A structure of a water pump outlet pipe

Abstract

The present invention discloses a water pump outlet pipe structure, aiming to solve the deficiency that the pressure sensor and the flow sensor on the water pump are separately arranged, occupying a relatively large volume, thus causing an increase in the volume of the water pump product. The invention includes a pipe body, a flow detector is installed inside the pipe body, a diversion groove is provided on the inner wall of the pipe body, a dead cavity is formed between the diversion groove and the outer wall of the flow detector, a detection hole communicating with the dead cavity is provided on the pipe body, and a pressure detector is installed at the position of the detection hole. The pressure sensor and the flow sensor on the water pump are both installed in the outlet pipe, combined into one, saving the internal space of the water pump and being beneficial to reducing the volume of the water pump.

Description

Technical Field

[0001] The present invention relates to a water pump technology, and more specifically, to a water pump outlet pipe structure. Background Art

[0002] When designing the position of the pressure sensor for water pump products on the market currently, a relatively large chamber is specifically designed, and the water flow in the chamber is flowing, which cannot guarantee the measurement accuracy. There are also specific designed positions for the flow sensors on the water pumps. Some are spring-type structures designed at the inlet, and some are Hall-type structures designed at the outlet water, but they are all arranged at separate positions from the pressure sensor. The separate arrangement of the pressure sensor and the flow sensor occupies a relatively large volume, thus causing an increase in the volume of the water pump product. Summary of the Invention

[0003] In order to overcome the above deficiencies, the present invention provides a water pump outlet pipe structure, in which both the pressure sensor and the flow sensor are installed in the outlet pipe, combined into one, saving the internal space of the water pump and being beneficial to reducing the volume of the water pump.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: A water pump outlet pipe structure includes a pipe body. A flow detector is installed inside the pipe body. A diversion groove is provided on the inner wall of the pipe body. A dead chamber is formed between the diversion groove and the outer wall of the flow detector. A detection hole communicating with the dead chamber is provided on the pipe body, and a pressure detector is installed at the position of the detection hole.

[0005] Both the flow detector and the pressure detector are installed on the pipe body of the water pump outlet pipe. One end of the outlet pipe is installed on the water pump, and the other end serves as the water outlet of the water pump. The water flow discharged by the water pump passes through the pipe body and then is discharged outward. The flow detector inside the pipe body detects the flow rate of the water flow. The water flow inside the pipe body enters the dead chamber, and the pressure detector at the position of the detection hole detects the water pressure in the dead chamber. Since the water in the dead chamber is not flowing, the accuracy of water pressure detection is greatly improved. Both the pressure sensor and the flow sensor on the water pump are installed in the outlet pipe, combined into one, saving the internal space of the water pump and being beneficial to reducing the volume of the water pump.

[0006] Preferably, the pressure detector includes a mounting seat. A boss is provided on the mounting seat. The boss is tightly inserted and connected with the detection hole. The mounting seat is fixedly connected with the pipe body, and a pressure sensing head is installed on the boss. The boss on the mounting seat is inserted into the detection hole, with good sealing performance. The pressure sensing head is installed on the boss, facilitating the detection of water pressure.

[0007] Preferably, a wire harness plug connector is provided on the outer wall of the mounting seat. The wire harness plug connector facilitates the connection of the wire harness.

[0008] Preferably, a connecting plate is provided on the mounting base, an extension cylinder extending outward is provided at a position corresponding to the detection hole on the pipe body, and the boss is connected to the extension cylinder; connecting columns are provided on both the upper and lower sides of the extension cylinder on the pipe body, and both connecting columns are fixedly connected to the connecting plate.

[0009] The setting of the extension cylinder increases the length of the detection hole, makes the water in the detection hole more stable and not easy to flow, and ensures the accuracy of the water pressure detection.

[0010] Preferably, the flow detector includes a mounting cylinder and a rotating shaft rotatably mounted in the mounting cylinder. A blade driven by the medium to operate is mounted on the rotating shaft, and a magnetoelectric proximity sensor for sensing the blade is mounted on the outer wall of the pipe body. During flow detection, the water flow in the pipe body drives the blade to rotate. The greater the flow rate, the faster the blade rotates. The magnetoelectric proximity sensor is used to sense the blade, so as to realize the detection of the rotation of the blade, and then calculate the size of the flow rate.

[0011] Preferably, a guide vane is mounted below the blade in the mounting cylinder. The guide vane plays a very good guiding role and makes the blade easier to be driven by the water flow to operate.

[0012] Preferably, a convex ring is provided at the lower position inside the pipe body, the lower end of the flow detector is supported on the convex ring, and a positioning ring is mounted at the upper end position of the flow detector inside the pipe body, and the positioning ring is stuck on the inner wall of the pipe body.

[0013] The flow detector is positioned between the convex ring and the positioning ring, and the installation is stable and reliable.

[0014] Preferably, the lower end of the dead cavity is closed, the upper end of the dead cavity communicates with the inside of the pipe body, and the detection hole is close to the lower part of the dead cavity. The water flow enters the dead cavity from the upper end of the dead cavity. Since the water flow flows from bottom to top, there will be no water flow after the dead cavity is filled with water, ensuring the accuracy of the water pressure detection.

[0015] In another solution, a drainage hole is provided below the diversion groove on the pipe body. The upper end of the drainage hole communicates with the dead cavity, and the lower end of the drainage hole extends to the inner wall of the pipe body below the flow detector; a isolation sleeve is mounted at the upper end of the drainage hole, and an upper positioning seat and a lower positioning seat are provided inside the isolation sleeve. A liquid outlet gap is formed between the upper positioning seat and the inner wall of the isolation sleeve, and a liquid inlet gap is formed between the lower positioning seat and the inner wall of the isolation sleeve. An inclined upper sealing surface is provided on the upper positioning seat; a closing block is mounted on the lower positioning seat and is arranged to move up and down. A lower sealing surface adapted to the upper sealing surface is provided on the closing block. A return spring is connected between the closing block and the lower positioning seat. A pull rope is connected to the closing block, and a floating ball is connected to the pull rope; after the dead cavity is filled with water, the floating ball floats upward out of the diversion groove, and the closing block is pulled upward through the pull rope, thereby closing the liquid outlet gap.

[0016] When the water pump is used for the first time, there is no water source in the pump body and no water in the pipe body. Therefore, the pull rope will not be subjected to the upward pulling force of the floating ball. At this time, there is a gap between the lower sealing surface and the upper sealing surface, and the liquid outlet gap is opened. After the water flow in the water pump is discharged outward into the pipe body, the diversion hole introduces the water flow in the pipe body into the dead cavity. When the dead cavity is filled with water, the floating ball floats upward out of the diversion groove, and the closing block is pulled upward through the pull rope, thereby closing the liquid outlet gap, so that the lower end of the dead cavity is closed. Through this structural setting, the air in the dead cavity can be completely emptied during the process of filling the water into the dead cavity, avoiding the influence of the residual air in the dead cavity on the accuracy of the water pressure detection. After the shutdown, if there is no water in the pipe body, under the combined action of gravity and the return spring, the closing block moves downward to return to its position, opening the liquid outlet gap, so that the air in the dead cavity can be completely discharged when the water pump works next time.

[0017] Preferably, a limiting plate for limiting the floating ball is provided above the detection hole on the side wall of the diversion groove, and the floating ball is placed above the limiting plate.

[0018] The limiting plate positions the floating ball to prevent the floating ball from getting stuck in the detection hole position, ensuring the reliable lifting and lowering of the floating ball in the diversion groove.

[0019] Compared with the prior art, the beneficial effects of the present invention are: (1) The pressure sensor and the flow sensor on the water pump are both installed in the outlet pipe, combined into one, saving the internal space of the water pump and being beneficial to reducing the volume of the water pump; (2) The pressure detection position in the pipe body is set in the dead cavity, and there is no water flow, greatly improving the accuracy of the water pressure detection; (3) The air is completely discharged during the process of filling the dead cavity with water, avoiding the influence of the residual air in the dead cavity on the accuracy of the water pressure detection. Description of the Drawings

[0020] Figure 1 is a structural schematic diagram of the present invention;

[0021] Figure 2 is an exploded view of the present invention;

[0022] Figure 3 is a cross-sectional view of Embodiment 1 of the present invention;

[0023] Figure 4 is a cross-sectional view of Embodiment 2 of the present invention;

[0024] Figure 5 is a connection structural schematic diagram of the isolation sleeve of Embodiment 2 of the present invention;

[0025] In the figure: 1, pipe body; 2, flow detector; 3, diversion groove; 4, dead space; 5, detection hole; 6, pressure detector; 7, mounting seat; 8, boss; 9, wire harness connector; 10, connecting plate; 11, extension cylinder; 12, connecting column; 13, mounting cylinder; 14, rotating shaft; 15, blade; 16, magnetoelectric proximity sensor; 17, connecting seat; 18, groove; 19, diversion vane; 20, convex ring; 21, positioning ring; 22, upper cylinder body; 23, lower cylinder body; 24, upper bracket; 25, lower bracket; 26, drainage hole; 27, isolation sleeve; 28, upper positioning seat; 29, lower positioning seat; 30, liquid outlet gap; 31, liquid inlet gap; 32, upper sealing surface; 33, sealing block; 34, lower sealing surface; 35, return spring; 36, positioning groove; 37, pull rope; 38, floating ball; 39, limiting plate. Detailed implementation mode

[0026] The technical solution of the present invention will be further specifically described below through specific embodiments in conjunction with the drawings:

[0027] Embodiment 1: A water pump outlet pipe structure (see attached Figure 1 to attached Figure 3 ), including a pipe body 1, the lower end of the pipe body is the water inlet, the upper end of the pipe body is the water outlet, the lower end of the pipe body is connected to the pump body, and the pipe body is vertically installed on the pump body. A flow detector 2 is installed inside the pipe body, a diversion groove 3 is provided on the inner wall of the pipe body, a dead space 4 is formed between the diversion groove and the outer wall of the flow detector, a detection hole 5 communicating with the dead space is provided on the pipe body, and a pressure detector 6 is installed at the position of the detection hole.

[0028] The pressure detector includes a mounting seat 7, a circular boss 8 is provided on the mounting seat, the boss is tightly inserted and connected with the detection hole, a sealing ring is arranged between the boss and the detection hole, the mounting seat is fixedly connected with the pipe body, and a pressure sensing head is installed on the boss. A wire harness connector 9 is arranged on the outer wall of the mounting seat. A connecting plate 10 is arranged on the mounting seat, an extension cylinder 11 extending outwards is provided at a position corresponding to the detection hole on the pipe body, and the boss is connected with the extension cylinder; connecting columns 12 are provided on both sides of the extension cylinder on the pipe body, the outer walls of the connecting columns and the outer wall of the extension sleeve are connected together, and both connecting columns are fixedly connected with the connecting plate.

[0029] The flow detector includes an installation cylinder 13 and a rotating shaft 14 rotatably installed inside the installation cylinder. A blade 15 driven by the medium to operate is installed on the rotating shaft. A magnetoelectric proximity sensor 16 for sensing the blade is installed on the outer wall of the pipe body. The blade can be sensed by the magnetoelectric proximity sensor when it passes by the magnetoelectric proximity sensor. A connection seat 17 is installed on the outer wall of the pipe body. A groove 18 is provided on the connection seat, and the magnetoelectric proximity sensor is installed on the bottom surface of the groove. A flow guide vane 19 is installed below the blade inside the installation cylinder. A convex ring 20 is provided at the lower position inside the pipe body. The lower end of the flow detector is supported on the convex ring. A positioning ring 21 is installed at the upper position of the flow detector inside the pipe body. The positioning ring gradually converges from top to bottom along the axis and is stuck on the inner wall of the pipe body. The installation cylinder includes an upper cylinder body 22 and a lower cylinder body 23 connected together. An upper bracket 24 is provided inside the upper cylinder body. The upper end of the rotating shaft is rotatably installed on the upper bracket. A lower bracket 25 is provided inside the lower cylinder body. The flow guide vane is arranged between the lower bracket and the lower cylinder body. The lower end of the rotating shaft is rotatably installed on the lower bracket. The blade is arranged between the lower part of the upper cylinder body and the upper part of the lower cylinder body.

[0030] The lower end of the dead volume is closed, and the upper end of the dead volume communicates with the inside of the pipe body. The detection hole is close to the lower position of the dead volume. After the water flow inside the pipe body fills the dead volume through the upper end opening of the dead volume, there is no longer water flow in the dead volume, which is beneficial to ensuring the accuracy of pressure detection.

[0031] Both the flow detector and the pressure detector are installed on the pipe body of the water pump outlet pipe. One end of the outlet pipe is installed on the water pump, and the other end is the water pump outlet. The water flow discharged by the water pump passes through the pipe body and then is discharged outward. The flow detector inside the pipe body detects the flow rate of the water flow. The water flow inside the pipe body enters the dead volume, and the pressure detector at the detection hole position detects the water pressure inside the dead volume. Since the water in the dead volume is not flowing, the accuracy of water pressure detection is greatly improved. The pressure sensor and the flow sensor on the water pump are both installed inside the outlet pipe, combining the two into one, saving the internal space of the water pump and being beneficial to reducing the volume of the water pump.

[0032] Embodiment 2: A structure of a water pump outlet pipe (see attached Figure 4 and attached Figure 5),(its structure is similar to that of Embodiment 1. The main difference is that in this embodiment, a drainage hole 26 is provided below the diversion groove on the pipe body. The upper end of the drainage hole is communicated with the dead cavity, and the lower end of the drainage hole extends to the inner wall of the pipe body below the flow detector; an isolation sleeve 27 is installed at the upper end of the drainage hole. An upper positioning seat 28 and a lower positioning seat 29 are arranged inside the isolation sleeve. A liquid outlet gap 30 is formed between the upper positioning seat and the inner wall of the isolation sleeve, and a liquid inlet gap 31 is formed between the lower positioning seat and the inner wall of the isolation sleeve. An inclined upper sealing surface 32 is provided on the upper positioning seat; a closing block 33 is installed on the lower positioning seat and is arranged to move up and down. A lower sealing surface 34 adapted to the upper sealing surface is provided on the closing block. A return spring 35 is connected between the closing block and the lower positioning seat. A positioning groove 36 is provided on the lower positioning seat, and the lower end of the closing block is placed in the positioning groove. A pull rope 37 is connected to the closing block, and a floating ball 38 is connected to the pull rope; after the dead cavity is filled with water, the floating ball floats upward out of the diversion groove, and the closing block is pulled upward through the pull rope, thereby closing the liquid outlet gap. A limiting plate 39 for limiting the floating ball is provided above the detection hole on the side wall of the diversion groove, and the floating ball is placed above the limiting plate. Other structures are the same as those in Embodiment 1.

[0033] When the water pump is used for the first time, there is no water source in the pump body and no water in the pipe body. Therefore, the pull rope will not be subjected to the upward pulling force of the floating ball. At this time, there is a gap between the lower sealing surface and the upper sealing surface, and the liquid outlet gap is opened. After the water flow in the water pump is discharged outward into the pipe body, the drainage hole introduces the water flow in the pipe body into the dead cavity. When the dead cavity is filled with water, the floating ball floats upward out of the diversion groove, and the closing block is pulled upward through the pull rope, thereby closing the liquid outlet gap, so that the lower end of the dead cavity is closed. Through this structural setting, the air in the dead cavity can be completely emptied during the process of filling the water into the dead cavity, avoiding the influence of the residual air in the dead cavity on the accuracy of the water pressure detection. After shutdown, if there is no water in the pipe body, under the combined action of gravity and the return spring, the closing block moves downward to return to its position, opening the liquid outlet gap, so that the air in the dead cavity can be emptied when the water pump works next time.

[0034] The above-described embodiments are only preferred solutions of the present invention, and do not impose any form of limitation on the present invention. There are other variations and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. A water pump outlet pipe structure, Its characteristics are: The invention comprises a pipe body, a flow detector is installed in the pipe body, a flow guide groove is arranged on the inner wall of the pipe body, a dead cavity is formed between the flow guide groove and the outer wall of the flow detector, a detection hole connected with the dead cavity is arranged on the pipe body, and a pressure detector is installed at the detection hole position; a drainage hole is arranged below the flow guide groove on the pipe body, the upper end of the drainage hole is connected with the dead cavity, and the lower end of the drainage hole extends to the inner wall of the pipe body below the flow detector; an isolation sleeve is installed at the upper end of the drainage hole, an upper positioning seat and a lower positioning seat are arranged in the isolation sleeve, a liquid outlet gap is formed between the upper positioning seat and the inner wall of the isolation sleeve, and the lower positioning seat and the isolation sleeve are connected to the dead cavity. A liquid inlet gap is formed between the inner walls of the sleeve, and an upper sealing surface is inclined on the upper positioning seat; a closing block that moves up and down is installed on the lower positioning seat, and a lower sealing surface that matches the upper sealing surface is provided on the closing block, and a reset spring is connected between the closing block and the lower positioning seat, and a pull rope is connected to the closing block, and a float is connected to the pull rope; after the dead cavity is filled with water, the float floats upward out of the guide groove, and the closing block is pulled upward by the pull rope, thereby closing the liquid outlet gap; a limit plate for limiting the float is provided above the detection hole on the side wall of the guide groove, and the float is placed above the limit plate.

2. A water pump outlet pipe structure according to claim 1, Its characteristics are: The pressure detector comprises a mounting seat, a boss is arranged on the mounting seat, the boss is tightly plug-connected with the detection hole, the mounting seat is tightly connected with the pipe body, and a pressure sensing head is installed on the boss.

3. A water pump outlet pipe structure according to claim 2, Its characteristics are: A wiring harness connector is arranged on the outer wall of the mounting seat.

4. A water pump outlet pipe structure according to claim 2, The feature is that the mounting seat A connecting plate is arranged on the top, an extension tube extending outward is arranged on the tube body at a position corresponding to the detection hole, and the boss is connected to the extension tube; connecting columns are arranged on both upper and lower sides of the extension tube on the tube body, and the two connecting columns are fastened to the connecting plate.

5. A water pump outlet pipe structure according to claim 1, Its characteristics are: The flow detector comprises a mounting tube, a rotating shaft rotatably mounted in the mounting tube, a blade driven by a medium is mounted on the rotating shaft, and a magnetoelectric proximity sensor for sensing the blade is mounted on the outer wall of the tube body.

6. A water pump outlet pipe structure according to claim 5, Its characteristics are: Install the guide vane below the blades in the installation tube.

7. A water pump outlet pipe structure according to claim 1, Its characteristics are: A convex ring is arranged at the lower part of the pipe body, the lower end of the flow detector is supported on the convex ring, a positioning ring is installed at the upper end of the flow detector in the pipe body, and the positioning ring is clamped on the inner wall of the pipe body.

8. A water pump outlet pipe structure according to any one of claims 1 to 7, Its characteristics are: The lower end of the dead space is closed, the upper end of the dead space is connected to the tube body, and the detection hole is close to the lower part of the dead space.

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