CN113074100A - Air pump with dust removal anti-blocking structure - Google Patents
Air pump with dust removal anti-blocking structure Download PDFInfo
- Publication number
- CN113074100A CN113074100A CN202110509380.1A CN202110509380A CN113074100A CN 113074100 A CN113074100 A CN 113074100A CN 202110509380 A CN202110509380 A CN 202110509380A CN 113074100 A CN113074100 A CN 113074100A
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- China
- Prior art keywords
- air inlet
- air
- hole
- dust removal
- pump
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
Abstract
The air pump with a dust removal and anti-blocking structure comprises a pump body, wherein a main air inlet hole, an air inlet cavity and an air outlet cavity are arranged on the pump body, the main air inlet hole is communicated with the air inlet cavity, the air inlet cavity is communicated with the air outlet cavity through an air outlet hole, a first valve body is arranged on the main air inlet hole, an air inlet sleeve connected with the main air inlet hole is arranged on the pump body, a filter screen is arranged in the air inlet sleeve, a movable baffle plate is arranged in the air inlet cavity, an auxiliary air inlet hole is arranged on the side wall of the air inlet cavity, a dust removal air hole communicated with the air inlet cavity is arranged on the bottom wall of the air inlet cavity, the other end of the dust removal air hole is communicated with the main air inlet hole at the outer side of the first valve body, the main air inlet hole and the air outlet hole are jointly used as a first unit, the auxiliary air, need not to change and dismantle the filter screen, the structure is ingenious, and the clearance is convenient.
Description
Technical Field
The invention belongs to the technical field of air pump air inlet dust prevention.
Background
The air pump, namely "air pump", from a confined space get rid of the air or to a device that the confined space added the air, in use, the air intake of air pump can be followed the external air extraction and compressed, but the operational environment of air pump is all not so clean under many circumstances, too much dust granule can block up the air intake and lead to the air pump trouble in the air, current air pump filter equipment, only simple increase devices such as filter screen, just need to dismantle specially after long-time the use and wash the change, it is very troublesome, it solves this problem to provide an air pump filter equipment convenient to clean now.
Disclosure of Invention
The invention aims to provide an air pump with a dust removal and anti-blocking structure, which can perform back blowing dust removal by utilizing the self power of the air pump without replacing and disassembling a filter screen or additionally adding a driving device.
The invention provides an air pump with a dust-removing and anti-blocking structure, which comprises a pump body, wherein a main air inlet hole, an air inlet cavity and an air outlet cavity are arranged on the pump body, the main air inlet hole is communicated with the air inlet cavity, the air inlet cavity is communicated with the air outlet cavity through an air outlet hole, a first valve body is arranged on the path of the main air inlet hole communicated with the air inlet cavity, an air inlet sleeve connected with the main air inlet hole is arranged on the pump body, a filter screen vertical to the axis of the air inlet sleeve is arranged in the air inlet sleeve, a movable baffle movably connected to the bottom wall communicated with the main air inlet hole is arranged in the air inlet cavity, the main air inlet hole and the air outlet hole are positioned on the same side wall of the air inlet cavity, an auxiliary air inlet hole is arranged on the side wall of the air inlet cavity, a dust-removing air hole communicated, the vacuum cleaner is characterized in that the main air inlet hole and the exhaust hole are jointly used as a first unit, the auxiliary air inlet hole and the dust removal air hole are jointly used as a second unit, the movable baffle blocks the first unit or the second unit in an alternative mode, a pushing screw rod is arranged on the pump body, one end of the pushing screw rod penetrates through the side wall of the pump body and is rotatably connected with the movable baffle in the air inlet cavity, and the pushing screw rod is in threaded connection with the pump body.
Preferably, a second valve body is arranged on a path through which the auxiliary air inlet hole is communicated with the air inlet cavity.
Preferably, the cross section of the movable baffle is of an L-shaped structure, and two side walls in the width direction of the movable baffle are attached to the side wall of the air inlet cavity.
Preferably, a sealing column coaxial with the auxiliary air inlet hole is arranged on the side wall of the movable baffle facing the auxiliary air inlet hole, and the sealing column can be inserted into the auxiliary air inlet hole to seal the auxiliary air inlet hole.
Preferably, the end faces of the movable baffle, which face the main air inlet hole and the auxiliary air inlet hole, are provided with sealing layers.
Preferably, the side wall of the air inlet sleeve is provided with a sliding groove, and the outer edge part of the filter screen is provided with a sliding block arranged in the sliding groove.
Preferably, the lateral wall cover of air inlet sleeve is equipped with the movable sleeve, the movable sleeve is located the outside of filter screen, be equipped with the spliced pole on the terminal surface of movable sleeve orientation filter screen one side, the one end of spliced pole runs through slider and filter screen swing joint, be connected with the spring between the terminal surface of slider and movable sleeve.
Preferably, the outer side wall of the air inlet sleeve is provided with a limiting table located on the inner side of the filter screen, and the end face of the limiting table is provided with a through hole corresponding to the movement range of the connecting column.
Preferably, the movable sleeve is provided with an elastic hook, the elastic hook can be clamped on the end face of the limiting table to position the movable sleeve, and the inner side wall of the movable sleeve is provided with a guide block which is connected in the sliding groove in a sliding manner.
In summary, the technical scheme of the invention at least has the following beneficial effects:
1. the air inlet sleeve and the filter screen are additionally arranged at the air inlet of the air pump, so that the air entering the air pump can be well filtered, impurities are prevented from entering, and the service life of the air pump is prevented from being influenced;
2. by designing the auxiliary air inlet holes and the dust removal air holes, an additional air path for removing dust by the filter screen is added, and the normal use of the air pump is not influenced;
3. the adjustable movable baffle is designed, the movable baffle can alternately block the first unit and the second unit, and the normal work of the air pump and the action switching of the dust removal action are realized through the change of the direction of the air flow path;
4. by adopting the structural pipeline design of the air pump based on the air inlet cavity, when in a dust removal state, external air enters the air inlet cavity and then is discharged from the main air inlet to realize back flushing of the filter screen through the self-operation of the air pump; and additional compression equipment is not required.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a front sectional view of the present invention in a normal operating state (gas flow);
FIG. 2 is a front sectional view of the present invention in a dust removing operation (gas flow);
FIG. 3 is a top sectional view of the present invention;
FIG. 4 is an enlarged view of the screen portion of FIG. 1 according to the present invention;
FIG. 5 is a view of the position of the screen of FIG. 4 in the de-dusting position of the present invention;
FIG. 6 is a front view of the air inlet sleeve construction of the present invention;
FIG. 7 is a top view of a screen construction of the present invention;
fig. 8 is a schematic structural view of a movable baffle (movably connected with a pushing screw) of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-8, the invention provides an air pump with a dust-removing and anti-blocking structure, which comprises a pump body 1, wherein a main air inlet hole 2, an air inlet cavity 3 and an air outlet cavity 4 are arranged on the pump body 1, the main air inlet hole 2 is communicated with the air inlet cavity 3, the air inlet cavity 3 is communicated with the air outlet cavity 4 through an air outlet hole 5, a first valve body 6 is arranged on a path through which the main air inlet hole 2 is communicated with the air inlet cavity 3, an air bag or a piston rod (not shown in the invention) for intermittently producing negative pressure is arranged in the air inlet cavity 4, and external air is sucked into the air inlet cavity 4 through the negative pressure; be equipped with the air inlet sleeve 7 of being connected with main inlet port 2 on the pump body 1, be equipped with the filter screen 8 of the 7 axes of perpendicular to air inlet sleeve in the air inlet sleeve 7, when the air pump normally works, the gas flow path of air pump refers to figure 1, gaseous entering from air inlet sleeve 7, pass filter screen 8 back through main inlet port 2 get into in the chamber 3 that admits air, then get into the air outlet chamber 4 through exhaust hole 5, discharge through the venthole at last, the position of filter screen 8 is shown as figure 1, 4 this moment, impurity in the gas can be attached to and can't get into inside the pump body 1 on filter screen 8, the realization is to gaseous filtration. A movable baffle plate 9 movably connected to the bottom wall communicated with the main air inlet hole 2 is arranged in the air inlet cavity 3, the main air inlet hole 2 and the exhaust hole 5 are positioned on the same side wall of the air inlet cavity 3, an auxiliary air inlet hole 10 is arranged on the side wall of the air inlet cavity 3, a dust removing air hole 11 communicated with the air inlet cavity 3 is arranged on the bottom wall of the air inlet cavity 3, the other end of the dust removing air hole 11 is communicated with the part, positioned on the outer side of the first valve body 6, of the main air inlet hole 2 and the exhaust hole 5 jointly serve as a first unit, the auxiliary air inlet hole 10 and the dust removing air hole 11 jointly serve as a second unit, and the movable baffle plate 9 blocks the first; when the air pump works normally, the movable baffle 9 is used for plugging the second unit, after the air pump works for a certain time, the filter screen needs to be cleaned, at the moment, the position of the movable baffle 9 is moved to the position for plugging the first unit, so that the auxiliary air inlet 10 and the dust removal air hole 11 are not plugged any more, at the moment, the air pump enters a dust removal working state, at the moment, after the air pump is started, the air flow path in the air pump is shown in figure 2, external air enters the air inlet cavity 3 from the auxiliary air inlet 10 and is then discharged through the dust removal air hole 11, and as the dust removal air hole 11 is communicated with the main air inlet 2, the external air is equivalently discharged from the main air inlet 2, and the back flushing of the filter screen 8 is realized.
In the technical scheme, the pump body 1 is provided with the pushing screw 12 for adjusting the position of the movable baffle 9, one end of the pushing screw 12 penetrates through the side wall of the pump body 1 to be rotatably connected with the movable baffle 9 in the air inlet cavity 3, the pushing screw 12 is in threaded connection with the pump body 1, and a threaded connection structure is adopted, so that two layers of effects are achieved, firstly, the adjustment is more accurate, and meanwhile, a certain pressure can be applied to the movable baffle 9 to ensure the sealing effect; secondly, the air tightness can be ensured to a certain extent by threaded connection, and it is noted that in order to further increase the sealing effect at the threaded connection position, a cylinder structure with a smooth end can be added at the connection position of the movable baffle plate 9 and the pushing screw 12, and a hole site matched with the cylinder structure is designed at one end of the inner side of the threaded hole of the pump body 1, so that the cylinder structure can be matched with the threaded connection to achieve a better sealing effect in normal operation.
In order to ensure the sealing effect of the air pump during normal operation, a second valve body 13 is arranged on a path through which the auxiliary air inlet hole 10 is communicated with the air inlet cavity 3, wherein the second valve body 13 is also of a one-way valve structure, so that gas brought in the air inlet cavity 3 cannot be discharged from the auxiliary air inlet hole 10 during normal operation of the air pump, and in addition, a one-way valve can be arranged on the dust removal air hole to ensure that the gas cannot be sucked from the dust removal air hole 11 and can only be discharged during actual design.
In order to make the movement of the movable baffle 9 more stable, the cross section of the movable baffle 9 is designed to be an L-shaped structure, and two side walls in the width direction of the movable baffle 9 are attached to the side walls of the air inlet cavity 3, so that the movement of the movable baffle 9 is limited by the side walls of the air inlet cavity 3, the whole structure is more stable, and the sealing effect is improved.
In order to further improve the sealing effect, a sealing column 14 coaxial with the auxiliary air inlet hole 10 is arranged on the side wall of the movable baffle plate 9 facing the auxiliary air inlet hole 10, the diameter of the sealing column 14 is smaller than that of the auxiliary air inlet hole 10, the movement range of the sealing column 14 is intersected with the inner area of the auxiliary air inlet hole 10 at one end of the air inlet cavity 3, as shown in the attached drawings 1 and 8, and in addition, a sealing layer 15 is arranged on the end face of the movable baffle plate 9 facing the main air inlet hole 2 and the end face of the auxiliary air inlet hole 10, and the sealing layer 15 can be made of.
In order to improve the cleaning efficiency of the filter screen 8, a sliding groove 16 is formed in the side wall of the air inlet sleeve 7, and a sliding block 17 installed in the sliding groove 16 is arranged at the outer edge of the filter screen 8; the outer side wall of the air inlet sleeve 7 is sleeved with a movable sleeve 18, the movable sleeve 18 is positioned on the outer side of the filter screen 8, a connecting column 19 is arranged on the end face of the movable sleeve 18, which faces one side of the filter screen 8, one end of the connecting column 19 penetrates through a sliding block 17 to be movably connected with the filter screen 8, and a spring 20 is connected between the sliding block 17 and the end face of the movable sleeve 18; the outer side wall of the air inlet sleeve 7 is provided with a limiting table 21 positioned on the inner side of the filter screen 8, and the end surface of the limiting table 21 is provided with a through hole 22 corresponding to the movement range of the connecting column 19; the movable sleeve 18 is provided with an elastic hook 23, the elastic hook 23 can be clamped on the end surface of the limiting table 21 to position the movable sleeve 18, and the inner side wall of the movable sleeve 18 is provided with a guide block 24 which is connected in the sliding groove 16 in a sliding manner; in normal operation, the movable sleeve 18 is clamped on the limiting table 21 through the elastic clamping hook 23, and the filter screen 8 is pressed on the limiting table 21 through the spring 20, as shown in fig. 4, so that the position of the filter screen 8 is fixed; when the filter screen 8 needs to be cleaned in a back blowing mode, the limiting table 21 is loosened by the elastic clamping hook 23 of the movable sleeve 18 at the moment, the filter screen 8 is moved to the tail end of the air inlet sleeve 7 through the movable sleeve 18, as shown in the attached drawing 5, the position of the filter screen 8 is not limited, the filter screen 8 can vibrate under the action of the spring 20, when the back blowing mode is carried out, the filter screen 8 can vibrate under the interaction of wind power and the spring 20 at the moment, the attention is needed, in order to guarantee a better vibration effect, a certain gap can be designed at the connecting part of the connecting column 19 and the sliding block 17, so that a larger vibration effect can be achieved, and the filter screen 8 can be cleaned better by cleaning attached impurities.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. The air pump with the dust removal and anti-blocking structure comprises a pump body (1), wherein a main air inlet hole (2), an air inlet cavity (3) and an air outlet cavity (4) are arranged on the pump body (1), the main air inlet hole (2) is communicated with the air inlet cavity (3), the air inlet cavity (3) is communicated with the air outlet cavity (4) through an air outlet hole (5), a first valve body (6) is arranged on the path through which the main air inlet hole (2) is communicated with the air inlet cavity (3), the air pump is characterized in that an air inlet sleeve (7) connected with the main air inlet hole (2) is arranged on the pump body (1), a filter screen (8) vertical to the axis of the air inlet sleeve (7) is arranged in the air inlet sleeve (7), a movable baffle (9) movably connected to the bottom wall communicated with the main air inlet hole (2) is arranged in the air inlet cavity (3), and the main air inlet hole (, be equipped with vice inlet port (10) on the lateral wall in air inlet chamber (3), be equipped with dust removal gas pocket (11) with air inlet chamber (3) intercommunication on the diapire in air inlet chamber (3), the other end and the main inlet port (2) of dust removal gas pocket (11) are located the position intercommunication of the upstream side of first valve body (6), main inlet port (2) and exhaust hole (5) are as first unit jointly, and vice inlet port (10) and dust removal gas pocket (11) are as the second unit jointly, first unit of shutoff or second unit is selected in adjustable fender (9), be equipped with propelling movement screw rod (12) on the pump body (1), the one end of propelling movement screw rod (12) runs through pump body (1) lateral wall and is rotated with adjustable fender (9) in air inlet chamber (3) and is connected, be threaded connection between propelling movement screw rod (12) and the pump body (1).
2. The air pump with a dust-removing and anti-blocking structure as claimed in claim 1, wherein a second valve body (13) is arranged on a path of the auxiliary air inlet hole (10) communicated with the air inlet cavity (3).
3. The air pump with the dust removal and anti-blocking structure as claimed in claim 1, wherein the cross section of the movable baffle (9) is of an L-shaped structure, and two side walls in the width direction of the movable baffle (9) are attached to the side walls of the air inlet cavity (3).
4. The air pump with the dust removal and blockage prevention structure as claimed in claim 1, wherein a sealing column (14) coaxial with the auxiliary air inlet hole (10) is arranged on the side wall of the movable baffle (9) facing the auxiliary air inlet hole (10), and the sealing column can be inserted into the auxiliary air inlet hole (10) to seal the auxiliary air inlet hole (10).
5. The air pump with the dust removal and anti-blocking structure as claimed in claim 1, wherein the end faces of the movable baffle (9) facing the main air inlet hole (2) and the auxiliary air inlet hole (10) are provided with sealing layers (15).
6. The air pump with the dust removal and anti-blocking structure as claimed in claim 1, wherein a sliding groove (16) is formed in the side wall of the air inlet sleeve (7), and a sliding block (17) installed in the sliding groove (16) is arranged at the outer edge of the filter screen (8).
7. The air pump with dust removal anti-blocking structure of claim 6, characterized in that, the lateral wall cover of air inlet sleeve (7) is equipped with movable sleeve (18), movable sleeve (18) are located the outside of filter screen (8), be equipped with spliced pole (19) on the terminal surface of movable sleeve (18) towards filter screen (8) one side, the one end of spliced pole (19) runs through slider (17) and filter screen (8) swing joint, be connected with spring (20) between the terminal surface of slider (17) and movable sleeve (18).
8. The air pump with the dust removal and blockage prevention structure is characterized in that a limiting table (21) located on the inner side of the filter screen (8) is arranged on the outer side wall of the air inlet sleeve (7), and a through hole (22) corresponding to the movement range of the connecting column (19) is formed in the end face of the limiting table (21).
9. The air pump with the dust-removing and anti-blocking structure as claimed in claim 8, wherein the movable sleeve (18) is provided with an elastic hook (23), the elastic hook (23) can be clamped on the end surface of the limit table (21) to position the movable sleeve (18), and the inner side wall of the movable sleeve (18) is provided with a guide block (24) which is slidably connected in the sliding groove (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110509380.1A CN113074100B (en) | 2021-05-11 | 2021-05-11 | Air pump with dust removal anti-blocking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110509380.1A CN113074100B (en) | 2021-05-11 | 2021-05-11 | Air pump with dust removal anti-blocking structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113074100A true CN113074100A (en) | 2021-07-06 |
| CN113074100B CN113074100B (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110509380.1A Active CN113074100B (en) | 2021-05-11 | 2021-05-11 | Air pump with dust removal anti-blocking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113074100B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227354A (en) * | 2021-11-25 | 2022-03-25 | 建湖县富马电子设备有限公司 | Perforating machine work drilling plummer |
| CN114483520A (en) * | 2022-01-30 | 2022-05-13 | 嵊州市玖和机电有限公司 | Air pump with blowing and filtering functions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000024384A (en) * | 1998-07-07 | 2000-01-25 | Hirano Denki Kk | Bath water pump built in washing machine having filter cleaning function |
| US20150027311A1 (en) * | 2013-07-26 | 2015-01-29 | Cnh America Llc | Air Intake System for a Work Vehicle |
| CN207212634U (en) * | 2017-09-28 | 2018-04-10 | 内蒙聚力工程爆破有限公司 | A kind of air compressor machine blows filter equipment automatically |
| CN108201740A (en) * | 2016-12-17 | 2018-06-26 | 重庆市银盛模具有限公司 | Injection mold exhaust-gas treatment pipe |
| CN208416973U (en) * | 2018-05-31 | 2019-01-22 | 四川三台力达泵业有限公司 | A kind of self priming pump to clean |
| CN213116625U (en) * | 2020-07-24 | 2021-05-04 | 徐州汉鼎矿山机械有限公司 | High-efficiency energy-saving type variable-frequency compressor air inlet valve for mine |
-
2021
- 2021-05-11 CN CN202110509380.1A patent/CN113074100B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000024384A (en) * | 1998-07-07 | 2000-01-25 | Hirano Denki Kk | Bath water pump built in washing machine having filter cleaning function |
| US20150027311A1 (en) * | 2013-07-26 | 2015-01-29 | Cnh America Llc | Air Intake System for a Work Vehicle |
| CN108201740A (en) * | 2016-12-17 | 2018-06-26 | 重庆市银盛模具有限公司 | Injection mold exhaust-gas treatment pipe |
| CN207212634U (en) * | 2017-09-28 | 2018-04-10 | 内蒙聚力工程爆破有限公司 | A kind of air compressor machine blows filter equipment automatically |
| CN208416973U (en) * | 2018-05-31 | 2019-01-22 | 四川三台力达泵业有限公司 | A kind of self priming pump to clean |
| CN213116625U (en) * | 2020-07-24 | 2021-05-04 | 徐州汉鼎矿山机械有限公司 | High-efficiency energy-saving type variable-frequency compressor air inlet valve for mine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227354A (en) * | 2021-11-25 | 2022-03-25 | 建湖县富马电子设备有限公司 | Perforating machine work drilling plummer |
| CN114483520A (en) * | 2022-01-30 | 2022-05-13 | 嵊州市玖和机电有限公司 | Air pump with blowing and filtering functions |
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| Publication number | Publication date |
|---|---|
| CN113074100B (en) | 2022-02-01 |
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