Liquid jet pump and mobile working machine

Abstract

The utility model provides a liquid jet pump and a mobile operation machine, a gas cavity comprises a pneumatic cavity, and a gas inlet channel and a gas outlet which are respectively communicated with two ends of the pneumatic cavity, and a liquid cavity comprises a gear cavity, and a liquid inlet channel and a jet channel which are respectively communicated with two ends of the gear cavity; the gear set is installed in the gear cavity, the meshing side of the gear set faces the liquid inlet channel, the separation side of the gear set faces the spraying channel, and the gear set comprises a driving wheel and a driven wheel meshed with the driving wheel; the pneumatic fan is installed in the pneumatic cavity, the driving wheel is in transmission connection with the pneumatic fan, and the pneumatic fan is used for driving the driving wheel to rotate under driving of the driving air source. The power source of the liquid jet pump is gas, the design concept of new energy products is met, and the liquid jet pump is clean and environmentally friendly; moreover, the configuration of a control switch, a wire harness and the like of the electric motor in the prior art can be omitted, and the manufacturing cost investment and later pollutant discharge can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid injection, and in particular relates to a liquid injection pump and a mobile operating machine. Background Art

[0002] At present, liquid injection usually adopts electric motors. For example, the injection pumps of windshield washer fluid in mobile working machinery are mostly driven by electric motors. The liquid inlet channel of ordinary electric motors is directly connected to the water tank. The electric motor needs to be manually switched on and off through the center console to inject liquid. The center console drives the electric motor to rotate through the power signal to extract the windshield washer fluid in the water tank to control the electric motor to inject windshield washer fluid. Finally, it is injected through the nozzle of the wiper to achieve the purpose of washing the glass. Due to the electric control of the electric motor, it is necessary to connect the manual switch and wiring harness from the center console of the mobile working machinery, involving many parts, resulting in a high cost of using electric motors for windshield washer fluid injection. Utility Model Content

[0003] The main purpose of the utility model is to provide a liquid injection pump and a mobile operating machine, aiming to solve the technical problem of high cost of liquid injection by using electric motors in the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a liquid injection pump, which includes: a pump housing, which is provided with a gas chamber and a liquid chamber isolated from each other, the gas chamber includes a pneumatic chamber and an air inlet channel and an air outlet respectively connected at both ends of the pneumatic chamber, the air inlet channel is used to communicate with a driving air source, and the air outlet is used to communicate with the outside atmosphere, the liquid chamber includes a gear chamber and a liquid inlet channel and an injection channel respectively connected at both ends of the gear chamber, the liquid inlet channel is used to communicate with a liquid source, and the injection port of the injection channel is used to be set corresponding to a target injection area; a gear set is installed in the gear chamber, the meshing side of the gear set faces the liquid inlet channel, and the separation side of the gear set faces the injection channel, the gear set includes a driving wheel and a driven wheel meshed with the driving wheel; a pneumatic fan is installed in the pneumatic chamber, the driving wheel and the pneumatic fan are transmission-connected, and the pneumatic fan is used to drive the driving wheel to rotate under the drive of the driving air source.

[0005] In an embodiment of the utility model, the pump housing includes: a main body cylinder, the pneumatic chamber and the gear chamber are both arranged in the main body cylinder; two docking cylinders are installed in the main body cylinder, and quick-insertion mechanisms are arranged in the two docking cylinders, and the quick-insertion mechanisms are used for quick-insertion with the connecting pipe for sealing, and the connecting pipe is used to connect the driving gas source or liquid source.

[0006] In an embodiment of the present utility model, the quick-insert mechanism further includes: a double-layer nozzle, including an inner sleeve and an outer sleeve connected to the inner sleeve, the outer sleeve being disposed around the outer side of the inner sleeve, and a quick-insert slot formed between the inner sleeve and the outer sleeve for the connection pipe to extend into; a locking assembly, sleeved between the inner sleeve and the docking cylinder and used for locking and sealing the connection pipe between the inner sleeve and the locking assembly.

[0007] In an embodiment of the present utility model, the locking assembly includes: a locking snap ring, provided with an inverted buckle for clamping the connection pipe; a locking plug, the locking snap ring being axially sealed between the locking plug and the outer sleeve along the axial direction of the inner sleeve, an annular protrusion for locking with the docking cylinder being provided on the outer wall of the locking plug, and a sealing boss for locking the inverted buckle being provided on the inner wall of the locking plug.

[0008] In an embodiment of the present utility model, the sealing boss is provided with a sealing inclined surface, and the locking snap ring is provided with an outer inclined surface matching the sealing inclined surface.

[0009] In an embodiment of the present utility model, the locking assembly further includes a sealing ring disposed in the locking plug, and the sealing ring seals the side of the locking plug away from the outer sleeve.

[0010] In an embodiment of the present utility model, the two docking cylinders are respectively a gas source docking cylinder and a liquid source docking cylinder, the pump housing further includes a spray cylinder, the spray channel is disposed in the spray cylinder, and the liquid source docking cylinder and the spray cylinder are relatively disposed along the radial direction of the main cylinder.

[0011] In an embodiment of the present utility model, the pneumatic fan and the driving wheel are coaxially threadedly connected through a driving shaft, and the driven wheel is mounted on the pump housing through a smooth shaft.

[0012] In an embodiment of the present utility model, a partition is detachably mounted in the pump housing, the partition is located between the gear chamber and the pneumatic chamber, and the partition is provided with mounting holes for mounting the driving shaft and the smooth shaft.

[0013] The present utility model also provides a mobile working machine, and the mobile working machine includes a driving gas source, a liquid source, and the liquid injection pump as described above.

[0014] Through the above technical solutions, the liquid injection pump provided by the embodiment of the present utility model has the following beneficial effects:

[0015] The gas chamber and the liquid chamber are isolated from each other to achieve water-gas separation. The air flow can flow out from the outlet after passing through the pneumatic chamber from the inlet of the air inlet channel, blowing the blades of the pneumatic fan in the pneumatic chamber to rotate counterclockwise, causing the pneumatic fan to drive the driving wheel to rotate, and the rotation of the gear drives the driven wheel to rotate clockwise. When the gear set performs rotational transmission, the disengaged side of the gear set disengages from the meshing, the volume becomes larger, and the pressure in the chamber is lower. Thus, the liquid in the liquid source is sucked into the liquid inlet channel through the liquid inlet of the liquid inlet channel and gradually fills the gear chamber. Then, the liquid follows the rotation of the gear set to reach the injection channel. The meshing side of the gear set re-engages, and the volume space becomes smaller. Due to the very tight gap between the gears, the liquid can overcome its own resistance and flow towards the injection channel, forming a high-pressure liquid flow, and finally spraying out from the injection port of the injection channel. In the present utility model, the power source of the liquid injection pump is gas, which conforms to the design concept of new energy products, is clean and environmentally friendly; and it can also omit the control switches, wire harnesses and other configurations of the electric motor in the prior art, which can reduce the manufacturing cost investment and the subsequent pollutant emissions; at the same time, the liquid injection pump can automatically adjust the amount and time of water spraying by the amount of ventilation, air flow speed and ventilation time, without electric control. In addition, the liquid injection pump is not an integrated water pump structure in the water tank, has a small size, does not need to occupy a large space, and has a wider application range.

[0016] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation section. Brief Description of the Drawings

[0017] The drawings are used to provide an understanding of the present utility model and form a part of the specification. Together with the following specific implementation, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0018] Figure 1 is a schematic cross-sectional structure diagram of a liquid injection pump according to an embodiment of the present utility model;

[0019] Figure 2 is a schematic cross-sectional structure diagram of the liquid injection pump in another cross-section according to an embodiment of the present utility model;

[0020] Figure 3 is a schematic cross-sectional structure diagram of the docking cylinder of the liquid injection pump according to an embodiment of the present utility model;

[0021] Figure 4 is a schematic partial cross-sectional structure diagram of the liquid injection pump according to an embodiment of the present utility model;

[0022] Figure 5 is a schematic diagram of the pump housing of the liquid injection pump according to an embodiment of the present utility model;

[0023] Figure 6 is a schematic structure diagram of the driving wheel and the pneumatic fan of the liquid injection pump according to an embodiment of the present utility model;

[0024] Figure 7 It is a schematic structural diagram of a driven wheel of a liquid injection pump according to an embodiment of the utility model;

[0025] Figure 8 It is a schematic diagram of the anti-channeling spacer ring structure of the liquid injection pump according to one embodiment of the utility model;

[0026] Figure 9 It is a schematic diagram of the double-layer nozzle structure of a liquid injection pump according to one embodiment of the utility model;

[0027] Figure 10 It is a schematic diagram of the locking collar structure of a liquid injection pump according to an embodiment of the utility model;

[0028] Figure 11 It is a schematic diagram of the locking plug structure of a liquid injection pump according to an embodiment of the utility model;

[0029] Figure 12 It is a schematic diagram of the partition structure of the liquid injection pump according to one embodiment of the utility model;

[0030] Figure 13 It is a schematic diagram of the cover plate structure of a liquid injection pump according to an embodiment of the utility model.

[0031] Description of Reference Numerals

[0032] Label Name Label Name

[0033] 100 Liquid injection pump 41 Double nozzle

[0034] 1 Pump housing 411 Inner casing

[0035] 11 Pneumatic chamber 412 Outer sleeve

[0036] 12 Gear cavity 4121 deformation hole

[0037] 13 Air intake channel 4122 limit fold

[0038] 14 Air outlet 42 Locking ring

[0039] 15 Liquid inlet channel 421 inverted

[0040] 16 Injection channel 422 outer slope

[0041] 17 Main body tube 423 limiter

[0042] 18 Butt sleeve 424 clamping part

[0043] 18a Air source connection tube 425 Deformation notch

[0044] 18b Liquid source connection tube 43 Locking plug

[0045] 181 locking groove 431 annular protrusion

[0046] 182 Step groove 432 Blocking boss

[0047] 19 Injection tube 433 blocking slope

[0048] 2 Gear set 44 Sealing ring

[0049] 21 driving wheel 5 partition

[0050] 22 driven wheel 51 connection part

[0051] 23 drive shaft 52 reinforcement part

[0052] 24 Optical axis 53 Mounting hole

[0053] 25 Anti-channeling spacer 6 Cover plate

[0054] 3 Pneumatic fan 61 screw hole

[0055] 4 Quick-insert mechanism 7 Connecting pipe DETAILED DESCRIPTION

[0056] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0057] The liquid injection pump according to the present invention will be described below with reference to the accompanying drawings.

[0058] like Figures 1 to 13 As shown, in an embodiment of the utility model, a liquid jet pump 100 includes a pump housing 1, a gear set 2 and a pneumatic fan 3. The pump housing 1 is provided with a gas chamber and a liquid chamber isolated from each other. The gas chamber includes a pneumatic chamber 11 and an air inlet channel 13 and an air outlet 14 respectively connected at both ends of the pneumatic chamber 11. The air inlet channel 13 is used to communicate with a driving air source, and the air outlet 14 is used to communicate with the outside atmosphere. The liquid chamber includes a gear chamber 12 and a liquid inlet channel 15 and an injection channel 16 respectively connected at both ends of the gear chamber 12. The liquid inlet channel 15 is used to communicate with the liquid source, and the injection port of the injection channel 16 is used to be set corresponding to the target injection area; the gear group 2 is installed in the gear cavity 12, the meshing side of the gear group 2 faces the liquid inlet channel 15, and the separation side of the gear group 2 faces the injection channel 16, and the gear group 2 includes a driving wheel 21 and a driven wheel 22 meshing with the driving wheel 21; the pneumatic fan 3 is installed in the pneumatic cavity 11, the driving wheel 21 and the pneumatic fan 3 are transmission-connected, and the pneumatic fan 3 is used to drive the driving wheel 21 to rotate under the drive of the driving air source.

[0059] Understandably, the liquid injection pump 100 in this embodiment is mainly used for injecting windshield washer fluid. The driving gas source can be high-pressure gas, and the liquid source can be the water tank, coolant or windshield washer fluid of a mobile working machine. The air inlet passage 13 can be connected to the driving gas source through the connecting pipe 7, and the liquid inlet passage 15 can be connected to the water source through the connecting pipe 7. The air inlet passage 13, the liquid inlet passage 15, and the injection passage 16 in this embodiment are all long strip-shaped passages. Among them, the cross-sectional size of the injection passage 16 is smaller than that of the liquid inlet passage 15, which can increase the liquid injection pressure of the liquid injection pump 100.

[0060] In this embodiment, the gas chamber and the liquid chamber are isolated from each other to achieve water-gas separation. The air flow can flow out from the air outlet 14 after passing through the pneumatic chamber 11 from the inlet of the air inlet passage 13, blowing the fan blades of the pneumatic fan 3 in the pneumatic chamber 11 to rotate counterclockwise, so that the pneumatic fan 3 drives the driving wheel 21 to rotate, and the rotation of the gear drives the driven wheel 22 to rotate clockwise. When the gear set 2 performs rotational transmission, the disengaged side of the gear set 2 disengages from the meshing, the volume becomes larger, and the pressure in the chamber is lower. Thus, the liquid in the liquid source is sucked into the liquid inlet passage 15 through the liquid inlet of the liquid inlet passage 15 and gradually fills the gear chamber 12. Then, the liquid follows the rotation of the gear set 2 to reach the injection passage 16. The meshing side of the gear set 2 re-engages, and the volume space becomes smaller. Due to the very tight meshing gap of the gears, the liquid can overcome its own resistance and flow to the injection passage 16, forming a high-pressure liquid flow, and finally spraying out from the injection port of the injection passage 16. In this embodiment, the power source of the liquid injection pump 100 is gas, which conforms to the design concept of new energy products, is clean and environmentally friendly; and it can also omit the control switch, wire harness and other configurations of the electric motor in the prior art, which can reduce the manufacturing cost input and the later pollutant emissions; at the same time, the liquid injection pump 100 can automatically adjust the amount and time of water spraying by the amount of ventilation, air flow speed, and ventilation time, without electronic control. In addition, the liquid injection pump 100 is not an integrated water pump structure in the water tank, has a small size, does not need to occupy a large space, and has a wider application range.

[0061] Such as Figure 5As shown in the figure, the pump housing 1 includes a main cylinder 17 and two docking cylinders 18. The pneumatic chamber 11 and the gear chamber 12 are both arranged in the main cylinder 17. The two docking cylinders 18 are installed on the main cylinder 17, and a quick-insert mechanism 4 is arranged in each of the two docking cylinders 18. The quick-insert mechanism 4 is used for quick and sealed insertion with the connecting pipe 7, and the connecting pipe 7 is used to connect the driving gas source or liquid source. In this embodiment, the main cylinder 17 and the two docking cylinders 18 are both hollow cylindrical tubes, with a simple structure and edge assembly. By integrating the two docking cylinders 18 into the main cylinder 17, the structural compactness of the pump housing 1 can be improved. The two docking cylinders 18 are both connected to the outer wall of the main cylinder 17. By arranging the quick-insert mechanism 4 in the two docking cylinders 18, the pipeline connection can be facilitated. After the connecting pipe 7 is inserted into the quick-insert mechanism 4, the pipeline sealing and fixing are realized, so as to realize the smooth entry and sealing of gas / liquid. The liquid jet pump 100 adopts a pipeline quick-insert design, which is convenient for the disassembly and assembly of the pipeline and convenient for maintenance.

[0062] In one embodiment, the quick-insert mechanism 4 further includes a double-layer nozzle 41 and a locking assembly. The double-layer nozzle 41 includes an inner sleeve 411 and an outer sleeve 412 connected to the inner sleeve 411. The outer sleeve 412 is arranged around the outer side of the inner sleeve 411, and a quick-insert slot for the connecting pipe 7 to extend into is formed between the inner sleeve 411 and the outer sleeve 412. The locking assembly is sleeved between the inner sleeve 411 and the docking cylinder 18 and is used to lock and seal the connecting pipe 7 between the inner sleeve 411 and the locking assembly.

[0063] As Figure 9 shown in the figure, in this embodiment, a limiting flange 4122 is arranged at the edge of the outer sleeve 412, and a stepped groove 182 matching the limiting flange 4122 can be arranged inside the docking cylinder 18 to limit the limiting flange 4122. A long strip-shaped deformation hole 4121 can also be opened on the outer sleeve 412 to facilitate the installation of the double-layer nozzle 41 into the docking cylinder 18. In this embodiment, the double-layer nozzle 41 is arranged, and a quick-insert slot is arranged between the inner sleeve 411 and the outer sleeve 412, which can facilitate the positioning and quick insertion of the connecting pipe 7. The length of the outer sleeve 412 is less than the length of the inner sleeve 411, and the length of the inner sleeve 411 is set corresponding to the length of the docking pipe. The outer end of the inner sleeve 411 is concave and close to the outer edge of the docking pipe. The locking assembly can lock the connecting pipe 7. The locking assembly is sleeved between the docking cylinder 18 and the inner sleeve 411, and the right end of the locking assembly abuts against the outer sleeve 412, which is convenient for the installation of the locking assembly.

[0064] As Figures 9 to 11 shown in the figure, the locking assembly includes a locking snap ring 42 and a locking plug 43. The locking snap ring 42 is provided with an undercut 421 for clamping the connecting pipe 7. The locking snap ring 42 is axially blocked between the locking plug 43 and the outer sleeve 412 along the pipe axis of the inner sleeve 411. The outer wall of the locking plug 43 is provided with an annular protrusion 431 for locking with the docking cylinder 18, and the inner wall of the locking plug 43 is provided with a plugging boss 432 for locking the undercut 421.

[0065] In this embodiment, the locking clamp 42 may include a limiting portion 423 and a clamping portion 424 connected to the limiting portion 423. The clamping portion 424 is provided with a deformation notch 425, which is a small open ring. The limiting portion 423 is a large limiting ring. The cross-sectional size of the limiting portion 423 is larger than the cross-sectional size of the clamping portion 424. The clamping portion 424 can extend into the locking plug 43. The end portions of the limiting portion 423 and the locking plug 43 are limitedly abutted. The undercut 421 is arranged on the inner wall of the clamping portion 424. The sealing boss 432 can limit the undercut 421. By performing multi-directional limiting on the limiting portion 423 and the undercut 421, the tightness of the fitting between the locking clamp 42 and the locking plug 43 can be improved.

[0066] The locking clamp 42 is provided with an undercut 421, which can prevent the connecting pipe 7 from detaching from the docking tube 18. The annular protrusion 431 is arranged on the outer wall of the locking plug 43. The docking tube 18 is provided with a locking groove 181 which cooperates with the annular protrusion 431. In order to facilitate the annular protrusion 431 to extend into the docking tube 18, a guide part is provided at the right end of the annular protrusion 431.

[0067] Specifically, the blocking boss 432 is provided with a blocking slope 433, and the locking collar 42 is provided with an outer slope 422 matching the blocking slope 433; and the locking assembly further includes a sealing ring 44 arranged in the locking plug 43, and the sealing ring 44 is sealed on the side of the locking plug 43 away from the outer sleeve 412. The blocking boss 432 in this embodiment is wedge-shaped and provided with a blocking slope 433, and the outer surface of the clamping portion 424 is an outer slope 422, and the outer slope 422 matches the blocking slope 433, which can ensure that there is a sufficient limiting area between the locking collar 42 and the locking plug 43, thereby ensuring the connection stability of the quick plug mechanism 4. The sealing ring 44 is an O-type sealing ring, which is arranged at one end of the quick plug mechanism 4 away from the outer sleeve 412, and can make the connecting pipe 7 and the inner sleeve 411 seal and match.

[0068] like Figures 1 to 5 As shown, the two docking tubes 18 are respectively a gas source docking tube 18a and a liquid source docking tube 18b, and the pump housing 1 also includes an injection tube 19, the injection channel 16 is arranged in the injection tube 19, and the liquid source docking tube 18b and the injection tube 19 are arranged opposite to each other along the radial direction of the main tube 17. Figure 2 As shown, the liquid source docking tube 18b and the injection tube 19 in this embodiment are arranged in a colinear manner, which can ensure that the liquid in the liquid source docking tube 18b can smoothly enter the injection tube 19, and the gas source docking tube 18a can be perpendicular to the liquid source docking tube 18b, and by forming an angle with each other, the compactness of the structure of the liquid injection pump 100 can be improved and miniaturization can be achieved. The cross-sectional size of the injection tube 19 is smaller than the cross-sectional size of the liquid source docking tube 18b, which can further reduce the volume of the liquid injection pump 100.

[0069] likeFigures 6 to 8 As shown, the pneumatic fan 3 and the driving wheel 21 are coaxially threadedly connected through the driving shaft 23, and the driven wheel 22 is installed on the pump housing 1 through the optical axis 24. A threaded section is provided at one end of the driving shaft 23 and is threadedly connected to the pneumatic fan 3. The driving wheel 21 and the pneumatic fan 3 are coaxially designed with thread locking. The rotation of the pneumatic fan 3 directly drives the driving wheel 21 to rotate. The driven wheel 22 is installed on the pump housing 1 through the optical axis 24 and meshes with the driving wheel 21. The transmission structure between the pneumatic fan 3 and the gear set 2 is simple, easy to assemble and has a low production cost.

[0070] In the embodiment of the utility model, a partition plate 5 is detachably installed in the pump housing 1, and the partition plate 5 is located between the gear chamber 12 and the pneumatic chamber 11. The partition plate 5 is provided with a mounting hole 53 for mounting the drive shaft 23 and the optical axis 24. Figure 12 and Figure 13 As shown, the partition plate 5 in this embodiment includes a reinforcement portion 52 and a connecting portion 51 connected to the outer edge of the reinforcement portion 52. The reinforcement portion 52 in this embodiment is a double-layer plate structure with a thickness greater than that of the connecting portion 51. The connecting portion 51 and the pump housing 1 can be detachably connected by screws or bolts, and the mounting holes 53 are all opened in the reinforcement portion 52 to ensure the mounting strength. The detachable partition plate 5 can facilitate the inspection and maintenance between the pneumatic fan 3 and the gear set 2.

[0071] The drive shaft 23 and the optical axis 24 are both sleeved with anti-slip spacer rings 25, which can be U-shaped spacer rings. The anti-slip spacer rings 25 can be set at the connection between the drive shaft 23, the optical axis 24 and the partition 5 and the pump housing 1 to prevent the drive shaft 23 and the optical axis 24 from slipping. The liquid jet pump 100 also includes a cover plate 6 with a screw hole 61, and the cover plate 6 can be detachably connected to the main body tube 17 through the screw hole 61, which can prevent other components from entering the main body tube 17 and interfering with the pneumatic fan 3.

[0072] The utility model also provides a mobile working machine, which includes a driving gas source, a liquid source and the liquid injection pump 100 as described above. The specific structure of the liquid injection pump 100 refers to the above embodiment. Since the mobile working machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. In one embodiment, the mobile working machine can be applied to a crane.

[0073] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0074] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection, an electrical connection, or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0075] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0076] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A liquid jet pump, characterized in that, The liquid injection pump (100) comprises: A pump housing (1) is provided with a gas cavity and a liquid cavity isolated from each other, the gas cavity comprising a pneumatic cavity (11) and an air inlet channel (13) and an air outlet (14) respectively connected at two ends of the pneumatic cavity (11), the air inlet channel (13) being used to communicate with a driving air source, the air outlet (14) being used to communicate with the outside atmosphere, the liquid cavity comprising a gear cavity (12) and a liquid inlet channel (15) and an injection channel (16) respectively connected at two ends of the gear cavity (12), the liquid inlet channel (15) being used to communicate with a liquid source, and the injection port of the injection channel (16) being used to be arranged corresponding to a target injection area; A gear set (2) is installed in the gear chamber (12), the meshing side of the gear set (2) faces the liquid inlet channel (15), and the separation side of the gear set (2) faces the injection channel (16), and the gear set (2) comprises a driving wheel (21) and a driven wheel (22) meshing with the driving wheel (21); The pneumatic fan (3) is installed in the pneumatic chamber (11), the driving wheel (21) and the pneumatic fan (3) are transmission-connected, and the pneumatic fan (3) is used to drive the driving wheel (21) to rotate under the drive of a driving air source.

2. The liquid injection pump according to claim 1, wherein, The pump housing (1) comprises: A main body tube (17), wherein the pneumatic chamber (11) and the gear chamber (12) are both arranged in the main body tube (17); Two docking tubes (18) are installed on the main tube (17). Both docking tubes (18) are provided with quick-insertion mechanisms (4). The quick-insertion mechanisms (4) are used for quick-insertion with the connecting tube (7) in a sealed manner. The connecting tube (7) is used for connecting with a driving gas source or a liquid source.

3. The liquid injection pump according to claim 2, wherein The quick-insertion mechanism (4) further comprises: A double-layer nozzle (41) comprises an inner sleeve (411) and an outer sleeve (412) connected to the inner sleeve (411), wherein the outer sleeve (412) is arranged outside the inner sleeve (411), and the inner sleeve (411) and the outer sleeve (412) form a quick slot for the connecting pipe (7) to extend into; A locking assembly is sleeved between the inner sleeve (411) and the docking tube (18) and is used to lock and seal the connecting tube (7) between the inner sleeve (411) and the locking assembly.

4. The liquid injection pump according to claim 3, wherein, The locking assembly comprises: A locking clamp (42) provided with an undercut (421) for clamping the connecting pipe (7); A locking plug (43), wherein the locking collar (42) is sealed between the locking plug (43) and the outer sleeve (412) along the axial direction of the inner sleeve (411), the outer wall of the locking plug (43) is provided with an annular protrusion (431) for locking with the docking sleeve (18), and the inner wall of the locking plug (43) is provided with a sealing boss (432) for locking the undercut (421).

5. The liquid injection pump according to claim 4, wherein The blocking boss (432) is provided with a blocking bevel (433), and the locking collar (42) is provided with an outer bevel (422) matching the blocking bevel (433).

6. The liquid injection pump according to claim 4, characterized in that, The locking assembly further includes a sealing ring (44) disposed within the locking plug (43), and the sealing ring (44) is sealed on a side of the locking plug (43) away from the outer sleeve (412).

7. The liquid injection pump according to any one of claims 2 to 6, characterized in that, The two docking cylinders (18) are respectively a gas source docking cylinder (18a) and a liquid source docking cylinder (18b). The pump housing (1) further includes a spray cylinder (19). The spray channel (16) is disposed within the spray cylinder (19), and the liquid source docking cylinder (18b) and the spray cylinder (19) are disposed opposite to each other along the radial direction of the main cylinder (17).

8. The liquid injection pump according to any one of claims 1 to 6, characterized in that, The pneumatic fan (3) and the driving wheel (21) are coaxially threadedly connected through a driving shaft (23), and the driven wheel (22) is mounted on the pump housing (1) through a smooth shaft (24).

9. The liquid injection pump according to claim 8, wherein, A partition plate (5) is detachably installed within the pump housing (1). The partition plate (5) is located between the gear chamber (12) and the pneumatic chamber (11). The partition plate (5) is provided with mounting holes (53) for installing the driving shaft (23) and the smooth shaft (24).

10. A mobile working machine, characterized in that, The mobile working machine includes a driving gas source, a liquid source, and the liquid injection pump (100) according to any one of claims 1 to 9.

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