CN219023941U - Multichannel dosing pump - Google Patents

Abstract

The utility model discloses a multichannel dosing pump, and relates to the field of dosing equipment. The multi-channel dosing pump includes threads an upper case and a lower case connected; a first pipeline is vertically arranged in the lower shell and is communicated with a water inlet pipeline; a water outlet channel is arranged between the pipe wall of the first pipeline and the lower shell; also comprises a plurality of dosing structures, wherein the dosing structures are arranged on the upper surface of the container, the dosing structure is respectively connected with the first pipeline; the movable valve body is movably connected with the upper shell, and the lower part of the movable valve body is movably connected with the first pipeline. The utility model can be used for preparing various medicines through the movable valve body simultaneously quantitatively sucking the mixture into a first pipeline for mixing, multiple proportional pumps are not required to be combined.

Description

Multichannel dosing pump

Technical Field

The utility model relates to the field of dosing equipment, in particular to a multichannel dosing pump.

Background

In a large-scale farm, in order to improve the drug adding efficiency, farmers often add drugs into a waterline pipeline and rapidly convey the drugs to various houses through the waterline. At present, more hydrodynamic force proportion pumps are used in farms, an external power supply is not needed for the hydrodynamic force proportion pumps, quantitative addition of medicines into a waterline pipeline can be realized only through water flow driving, and the addition proportion of the medicines cannot be influenced by water flow pressure. However, at present, the hydrodynamic force proportion pump can only add one drug, and the selling price is higher, if a plurality of drugs are needed to be added, the hydrodynamic force proportion pumps can only be combined, and the cultivation cost of farmers is greatly increased.

It can be seen that there is a need for improvements and improvements in the art.

Disclosure of Invention

In view of the shortcomings of the prior art, the utility model aims to provide a multichannel dosing pump, which aims to solve the technical problem that only one drug can be added in a hydrodynamic force proportion pump in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a multichannel dosing pump comprises an upper shell and a lower shell which are in threaded connection; a first pipeline is vertically arranged in the lower shell and is communicated with a water inlet pipeline; a water outlet channel is arranged between the pipe wall of the first pipeline and the lower shell;

the device also comprises a plurality of dosing structures, wherein the dosing structures are respectively connected with the first pipeline;

the movable valve body is movably connected with the upper shell, and the lower part of the movable valve body is movably connected with the first pipeline; the movable valve body is used for reciprocating under the action of water flow to suck medicines into the first pipeline.

The multi-channel dosing pump comprises a movable valve body, a valve body and a valve body, wherein the movable valve body comprises a piston and a movable sealing structure arranged on the piston; the upper part of the piston is movably connected with the upper shell, and the lower part of the piston is inserted into the first pipeline and is movably connected with the first pipeline; the piston divides the inner cavity of the upper shell into an upper cavity and a lower cavity, and the first pipeline, the upper cavity, the lower cavity and the water outlet channel are sequentially communicated; the movable sealing structure is used for controlling the upper cavity to be communicated with the lower cavity and the first pipeline respectively.

The multichannel dosing pump is characterized in that at least one first through hole is formed in the bottom of the piston, and the first through hole is communicated with the first pipeline and the upper cavity; the top of piston is provided with at least one second through-hole, second through-hole intercommunication cavity and lower cavity, movable seal structure is used for controlling the switching of first through-hole and second through-hole.

The multi-channel dosing pump comprises a movable sealing structure, a movable sealing structure and a movable sealing structure, wherein the movable sealing structure comprises a transmission rod, an elastic connecting piece and a fixing piece; two ends of the elastic connecting piece are respectively and movably connected with the transmission rod and the fixing piece; the fixing piece is fixedly connected with the piston; the lower part of the transmission rod passes through the bottom of the piston, and is provided with at least one first sealing piece which is used for sealing the first through hole; the upper part of the transmission rod is provided with at least one second sealing piece, and the second sealing piece is used for closing the second through hole.

The multichannel dosing pump comprises an elastic connecting piece and a first spring, wherein the elastic connecting piece comprises a sleeve and a telescopic rod inserted into the sleeve, the sleeve is internally provided with the first spring, and the insertion end of the telescopic rod is fixedly connected with the first spring; the outer side ends of the sleeve and the telescopic rod are respectively and movably connected with the fixing piece and the transmission rod.

The multichannel dosing pump comprises a dosing structure and a multichannel dosing pump body, wherein the dosing structure comprises a proportion adjusting pipe and an elastic sealing element arranged in the proportion adjusting pipe; the outlet end of the proportion regulating pipe is communicated with the first pipeline, and the inlet end of the proportion regulating pipe is used for being connected with the liquid medicine barrel; the elastic sealing piece is used for sealing the inlet of the proportion adjusting pipe; the liquid suction rod is arranged on the piston, inserted into the proportion adjusting pipe and used for sucking out the liquid medicine in the proportion adjusting pipe.

The multichannel charge pump, wherein, the bottom of drawing liquid pole is provided with the sealing washer, be provided with a plurality of third through-holes on the sealing washer, the top surface of sealing washer is provided with a plurality of handhole doors, handhole door and sealing washer swing joint are used for covering the third through-hole.

The multi-channel dosing pump comprises a first spring and a sealing cover, wherein the elastic sealing piece comprises a second spring and a sealing cover; a fixed block is arranged in the proportion adjusting pipe, and two ends of the second spring are fixedly connected with the fixed block and the sealing cover respectively; the sealing cover is abutted with the bottom of the inner side wall of the proportion adjusting pipe and used for sealing an inlet of the proportion adjusting pipe.

The multichannel dosing pump comprises a proportional regulating pipe and a regulating shell, wherein the proportional regulating pipe comprises a second pipeline and a regulating shell, and external threads are arranged on the upper part of the outer side wall of the second pipeline; the lower part of the inner side wall of the adjusting shell is provided with an internal thread, and the adjusting shell is in threaded connection with the second pipeline; a third pipeline is sleeved in the adjusting shell, the lower part of the third pipeline is fixedly connected with the adjusting shell, and the third pipeline is inserted into the second pipeline; the lower part of the liquid suction rod is inserted into the third pipeline.

The multichannel dosing pump is characterized in that a first connecting pipeline is further arranged on the water outlet channel, and the inlet end of the first connecting pipeline is communicated with at least one second pipeline; the first connecting pipeline is provided with a first one-way valve and a first switch; a first partition is arranged in the second pipeline; the first partition is positioned above the joint of the first connecting pipeline and the second pipeline; the liquid suction rod penetrates through the first partition; the first partition is provided with a first water passing channel, and the first water passing channel is provided with a second switch.

The beneficial effects are that:

the utility model provides a multichannel dosing pump, which is connected with a plurality of dosing structures, wherein the dosing structures are used for adding a plurality of different liquid medicines, the liquid medicines can be added into a first pipeline under the reciprocating motion of a movable valve body, and the combination of a plurality of proportional pumps is not needed, so that the equipment purchase cost is greatly reduced.

Drawings

Fig. 1 is a view showing a usage state of the multi-channel drug pump.

Fig. 2 is a view of a second mode of use of the multi-channel drug pump.

Fig. 3 is a view of a third mode of use of the multi-channel drug delivery pump.

Fig. 4 is a view of a state of use of the multi-channel drug delivery pump.

Fig. 5 is a view showing a usage state of the multi-channel drug pump.

Fig. 6 is a view of a six-point view of a multi-channel drug pump in use.

Fig. 7 is a schematic structural view of the elastic connection member.

Fig. 8 is a schematic structural view of the elastic seal.

Fig. 9 is a schematic structural view of a multi-channel drug delivery pump according to an embodiment.

Fig. 10 is a schematic diagram of a multi-channel drug pump according to a second embodiment.

Description of main reference numerals: 1-upper shell, 2-lower shell, 3-first pipeline, 4-water inlet pipeline, 5-water outlet channel, 6-movable valve body, 7-medicine adding structure, 61-piston, 62-movable sealing structure, 11-upper cavity, 12-lower cavity, 611-first through hole, 612-second through hole, 621-transmission rod, 622-elastic connecting piece, 623-fixing piece, 624-first sealing piece, 625-second sealing piece, 6221-sleeve, 6222-telescopic rod, 6223-first spring, 71-proportion adjusting tube, 72-elastic sealing piece, 63-drawing rod, 64-sealing ring, 65-third through hole, 66-hole cover, 721-second spring, 722-sealing cover, 723-fixed block, 711-second pipeline, 712-adjusting shell, 713-third pipeline, 8-exhaust valve, 9-first connecting pipeline, 91-first check valve, 92-first switch, 73-second switch, 74-first partition, 10-second connecting pipeline, 101-second check valve, 102-third switch, 103-fourth switch, 104-second partition.

Detailed Description

The utility model provides a multichannel dosing pump, which is used for making the purposes, technical schemes and effects of the utility model clearer and more definite, and is further described in detail below by referring to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, for convenience in describing the present utility model and simplifying the description, and do not refer to or imply that the apparatus or element referred to must have a specific orientation, as well as a specific orientation configuration and operation, and therefore, should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Referring to fig. 1, the present utility model provides a multi-channel dosing pump, comprising an upper housing 1 and a lower housing 2 in threaded connection;

a first pipeline 3 is vertically arranged in the lower shell 2, and the first pipeline 3 is communicated with a water inlet pipeline 4; a water outlet channel 5 is arranged between the pipe wall of the first pipeline 3 and the lower shell 2;

the movable valve body 6 is movably connected with the upper shell 1, and the lower part of the movable valve body 6 is inserted into the first pipeline 3 and is movably connected with the first pipeline 3;

the device also comprises a plurality of dosing structures 7, wherein the dosing structures 7 are respectively connected with the first pipelines 3; the movable valve body 6 is used for reciprocating under the action of water flow, sucking the medicine into the first pipeline 3 and discharging the medicine to the water outlet channel 5. When in use, the utility model is arranged on a waterline pipeline, water enters from a water inlet pipeline 4 and is discharged from a water outlet channel 5.

The working principle of the utility model is as follows:

when water flow enters the first pipeline 3 from the water inlet pipeline 4, at the moment, the movable valve body 6 cuts off the communication between the first pipeline 3 and the inner cavity of the upper shell 1, and enables the inner cavity of the upper shell 1 of the shell to be communicated with the water outlet channel 5, the water pressure from the water inlet pipeline 4 is larger than the water pressure of the water outlet channel 5, the movable valve body 6 is pushed to move upwards, and in the process of moving upwards the movable valve body 6, suction force is formed, and medicines in the medicine adding structure 7 are sucked into the first pipeline 3, so that the medicines are mixed with the water; at the same time, the liquid in the inner cavity of the upper shell 1 above the movable valve body 6 is extruded by the movable valve body 6 which moves upwards and is discharged to the water outlet channel 5;

when the movable valve body 6 is pushed to the highest position by water flow, the movable valve body 6 is triggered to cut off the communication between the water outlet channel 5 and the inner cavity of the upper shell 1 and enable the first pipeline 3 to be communicated with the inner cavity of the upper shell 1, at the moment, water and medicine mixed liquid enter the inner cavity of the upper shell 1 under the action of water pressure, and the movable valve body 6 is pushed to move downwards;

when the movable valve body 6 moves downwards to the lowest position, the movable valve body 6 is triggered to cut off the communication between the first pipeline 3 and the inner cavity of the upper shell 1 again, and the inner cavity of the upper shell 1 of the shell is communicated with the water outlet channel 5 (reset).

Since the space in the first pipe 3 is fixed, the volume of water is fixed, and the mixing of the same volume of water with the liquid medicine having a constant inhalation amount can be ensured each time without adjusting the medicine input amount of the medicine feeding structure 7.

The movable valve body 6 can be realized by adopting various structures, and reference can be made to proportional pump structures in patent CN106050597B, patent CN214887639U and patent CN 108223326B.

Referring to fig. 1, in one embodiment, the movable valve body 6 includes a piston 61 and a movable sealing structure 62 disposed on the piston 61;

the upper part of the piston 61 is movably connected with the upper shell 1, and the lower part of the piston 61 is inserted into the first pipeline 3 and is movably connected with the first pipeline 3;

the piston 61 divides the inner cavity of the upper shell 1 into an upper cavity 11 and a lower cavity 12, and the first pipeline 3, the upper cavity 11, the lower cavity 12 and the water outlet channel 5 are communicated in sequence; referring to figure 3 of the drawings in which, the bottom of the piston 61 is provided with at least one first through hole 611, the first through hole 611 communicates the first pipe 3 with the upper cavity 11; referring to fig. 2, at least one second through hole 612 is disposed at the top of the piston 61, and the second through hole 612 communicates with the upper cavity 11 and the lower cavity 12.

Referring to fig. 2, in one embodiment, the movable sealing structure 62 includes a transmission rod 621, an elastic connection member 622, and a fixing member 623; both ends of the elastic connecting piece 622 are respectively movably connected with the transmission rod 621 and the fixing piece 623; the fixing element 623 is fixedly connected with the piston 61; the lower part of the transmission rod 621 passes through the bottom of the piston 61, and the lower part of the transmission rod 621 is provided with at least one first sealing member 624, and the first sealing member 624 is used for closing the first through hole 611; at least one second sealing member 625 is provided at an upper portion of the driving rod 621, and the second sealing member 625 is used for closing the second through hole 612. Specifically, the first sealing member 624 is disposed below the first through hole 611, and the second sealing member 625 is disposed above the second through hole 612.

Referring to fig. 1 and 2, when the piston 61 and the movable sealing structure 62 move upward, the first sealing member 624 closes the first through hole 611, the second through hole 612 is opened, and the connection between the transmission rod 621 and the elastic connection member 622 is located above the connection between the elastic connection member 622 and the fixing member 623; when the piston 61 moves upward, the upper chamber 11 communicates with the lower chamber 12 and does not communicate with the first pipe 3, and at this time, the space of the upper chamber 11 gradually becomes smaller, the space of the lower chamber 12 gradually becomes larger, and the liquid in the upper chamber 11 is discharged into the lower chamber 12.

Referring to fig. 2, when the movable sealing structure 62 is lifted to the top position, the motion is stopped, the driving rod 621 is stationary, and the piston 61 and the fixing member 623 continue to move upwards, at this time, the driving rod 621 and the fixing member 623 move relatively, and the elastic connection member 622 is compressed;

referring to fig. 3, when the transmission rod 621 and the fixing member 623 continue to move upward, the elastic connection member 622 is switched from the compressed state to the rebound state, at this time, the connection between the transmission rod 621 and the elastic connection member 622 is located below the connection between the elastic connection member 622 and the fixing member 623, the piston 61 moves upward under the rebound action of the elastic connection member 622, and simultaneously the first through hole 611 leaves the first sealing member 624, the first through hole 611 is opened, and the second sealing member 625 is inserted into the second through hole 612, and the second through hole 612 is closed; the upper cavity 11 is in communication with the first conduit 3 and not with the lower cavity 12;

referring to fig. 4, after the upper cavity 11 is communicated with the first pipe 3, the water pressure of the upper cavity 11 is greater than the water pressure of the lower cavity 12, so that the piston 61 and the movable sealing structure 62 are driven to move downwards, the space of the lower cavity 12 is gradually reduced, water in the lower cavity is discharged, and at the same time, the space of the upper cavity 11 is gradually increased, and liquid in the first pipe 3 is sucked, and at the moment, the piston 61 and the movable sealing structure 62 continue to move downwards;

referring to fig. 5, when the movable sealing structure 62 is lowered to the bottom position, the movement is stopped, the driving rod 621 is stationary, and the piston 61 and the fixing member 623 continue to move downward, at this time, the driving rod 621 and the fixing member 623 move relatively, and the elastic connection member 622 is compressed;

referring to fig. 6, when the driving rod 621 and the fixing member 623 continue to move downward, the elastic connecting member 622 is switched from the compressed state to the rebound state, at this time, the connection between the driving rod 621 and the elastic connecting member 622 is located above the connection between the elastic connecting member 622 and the fixing member 623, the piston 61 moves downward under the rebound action of the elastic connecting member 622, and simultaneously the first sealing member 624 is inserted into the first through hole 611, the first through hole 611 is closed, and the second through hole 612 leaves the second sealing member 625, and the second through hole 612 is opened, thereby completing a cycle.

Referring to fig. 7, in one embodiment, the resilient connecting element 622 includes a sleeve 6221 and a telescoping rod 6222 inserted into the sleeve 6221, a first spring 6223 is arranged in the sleeve 6221, and the insertion end of the telescopic rod 6222 is fixedly connected with the first spring 6223; the outer ends of the sleeve 6221 and the telescopic rod 6222 are movably connected with the fixing member 623 and the transmission rod 621, respectively.

Referring to fig. 1 and 2, in one embodiment, the dosing structure 7 includes a proportional adjustment tube 71 and an elastic seal 72 disposed in the proportional adjustment tube 71; the outlet end of the proportion adjusting pipe 71 is communicated with the first pipeline 3, and the inlet end of the proportion adjusting pipe is used for being connected with a liquid medicine barrel; said elastic seal 72 is used to close the inlet of the proportional adjustment tube 71; and an extracting rod 63 arranged on the piston 61, wherein the extracting rod 63 is inserted into the proportion adjusting tube 71 and is used for extracting the liquid medicine in the proportion adjusting tube 71.

Referring to fig. 2-6, a sealing ring 64 is disposed at the bottom of the liquid suction rod 63, a third through hole 65 is disposed on the sealing ring 64, a hole cover 66 is disposed on the top surface of the sealing ring 64, and the hole cover 66 is movably connected with the sealing ring 64 and is used for covering the third through hole 65. Referring to fig. 5, when the liquid-pumping rod 63 moves downward, the hole cover 66 is flushed by the liquid under the sealing ring 64, and referring to fig. 6, when the liquid-pumping rod 63 moves upward, the hole cover 66 is pressed against the third through hole 65, and the liquid on the sealing ring 64 is discharged into the first pipe 3.

When the piston 61 moves upward, the elastic sealing member 72 is compressed upward, so that the inlet of the proportional adjustment tube 71 is opened and the liquid medicine is sucked; when the piston 61 moves downwards, the elastic seal 72 presses against the inlet of the proportional adjustment tube 71, the mixed liquid in the ratio adjusting pipe 71 cannot flow back to the liquid medicine tank from the inlet.

Referring to fig. 8, in one embodiment, the elastic seal 72 includes a second spring 721 and a sealing cover 722; a fixed block 723 is disposed in the proportional adjustment tube 71, and two ends of the second spring 721 are fixedly connected with the fixed block 723 and the sealing cover 722, respectively. The sealing cap 722 is pressed against the inlet of the proportional adjustment tube 71.

Referring to fig. 2, in one embodiment, the proportional adjustment tube 71 includes a second pipe 711 and an adjustment housing 712, and an external thread is disposed at a lower portion of an outer sidewall of the second pipe 711; the device further comprises an adjusting shell 712, wherein an inner thread is arranged at the upper part of the inner side wall of the adjusting shell 712, and the adjusting shell 712 is in threaded connection with the second pipeline 711; a third pipeline 713 is sleeved in the adjusting shell 712, the lower part of the third pipeline 713 is fixedly connected with the adjusting shell 712, and the third pipeline 713 is inserted into the second pipeline 711; the bottom of the tapping rod 63 is inserted into the third pipe 713. In particular, said elastic seal 72 is arranged inside the proportional adjustment tube 71 for closing the water inlet of the third conduit 713. By adjusting the second conduit 711 and adjusting the degree of threading of the housing 712, the distance from the bottom of the extractor 63 to the elastomeric seal 72 can be adjusted. The larger the distance from the bottom of the liquid suction rod 63 to the elastic seal 72, the larger the volume, and the larger the amount of liquid medicine to be sucked at a time.

Referring to fig. 2, in one embodiment, an exhaust valve 8 is further disposed at the top of the upper housing 1, and the exhaust valve 8 is used for exhausting air collected at the top of the upper cavity 11. If too much air collects at the top of the upper chamber 11, the flow of water is affected.

Referring to fig. 9, in one embodiment, the water outlet channel 5 is further provided with a first connecting pipe 9, and an inlet end of the first connecting pipe 9 is communicated with at least one second pipe 711; the first connecting pipeline 9 is provided with a first one-way valve 91 and a first switch 92; a first partition 74 is also provided in the second duct 711; the first partition 74 is located above the junction of the first connecting pipe 9 and the second pipe 711; the extractor rod 63 passes through the first partition 74; the first partition 74 is provided with a first water passage, and the first water passage is provided with a second switch 73. When a plurality of liquid medicines need to be added step by step, the second switch 73 can be closed to block the liquid medicines from entering the first pipeline 3 through the second pipeline 711, and the first switch 92 can be opened to enable the second pipeline 711 to be communicated with the first connecting pipeline 9, so that the liquid medicines can enter the water outlet channel 5 through the first connecting pipeline 9. Preferably, the method comprises the steps of, the first connecting pipe 9 is connected from the top of the outlet channel 5.

Referring to fig. 10, in one embodiment, the water inlet pipe 4 is further provided with a second connecting pipe 10, and an inlet end of the second connecting pipe 10 is communicated with at least one second pipe 711; the second connecting pipeline 10 is provided with a second one-way valve 101 and a third switch 102; a second partition 104 is further disposed in the second pipe 711; the second partition 104 is located above the connection between the second connecting pipe 10 and the second pipe 711; the liquid suction rod 63 passes through the second partition 104; the second partition 104 is provided with a second water passing channel, and the second water passing channel is provided with a fourth switch 103. Through the second connecting pipe 10, the liquid medicine can be directly added into the water inlet pipe 4, and the mixing process is prolonged. Preferably, the second connecting duct 10 is accessed from the top of the water intake duct 4.

In summary, according to the utility model, the plurality of dosing structures 7 are connected to the first pipeline 3, so that a plurality of medicines can be sucked into the first pipeline 3 to be mixed with water simultaneously in the repeated movement process of the movable valve body 6, and a plurality of proportional pumps are not required to be combined, so that the equipment cost is greatly reduced.

It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present utility model and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present utility model as defined in the following claims.

Claims (10)

1. A multichannel dosing pump is characterized by comprising an upper shell and a lower shell which are in threaded connection; a first pipeline is vertically arranged in the lower shell and is communicated with a water inlet pipeline; a water outlet channel is arranged between the pipe wall of the first pipeline and the lower shell;

the device also comprises a plurality of dosing structures, wherein the dosing structures are respectively connected with the first pipeline;

the movable valve body is movably connected with the upper shell, and the lower part of the movable valve body is movably connected with the first pipeline; the movable valve body is used for reciprocating under the action of water flow to suck medicines into the first pipeline.

2. The multi-channel medicated pump of claim 1, wherein the movable valve body comprises a piston and a movable seal disposed on the piston; the upper part of the piston is movably connected with the upper shell, and the lower part of the piston is inserted into the first pipeline and is movably connected with the first pipeline; the piston divides the inner cavity of the upper shell into an upper cavity and a lower cavity, and the first pipeline, the upper cavity, the lower cavity and the water outlet channel are sequentially communicated; the movable sealing structure is used for controlling the upper cavity to be communicated with the lower cavity and the first pipeline respectively.

3. The multi-channel dosing pump of claim 2, wherein the bottom of the piston is provided with at least one first through hole, the first through hole communicating a first conduit with an upper cavity; the top of piston is provided with at least one second through-hole, second through-hole intercommunication cavity and lower cavity, movable seal structure is used for controlling the switching of first through-hole and second through-hole.

4. A multi-channel medicated pump as claimed in claim 3, wherein the movable seal comprises a drive rod, an elastic connector and a retainer; two ends of the elastic connecting piece are respectively and movably connected with the transmission rod and the fixing piece; the fixing piece is fixedly connected with the piston; the lower part of the transmission rod passes through the bottom of the piston, and is provided with at least one first sealing piece which is used for sealing the first through hole; the upper part of the transmission rod is provided with at least one second sealing piece, and the second sealing piece is used for closing the second through hole.

5. The multi-channel medicated pump of claim 4, wherein the elastic connector comprises a sleeve and a telescoping rod inserted into the sleeve, a first spring is disposed in the sleeve, and an insertion end of the telescoping rod is fixedly connected with the first spring; the outer side ends of the sleeve and the telescopic rod are respectively and movably connected with the fixing piece and the transmission rod.

6. The multi-channel dosing pump of claim 4, wherein the dosing structure comprises a proportional adjustment tube and an elastomeric seal disposed within the proportional adjustment tube; the outlet end of the proportion regulating pipe is communicated with the first pipeline, and the inlet end of the proportion regulating pipe is used for being connected with the liquid medicine barrel; the elastic sealing piece is used for sealing the inlet of the proportion adjusting pipe; the liquid suction rod is arranged on the piston, inserted into the proportion adjusting pipe and used for sucking out the liquid medicine in the proportion adjusting pipe.

7. The multi-channel dosing pump of claim 6, wherein a sealing ring is arranged at the bottom of the liquid suction rod, a plurality of third through holes are formed in the sealing ring, a plurality of hole covers are arranged on the top surface of the sealing ring, and the hole covers are movably connected with the sealing ring and are used for covering the third through holes.

8. The multi-channel medicated pump of claim 6, wherein, the elastic sealing piece comprises a second spring and a sealing cover; a fixed block is arranged in the proportion adjusting pipe, and two ends of the second spring are fixedly connected with the fixed block and the sealing cover respectively; the sealing cover is abutted with the bottom of the inner side wall of the proportion adjusting pipe and used for sealing an inlet of the proportion adjusting pipe.

9. The multi-channel dosing pump of claim 7, wherein the proportional adjustment tube comprises a second tube and an adjustment housing, an upper portion of an outer sidewall of the second tube being provided with external threads; the lower part of the inner side wall of the adjusting shell is provided with an internal thread, the adjusting shell is in threaded connection with the second pipeline; a third pipeline is sleeved in the adjusting shell, the lower part of the third pipeline is fixedly connected with the adjusting shell, and the third pipeline is inserted into the second pipeline; the lower part of the liquid suction rod is inserted into the third pipeline.

10. The multi-channel dosing pump of claim 9, wherein a first connecting channel is further provided on the outlet channel, and an inlet end of the first connecting channel is in communication with at least one second channel; the first connecting pipeline is provided with a first one-way valve and a first switch; a first partition is arranged in the second pipeline; the first partition is positioned above the joint of the first connecting pipeline and the second pipeline; the liquid suction rod penetrates through the first partition; the first partition is provided with a first water passing channel, and the first water passing channel is provided with a second switch.

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