Self-balanced water-cooled double-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation

Abstract

The application discloses a self-balanced water-cooling double-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation, which comprises a high-speed gasoline engine and a valve body, wherein the valve body comprises a shell, a valve shaft, double-stage impellers and sealing devices; the shell is sealingly connected with the high-speed gasoline engine through a connecting base; the valve shaft is rotationally arranged in the shell; the double-stage impellers are arranged in the shell and fixedly arranged on the valve shaft; the valve shaft is connected with an output shaft of the high-speed gasoline engine extending into the shell; and the sealing devices are used for realizing the rotation sealing between the valve shaft and the shell; the valve body is provided with a water inlet and a water outlet; the water inlet is located on the shell and close to one end of the high-speed gasoline engine; and the water outlet is located on the shell and away from the other end of the high-speed gasoline engine. In actual use, the self-balanced water-cooling double-cylinder high-pressure centrifugal gasoline engine pump is convenient for long-distance water delivery and series use, can effectively reduce the pressure of the internal sealing structure of the pump, and prolong the service life of the sealing structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil pump equipment, in particular to a self-balancing water-cooled double-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation. BACKGROUND

[0002] The gasoline engine water pump is a centrifugal pump composed of a water pump and a support, which has the advantages of low cost, light weight, easy maintenance, low manufacturing cost and low noise. The common gasoline engine water pump is a centrifugal pump. The working principle of the centrifugal pump is that when the pump is filled with water, the engine drives the impeller to rotate, thereby generating centrifugal force, and the water in the impeller channel is thrown to the periphery under the action of the centrifugal force and flows into the pump shell, so that the pressure at the center of the impeller is reduced, which is lower than the pressure in the water inlet pipe. Water flows into the impeller under the action of the pressure difference from the water suction pool.

[0003] In the case of high mountain water delivery or long distance water delivery, the pump needs to be light in weight for easy transportation, and a gasoline engine is generally used as the power source. Multiple pumps are used in series to achieve the purpose of long distance water delivery. The current gasoline engine pump has the following disadvantages in actual use:

[0004] Firstly, when the pumps are connected in series, the sealing position of the pump bears a large water pressure, and the seal is easily damaged.

[0005] Secondly, the gasoline engine needs to be equipped with a dedicated cooling fan and a generator, which increases the burden of the gasoline engine and increases the energy loss. SUMMARY

[0006] The purpose of the present application is to provide a self-balancing water-cooled double-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation, which is convenient for long distance series water delivery in actual use, can effectively reduce the pressure of the internal sealing structure of the pump, and prolong the service life of the sealing structure.

[0007] To solve the above technical problems, the technical solution adopted by the present application is:

[0008] A self-balancing water-cooled double-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation, comprising a high-speed gasoline engine and a valve body, the valve body comprising a housing, a valve shaft, a double-stage impeller and a sealing device, the housing being sealingly connected to the high-speed gasoline engine through a connecting seat, the valve shaft being rotatably arranged in the housing, the double-stage impeller being located in the housing and fixedly arranged on the valve shaft, the valve shaft being connected to the output shaft of the high-speed gasoline engine extending into the housing, and the sealing device being used to realize the rotary sealing between the valve shaft and the housing.

[0009] The valve body is provided with a water inlet and a water outlet, the water inlet is located on the shell near the high-speed gasoline engine, and the water outlet is located on the shell away from the high-speed gasoline engine; the sealing position of the valve shaft and the output shaft of the high-speed gasoline engine is located on the side of the water inlet in the shell.

[0010] The shell is provided with a cooling water outlet and a cooling return water outlet, the cooling water outlet is connected with the inside of the shell, the cooling return water outlet is communicated with the water inlet, and a cooling pipe is arranged between the cooling water outlet and the cooling return water outlet.

[0011] The valve shaft is connected with the output shaft of the high-speed gasoline engine through threads.

[0012] Further optimization, the double-stage impeller comprises an impeller shaft, a first-stage impeller and a second-stage impeller, the first-stage impeller and the second-stage impeller are arranged on the impeller shaft, the impeller shaft is fixed on the valve shaft through screws, and the first-stage impeller and the second-stage impeller are symmetrically arranged.

[0013] The valve shaft is provided with a water guide part in an arc structure.

[0014] In the embodiment, the cooling water outlet is connected with a first-stage pump outlet formed at the first-stage impeller in the inside of the shell.

[0015] The intermediate partition plate is arranged between the first-stage impeller and the second-stage impeller, the front partition plate is arranged on the right side of the first-stage impeller, and the rear partition plate is arranged on the left side of the second-stage impeller.

[0016] Further limitation, the first-stage impeller and the second-stage impeller are both double-curved blades.

[0017] The sealing device is a mechanical sealing device.

[0018] Further optimization, the shell is made of high-strength aerospace aluminum alloy material and is made through vacuum pressure casting.

[0019] The cooling pipe is arranged at the cylinder of the high-speed gasoline engine through winding.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] The application provides power for driving the valve shaft by the high-speed gasoline engine, drives the double-stage impeller to rotate by the valve shaft, and realizes the purpose of increasing water pressure; in the application, the water inlet is arranged on the casing near one end of the high-speed gasoline engine, and the water outlet is arranged on the casing away from the high-speed gasoline engine; the sealing position of the valve shaft and the output shaft of the high-speed gasoline engine is located on the side of the water inlet in the casing; in this way, by changing the positions of the water inlet and the water outlet and arranging the sealing position on the side of the water inlet, when the pumps are used in series, the sealing device bears smaller water pressure, and only bears the input pressure of the previous pump, and does not bear the water pressure of the previous pump and the high pressure generated by the pump itself; if the sealing device is arranged at the water outlet, the sealing device needs to bear the output pressure of the previous pump and the high pressure generated by the pump itself; the application realizes the protection of the sealing device, reduces the pressure on the sealing device, and prolongs the service life of the sealing device;

[0022] Meanwhile, the application guides the pressurized water to the inside of the high-speed gasoline engine through the cooling pipe, realizes heat dissipation and cooling of the high-speed gasoline engine by the continuously circulating water, improves the heat dissipation efficiency of the high-speed gasoline engine, and does not need to dissipate heat by mounting a generator and a heat dissipation fan, reduces the energy loss, and reduces the burden of the high-speed gasoline engine. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0024] Figure 1 It is one of the overall structure schematic diagram of the application.

[0025] Figure 2 It is the second overall structure schematic diagram of the application.

[0026] Legend:

[0027] 101-high-speed gasoline engine, 102-valve body, 103-casing, 104-valve shaft, 105-double-stage impeller, 106-sealing device, 107-water inlet, 108-water outlet, 109-cooling water outlet, 110-cooling water return, 111-cooling pipe, 112-impeller shaft, 113-first-stage impeller, 114-second-stage impeller, 115-intermediate partition plate, 116-front partition plate, 117-rear partition plate, 118-water guide part, 119-water guide cylinder. DETAILED DESCRIPTION

[0028] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different manners without departing from the spirit or scope of the embodiments of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0029] In the description of the embodiments of the present application, it needs to be understood that the terms "length", "vertical", "horizontal", "top", "bottom", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0030] In addition, the terms "first", "second", "third", etc. are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0031] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0032] In the embodiments of the present application, unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present embodiments. For the purpose of simplification, the elements and arrangements of the specific examples are described in the following disclosure. Of course, they are only examples and are not intended to limit the present embodiments. In addition, the present embodiments can repeatedly refer to reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which does not indicate the relationship between the various embodiments and / or arrangements discussed.

[0034] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0035] Embodiment One

[0036] Referring to Figure 1 and Figure 2 The present embodiment discloses a self-balanced water-cooled double-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation, comprising a high-speed gasoline engine 101 and a valve body 102, the valve body 102 comprising a shell 103, a valve shaft 104, a double-stage impeller 105 and a sealing device 106, the shell 103 being sealingly connected with the high-speed gasoline engine 101 through a connecting seat, the valve shaft 104 being rotatably arranged in the shell 103, the double-stage impeller 105 being arranged in the shell 103 and fixedly arranged on the valve shaft 104, the valve shaft 104 being connected with an output shaft of the high-speed gasoline engine 101 extending into the shell 103, and the sealing device 106 being used to realize the rotational sealing between the valve shaft 104 and the shell 103.

[0037] Among them, the valve body 102 is provided with a water inlet 107 and a water outlet 108, the water inlet 107 is located on one end of the shell 103 close to the high-speed gasoline engine 101, and the water outlet 108 is located on the other end of the shell 103 away from the high-speed gasoline engine 101; the sealing position of the valve shaft 104 and the output shaft of the high-speed gasoline engine 101 is located on the side of the water inlet 107 in the shell 103.

[0038] The shell 103 is provided with a cooling water outlet 109 and a cooling water return outlet 110, the cooling water outlet 109 is connected with the inside of the shell 103, the cooling water return outlet 110 is communicated with the water inlet 107, and a cooling pipe 111 is arranged between the cooling water outlet 109 and the cooling water return outlet 110, the cooling pipe 111 is arranged in the inside of the high-speed gasoline engine 101.

[0039] The application provides power for driving the valve shaft 104 by the high-speed gasoline engine 101, drives the double-stage impeller 105 to rotate through the valve shaft 104, and realizes the purpose of increasing water pressure; in the application, the water inlet 107 is arranged on the casing 103 close to one end of the high-speed gasoline engine 101, and the water outlet 108 is arranged on the casing 103 away from one end of the high-speed gasoline engine 101; the sealing position of the valve shaft 104 and the output shaft of the high-speed gasoline engine 101 is located on the side of the water inlet 107 in the casing 103; by changing the positions of the water inlet 107 and the water outlet 108 and arranging the sealing position on the side of the water inlet 107, when the pumps are used in series, the water pressure borne by the sealing device 106 is smaller, which is only the input pressure of the previous pump and will not bear the water pressure of the previous pump and the high pressure generated by the pump itself; if the sealing device 106 is arranged at the water outlet 108, the sealing device 106 needs to bear the output pressure of the previous pump and the high pressure generated by the pump itself; the application realizes the protection of the sealing device 106, reduces the pressure borne by the sealing device 106, and prolongs the service life of the sealing device 106.

[0040] Meanwhile, the application guides the pressurized water to the inside of the high-speed gasoline engine 101 through the cooling pipe 111, realizes heat dissipation and cooling of the high-speed gasoline engine 101 through the continuously circulating water, improves the heat dissipation efficiency of the high-speed gasoline engine 101, does not need to dissipate heat through the way of mounting a generator and a heat dissipation fan, reduces the loss of energy and the burden of the high-speed gasoline engine 101, and simplifies the structure of the high-speed gasoline engine 101.

[0041] The valve shaft 104 is connected with the output shaft of the high-speed gasoline engine 101 through threads; in this way, the valve shaft 104 is more convenient to disassemble and assemble in actual use, and the assembly efficiency is improved.

[0042] Figure 2 The arrow is the water flow direction.

[0043] It should be noted that the sealing device 106 is a mechanical sealing device, which is a conventional sealing structure of the pump, and the specific structure and assembly relationship will not be described here.

[0044] The double-stage impeller 105 includes an impeller shaft 112, a first-stage impeller 113 and a second-stage impeller 114, the first-stage impeller 113 and the second-stage impeller 114 are arranged on the impeller shaft 112, the impeller shaft 112 is fixed on the valve shaft 104 through screws, and the first-stage impeller 113 and the second-stage impeller 114 are symmetrically arranged; in this way, the pressure difference between the first-stage impeller 113 and the second-stage impeller 114 can be effectively balanced.

[0045] Further limited, in actual use, the cooling outlet 109 is connected with the first stage pump outlet formed at the first stage impeller 113 inside the shell 103.

[0046] Wherein, the intermediate partition plate 115 is arranged between the first stage impeller 113 and the second stage impeller 114, the front partition plate 116 is arranged at the right side of the first stage impeller 113, and the rear partition plate 117 is arranged at the left side of the second stage impeller 114; so as to make the first stage impeller 113 and the second stage impeller 114 operate more stably.

[0047] Wherein, the first stage impeller 113 and the second stage impeller 114 are both double-curved blades.

[0048] In the embodiment, the shell 103 is made of high-strength aerospace aluminum alloy material by vacuum pressure casting.

[0049] Further optimization, the cooling pipe 111 is arranged at the cylinder of the high-speed gasoline engine 101 by winding; so as to make the cooling pipe 111 closely adhere to the outer wall of the cylinder of the high-speed gasoline engine 101, and improve the heat dissipation efficiency.

[0050] Embodiment two

[0051] The embodiment is further optimized on the basis of the embodiment one, in the embodiment, the valve shaft 104 is provided with a water guide part 118 in arc structure. The water guide part 118 can make the water flow more smoothly when passing through the valve shaft 104, reduce the water resistance, reduce the vibration amplitude when the impeller rotates, and make the whole device run more smoothly.

[0052] Further optimization, in actual use, the water guide cylinder 119 is arranged on the shell 103 at the position close to the sealing device 106 in the water inlet, the water guide cylinder 119 is in circular truncated cone structure, the large end of the water guide cylinder 119 is connected with the shell 103, and the small end is rotationally and sealingly connected with the valve shaft 104.

[0053] In this way, under the action of the water guide cylinder 119, the water sucked into the shell 103 under the action of the double-stage impeller 105 can be avoided from directly impacting the mechanical sealing device, and the water is guided by the water guide cylinder 119 to directly enter the water guide part 118, so as to avoid the water flow impacting the mechanical sealing device, improve the sealing performance, and rotationally and sealingly connect the small end with the valve shaft, so as to isolate the water pressure from directly acting on the mechanical sealing device to a certain extent, improve the overall sealing performance of the device and prolong the service life.

[0054] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including all changes and modifications falling within the scope of the present application.

[0055] The above descriptions are only the preferred embodiment of the application, not intended to limit the application. It is pointed out that any modification, equivalent replacement and improvement, etc. within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A self-balancing water-cooled twin-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation, comprising a high-speed gasoline engine and a valve body, characterized in that: The valve body includes a housing, a valve shaft, a two-stage impeller, and a sealing device. The housing is sealed to a high-speed gasoline engine via a connecting seat. The valve shaft is rotatably disposed within the housing. The two-stage impeller is located within the housing and fixedly disposed on the valve shaft. The valve shaft is connected to the output shaft of the high-speed gasoline engine extending into the housing. The sealing device is used to achieve rotational sealing between the valve shaft and the housing. The valve body is provided with an inlet and an outlet. The inlet is located on the housing near the high-speed gasoline engine, and the outlet is located on the housing away from the high-speed gasoline engine. The sealing position between the valve shaft and the output shaft of the high-speed gasoline engine is located inside the housing on the side of the inlet. The housing is provided with a cooling water outlet and a cooling water return outlet. The cooling water outlet is connected to the inside of the housing, and the cooling water return outlet is connected to the water inlet. A cooling pipe is provided between the cooling water outlet and the cooling water return outlet, and the cooling pipe is placed inside the high-speed gasoline engine.

2. The self-balancing water-cooled twin-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation according to claim 1, characterized in that: The valve shaft is connected to the output shaft of the high-speed gasoline engine via a thread.

3. A self-balancing water-cooled twin-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation according to claim 1, characterized in that: The two-stage impeller includes an impeller shaft, a first-stage impeller, and a second-stage impeller. The first-stage and second-stage impellers are mounted on the impeller shaft, which is fixed to the valve shaft by screws. The first-stage and second-stage impellers are arranged symmetrically.

4. A self-balancing water-cooled twin-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation according to claim 1, characterized in that: The valve shaft has a water guide section with an arc-shaped structure.

5. A self-balancing water-cooled twin-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation according to claim 3, characterized in that: The cooling water outlet is connected to the primary pump outlet formed at the primary impeller inside the casing.

6. A self-balancing water-cooled twin-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation according to claim 3, characterized in that: An intermediate partition is provided between the first-stage impeller and the second-stage impeller. A front partition is provided on the right side of the first-stage impeller, and a rear partition is provided on the left side of the second-stage impeller.

7. A self-balancing water-cooled twin-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation according to claim 3, characterized in that: Both the first-stage and second-stage impellers have hyperbolic blades.

8. A self-balancing water-cooled twin-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation according to claim 3, characterized in that: The sealing device is a mechanical seal.

9. A self-balancing water-cooled twin-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation according to claim 3, characterized in that: The shell is made of high-strength aerospace aluminum alloy and manufactured by vacuum pressure casting.

10. A self-balancing water-cooled twin-cylinder high-pressure centrifugal gasoline engine pump suitable for series operation according to any one of claims 1-9, characterized in that: The cooling pipe is installed at the cylinder of the high-speed gasoline engine by winding.

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