Water pump forced circulation cooling system

Abstract

The invention provides a water pump forced circulation cooling system which comprises a water pump shell, a centrifugal impeller is arranged in the water pump shell, a circulating water diversion flow channel is formed in a shell body of the water pump shell, and a water inlet of the circulating water diversion flow channel is formed in the outer portion of the water outlet side of the centrifugal impeller in an abutting mode. The water inlet area of the water pump shell is provided with a circulating water return flow channel. Flame extinguishing exhaust in the system is communicated with a circulating water diversion flow channel through a water diversion pipe to complete cooling water inflow, and high-pressure water on the water outlet side of an impeller of the centrifugal water pump is introduced into a cooling cavity of the flame extinguishing exhaust. Cooling water in a cooling cavity of the flame-extinguishing exhaust is led to a circulating water return flow channel through a water return pipe, and the circulating water flow can take away most heat in the flame-extinguishing exhaust cavity, so that flame-extinguishing exhaust cooling is realized, and an operator is prevented from being scalded due to high temperature of exhaust during operation of a water pump of an internal combustion engine.

Description

Technical Field

[0001] The present invention mainly relates to the field of water pumps, and in particular to a water pump forced circulation cooling system. Background Art

[0002] When a water pump is powered by an internal combustion engine, such as a gasoline or diesel engine, the exhaust temperature is relatively high. Unlike the liquid- or air-cooled components within the engine's cylinder block, the exhaust pipe typically uses passive cooling. This can easily cause burns to operators while the equipment is in operation, or even when the equipment is being moved.

[0003] The inventor proposed a water pump forced circulation cooling system, in which water outlet points and return points are set near the water outlet side and water inlet side of the system respectively. A circulating water circuit is designed through the pressure difference between the water outlet side and the water inlet side of the system. At the same time, the existing exhaust pipe structure is modified, and a flow channel structure for water circulation is added to the designed flame extinguishing exhaust to complete the heat dissipation design of the flame extinguishing exhaust, effectively avoiding the situation where the operator is scalded by the high temperature of the flame extinguishing exhaust. Summary of the Invention

[0004] 1. Problems to be solved by the invention: The present invention provides a water pump forced circulation cooling system for solving the technical problem mentioned in the background art above that the exhaust end of the existing internal combustion engine powered water pump has a high temperature and is prone to scalding the operator.

[0005] 2. Technical solution: To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a water pump forced circulation cooling system, comprising a water pump casing, a centrifugal impeller is provided inside the water pump casing, a circulating water diversion channel is opened on the shell of the water pump casing, the water inlet of the circulating water diversion channel is arranged close to the water outlet side of the centrifugal impeller, and a circulating water return channel is opened in the water inlet area of ​​the water pump casing.

[0006] The water pumping assembly of a centrifugal water pump consists of a water pump casing and a centrifugal impeller. When the centrifugal impeller rotates in the water pump casing, there is an obvious pressure difference between the water inlet area of ​​the water pump casing and the inner wall edge of the water pump casing. A water channel can be designed between the outlet of the circulating water inlet flow channel and the water inlet of the circulating water return flow channel. Combined with the working water supply pressure of the centrifugal water pump product, the water in the water channel can have a higher flow rate. This water channel added in addition to the original inlet and outlet water channels of the water pump casing can cool the relevant components of the entire water pump.

[0007] In this technical solution, a return water pipe and an inlet water pipe can be connected to the traditional water inlet and outlet pipes of the water pump casing to realize the design of a forced circulation cooling system for the water pump. Compared with the above solution, this solution does not have an advantage in equipment miniaturization.

[0008] Furthermore, it also includes a flame-extinguishing exhaust, the water inlet of the flame-extinguishing exhaust is connected to the water outlet of the water diversion pipe, the water inlet of the water diversion pipe is connected to the water outlet of the circulating water diversion channel, the return water outlet of the flame-extinguishing exhaust is connected to the water inlet of the return water pipe, and the water outlet of the return water pipe is connected to the water inlet of the circulating water return channel.

[0009] The flame extinguishing exhaust gas is connected to the circulating water inlet flow channel and the circulating water return flow channel through the inlet pipe and the return pipe. Combined with the centrifugal impeller in the water pump casing to pump water, the circulating water channel design of the water pump casing, circulating water inlet flow channel, inlet pipe, flow channel, return pipe and circulating water return flow channel is completed. The water in the circulating water channel can be continuously circulated and renewed along with the pumping work of the centrifugal impeller, avoiding the water in the circulating water channel from heating up and causing the cooling effect to be reduced.

[0010] Furthermore, a water outlet pipe is fixedly provided on the water outlet side of the water pump casing, and an internal combustion engine can be connected to the pump seat of the water pump casing, and the power output shaft of the internal combustion engine is connected to the centrifugal impeller.

[0011] The water outlet pipe and the water inlet area of ​​the water pump casing are the conventional water inlet and outlet water channel structures of the water pump casing. The power source of the centrifugal water pump adopts an internal combustion engine. According to the performance design requirements such as the head of the water pump, different types of internal combustion engines can be selected to meet the output power design requirements of the water pump.

[0012] Furthermore, the air inlet of the flame-extinguishing exhaust is connected to the exhaust port of the internal combustion engine, and a flame-extinguishing shell is fixedly provided on the inner wall of the flame-extinguishing exhaust close to the air inlet, and a through hole is fixedly provided on the outer side of the flame-extinguishing shell, which is connected to the exhaust hole of the flame-extinguishing exhaust. A cooling water flow channel is formed between the outer side of the flame-extinguishing shell and the inner side of the flame-extinguishing exhaust, and the water inlet side of the cooling water flow channel is connected to the water outlet of the water inlet pipe, and the water outlet of the cooling water flow channel is connected to the water inlet of the return water pipe, and the outer side of the flame-extinguishing shell is immersed in the flow channel.

[0013] Furthermore, a flame extinguishing baffle is fixedly provided at the air inlet of the flame extinguishing exhaust, and the flame extinguishing baffle is arranged in the flame extinguishing shell.

[0014] The flame extinguishing exhaust cooperates with the flame extinguishing shell to guide and discharge the exhaust gas of the internal combustion engine, and the flame extinguishing treatment of the exhaust gas emission is completed in combination with the flame extinguishing baffle. The flame extinguishing shell is immersed in the water channel, and the flame extinguishing shell heated by the high-temperature exhaust gas of the internal combustion engine is cooled. After water is stored in the flow channel between the flame extinguishing shell and the flame extinguishing exhaust, the cooling design of the flame extinguishing exhaust is completed.

[0015] Furthermore, the flame extinguishing shell is composed of a closed shell or an open shell, and the air inlet end of the flame extinguishing shell of the closed shell is connected to the air inlet end of the flame extinguishing exhaust.

[0016] The flame extinguishing shell of the closed shell structure can be immersed in the water channel, and has a better cooling effect than the combination of an open shell and flame extinguishing exhaust.

[0017] 3.Beneficial effects: Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention provides a forced-circulation cooling system for a water pump. In this system, the flame-extinguishing exhaust gas is connected to a circulating water inlet channel via a water inlet pipe for cooling. High-pressure water from the centrifugal water pump's impeller outlet is introduced into the flame-extinguishing exhaust gas's cooling chamber. The flame-extinguishing exhaust gas then draws cooling water from its own cooling chamber back into the circulating water return channel via a return pipe. This circulating water removes most of the heat from the flame-extinguishing exhaust gas chamber, cooling the flame-extinguishing exhaust gas and preventing operator burns caused by high exhaust temperatures during internal combustion engine water pump operation.

[0018] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the structure of the present invention; Figure 2 A half-section perspective view of the water pump casing structure of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at center A; Figure 4 A half-cut perspective view of the flame extinguishing exhaust structure of the present invention; Figure 5 An exploded view of the open flame extinguishing housing structure of the present invention; Figure 6 This is an exploded view of the closed flame extinguishing shell structure of the present invention.

[0020] Reference numerals: Water pump casing-1; circulating water return flow channel-11; circulating water diversion flow channel-12; Centrifugal impeller-2; Internal combustion engine - 3; Flame extinguishing exhaust-4; flow channel-41; Flame extinguisher shell-5; Flame damper-6; Water pipe-7; Return pipe-8. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be an element in the middle; when an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be an element in the middle; the terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items. Example

[0024] Reference Figures 1-6 A water pump forced circulation cooling system includes a water pump casing 1, a centrifugal impeller is provided inside the water pump casing 1, a circulating water diversion channel 12 is opened on the shell of the water pump casing 1, and the water inlet of the circulating water diversion channel 12 is arranged close to the outside of the water outlet side of the centrifugal impeller. A circulating water return channel 11 is opened in the water inlet area of ​​the water pump casing 1.

[0025] When the centrifugal impeller 2 is pumping water in the water pump casing 1, the circulating water inlet channel 12 and the circulating water return channel 11, which are added to the original water inlet and outlet water channel design of the water pump casing 1, can lead out the water in the water pump casing 1 to cool the relevant components of the water pump. By virtue of the pumping work of the centrifugal impeller 2, the components connected between the circulating water inlet channel 12 and the circulating water return channel 11 can be subjected to circulating water supply and cooling treatment. During the water supply process, the water flowing back into the water pump casing 1 is mixed with the water in the water inlet area of ​​the water pump casing 1 for cooling treatment. The circulating cooling system has the characteristics of high water circulation flow rate and large flow rate.

[0026] In this embodiment, Figure 1 and Figure 2 As shown, it also includes a flame-extinguishing exhaust 4, the water inlet of the flame-extinguishing exhaust 4 is connected to the water outlet of the water diversion pipe 7, the water inlet of the water diversion pipe 7 is connected to the water outlet of the circulating water diversion channel 12, the return water outlet of the flame-extinguishing exhaust 4 is connected to the water inlet of the return water pipe 8, and the water outlet of the return water pipe 8 is connected to the water inlet of the circulating water return channel 11.

[0027] The flame extinguishing exhaust 4 cooperates with the water inlet pipe 7 and the circulating water inlet channel 12 and the return pipe 8 and the circulating water return channel 11 to introduce water at the edge of the inner wall of the water pump housing into the flow channel 41 of the flame extinguishing exhaust 4. The circulating water flow can take away part of the heat on the flame extinguishing exhaust 4, effectively reducing the temperature at the flame extinguishing exhaust 4.

[0028] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, a water outlet pipe is fixedly provided on the water outlet side of the water pump casing 1 , and an internal combustion engine 3 can be connected to the pump seat of the water pump casing 1 , and a power output shaft of the internal combustion engine 3 is connected to a centrifugal impeller.

[0029] The outlet pipe cooperates with the water inlet area of ​​the water pump casing 1 to form a conventional water inlet and outlet passage design of the centrifugal water pump. A single-stage or multi-stage centrifugal impeller 2 can be set to cooperate with the water supply or different types of internal combustion engines 3 can be selected as the power source of the centrifugal water pump according to the user's usage requirements and customization needs.

[0030] When designing a multi-stage centrifugal impeller 2 with water supply, the circulating water return channel 11 and the circulating water inlet channel 12 can be set outside the multi-stage centrifugal impeller 2 or outside a certain stage of the centrifugal impeller 2, so that the water in the water pump casing 1 is introduced into the components of the water pump that need to be cooled for cooling.

[0031] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the air inlet of the flame-extinguishing exhaust 4 is connected to the exhaust port of the internal combustion engine 3, and a flame-extinguishing shell 5 is fixedly provided on the inner wall of the flame-extinguishing exhaust 4 close to the air inlet. A through hole is fixedly provided on the outer side of the flame-extinguishing shell 5, and the through hole is connected to the exhaust hole of the flame-extinguishing exhaust 4. A cooling water flow channel 41 is formed between the outer side of the flame-extinguishing shell 5 and the inner side of the flame-extinguishing exhaust 4, and the water inlet side of the cooling water flow channel 41 is connected to the water outlet of the water inlet pipe 7, and the water outlet of the cooling water flow channel 41 is connected to the water inlet of the return water pipe 8. The outer side of the flame-extinguishing shell 5 is immersed in the flow channel 41.

[0032] The flame extinguishing shell 5 and the flame extinguishing baffle 6 in the flame extinguishing exhaust 4 cooperate to guide and discharge the exhaust gas generated by the internal combustion engine 3. The flame extinguishing shell 5 is immersed in the flow channel 41 to prevent the high-temperature exhaust gas emitted by the internal combustion engine 3 in the flame extinguishing shell 5 from being heated, causing the water pump to scald the operators during transportation and transfer operations.

[0033] In this embodiment, Figure 4 and Figure 6As shown, the flame arrestor baffle 6 is fixed at the intake end of the flame arrestor housing 5.

[0034] The cooperation of the flame arrestor baffle 6 and the flame arrestor housing 5 completes the flame arrestor treatment of the high-temperature flue gas emitted by the internal combustion engine 3.

[0035] In this embodiment, as shown in Figure 4 and Figure 6 As shown, the flame arrestor housing 5 is composed of a closed housing or an open housing, and the intake end of the flame arrestor housing 5 of the closed housing is in communication with the intake end of the flame arrestor exhaust 4.

[0036] The flame arrestor housing 5 of the closed housing can obtain more contact area in the flow channel 41 than the flame arrestor housing 5 of the open housing, and obtain better cooling effect.

[0037] The above-described embodiments only express certain embodiments of the present application, which are described in detail and specifically, but should not be understood as a limitation on the scope of the patent of the present application; it should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of protection of the present application; therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

Claims

1. A water pump forced circulation cooling system, characterized by: The invention comprises a water pump casing (1), wherein a centrifugal impeller is provided inside the water pump casing (1), a circulating water inlet flow channel (12) is provided on the shell of the water pump casing (1), a water inlet of the circulating water inlet flow channel (12) is arranged close to the water outlet side of the centrifugal impeller, and a circulating water return flow channel (11) is provided in the water inlet area of ​​the water pump casing (1).

2. A water pump forced circulation cooling system according to claim 1, characterized in that: It also includes a flame extinguishing exhaust (4), the water inlet of the flame extinguishing exhaust (4) is connected to the water outlet of the water diversion pipe (7), the water inlet of the water diversion pipe (7) is communicated with the water outlet of the circulating water diversion channel (12), the return water outlet of the flame extinguishing exhaust (4) is connected to the water inlet of the return water pipe (8), and the water outlet of the return water pipe (8) is communicated with the water inlet of the circulating water return channel (11).

3. The water pump forced circulation cooling system according to claim 1, characterized in that: A water outlet pipe is fixedly provided on the water outlet side of the water pump casing (1), and an internal combustion engine (3) can be connected to the pump seat of the water pump casing (1), wherein a power output shaft of the internal combustion engine (3) is connected to a centrifugal impeller.

4. A water pump forced circulation cooling system according to claim 2, characterized in that: The air inlet of the flame extinguishing exhaust (4) is communicated with the exhaust port of the internal combustion engine (3); a flame extinguishing shell (5) is fixedly provided on the inner wall of the flame extinguishing exhaust (4) close to the air inlet; a through hole is fixedly provided on the outer side of the flame extinguishing shell (5), and the through hole is communicated with the exhaust hole of the flame extinguishing exhaust (4); a cooling water flow channel (41) is formed between the outer side of the flame extinguishing shell (5) and the inner side of the flame extinguishing exhaust (4); the water inlet side of the cooling water flow channel (41) is communicated with the water outlet of the water guide pipe (7); the water outlet of the cooling water flow channel (41) is communicated with the water inlet of the return water pipe (8); and the outer side of the flame extinguishing shell (5) is immersed in the flow channel (41).

5. The water pump forced circulation cooling system according to claim 2, characterized in that: A flame extinguishing baffle (6) is fixedly provided at the air inlet of the flame extinguishing exhaust (4), and the flame extinguishing baffle (6) is arranged in the flame extinguishing housing (5).

6. The water pump forced circulation cooling system according to claim 4, characterized in that: The flame extinguishing shell (5) is composed of a closed shell or an open shell, and the air inlet end of the flame extinguishing shell (5) of the closed shell is connected to the air inlet end of the flame extinguishing exhaust (4).

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