Compact water-cooling high-pressure plunger pump

Abstract

The utility model relates to the technical field of fluid machinery, in particular to a compact water-cooling high-pressure plunger pump which comprises a water inlet end and a water outlet end and further comprises a pump body and a motor connected with the pump body and used for driving the pump body to work, and the pump body is provided with a first water inlet and a first water outlet. The motor comprises a machine shell, the machine shell is provided with a water cooling flow channel, and the water cooling flow channel comprises a second water inlet and a second water outlet; wherein the first water inlet is communicated with the second water outlet, so that the second water inlet is used as a water inlet end of the plunger pump, and the first water outlet is used as a water outlet end of the plunger pump; or the first water outlet is communicated with the second water inlet, so that the first water inlet serves as the water inlet end of the plunger pump, and the second water outlet serves as the water outlet end of the plunger pump; according to the scheme, a pump does not need to be additionally arranged to drive water to flow in the water cooling flow channel, only one pump is adopted, water conveying work is achieved, and water flow can be driven to conduct water cooling heat dissipation on the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid machinery, in particular to a compact water-cooled high-pressure plunger pump. Background Art

[0002] A plunger pump is a machine for conveying liquid or pressurizing liquid. It is mainly composed of a motor and a pump body. The motor drives the pump shaft of the pump body to rotate, thereby making the pump body work to convey or pressurize the liquid. In order to dissipate the heat of the motor, a water cooling mechanism is provided on the motor casing in the related technology. For example, a water cooling channel is opened on the motor casing, or a water cooling pipe is directly provided on the motor casing. When working, a pump for conveying cooling water circulates the cooling water into the water cooling channel or the water cooling pipe, so that the cooling water absorbs the heat generated by the motor casing, thereby achieving the purpose of heat dissipation of the motor. This water-cooled plunger pump can refer to the structure provided by the announcement number CN221033160U, which mainly uses an electrically controlled guide pump to drive the cooling water to circulate in the water cooling pipe to achieve the heat dissipation of the motor of the plunger pump.

[0003] However, although this water-cooled pump can achieve a good cooling effect, it still has some shortcomings in actual use. For example, it requires an additional pump to drive the cooling water to flow, so it needs to be improved. Utility Model Content

[0004] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the utility model is to provide a compact water-cooled high-pressure plunger pump.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A compact water-cooled high-pressure plunger pump comprises a water inlet and a water outlet, a pump body and a motor connected to the pump body for driving the pump body to work, the pump body having a first water inlet and a first water outlet; the motor comprises a casing, the casing is provided with a water-cooling channel, the water-cooling channel comprises a second water inlet and a second water outlet; wherein,

[0007] The first water inlet is connected to the second water outlet, so that the second water inlet serves as the water inlet end of the plunger pump and the first water outlet serves as the water outlet end of the plunger pump; or,

[0008] The first water outlet is communicated with the second water inlet, so that the first water inlet serves as the water inlet end of the plunger pump and the second water outlet serves as the water outlet end of the plunger pump.

[0009] Compared with the prior art, the advantages of adopting this solution are:

[0010] The utility model connects the first water inlet with the second water outlet, or the first water outlet with the second water inlet; when the plunger pump is working, the pumped water enters from the water inlet end of the plunger pump and is output from the water outlet end of the plunger pump. During this process, the pumped water passes through the water cooling channel, thereby absorbing the heat of the motor casing to achieve heat dissipation of the motor; it can be seen that in this solution, there is no need to set up an additional pump to drive the water to flow in the water cooling channel, and it can rely on the plunger pump itself to drive the water to flow through the water cooling channel to dissipate the heat of the casing, so that the structure is more compact.

[0011] This is equivalent to using only one pump to both deliver water and drive the water flow to cool the motor.

[0012] As an optional implementation manner of the present utility model, a filter device is provided on the second water inlet, and the filter device includes a filter net.

[0013] As an optional implementation manner of the present utility model, the filtering surface of the filter screen is a spherical surface.

[0014] As an optional implementation manner of the present invention, the first water inlet is connected to the second water outlet via a connecting pipe, or the first water outlet is connected to the second water inlet via a connecting pipe.

[0015] As an optional embodiment of the utility model, the casing includes an outer shell and an inner shell which are axially inserted into each other; an interlayer cavity surrounding the casing is formed between the outer shell and the inner shell, and the water-cooling channel is formed in the interlayer cavity; the second water inlet and the second water outlet are both connected to the interlayer cavity.

[0016] As an optional embodiment of the utility model, a plurality of convex ribs are provided in the interlayer cavity and are distributed in sequence along the circumference of the interlayer cavity, and the convex ribs all extend along the axial direction of the interlayer cavity; the water-cooling channel is formed by spacing between two adjacent convex ribs; wherein a notch is formed at one end of the convex rib, and a through hole connecting the two adjacent water-cooling channels is opened at the other end.

[0017] As an optional implementation manner of the present utility model, a first sealing ring is embedded between the outer circumferential wall of the inner shell and the inner circumferential wall of the outer shell.

[0018] As an optional embodiment of the utility model, the motor also includes two end covers respectively covering the two ends of the casing; a second sealing ring is embedded between the inner end surface of the end cover and the end surface of the inner casing, and / or a third sealing ring is embedded between the inner end surface of the end cover and the end surface of the outer casing.

[0019] As an optional implementation manner of the utility model, it further includes a controller arranged on the casing, and the controller is used to convert direct current into alternating current.

[0020] Other advantages and effects of the present invention are explained in detail in the specific implementation manner and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is an exploded view of the utility model;

[0023] Figure 3 It is a cross-sectional view of the utility model;

[0024] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0025] Figure 5 It is a partial structural schematic diagram of the second water inlet position of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the inner shell of the utility model. DETAILED DESCRIPTION

[0027] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0028] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0029] Example 1

[0030] See also Figure 1-6 As shown, this embodiment provides a compact water-cooled high-pressure plunger pump, including a water inlet end and a water outlet end. When working, the water inlet end of the plunger pump is connected to the water source to be pumped. Under the pumping of the plunger pump, water enters from the water inlet end of the plunger pump and is finally output from the water outlet end of the plunger pump.

[0031] Among them, the plunger pump provided in this embodiment is preferably a high-power plunger pump with a power between 7.5kw-11kw.

[0032] In this embodiment, Figure 1As shown, the plunger pump includes a pump body 2 and a motor 1 connected to the pump body 2 for driving the pump body 2 to work. Specifically, the main shaft of the motor 1 is connected to the pump shaft of the pump body 2 to drive the pump body 2 to work for pumping water or increasing pressure.

[0033] The pump body 2 has a first water inlet 22 and a first water outlet 21 . When the pump body 2 is working, water enters the pump cavity of the pump body 2 through the first water inlet 22 , and then is output from the pump cavity of the pump body 2 through the first water outlet 21 .

[0034] like Figure 2 , Figure 3 As shown, the motor 1 includes a casing 11 and two end covers 12 respectively covering the two ends of the casing 11. A water cooling channel 115 is provided on the casing 11. The water cooling channel 115 includes a second water inlet 114 and a second water outlet 113. Water enters the water cooling channel 115 from the second water inlet 114 and flows out of the water cooling channel 115 from the second water outlet 113.

[0035] Among them, Figure 1 As shown, the first water inlet 22 is connected to the second water outlet 113 through the connecting pipe 3. At this time, it is equivalent to that the second water inlet 114 serves as the water inlet end of the plunger pump, and the first water outlet 21 serves as the water outlet end of the plunger pump.

[0036] When working, the second water inlet 114 is connected to the water source to be extracted, and the motor 1 drives the pump body 2 to work, so that the extracted water starts from the water source and flows through the second water inlet 114-water cooling channel 115-second water outlet 113-connecting pipe 3-first water inlet 22-first water outlet 21 in sequence. In this process, when water flows through the water cooling channel 115, it can absorb the heat of the housing 11 to achieve heat dissipation for the motor 1; during the whole process, there is no need to set up an additional pump to drive the water to flow in the water cooling channel 115, and it can rely on the plunger pump itself to drive the water to flow through the water cooling channel 115 to dissipate heat for the housing 11, which is equivalent to using only one pump to achieve water delivery and drive water flow to water-cool the motor 1.

[0037] In order to prevent the plunger pump from bringing too much impurities into the water cooling channel 115 when delivering water, causing the water cooling channel 115 to be blocked, in this embodiment, Figure 5 As shown, a filter device 15 is disposed on the second water inlet 114 , and the filter device 15 includes a filter net 151 ; specifically, the filter net 151 can be inserted into the second water inlet 114 to intercept and filter impurities mixed in the water.

[0038] In order to increase the filtering area of ​​the filter 151, in this embodiment, the filtering surface of the filter 151 is a spherical surface. Preferably, in this embodiment, the filter 151 is in the shape of a hemispherical shell. Compared with the plane filter 151, the spherical filter 151 has a larger filtering area.

[0039] In this embodiment, the specific structure of the water cooling channel 115 is as follows:

[0040] The housing 11 includes an outer housing 111 and an inner housing 112 which are inserted into each other along the axial direction, wherein the outer housing 111 is sleeved outside the inner housing 112, and the two are coaxially arranged.

[0041] like Figure 6 As shown, an interlayer cavity 14 surrounding the casing 11 is formed between the outer shell 111 and the inner shell 112. For example, the middle area of ​​the outer peripheral wall of the inner shell 112 is recessed inward to form a recessed area surrounding the inner shell 112. When the outer shell 111 and the inner shell 112 are inserted into each other, the outer shell 111 encloses the recessed area so that the recessed area constitutes the interlayer cavity 14.

[0042] The second water inlet 114 and the second water outlet 113 are both communicated with the interlayer cavity 14 . Specifically, the second water inlet 114 and the second water outlet 113 are both disposed on the outer shell 111 and are respectively located near two ends of the outer shell 111 .

[0043] The water cooling channel 115 is formed in the interlayer cavity 14, specifically: Figure 6 As shown, the interlayer cavity 14 is provided with a plurality of convex ribs 13 distributed in sequence along the circumference of the interlayer cavity 14, and the convex ribs 13 all extend along the axial direction of the interlayer cavity 14; the water-cooling channel 115 is formed by spacing between two adjacent convex ribs 13, wherein the convex ribs 13 are preferably fixed to the outer peripheral wall of the inner shell 112.

[0044] The convex rib 13 has a notch 131 formed at one end, and the notch 131 serves as the water outlet of each water-cooling channel 115. The other end is provided with a through hole 132 connecting two adjacent water-cooling channels 115, and the through hole 132 serves as the water inlet of each water-cooling channel 115. The notches 131 are on the same side, and the through holes 132 are on the same side. The second water inlet 114 is on the side where the through hole 132 is located; the second water outlet 113 is on the side where the notch 131 is located; for example, in this embodiment, Figure 3 As shown, the second water inlet 114 is disposed at the upper right portion of the housing 111 , and the second water outlet 113 is disposed at the lower left portion of the housing 111 .

[0045] In this way, water enters the interlayer cavity 14 from the second water inlet 114, then flows into the water-cooling channels 115 through the through holes 132, then flows along the water-cooling channels 115 to the side where the incision 131 is located, and finally flows out from the second water outlet 113; the water can absorb the heat of the casing 11 during the flow in the water-cooling channel 115 to achieve water-cooling heat dissipation for the motor 1.

[0046] In order to improve the sealing performance of the joint between the inner shell 112 and the outer shell 111, in this embodiment, Figure 2 and Figure 4 As shown, a first sealing ring M1 is embedded between the outer circumferential wall of the inner shell 112 and the inner circumferential wall of the outer shell 111. The first sealing ring M1 is radially compressed between the inner shell 112 and the outer shell 111 to form a seal. It is worth noting that two first sealing rings M1 are provided, respectively located on both sides of the interlayer cavity 14.

[0047] A second sealing ring M2 is embedded between the inner end surface of the end cover 12 and the end surface of the inner shell 112, and a third sealing ring M3 is embedded between the inner end surface of the end cover 12 and the end surface of the outer shell 111. The second sealing ring M2 is axially pressed between the inner shell 112 and the end cover 12, and the third sealing ring M3 is axially pressed between the outer shell 111 and the end cover 12. It is worth noting that Figure 2 As shown, a second sealing ring M2 and a third sealing ring M3 are provided between the two end covers 12 and the two ends of the housing 11 .

[0048] The significance of setting the second sealing ring M2 is that when the first sealing ring M1 is damaged, resulting in a loose seal at the joint between the inner shell 112 and the outer shell 111, the water in the water-cooling channel 115 will leak from the joint, and then penetrate into the interior of the motor 1 along the joint between the end face of the inner shell 112 and the inner end face of the end cover 12, thereby damaging the motor 1; and by setting the second sealing ring M2, a seal can be formed at the joint between the inner shell 112 and the end cover 12, so that even if the first sealing ring M1 is damaged and causes water leakage, the existence of the second sealing ring M2 can prevent the leaked water from continuing to flow into the motor 1 from the joint between the inner shell 112 and the end cover 12, which is equivalent to forming a secondary seal, which is beneficial to improving the sealing reliability.

[0049] Similarly, the third sealing ring M3 can form a seal at the joint between the outer shell 111 and the end cover 12. Even if the first sealing ring M1 is damaged and leaks, the third sealing ring M3 can prevent the leaked water from continuing to flow out from the joint between the outer shell 111 and the end cover 12.

[0050] In order to facilitate the installation and positioning of each sealing ring, in this embodiment, Figure 4As shown, a first embedding groove M11 coaxially arranged with the inner shell 112 for embedding the first sealing ring M1 is provided on the outer peripheral wall of the inner shell 112; a second embedding groove M21 coaxially arranged with the second sealing ring M2 and a third embedding groove M31 coaxially arranged with each other for embedding the third sealing ring M3 are respectively provided on the inner end surface of the end cover 12.

[0051] The plunger pump provided in this embodiment also includes a controller 5 arranged on the casing 1. Specifically, the controller 5 is fixed on the outer casing 111. The function of the controller is to convert the input direct current into alternating current for use by the power supply machine 1.

[0052] Example 2

[0053] The difference between this embodiment and embodiment 1 is that the water inlet and outlet of the plunger pump are different. Specifically:

[0054] In Example 1, the first water inlet 22 is connected to the second water outlet 113 through the connecting pipe 3, so that the second water inlet 114 serves as the water inlet end of the plunger pump and the first water outlet 21 serves as the water outlet end of the plunger pump. The water flow direction is, in sequence, second water inlet 114 - water cooling channel 115 - second water outlet 113 - connecting pipe 3 - first water inlet 22 - first water outlet 21.

[0055] This embodiment is different in that the first water outlet 21 is connected to the second water inlet 114 through a connecting pipe 3 (not shown in the figure). At this time, it is equivalent to the first water inlet 22 serving as the water inlet end of the plunger pump and the second water outlet 113 serving as the water outlet end of the plunger pump.

[0056] When working, the first water inlet 22 is connected to the water source to be pumped, and the motor 1 drives the pump body 2 to work, so that the pumped water starts from the water source and flows through the first water inlet 22-the first water outlet 21-the connecting pipe 3-the second water inlet 114-the water cooling channel 115-the second water outlet 113 in sequence. When the water flows through the water cooling channel 115, it can absorb the heat of the housing 11 to achieve the heat dissipation of the motor 1. In this way, only one pump can be used to achieve the purpose of both water delivery and driving water flow to cool the motor 1.

[0057] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A compact water-cooled high-pressure plunger pump, comprising a water inlet end and a water outlet end, characterized in that: It also includes a pump body and a motor connected to the pump body for driving the pump body to work, the pump body has a first water inlet and a first water outlet; the motor includes a casing, the casing is provided with a water cooling channel, the water cooling channel includes a second water inlet and a second water outlet; wherein, The first water inlet is connected to the second water outlet, so that the second water inlet serves as the water inlet end of the plunger pump and the first water outlet serves as the water outlet end of the plunger pump; or, The first water outlet is connected to the second water inlet, so that the first water inlet serves as the water inlet end of the plunger pump and the second water outlet serves as the water outlet end of the plunger pump; The casing comprises an outer casing and an inner casing which are mutually sleeved in the axial direction; a sandwich cavity surrounding the casing is formed between the outer casing and the inner casing, and the water cooling channel is formed in the sandwich cavity; the second water inlet and the second water outlet are both connected to the sandwich cavity; The interlayer cavity is provided with a plurality of convex ribs which are distributed in sequence along the circumference of the interlayer cavity, and the convex ribs all extend along the axial direction of the interlayer cavity; the water-cooling channel is formed by spacing between two adjacent convex ribs; wherein a notch is formed at one end of the convex rib, and a through hole connecting the two adjacent water-cooling channels is opened at the other end.

2. A compact water-cooled high-pressure plunger pump according to claim 1, characterized in that: The second water inlet is provided with a filter device, and the filter device comprises a filter net.

3. A compact water-cooled high-pressure plunger pump according to claim 2, characterized in that: The filtering surface of the filter screen is a spherical surface.

4. A compact water-cooled high-pressure plunger pump according to claim 1, characterized in that: The first water inlet is connected to the second water outlet through a connecting pipe, or the first water outlet is connected to the second water inlet through a connecting pipe.

5. A compact water-cooled high-pressure plunger pump according to claim 1, characterized in that: A first sealing ring is embedded between the outer peripheral wall of the inner shell and the inner peripheral wall of the outer shell.

6. A compact water-cooled high-pressure plunger pump according to claim 5, characterized in that: The motor also includes two end covers respectively covering the two ends of the casing; a second sealing ring is embedded between the inner end surface of the end cover and the end surface of the inner casing, and / or a third sealing ring is embedded between the inner end surface of the end cover and the end surface of the outer casing.

7. A compact water-cooled high-pressure plunger pump according to claim 1, characterized in that: The utility model also comprises a controller arranged on the casing, and the controller is used for converting direct current into alternating current.

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