Vacuum flow control pump

Abstract

The utility model discloses a vacuum flow control pump, which relates to the technical field of cooling water pumps, and comprises a pump body, an impeller, a water pump and a water pump, the mounting cavity is formed in the pump body; one end of the vacuumizing pipe communicates with the mounting cavity, and the other end of the vacuumizing pipe is connected with the vacuum pump; the supporting ring is arranged in the mounting cavity, a reset spring is arranged between the end, facing the impeller, of the supporting ring and the mounting cavity, a transmission rod is mounted at the end, facing the impeller, of the supporting ring, and the end, facing the impeller, of the transmission rod extends out of the mounting cavity and is connected with a shielding ring in the pump body. The flow of the vacuum flow pump can be controlled according to the running state of the engine, the energy utilization rate of the engine is effectively improved, and the purposes of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] This utility model relates to the field of cooling water pump technology, and in particular to a vacuum flow control pump. Background Technology

[0002] When a conventional engine coolant pump is working, the engine drives the pump bearings and impeller to rotate via a pulley. The coolant in the pump is rotated along with the impeller and, under centrifugal force, is thrown towards the edge of the pump housing, generating pressure. It then flows out through the outlet or water pipe. At the center of the impeller, the pressure decreases due to the coolant being thrown out, and the coolant in the radiator is drawn into the impeller through the water pipe due to the pressure difference between the pump inlet and the impeller center, thus achieving a reciprocating circulation of the coolant.

[0003] However, conventional engine cooling water pumps do not have a water pump flow rate adjustment function and cannot adjust the flow rate according to the engine's operating status, resulting in low energy utilization. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a vacuum flow control pump.

[0005] To solve the above technical problems, the technical solution of this utility model is as follows:

[0006] A vacuum flow control pump, comprising:

[0007] The pump body has an impeller rotatably mounted at one end;

[0008] The mounting cavity is located within the pump body;

[0009] The vacuum tube has one end connected to the mounting cavity and the other end connected to the vacuum pump.

[0010] A support ring is set inside the mounting cavity. A return spring is provided between the end of the support ring facing the impeller and the mounting cavity. A transmission rod is installed at the end of the support ring facing the impeller. The end of the transmission rod facing the impeller extends out of the mounting cavity and is connected to the shielding ring inside the pump body.

[0011] When the air in the mounting cavity is extracted through the vacuum tube, the support ring moves toward the impeller and the shielding ring is placed on the outside of the impeller.

[0012] In a preferred embodiment of the vacuum flow control pump of this utility model, the support ring is provided with a mounting hole for installing a reset spring.

[0013] In a preferred embodiment of the vacuum flow control pump of this utility model, a fixing member for fixing the end of the reset spring is provided in the mounting hole.

[0014] In a preferred embodiment of the vacuum flow control pump of this utility model, the support ring has a mounting groove on its side for mounting the transmission rod.

[0015] As a preferred embodiment of the vacuum flow control pump of this utility model, the mounting groove is a T-shaped groove, and one end of the transmission rod is provided with a mounting part, the shape of which is adapted to the shape of the T-shaped groove so that the mounting part can be embedded in the mounting groove.

[0016] As a preferred embodiment of the vacuum flow control pump of this utility model, a plurality of return springs and transmission rods are provided on the support ring. The plurality of return springs and transmission rods are evenly arranged in a ring on the support ring, and the return springs and transmission rods are arranged sequentially at intervals.

[0017] As a preferred embodiment of the vacuum flow control pump of this utility model, the shielding ring includes a cylindrical side wall and an annular end face fixedly connected to one end of the side wall, the diameter of the side wall being larger than the diameter of the impeller.

[0018] As a preferred embodiment of the vacuum flow control pump of this utility model, the side of the end of the transmission rod connected to the shielding ring is provided with an annular limiting groove, and the end face of the shielding ring is provided with a limiting hole and a through hole communicating with the limiting hole at the connection of the transmission rod.

[0019] The diameter of the through hole is larger than the diameter of the transmission rod, the limiting hole is a waist hole, and the width of the limiting hole is smaller than the diameter of the transmission rod. The width of the limiting hole is greater than the difference between the diameter of the transmission rod and the width of the limiting groove.

[0020] The beneficial effects of this utility model are:

[0021] (1) This utility model can adjust the flow rate of the vacuum flow control pump according to the engine's operating status. When the engine is cold-started, the flow rate of the vacuum flow control pump is reduced so that the engine can heat up quickly and reach the engine's optimal operating temperature. When the engine reaches the optimal operating temperature, the flow rate of the vacuum flow pump is increased so that the cooling water pump can start the engine cooling cycle.

[0022] (2) This utility model uses a vacuum pump to extract the air from the installation cavity, and then uses air pressure to control the support plate to descend, thereby reducing the flow rate of the vacuum pump. After the vacuum pump is turned off, the support plate can be automatically raised by the elastic force of the reset spring, which is convenient to operate.

[0023] (3) In this utility model, the transmission rod and the support rod are installed together by the mounting groove and the mounting part, and the transmission rod and the shielding ring are installed together by the limiting groove and the limiting hole. This not only makes the installation convenient, but also realizes the detachable connection. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A cross-sectional schematic diagram of the vacuum flow control pump provided by this utility model;

[0026] Figure 2 A cross-sectional schematic diagram of a vacuum flow control pump with the impeller cover inside the shielding ring;

[0027] Figure 3 A schematic diagram of the support ring in the vacuum flow control pump provided by this utility model;

[0028] Figure 4 for Figure 3 Side view;

[0029] Figure 5 A schematic diagram of the shielding ring in the vacuum flow control pump provided by this utility model;

[0030] Figure 6 A schematic diagram of the transmission rod in the vacuum flow control pump provided by this utility model;

[0031] The components are: 1. Pump body; 2. Impeller; 3. Mounting cavity; 4. Vacuum tube; 5. Support ring; 6. Return spring; 7. Transmission rod; 8. Shielding ring; 9. Mounting hole; 10. Mounting groove; 11. Groove; 12. Limiting groove; 13. Limiting hole; 14. Through hole; 15. Mounting part. Detailed Implementation

[0032] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0033] Figure 1 This is a cross-sectional schematic diagram of the vacuum flow control pump provided in an embodiment of this application. The device includes a pump body 1, a vacuum pipe 4, a support ring 5, and a shielding ring 8. Air is extracted from the pump body 1 through the vacuum pipe 4, causing the support ring 5 to move downwards under atmospheric pressure. This, in turn, moves the shielding ring 8 downwards, covering the outside of the impeller 2, thereby adjusting the flow rate of the vacuum flow control pump.

[0034] For details, see Figure 1A roughly hollow cylindrical mounting cavity 3 is provided in the upper part of the pump body 1. This mounting cavity 3 is connected to a vacuum pipe 4 connected to the side wall of the pump body 1. The other end of the vacuum pipe 4 is connected to the vehicle-mounted vacuum pump. When the vehicle-mounted vacuum pump is running, the air in the mounting cavity 3 can be extracted through the vacuum pipe 4.

[0035] The support ring 5 is disposed within the mounting cavity 3 and can move up and down within the mounting cavity 3. (See also...) Figure 1 A return spring 6 is installed at the end of the support ring 5 facing the impeller 2, that is, between the lower end of the support ring 5 and the mounting cavity 3. One end of the return spring 6 is connected to the lower end face of the support ring 5, and the other end of the return spring 6 abuts against the end face of the mounting cavity 3, that is, the axis of the return spring 6 is parallel to the axis of the pump body 1.

[0036] It should be noted that in the initial state, when the return spring 6 is only subjected to the gravity of the support ring 5, the support ring 5 is located at the upper part of the mounting cavity 3. When the vehicle vacuum pump extracts the air from the mounting cavity 3 through the vacuum tube 4, the support ring 5 will move downward under the action of air pressure, thus compressing the return spring 6.

[0037] A transmission rod 7 is also installed at the lower end of the support ring 5, facing the impeller 2. The axis of the transmission rod 7 is also parallel to the axis of the pump body 1. See [link / reference] Figure 1 The end of the transmission rod 7 facing the impeller 2, that is, the lower end of the transmission rod 7, extends to the outside of the mounting cavity 3 and is connected to the shielding ring 8 located below the mounting cavity 3 inside the pump body 1.

[0038] When the air in the mounting cavity 3 is extracted through the vacuum tube 4, the support ring 5 moves toward the impeller 2 and drives the shielding ring 8 to move downward through the transmission rod 7.

[0039] A plurality of return springs 6 and a plurality of transmission rods 7 are mounted on the support ring 5. These return springs 6 and transmission rods 7 are evenly arranged in a ring on the support ring 5, and are spaced apart sequentially. In this embodiment, three return springs 6 and three transmission rods 7 are provided.

[0040] For a better option, see [link to previous section]. Figure 3 A mounting hole 9 for installing a return spring 6 is provided on the lower end face of the support ring 5, and a fixing member for fixing the end of the return spring 6 is provided in the mounting hole 9. The fixing member can be a fixing rod, and a limit block is provided on the fixing rod. The return spring 6 can be detachably and fixedly installed by rotating the return spring 6 so that the limit block is located between two adjacent turns of the return spring 6. It should be noted that other types of fixing members can also be used, as long as they can fix the return spring 6 in the mounting hole 9.

[0041] A mounting groove 10 for mounting the transmission rod 7 is provided on the side of the support ring 5, extending from the outer side of the support ring 5 to the inner side. A slot 11 communicating with the mounting groove 10 is provided on the lower end face of the support ring 5. A mounting part 15 is provided at the upper end of the transmission rod 7, and the shape of the mounting part 15 is adapted to the shape of the mounting groove 10, allowing the mounting part 15 to be embedded in the mounting groove 10, with the rod body of the transmission rod 7 located within the slot 11. Through the cooperation of the mounting groove 10 and the mounting part 15, a detachable connection between the transmission rod 7 and the support ring 5 is achieved.

[0042] See Figure 5 The shielding ring 8 includes a cylindrical sidewall and an annular end face fixedly connected to the upper end of the sidewall. A transmission rod 7 is fixedly connected to the end face of the shielding ring 8, thereby driving the shielding ring 8 to move synchronously. The diameter of the sidewall of the shielding ring 8 is larger than the diameter of the impeller 2, and the thickness of the sidewall of the shielding ring 8 is larger than the thickness of the impeller 2 body, so that when the shielding ring 8 moves downwards, it can enclose the impeller 2, thereby reducing the flow rate of the vacuum flow control pump.

[0043] Preferably, an annular limiting groove 12 is provided on the side of the lower end of the transmission rod 7, at the end where the transmission rod 7 connects to the blocking ring 8. Correspondingly, a limiting hole 13 and a through hole 14 communicating with the limiting hole 13 are provided on the end face of the blocking ring 8 at the connection point with the transmission rod 7.

[0044] The diameter of the through hole 14 is larger than the diameter of the transmission rod 7, allowing the transmission rod 7 to extend into the through hole 14. The limiting hole 13 is an oblong hole, the width of which is smaller than the diameter of the transmission rod 7, and its width is greater than the difference between the diameter of the transmission rod 7 and the width of the limiting groove 12. In this way, when the limiting groove 12 of the transmission rod 7 is engaged in the limiting hole 13, a detachable connection between the transmission rod 7 and the shielding ring 8 can be achieved.

[0045] When the aforementioned vacuum flow control pump is operating, if the engine is started cold, the vehicle ECU controls the on-board vacuum pump to extract air from the mounting cavity 3, causing the support ring 5 to move downwards. This, in turn, drives the shielding ring 8 downwards via the transmission rod 7, covering the impeller 2 and reducing the flow rate of the vacuum flow control pump. This allows the engine to warm up rapidly and reach its optimal operating temperature. When the engine reaches its optimal operating temperature, the vehicle ECU controls the on-board vacuum pump to stop operating. The support ring 5 returns to its original position under the action of the return spring 6, moving upwards and causing the shielding ring 8 to return to its original position, allowing the cooling water pump to begin its engine cooling cycle.

[0046] Therefore, the technical solution of this application can control the flow rate of the vacuum flow pump according to the engine's operating status, effectively improving the engine's energy utilization rate and achieving the goal of energy saving and emission reduction.

[0047] In addition to the above embodiments, this utility model may have other implementation methods; all technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A vacuum flow control pump, characterized in that: include: Pump body (1), with an impeller (2) rotatably mounted on one end; The mounting cavity (3) is located inside the pump body (1); A vacuum tube (4) is connected at one end to the mounting cavity (3) and at the other end to a vacuum pump; A support ring (5) is provided in the mounting cavity (3). A return spring (6) is provided between the end of the support ring (5) facing the impeller (2) and the mounting cavity (3). A transmission rod (7) is installed on the end of the support ring (5) facing the impeller (2). The end of the transmission rod (7) facing the impeller (2) extends to the outside of the mounting cavity (3) and is connected to the shielding ring (8) in the pump body (1). When the air in the mounting cavity (3) is extracted through the vacuum tube (4), the support ring (5) moves toward the impeller (2) and the shielding ring (8) covers the outside of the impeller (2).

2. The vacuum flow control pump according to claim 1, characterized in that: The support ring (5) has a mounting hole (9) for installing the reset spring (6).

3. The vacuum flow control pump according to claim 2, characterized in that: A fixing member for fixing the end of the reset spring (6) is provided in the mounting hole (9).

4. The vacuum flow control pump according to claim 2, characterized in that: The side of the support ring (5) is provided with a mounting groove (10) for mounting the transmission rod (7).

5. The vacuum flow control pump according to claim 4, characterized in that: The mounting groove (10) is a T-shaped groove, and one end of the transmission rod (7) is provided with a mounting part (15), and the shape of the mounting part (15) is adapted to the shape of the T-shaped groove so that the mounting part (15) can be embedded in the mounting groove (10).

6. The vacuum flow control pump according to claim 5, characterized in that: The support ring (5) is provided with a plurality of return springs (6) and transmission rods (7). The plurality of return springs (6) and the plurality of transmission rods (7) are evenly arranged in a ring on the support ring (5), and the return springs (6) and the transmission rods (7) are arranged at intervals in sequence.

7. The vacuum flow control pump according to claim 1, characterized in that: The shielding ring (8) includes a cylindrical sidewall and an annular end face fixedly connected to one end of the sidewall. The diameter of the sidewall is larger than the diameter of the impeller (2).

8. The vacuum flow control pump according to claim 7, characterized in that: The transmission rod (7) has an annular limiting groove (12) on one side of the end connected to the shielding ring (8). The end face of the shielding ring (8) has a limiting hole (13) and a through hole (14) communicating with the limiting hole (13) at the connection point of the transmission rod (7). The diameter of the through hole (14) is greater than the diameter of the transmission rod (7), the limiting hole (13) is a waist hole, and the width of the limiting hole (13) is less than the diameter of the transmission rod (7). The width of the limiting hole (13) is greater than the difference between the diameter of the transmission rod (7) and the width of the limiting groove (12).

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