Anti-cavitation protection device for water feeding pump

Abstract

The utility model discloses an anti-cavitation protection device of a feed pump, and relates to the technical field of anti-cavitation protection of water pumps. The device comprises a motor, a water pump is arranged on the left side of the motor, a water inlet pipe is fixedly connected to the left side of the water pump, a water outlet pipe is fixedly connected to the top of the water pump, a protection assembly is arranged above the water outlet pipe and comprises a connecting pipe, an inner shell is arranged in the connecting pipe, and an annular block is slidably connected to the bottom of the inner shell; and rotating holes are formed in the front faces of the connecting pipe and the inner shell correspondingly, and rotating rods are rotationally connected to the inner walls of the rotating holes. According to the water pump, the protection assembly is arranged, specifically, the rotating handle is rotated clockwise to drive the rotating rod to rotate, the protruding position of the oval push block can push the annular block downwards, the opening is reduced, and therefore the discharge flow of water is reduced, water flow can stay in the water pump more fully, and the effect of removing gas in the water flow is improved; and the cavitation condition is greatly reduced, and the water pump is better protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pump anti-cavitation protection, in particular to an anti-cavitation protection device for a water pump. Background Art

[0002] Coal chemical water pumps are key equipment in coal chemical processes. They are used to transport and circulate various liquid media to ensure the smooth progress of the process. In the coal chemical industry, water pumps are widely used and important. Their types and performance directly affect the stable operation and economy of the entire device.

[0003] When the coal chemical water pump is in use, due to the high speed, it is easy to generate gas inside the water flow. After the generated gas comes into contact with the inside of the pump body, it will cause cavitation of the water pump. The existing water pump does not have an effective protection function. With long-term use, the inside of the pump body will be severely cavitated, which will cause damage to the water pump and cause economic losses. Therefore, we propose a water pump anti-cavitation protection device. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-cavitation protection device for a water pump, by setting a protection component, specifically, turning the handle clockwise to drive the turning rod to rotate, the protruding position of the elliptical push block will push the annular block downward, reduce the opening, and thus reduce the water discharge flow rate, so that the water flow can stay in the water pump more fully, thereby improving the effect of removing water flow gas, greatly reducing cavitation, and better protecting the water pump, solving the problem that the existing water pump does not have an effective protection function. With long-term use, the inside of the pump body will suffer from severe cavitation, which will cause damage to the water pump and cause economic losses.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a water pump cavitation protection device, comprising a motor, a water pump is arranged on the left side of the motor, a water inlet pipe is fixedly connected to the left side of the water pump, a water outlet pipe is fixedly connected to the top of the water pump, a protection component is arranged above the water outlet pipe, and the protection component comprises a connecting pipe;

[0007] An inner shell is provided inside the connecting pipe, and an annular block is slidably connected to the bottom of the inner shell. A rotating hole is provided on the connecting pipe and the front of the inner shell. A rotating rod is rotatably connected to the inner wall of the rotating hole, and an elliptical push block is fixedly connected to the back of the rotating rod. By providing a protection component, specifically, the rotating handle is rotated clockwise to drive the rotating rod to rotate, so that the protruding position of the elliptical push block will push the annular block downward, reduce the opening, and thus reduce the water discharge flow rate, so that the water flow can stay in the water pump more fully, thereby improving the effect of removing water flow gas, greatly reducing cavitation, and better protecting the water pump.

[0008] Furthermore, the bottom of the connecting pipe is fixedly connected to the top of the water outlet pipe, the outer surface of the inner shell is fixedly connected to a plurality of support frames, the sides of the plurality of support frames away from the inner shell are fixedly connected to the inner wall of the connecting pipe, and the inner wall of the protection component is fixedly connected to a plurality of fixing blocks.

[0009] Furthermore, a conical block is fixedly connected to the top of the inner wall of the annular block, a plurality of openings are opened on the outer surface of the annular block, and the openings are arranged in a circular array. A plurality of vertical rods are fixedly connected to the top of the annular block, and the vertical rods are arranged in a circular array.

[0010] Furthermore, the tops of the plurality of vertical rods are fixedly connected to the limiting blocks, the outer sides of the plurality of vertical rods are sleeved with springs, the tops of the vertical rods penetrate the fixing blocks and extend to the outside, and the vertical rods are slidably connected to the fixing blocks.

[0011] Furthermore, the left side of the water inlet pipe is fixedly connected to a widened pipe by bolts, the right side of the widened pipe is fixedly connected to an inner ring, two sealing rings 1 are sleeved on the outer side of the inner ring, an annular groove is opened on the left side of the water inlet pipe, and a sealing ring 2 is sleeved inside the annular groove, the inner ring is plugged into the water inlet pipe, the outer ring of the sealing ring 1 contacts the inner ring of the water inlet pipe, and the left side of the sealing ring 2 contacts the right side of the widened pipe. By setting the widened pipe, specifically after the widened pipe and the water inlet pipe are installed and fixed, the sealing rings 1 and 2 can play a sealing role to prevent air from entering the water inlet pipe. The widened pipe can make the inhaled water flow enter the water inlet pipe from large to small, so that the water flow enters more fully and reduces air residue. At the same time, the water inlet pipe is set to be higher on the left and lower on the right, which can further reduce the gas in the water flow.

[0012] Furthermore, a turning handle is fixedly connected to the front side of the turning rod, the outer surface of the elliptical push block contacts the top of the annular block, the outer ring of the annular block is slidably connected to the inner wall of the connecting pipe and the inner wall of the water outlet pipe, the top of the spring is fixedly connected to the bottom of the limit block, the bottom of the spring is fixedly connected to the top of the fixed block, and two friction rings are fixedly connected to the outer surface of the turning rod.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model sets a protection component, specifically, by rotating the handle clockwise to drive the rotating rod to rotate, the protruding position of the elliptical push block will push the annular block downward, reduce the opening, and thus reduce the water discharge flow rate, so that the water flow can stay in the water pump more fully, thereby improving the effect of removing water flow gas, greatly reducing cavitation, and better protecting the water pump.

[0015] 2. The utility model sets a widened pipe. Specifically, after the widened pipe and the water inlet pipe are installed and fixed, the sealing ring 1 and the sealing ring 2 can play a sealing role to prevent air from entering the water inlet pipe. The widened pipe can make the sucked water flow enter the water inlet pipe from large to small, so that the water flow enters more fully and reduces air residue. At the same time, the water inlet pipe is set to be higher on the left and lower on the right, which can further reduce the gas in the water flow.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for describing the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the connecting pipe of the utility model;

[0020] Figure 3 This is a schematic diagram of the bottom structure of the inner shell of the utility model;

[0021] Figure 4 This is a schematic diagram of the top structure of the annular block of the utility model;

[0022] Figure 5 This is a front cross-sectional structural diagram of the utility model widened pipeline;

[0023] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure of A.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Motor; 11. Water pump; 111. Water inlet pipe; 112. Water outlet pipe; 12. Protection component; 121. Connecting pipe; 122. Inner shell; 221. Support frame; 222. Fixed block; 123. Ring block; 231. Conical block; 232. Opening; 233. Vertical rod; 234. Limit block; 235. Spring; 124. Turn rod; 241. Turn handle; 242. Oval push block; 13. Widen pipe; 131. Inner ring; 132. Sealing ring 1; 133. Sealing ring 2. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-6As shown, the utility model is a cavitation protection device for a water pump, comprising a motor 1, a water pump 11 is arranged on the left side of the motor 1, a water inlet pipe 111 is fixedly connected to the left side of the water pump 11, a water outlet pipe 112 is fixedly connected to the top of the water pump 11, a protection component 12 is arranged above the water outlet pipe 112, the protection component 12 comprises a connecting pipe 121, an inner shell 122 is arranged inside the connecting pipe 121, a ring block 123 is slidably connected to the bottom of the inner shell 122, a rotating hole is opened on the front side of the connecting pipe 121 and the inner shell 122, a rotating rod 124 is rotatably connected to the inner wall of the rotating hole, an elliptical push block 242 is fixedly connected to the back side of the rotating rod 124, and the protection component 12 is arranged, specifically, the turning handle 241 is turned clockwise to drive the rotating rod 124 to rotate, so that the elliptical push block 242 protrudes from the position The annular block 123 will be pushed downward to reduce the opening 232, thereby reducing the water discharge flow rate, enabling the water flow to stay more fully in the water pump 11, thereby improving the effect of removing water flow gas, greatly reducing cavitation, and better protecting the water pump 11. The bottom of the connecting pipe 121 is fixedly connected to the top of the water outlet pipe 112, and a plurality of support frames 221 are fixedly connected to the outer surface of the inner shell 122. The sides of the plurality of support frames 221 away from the inner shell 122 are fixedly connected to the inner wall of the connecting pipe 121. The inner wall of the protection component 12 is fixedly connected to a plurality of fixing blocks 222. The support frames 221 are used to support the inner shell 122. The top of the inner shell 122 is conical, which can better discharge the water flow. The fixing blocks 222 are used to fix the vertical rod 23 3 plays a limiting role. The top of the inner wall of the annular block 123 is fixedly connected with a conical block 231. The outer surface of the annular block 123 is provided with a plurality of openings 232, and the plurality of openings 232 are arranged in a circumferential array. The top of the annular block 123 is fixedly connected with a plurality of vertical rods 233, and the plurality of vertical rods 233 are arranged in a circumferential array. The water flow will be discharged from the opening 232 on the annular block 123. The conical block 231 can play a diversion function for the water flow and improve the flow effect. The tops of the plurality of vertical rods 233 are fixedly connected with the limiting block 234. The outer sides of the plurality of vertical rods 233 are sleeved with springs 235. The tops of the vertical rods 233 penetrate the fixed block 222 and extend to the outside. The vertical rods 233 are slidably connected with the fixed block 222. When the annular block 123 moves, it will drive the vertical rods 2 33 slides on the fixing block 222, so that the annular block 123 can make a linear motion. The left side of the water inlet pipe 111 is fixedly connected with the widened pipe 13 by bolts, and the right side of the widened pipe 13 is fixedly connected with the inner ring 131. The outer side of the inner ring 131 is sleeved with two sealing rings 132. The left side of the water inlet pipe 111 is provided with an annular groove, and the inner side of the annular groove is sleeved with a sealing ring 2 133. The inner ring 131 is plugged into the water inlet pipe 111, and the outer ring of the sealing ring 132 contacts the inner ring of the water inlet pipe 111, and the left side of the sealing ring 2 133 contacts the right side of the widened pipe 13. By setting the widened pipe 13, specifically after the widened pipe 13 and the water inlet pipe 111 are installed and fixed, the sealing rings 132 and 133 can play a sealing role to prevent air from entering the water inlet pipe 111.Widening the pipe 13 can make the inhaled water flow enter the water inlet pipe 111 from large to small, so that the water flow is fuller and the air residue is reduced. At the same time, the water inlet pipe 111 is set to be high on the left and low on the right, which can reduce the gas in the water flow again. The front of the rotating rod 124 is fixedly connected with the rotating handle 241. The outer surface of the elliptical push block 242 contacts the top of the annular block 123. The outer ring of the annular block 123 is slidably connected to the inner wall of the connecting pipe 121 and the inner wall of the water outlet pipe 112. The top of the spring 235 is fixedly connected to the bottom of the limit block 234, and the bottom of the spring 235 is fixedly connected to the top of the fixed block 222. The outer surface of the rotating rod 124 is fixedly connected with two friction rings. The contact position between the rotating rod 124 and the connecting pipe 121 is provided with two friction rings, which can increase the friction force, making the rotating rod 124 difficult to rotate, and preventing the annular block 123 from being pushed upward.

[0028] A specific application of this embodiment is:

[0029] When in use, several sealing rings 132 are put on the inner ring 131, and then the sealing ring 2 133 is put on the left side of the water inlet pipe 111, and then the widened pipe 13 is connected to the water inlet pipe 111, so that the inner ring 131 enters the water inlet pipe 111, and the sealing ring 132 can play a sealing role to prevent air from entering the water inlet pipe 111. By fixing the water inlet pipe 111 and the widened pipe 13 with bolts, the sealing ring 2 133 is squeezed and can be sealed again, thereby improving the sealing effect and preventing air from entering. At the same time, the widened pipe 13 can make the sucked water flow enter the water inlet pipe 111 from large to small, so that the water flow is fuller and the air residue is reduced. At the same time, the water inlet pipe 111 is set to be high on the left and low on the right, which can reduce the gas in the water flow and reduce the cavitation. After the installation is completed, the motor 1 is started to drive the water pump 11 to work and pump water. The water flows into the water pump 11 through the widened pipe 13 and the water inlet pipe 111, and is discharged through the water outlet pipe 112 after being pressurized. The water will flow from the annular block 123 The upper opening 232 is discharged, and the conical block 231 can play a diversion function for the water flow to improve the flow effect. By turning the handle 241 clockwise to drive the rotating rod 124 to rotate, two friction rings are arranged at the contact position between the rotating rod 124 and the connecting pipe 121, which can increase the friction force and make the rotating rod 124 difficult to rotate. The rotating rod 124 will drive the elliptical push block 242 to rotate together, and the protruding position of the elliptical push block 242 will push the annular block 123 downward, and the vertical rod 233 will slide on the fixed block 222, and at the same time stretch the spring 235, so that when the elliptical push block 242 rotates counterclockwise, the annular block 123 can be reset upward under the elastic action of the spring 235, and the downward movement of the annular block 123 can reduce the opening 232, thereby reducing the discharge flow of water, and can make the water flow more fully stay in the water pump 11, thereby improving the effect of removing water flow gas, greatly reducing cavitation, and the position of the annular block 123 can be adjusted according to different needs to control the water flow.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A water pump cavitation protection device, comprising a motor (1), a water pump (11) being arranged on the left side of the motor (1), a water inlet pipe (111) being fixedly connected to the left side of the water pump (11), characterized in that: A water outlet pipe (112) is fixedly connected to the top of the water pump (11), a protection component (12) is arranged above the water outlet pipe (112), and the protection component (12) comprises a connecting pipe (121); An inner shell (122) is arranged inside the connecting tube (121), and a ring block (123) is slidably connected to the bottom of the inner shell (122). The connecting tube (121) and the inner shell (122) are both provided with a rotating hole on the front side, and a rotating rod (124) is rotatably connected to the inner wall of the rotating hole, and an elliptical push block (242) is fixedly connected to the back side of the rotating rod (124).

2. A water supply pump anti-cavitation protection device according to claim 1, characterized in that: The bottom of the connecting pipe (121) is fixedly connected to the top of the water outlet pipe (112); a plurality of support frames (221) are fixedly connected to the outer surface of the inner shell (122); the sides of the plurality of support frames (221) away from the inner shell (122) are fixedly connected to the inner wall of the connecting pipe (121); and a plurality of fixing blocks (222) are fixedly connected to the inner wall of the protection component (12).

3. A water supply pump anti-cavitation protection device according to claim 2, characterized in that: A conical block (231) is fixedly connected to the top of the inner wall of the annular block (123); a plurality of openings (232) are provided on the outer surface of the annular block (123); the plurality of openings (232) are arranged in a circular array; a plurality of vertical rods (233) are fixedly connected to the top of the annular block (123); the plurality of vertical rods (233) are arranged in a circular array.

4. A water supply pump anti-cavitation protection device according to claim 3, characterized in that: The tops of the plurality of vertical rods (233) are fixedly connected to the limiting blocks (234), the outer sides of the plurality of vertical rods (233) are sleeved with springs (235), the tops of the vertical rods (233) penetrate the fixed blocks (222) and extend to the outside, and the vertical rods (233) are slidably connected to the fixed blocks (222).

5. The anti-cavitation protection device for a water supply pump according to claim 4, characterized in that: The left side of the water inlet pipe (111) is fixedly connected to a widened pipe (13) by bolts, the right side of the widened pipe (13) is fixedly connected to an inner ring (131), the outer side of the inner ring (131) is sleeved with two sealing rings (132), the left side of the water inlet pipe (111) is provided with an annular groove, and the inside of the annular groove is sleeved with a sealing ring (133).

6. A water supply pump anti-cavitation protection device according to claim 5, characterized in that: The inner ring (131) is plugged into the water inlet pipe (111), the outer ring of the first sealing ring (132) contacts the inner ring of the water inlet pipe (111), and the left side of the second sealing ring (133) contacts the right side of the widened pipe (13).

7. The anti-cavitation protection device for a water supply pump according to claim 4, characterized in that: The front of the rotating rod (124) is fixedly connected to a rotating handle (241), the outer surface of the elliptical push block (242) contacts the top of the annular block (123), and the outer ring of the annular block (123) is slidably connected to the inner wall of the connecting pipe (121) and the inner wall of the water outlet pipe (112).

8. The anti-cavitation protection device for a water supply pump according to claim 4, characterized in that: The top of the spring (235) is fixedly connected to the bottom of the limiting block (234), the bottom of the spring (235) is fixedly connected to the top of the fixing block (222), and two friction rings are fixedly connected to the outer surface of the rotating rod (124).

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