformly distributed, vortex cannot be generated, so that the liquid in the forced circulation pump body 1 tends to flow steadily and orderly, the liquid can be ensured to be smoothly output from the liquid outlet pipe 4, meanwhile, the service efficiency of the pump and the cavitation resistance of the pump are also improved, and the forced circulation pump is prevented from being worn under long-term cavitation so as to.

Further, the first anti-vortex device 9 is in sliding connection with the second anti-vortex device 10, the bottom of the first anti-vortex device 6 is in a streamline shape, when liquid passes through the first anti-vortex liquid guide plate 5 on the inner wall of the first anti-vortex device 6 at a high speed, the first anti-vortex device 6 is provided with the first anti-vortex device 9 on one side and the second anti-vortex device 5 is provided with the second anti-vortex device 10 on one side, the first anti-vortex device 9 and the second anti-vortex device are overlapped together all the time, the purpose of preventing the liquid from flowing into the first anti-vortex device 6 to cause corrosion is achieved, the service life and the stability of the first anti-vortex device 6 are improved, the bottom of the first anti-vortex device 6 is in a streamline shape, and when the liquid passes through the first anti-vortex device 6.

Furthermore, one end of the spring 11 is fixedly connected with the outer surface of the vortex-preventing liquid guide plate 5, the springs 11 are uniformly arranged on the inner wall of the vortex-preventing device I6, the number of the springs 11 is set to six groups, when the liquid passes through the vortex-preventing liquid guide plate 5 on the inner wall of the vortex-preventing device I6 at a high speed, six groups of springs 11 are uniformly arranged between the vortex-preventing liquid guide plate 5 and the vortex-preventing device I6, when the vortex-proof liquid guide plate 5 at the lower part of the two sets of vortex-proof liquid guide plates 5 is impacted by liquid, the liquid rebounds to the vortex-proof liquid guide plate 5 at the upper part and then is output through the liquid outlet pipe 4 at the upper part of the vortex-proof liquid guide plate 5 at the upper part, therefore, the liquid can be ensured to be smoothly output from the liquid outlet pipe 4, the service efficiency of the pump and the cavitation resistance of the pump are improved, a buffer effect is provided for the vortex-preventing liquid guide plate 5, and the service life and the stability of the vortex-preventing device 6 are improved.

Furthermore, the vortex-preventing liquid guide plate 5 is rotationally connected with the inner wall of the vortex-preventing device I6, when liquid passes through the vortex-preventing liquid guide plate 5 on the inner wall of the vortex-preventing device I6 at a high speed, the first anti-seepage rubber strip 9 arranged on one side of the vortex-preventing device I6 and the second anti-seepage rubber strip 10 arranged on one side of the vortex-preventing liquid guide plate 5 can be overlapped together all the time, so that the purposes of preventing the liquid from flowing into the vortex-preventing device I6 to cause corrosion and prolonging the service life and improving the stability of the vortex-preventing device I6 are achieved.

Further, vortex preventing devices 6 are uniformly arranged on the inner wall of the forced circulation pump body 1, the number of the vortex preventing devices 6 is two, the directions of the two sets of vortex preventing devices 6 are opposite, when liquid passes through the vortex preventing liquid guide plate 5 on the inner wall of the vortex preventing device 6 at a high speed, six sets of springs 11 are uniformly arranged between the vortex preventing liquid guide plate 5 and the vortex preventing device 6, when the vortex preventing liquid guide plate 5 on the lower portion of the two sets of vortex preventing liquid guide plates 5 is impacted by liquid, the liquid is rebounded to the vortex preventing liquid guide plate 5 on the upper portion, and then the liquid is output from the liquid outlet pipe 4 on the upper portion of the vortex preventing liquid guide plate 5, so that the liquid can be smoothly output from the liquid outlet pipe 4, meanwhile, the service efficiency of the pump and the cavitation resistance of the pump are improved, and the forced circulation pump is prevented from being worn under long-term cavitation so as to cause leakage.

The using process of the invention is as follows: when the impeller 2 rotates at a high speed along with the body 1 of the forced circulation pump, liquid surges on the inner wall of the body 1 of the forced circulation pump and passes through the five groups of vortex-proof liquid guide plates 5 which are uniformly distributed, vortex cannot be generated, so that the liquid in the body 1 of the forced circulation pump tends to flow steadily and orderly, the liquid can be ensured to be output from the liquid outlet pipe 4 smoothly, the use efficiency of the pump and the cavitation resistance of the pump are improved, when the liquid passes through the vortex-proof liquid guide plates 5 on the inner wall of the vortex-proof device I6 at a high speed, the seepage-proof rubber strips I9 arranged on one side of the vortex-proof device I6 and the seepage-proof rubber strips II 10 arranged on one side of the vortex-proof liquid guide plates 5 are overlapped all the time, the purposes of preventing the liquid from flowing into the vortex-proof device I6 to cause corrosion and improving the service life and stability of the vortex-proof device I6 are achieved, the bottom of the vortex-proof, when the liquid passes through the vortex preventing device I6 at high speed, partial resistance is reduced, the liquid output efficiency is improved, when the liquid passes through the vortex-preventing liquid guide plate 5 on the inner wall of the vortex-preventing device I6 at a high speed, six groups of springs 11 are uniformly arranged between the vortex-preventing liquid guide plate 5 and the vortex-preventing device I6, when the vortex-proof liquid guide plate 5 at the lower part of the two sets of vortex-proof liquid guide plates 5 is impacted by liquid, the liquid rebounds to the vortex-proof liquid guide plate 5 at the upper part and then is output through the liquid outlet pipe 4 at the upper part of the vortex-proof liquid guide plate 5 at the upper part, therefore, the liquid can be smoothly output from the liquid outlet pipe 4, the service efficiency of the pump and the cavitation resistance of the pump are improved, the forced circulation pump is prevented from being abraded under long-term cavitation to cause leakage, a buffering effect is provided for the vortex-preventing liquid guide plate 5, and the service life and the stability of the vortex-preventing device 6 are improved.

Example 2:

referring to the attached drawings 5-6, the invention provides an FJX leakage-free forced circulation pump, which comprises a second vortex preventing device 12, a fixed seat 13, a fixed plate 14, an elastic strip 15, a first fixed glue layer 16, an air bag 17, a second fixed glue layer 18 and a spongy cushion 19, wherein the second vortex preventing device 12 is arranged on the inner wall of a body 1 of the forced circulation pump, the fixed seat 13 is fixedly connected with one side of the second vortex preventing device 12, the fixed plate 14 is arranged at the top of the fixed seat 13, one end of the fixed plate 14 is fixedly connected with the elastic strip 15, the first fixed glue layer 16 is arranged on one side of the elastic strip 15, the air bag 17 is arranged on one side of the first fixed glue layer 16, the second fixed glue layer 18 is arranged on one side of the air bag 17, the spongy cushion 19 is arranged on one side of the second fixed glue layer 18, when liquid passes through the vortex preventing liquid guide plate 5 on the inner wall of the second vortex preventing device 12, when the vortex-proof liquid guide plates 5 on the lower side in the two sets of vortex-proof liquid guide plates 5 are impacted by liquid, the liquid rebounds to the vortex-proof liquid guide plates 5 on the upper side and is then output through the liquid outlet pipe 4 on the vortex-proof liquid guide plates 5 on the upper side, so that the liquid can be ensured to be smoothly output from the liquid outlet pipe 4, the use efficiency of the pump and the cavitation resistance of the pump are improved, and the forced circulation pump is prevented from being abraded under long-term cavitation to cause leakage.

Further, fixing base 13 uniform mount is in preventing two 12 one sides of whirlpool device, the quantity of fixing base 13 sets up to two sets ofly, prevent whirlpool device two 12 uniform mount at force circulation pump body 1 inner wall, the quantity of preventing whirlpool device two 12 sets up to two sets ofly, two sets ofly prevent two 12 orientation of whirlpool device are opposite, the shape of preventing whirlpool device two 12 bottoms is the streamline shape, when two 12 of the whirlpool device of high-speed process of liquid, reduce partial resistance, improve liquid output efficiency.

The using process of the invention is as follows: when liquid passes through the vortex-preventing liquid guide plate 5 on the inner wall of the vortex-preventing device II 12 at high speed, the elastic strips 15 and the air bags 17 are uniformly arranged between the vortex-preventing liquid guide plate 5 and the vortex-preventing device II 12, when the vortex-preventing liquid guide plate 5 at the lower part of the two sets of vortex-preventing liquid guide plates 5 is impacted by the liquid, the liquid rebounds to the vortex-preventing liquid guide plate 5 at the upper part and is then output through the liquid outlet pipe 4 at the upper part of the vortex-preventing liquid guide plate 5 at the upper part, so that the liquid can be ensured to be smoothly output from the liquid outlet pipe 4, meanwhile, the use efficiency of the pump and the cavitation resistance performance of the pump are also improved, the shape of the bottom of the vortex-preventing device II 12 is streamline, when the liquid passes through the vortex-preventing device II 12 at high speed, partial resistance is reduced, the liquid output efficiency is improved, the elastic strips 15 are made of elastic fibers and are used for providing a buffer effect for the vortex-preventing liquid guide plate 5, the service life and the stability of the vortex-, prevent the forced circulation pump from generating abrasion under long-term cavitation so as to cause leakage.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.