CN114750089A - Pump device of water ring vacuum pump - Google Patents
Pump device of water ring vacuum pump Download PDFInfo
- Publication number
- CN114750089A CN114750089A CN202210377041.7A CN202210377041A CN114750089A CN 114750089 A CN114750089 A CN 114750089A CN 202210377041 A CN202210377041 A CN 202210377041A CN 114750089 A CN114750089 A CN 114750089A
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- Prior art keywords
- wrench
- water ring
- hoop
- ring vacuum
- vacuum pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The embodiment of the invention provides a water ring vacuum pump disc pump device which comprises a disc pump piece and a wrench assembly, wherein the disc pump piece comprises a first anchor ear and a second anchor ear, and the first anchor ear is connected with the second anchor ear to form a disc pump hole suitable for being fixed on a rotating shaft of a water ring vacuum pump. The wrench assembly is arranged on the peripheral surface of the disc pump. The water ring vacuum pump disc pump device provided by the embodiment of the invention can effectively carry out disc pump operation on the rotating shaft of the water ring vacuum pump, greatly facilitates the daily maintenance of the water ring vacuum pump by workers, can achieve the effect of preventing the rust formation of the inner surface of the pump shell and the impeller of the water ring vacuum pump by carrying out disc pump operation on the water ring vacuum pump, and further greatly improves the safety of the water ring vacuum pump.
Description
Technical Field
The invention belongs to the technical field of water ring vacuum pumps, and particularly relates to a disc pump device of a water ring vacuum pump.
Background
The water ring vacuum pump is one of the most important devices in a coal mine gas extraction system, and the working performance of the water ring vacuum pump directly influences the gas extraction effect and safe and efficient production of a mine. After the water ring vacuum pump operates for a period of time, because of the corrosion of circulating water quality, the inner surface of a pump shell of the water ring vacuum pump and an impeller can be easily rusted, so that the clearance of the impeller is reduced, and further the internal resistance of the pump body is increased, so that the danger of twisting off the pump shaft and burning out a motor exists.
Therefore, the disc pump operation of the water ring vacuum pump is required frequently to prevent the problem of rust formation frequently occurring on the inner surface of the pump casing and the impeller of the water ring vacuum pump.
However, as the diameter of the pump shaft is larger and the shape is circular with no stress point as the water ring vacuum pump is gradually increased, the pumping device of the water ring vacuum pump in the related art is difficult to effectively perform pumping operation on the water ring vacuum pump with the larger diameter, and great inconvenience is caused to the daily maintenance of the water ring vacuum pump.
Disclosure of Invention
Therefore, the embodiment of the invention provides a water ring vacuum pump disc pump device, which can effectively perform disc pump operation on a water ring vacuum pump with a larger diameter, greatly facilitates the daily maintenance of the water ring vacuum pump by workers, can achieve the effect of preventing the inner surface of a pump shell and an impeller of the water ring vacuum pump from rusting by performing the disc pump operation on the water ring vacuum pump, and further greatly improves the safety of the water ring vacuum pump.
The disc pump device of the water ring vacuum pump comprises a disc pump piece and a wrench assembly. The disc pump piece comprises a first anchor ear and a second anchor ear, and the first anchor ear is connected with the second anchor ear to form a disc pump hole suitable for being fixed on a rotating shaft of the water ring vacuum pump; the wrench assembly is arranged on the outer peripheral surface of the disc pump piece.
When the disc pump device of the water ring vacuum pump disclosed by the embodiment of the invention is used for disc pump of a water ring vacuum pump with a larger diameter, the disc pump piece is sleeved on the rotating shaft of the water ring vacuum pump and fixed, and the rotating shaft of the water ring vacuum pump can be rotated by pulling the wrench assembly arranged on the outer peripheral surface of the disc pump piece. Simultaneously, the wrench assembly, the disc pump piece and the rotating shaft of the water ring vacuum pump form a labor-saving lever structure, so that the working strength of workers in the process of rotating the rotating shaft of the water ring vacuum pump is greatly reduced. Through carrying out the dish pump operation to the water ring vacuum pump, can reach the effect that prevents water ring vacuum pump's pump case internal surface and impeller from scaling rust, and then very big improvement water ring vacuum pump's security.
In some embodiments, the wrench assembly includes a first wrench member and a second wrench member spaced apart from each other, the first wrench member is connected to the first hoop, and the second wrench member is connected to the second hoop.
In some embodiments, the first wrench member comprises a first wrench rod and a second wrench rod, one end of the first wrench rod is connected to the first anchor ear, the other end of the first wrench rod extends in a direction away from the first anchor ear, and the other end of the first wrench rod is provided with a first handrail ball;
One end of the second lever is connected with the first hoop, the other end of the second lever extends in the direction away from the first hoop, and a second handrail ball is arranged at the other end of the second lever.
In some embodiments, the first wrench member further comprises a first support member, one end of the first support member is connected to the first wrench bar, and the other end of the first support member is connected to the second wrench bar.
In some embodiments, a projection of the first support is an arc-shaped surface protruding towards the first hoop in a projection plane orthogonal to the axis of the disc pump hole, and the first support is connected with the first hoop.
In some embodiments, the second wrench comprises a third wrench rod and a fourth wrench rod, one end of the third wrench rod is connected to the second anchor ear, the other end of the third wrench rod extends in a radial direction away from the second anchor ear, and the other end of the third wrench rod is provided with a third handrail ball;
one end of the fourth lever is connected with the second hoop, the other end of the fourth lever extends in the radial direction far away from the second hoop, and a fourth handrail ball is arranged at the other end of the fourth lever.
In some embodiments, the second wrench member further includes a second supporting member, one end of the second supporting member is connected to the third wrench bar, and the other end of the first supporting member is connected to the fourth wrench bar.
In some embodiments, a projection of the second support is an arc-shaped surface protruding towards the second hoop in a projection plane orthogonal to the axis of the disc pump hole, and the second support is connected with the second hoop.
In some embodiments, a groove is arranged on the inner side of any one of the first anchor ear and the second anchor ear, and the groove is matched with a protrusion on the rotating shaft of the water ring vacuum pump so as to prevent the disc pump piece from sliding relative to the rotating shaft of the water ring vacuum pump.
In some embodiments, the water ring vacuum pump disc pump apparatus further comprises a fastening assembly comprising a first fastener and a second fastener;
one end of the first hoop is connected with one end of the second hoop through the first fastener, and the other end of the first hoop is connected with the other end of the second hoop through the second fastener.
Drawings
FIG. 1 is a schematic structural diagram of a disc pump device of a water ring vacuum pump according to an embodiment of the invention;
FIG. 2 is a partially exploded view of a water ring vacuum pump disc pump assembly according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 1;
fig. 4 is a partially enlarged view of a portion B in fig. 1.
Reference numerals are as follows:
100. a water ring vacuum pump disc pump device; 1. a disc pump member; 101. a first hoop; 102. a second hoop; 103. a disc pump hole; 2. a wrench assembly; 201. a first wrench member; 2011. a first lever; 2012. a first armrest ball; 2013. a second lever; 2014. a second armrest ball; 2015. a first support member; 202. a second wrench member; 2021. a third lever; 2022. a third armrest ball; 2023. a fourth lever; 2024. a fourth armrest ball; 2025. a second support member; 3. a first fastener; 4. A second fastener; 5. and (4) a groove.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A water ring vacuum pump disc pump apparatus 100 according to an embodiment of the present invention will be described with reference to fig. 1.
The disc pump device 100 of the water ring vacuum pump of the embodiment of the invention comprises a disc pump piece 1 and a wrench assembly 2.
The disc pump element 1 comprises a first anchor ear 101 and a second anchor ear 102, and the first anchor ear 101 is connected with the second anchor ear 102 to form a disc pump hole 103 suitable for being fixed on a rotating shaft of the water ring vacuum pump. The wrench assembly 2 is arranged on the outer peripheral surface of the disc pump element 1.
When the disc pump device of the water ring vacuum pump disclosed by the embodiment of the invention is used for disc pump of a water ring vacuum pump with a larger diameter, the disc pump piece is sleeved on the rotating shaft of the water ring vacuum pump and fixed, and the rotating shaft of the water ring vacuum pump can be rotated by pulling the wrench assembly arranged on the outer peripheral surface of the disc pump piece. Simultaneously, the wrench assembly, the disc pump piece and the rotating shaft of the water ring vacuum pump form a labor-saving lever structure, so that the working strength of workers in the process of rotating the rotating shaft of the water ring vacuum pump is greatly reduced. Through carrying out the dish pump operation to the water ring vacuum pump, can reach the effect that prevents water ring vacuum pump's pump case internal surface and impeller from scaling rust, and then very big improvement water ring vacuum pump's security.
Therefore, the disc pump device of the water ring vacuum pump in the embodiment of the invention greatly improves the disc pump efficiency of the water ring vacuum pump for workers and reduces the workload of the workers. And then through carrying out the dish pump operation to water ring vacuum pump, greatly improved water ring vacuum pump's security.
In some embodiments, as shown in fig. 1, the wrench assembly 2 includes a first wrench member 201 and a second wrench member 202 arranged at intervals, the first wrench member 201 is connected to the first hoop 101, and the second wrench member 202 is connected to the second hoop 102.
Specifically, the first hoop 101 is a semicircular structure, the outer peripheral surface of the first hoop 101 is semicircular, and the first wrench 201 is connected to the outer peripheral surface of the first hoop 101.
Similarly, the second anchor ear 102 is a semi-circular structure so as to be connected with the first anchor ear 101 to form a disc pump hole 103 suitable for being fixed on the rotating shaft of the water ring vacuum pump. The outer peripheral surface of the second anchor ear 102 is semicircular, and the second wrench 202 is connected to the outer peripheral surface of the second anchor ear 102.
In some embodiments, as shown in fig. 1, the first wrench 201 includes a first wrench bar 2011 and a second wrench bar 2013, one end of the first wrench bar 2011 is connected to the first hoop 101, the other end of the first wrench bar 2011 extends in a direction away from the first hoop 101, and the other end of the first wrench bar 2011 has a first handrail ball 2012. One end of the second lever 2013 is connected to the first hoop 101, the other end of the second lever 2013 extends in a direction away from the first hoop 101, and the other end of the second lever 2013 is provided with a second handrail ball 2014.
Specifically, first trigger 2011 and second trigger 2013 are rod-like structures. The first and second wrenching bars 2011 and 2013 are circumferentially distributed on the outer peripheral surface of the first hoop 101 at intervals along the first hoop 101, and a first included angle is formed between the length direction of the first wrenching bar and the length direction of the second wrenching bar. The numerical value of the first included angle can be determined according to actual needs.
A first armrest ball 2012 and a second armrest ball 2014 are respectively disposed at the ends of the first trigger bar 2011 and the second trigger bar 2013. The first armrest ball 2012 and the second armrest ball 2014 prevent a worker from slipping off the first lever 2011 or the second lever 2013 when using the device. Meanwhile, the end parts of the first pull rod 2011 and the second pull rod 2013 are prevented from colliding with workers, and the safety of the water ring vacuum pump disc pump device 100 in the embodiment of the invention is greatly improved.
In some embodiments, as shown in fig. 1, the first wrench member 201 further includes a first support 2015, one end of the first support 2015 is connected to the first trigger 2011, and the other end of the first support 2015 is connected to the second trigger 2013. Specifically, in a projection plane orthogonal to the axis of the disc pump hole 103, the projection of the first support 2015 is an arc-shaped plane protruding toward the first hoop 101, and the first support 2015 is connected to the first hoop 101.
According to the disc pump device for the water ring vacuum pump, provided by the embodiment of the invention, the first support 2015 is arranged between the first pull rod 2011 and the second pull rod 2013, so that the structural strength of the first wrench 201 can be greatly improved, and the problem that the first wrench 201 is bent in the disc pump process is solved. Meanwhile, the first support 2015 is connected with the first hoop 101, so that the structural strength of the first wrench 201 is further improved.
In some embodiments, as shown in fig. 1, the second wrench 202 includes a third wrench bar 2021 and a fourth wrench bar 2023, one end of the third wrench bar 2021 is connected to the second hoop 102, the other end of the third wrench bar 2021 extends in a radial direction away from the second hoop 102, and the other end of the third wrench bar 2021 is provided with a third armhole 2022. One end of the fourth lever 2023 is connected to the second hoop 102, the other end of the fourth lever 2023 extends in a radial direction away from the second hoop 102, and the other end of the fourth lever 2023 is provided with a fourth handrail ball 2024.
Specifically, the third trigger 2021 and the fourth trigger 2023 are rod-shaped structures. The third pulling rod 2021 and the fourth pulling rod 2023 are circumferentially distributed on the outer circumferential surface of the second hoop 102 at intervals along the second hoop 102, and a second included angle is formed between the length direction of the third pulling rod and the length direction of the fourth pulling rod. The numerical value of the second included angle can be determined according to actual needs.
A third arm ball 2022 and a fourth arm ball 2024 are respectively disposed at the ends of the third trigger bar 2021 and the fourth trigger bar 2023. The third handrail ball 2022 and the fourth handrail ball 2024 can prevent the hands of the worker from slipping off the third triggering lever 2021 or the fourth triggering lever 2023 when the worker uses the device. Meanwhile, the end parts of the third pulling rod 2021 and the fourth pulling rod 2023 are prevented from colliding with workers, and the safety of the disc pump device 100 of the water ring vacuum pump in the embodiment of the invention is greatly improved.
In some embodiments, the second wrench 202 further comprises a second supporting member 2025, one end of the second supporting member 2025 is connected to the third wrench bar 2021, and the other end of the first supporting member 2015 is connected to the fourth wrench bar 2023. Specifically, in a projection plane orthogonal to the axis of the disc pump hole 103, the projection of the second support 2025 is an arc-shaped plane protruding toward the second hoop 102, and the second support 2025 is connected to the second hoop 102.
According to the disc pump device of the water ring vacuum pump in the embodiment of the invention, the two supporting pieces 2025 are arranged between the third pulling rod 2021 and the fourth pulling rod 2023, so that the structural strength of the second pulling rod 202 can be greatly improved, and the problem that the second pulling rod 202 is bent in the disc pump process is solved. Meanwhile, the second supporting element 2025 is connected to the second hoop 102, so as to further improve the structural strength of the second wrench 202.
In some embodiments, a groove 5 is formed inside any one of the first anchor ear 101 and the second anchor ear 102, and the groove 5 is matched with a protrusion on the rotating shaft of the water ring vacuum pump, so as to prevent the disc pump unit 1 from sliding relative to the rotating shaft of the water ring vacuum pump, thereby greatly improving the convenience and stability of the water ring vacuum pump disc pump apparatus 100 according to the embodiment of the invention.
In some embodiments, as shown in fig. 1, the water ring vacuum pump disc pump apparatus of the embodiments of the present invention further comprises a fastening assembly comprising a first fastening member 3 and a second fastening member 4. One end of the first hoop 101 is connected with one end of the second hoop 102 through the first fastening piece 3, and the other end of the first hoop 101 is connected with the other end of the second hoop 102 through the second fastening piece 4.
Specifically, as shown in fig. 2, one end of the first hoop 101 is provided with a first through hole 1011, the other end of the first hoop 101 is provided with a second through hole 1012, one end of the second hoop 102 is provided with a third through hole 1021, and the other end of the second hoop 102 is provided with a fourth through hole 1022.
As shown in fig. 3, the first fastening member 3 includes a first bolt 301 and a first nut 302, and the first bolt 301 sequentially passes through the first through hole 1011 and the third through hole 1021 to connect the first nut 302 to one end of the first hoop 101 and one end of the second hoop 102.
As shown in fig. 4, the second fastening member 4 includes a second bolt 401 and a second nut 402, and the second bolt 401 sequentially passes through the second through hole 1012 and the fourth through hole 1022 to be connected to the second nut 402, so as to connect the other end of the first anchor ear 101 to the other end of the second anchor ear 102.
According to the water ring vacuum pump disc pump device provided by the embodiment of the invention, the first fastening piece 3 and the second fastening piece 4 are arranged between the first hoop 101 and the second hoop 102, so that the first hoop 101 and the second hoop can be conveniently protected and installed on the rotating shaft of the water ring vacuum pump, and the convenience of the water ring vacuum pump disc pump device 100 provided by the embodiment of the invention is greatly improved.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A water ring vacuum pump disc pump device is characterized by comprising
The disc pump piece (1) comprises a first anchor ear (101) and a second anchor ear (102), and the first anchor ear (101) is connected with the second anchor ear (102) to form a disc pump hole (103) suitable for being fixed on a rotating shaft of the water ring vacuum pump;
and the wrench assembly (2) is arranged on the outer peripheral surface of the disc pump piece (1).
2. The water ring vacuum pump disc pump device as claimed in claim 1, wherein the wrench assembly (2) comprises a first wrench member (201) and a second wrench member (202) which are arranged at intervals, the first wrench member (201) is connected with the first hoop (101), and the second wrench member (202) is connected with the second hoop (102).
3. The water ring vacuum pump disc pump apparatus as claimed in claim 2, wherein the first wrench member (201) comprises a first wrench bar (2011) and a second wrench bar (2013), one end of the first wrench bar (2011) is connected to the first hoop (101), the other end of the first wrench bar (2011) extends in a direction away from the first hoop (101), and the other end of the first wrench bar (2011) has a first armrest ball (2012);
one end of the second trigger bar (2013) is connected with the first hoop (101), the other end of the second trigger bar (2013) extends in the direction away from the first hoop (101), and a second armrest ball (2014) is arranged at the other end of the second trigger bar (2013).
4. A water ring vacuum pump disc pump apparatus as claimed in claim 3, wherein the first wrench member (201) further comprises a first support member (2015), one end of the first support member (2015) being connected to the first wrench bar (2011) and the other end of the first support member (2015) being connected to the second wrench bar (2013).
5. A water ring vacuum pump disc pump arrangement according to claim 4, characterized in that the projection of the first support (2015), in a projection plane orthogonal to the axis of the disc pump bore (103), is an arc-shaped plane convex towards the first hoop (101), and the first support (2015) is connected with the first hoop (101).
6. The water ring vacuum pump disc pump device as claimed in claim 4, wherein the second wrench member (202) comprises a third wrench bar (2021) and a fourth wrench bar (2023), one end of the third wrench bar (2021) is connected to the second hoop (102), the other end of the third wrench bar (2021) extends in a radial direction away from the second hoop (102), and the other end of the third wrench bar (2021) is provided with a third armrest ball (2022);
one end of the fourth wrench rod (2023) is connected with the second hoop (102), the other end of the fourth wrench rod (2023) extends in the radial direction far away from the second hoop (102), and a fourth armrest ball (2024) is arranged at the other end of the fourth wrench rod (2023).
7. The water ring vacuum pump disc pump apparatus as claimed in claim 6, wherein the second wrench member (202) further comprises a second supporting member (2025), one end of the second supporting member (2025) is connected to the third wrench bar (2021), and the other end of the first supporting member (2015) is connected to the fourth wrench bar (2023).
8. The water ring vacuum pump disc pump apparatus as claimed in claim 7, wherein a projection of the second strut (2025) is an arc-shaped face convex toward the second hoop (102) in a projection plane orthogonal to an axis of the disc pump hole (103), and the second strut (2025) is connected to the second hoop (102).
9. A water ring vacuum pump disc pump arrangement according to any one of claims 1-8, characterized in that a groove (5) is provided inside either one of the first and second anchor ears (101, 102), which groove (5) cooperates with a projection on the water ring vacuum pump shaft to prevent the disc pump element (1) from sliding in relation to the water ring vacuum pump shaft.
10. The water ring vacuum pump disc pump apparatus as claimed in any one of claims 1-8, further comprising a fastening assembly comprising a first fastener (3) and a second fastener (4);
One end of the first hoop (101) is connected with one end of the second hoop (102) through the first fastener (3), and the other end of the first hoop (101) is connected with the other end of the second hoop (102) through the second fastener (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210377041.7A CN114750089A (en) | 2022-04-11 | 2022-04-11 | Pump device of water ring vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210377041.7A CN114750089A (en) | 2022-04-11 | 2022-04-11 | Pump device of water ring vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114750089A true CN114750089A (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210377041.7A Pending CN114750089A (en) | 2022-04-11 | 2022-04-11 | Pump device of water ring vacuum pump |
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| CN (1) | CN114750089A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002844A (en) * | 2016-06-17 | 2016-10-12 | 煤炭科学技术研究院有限公司 | Pump coiling device of water ring vacuum pump |
| CN211992781U (en) * | 2020-03-13 | 2020-11-24 | 上海外高桥造船有限公司 | Tool for debugging high-pressure slurry pump |
-
2022
- 2022-04-11 CN CN202210377041.7A patent/CN114750089A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002844A (en) * | 2016-06-17 | 2016-10-12 | 煤炭科学技术研究院有限公司 | Pump coiling device of water ring vacuum pump |
| CN211992781U (en) * | 2020-03-13 | 2020-11-24 | 上海外高桥造船有限公司 | Tool for debugging high-pressure slurry pump |
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