Liquid mixing pump and working method thereof

Abstract

The present invention relates to a liquid mixing pump and a working method thereof: the pump comprises a pump body, an input port and an output port are arranged on the pump body, a liquid mixer is installed at the input port in the pump body, an impeller guide vane device is arranged in the pump body, the input end of the liquid mixer is connected with the input port, the output end of the liquid mixer is connected with the input end of the impeller guide vane device, the output end of the impeller guide vane device is connected with the output port, the liquid mixer comprises a mixer body, at least one small-volume liquid agent tube is arranged on the side of the mixer body, a small-volume liquid agent tube outlet is arranged at one end of the small-volume liquid agent tube, and the small-volume liquid agent tube outlet penetrates into the mixer body. The present invention has reasonable design, uniform liquid mixing, high mixing efficiency and fast conveying speed, and the liquid outputted by the mixing pump can directly enter the production line without stirring and mixing, thereby facilitating specialized production and improving labor production efficiency.

Description

Technical Field

[0001] The invention relates to a liquid mixing pump and a working method thereof. Background Art

[0002] At present, in the production of mixed dosage enterprises, the mixed delivery method often used is: first transfer a variety of drugs to the mixer, then stir and mix them, and then output them through pipelines. This process requires multiple stations and steps, which is time-consuming and labor-intensive, and has a large number of equipment and occupies a large area overall. Summary of the invention

[0003] The present invention provides a liquid mixing pump and a working method thereof, which solves the problem that when batch dispensing of pharmaceutical agents is carried out, multiple devices need to be coordinated for conveying and mixing, and the steps are complicated and the equipment volume is large.

[0004] The solution adopted by the present invention to solve the technical problem is a liquid mixing pump: comprising a pump body, the pump body is provided with an input port and an output port, a liquid mixer is installed at the input port in the pump body, an impeller guide vane device is provided in the pump body, the input end of the liquid mixer is connected to the input port, the output end of the liquid mixer is connected to the input end of the impeller guide vane device, and the output end of the impeller guide vane device is connected to the output port.

[0005] Furthermore, the liquid mixer comprises a mixer body, one end of which is provided with a large-volume liquid inlet, and the other end of which is provided with a mixer outlet, which is screwed to the input end of the impeller guide vane device.

[0006] Furthermore, at least one small liquid volume tube is arranged on the side of the mixer body, a small liquid volume inlet is arranged at one end of the small liquid volume tube, and a small liquid volume tube outlet is arranged at the other end of the small liquid volume tube. The small liquid volume tube outlet penetrates into the mixer body, and the small liquid volume tube outlet faces the water flow direction in the mixer body. The diameter of the tube mouth of the small liquid volume tube outlet gradually decreases along the pipeline direction to form a funnel shape.

[0007] Furthermore, the input port includes a large-volume liquid input port and at least one small-volume liquid input port, and the large-volume liquid input port and the small-volume liquid input port are both connected to the interior of the pump body. The large-volume liquid inlet on the mixer body is screwed to the inner end of the pump body of the large-volume liquid input port, and the small-volume liquid inlet on the small-volume liquid tube is screwed to the inner end of the pump body of the small-volume liquid input port.

[0008] Furthermore, a pump cover is installed on the side of the pump body away from the liquid mixer, and a fixing seat for fixing the impeller guide vane device is provided on the end face of the pump cover inside the pump body, a liquid cavity is provided on the end face of the fixing seat, a liquid cavity outlet is provided on the side of the liquid cavity, and the output end of the impeller guide vane device is connected to the liquid cavity.

[0009] Furthermore, the impeller guide vane device includes a plurality of impellers and guide vanes arranged in sequence and staggered along the direction of water travel, a front cover and a rear cover are arranged at both ends of the impeller guide vane device along the direction of water travel, the front cover and the rear cover are both screwed on the fixing seat, the impeller and the guide vanes are both installed in the cavity surrounded by the front cover and the rear cover, an impeller guide vane device input port is arranged on the end face of the front cover, the impeller guide vane device input port is screwed to the mixer outlet, an impeller guide vane device output port is arranged on the end face of the rear cover, and the impeller guide vane device output port is connected to the liquid chamber.

[0010] Furthermore, a working chamber is provided inside the pump body, the liquid mixer and the impeller guide vane device are both installed in the working chamber, the liquid chamber outlet on the fixed seat is connected to the working chamber, and the output port of the pump body is connected to the working chamber.

[0011] Furthermore, the impeller guide vane device is driven by a motor, and the shaft of the motor passes through the fixed seat and the rear cover and extends into the impeller guide vane device. The impeller is mounted on the shaft of the motor and is driven by the motor shaft. The guide vane is sleeved on the shaft of the motor, and the guide vane is not driven by the motor shaft. The side of the guide vane is screwed to the inner wall of the cavity surrounded by the front cover and the rear cover.

[0012] A working method of a liquid mixing pump:

[0013] Step 1) Different liquids to be mixed are introduced into the large-volume liquid input port and the small-volume liquid input port respectively, and then the motor is started to drive the impeller to rotate;

[0014] Step 2) different liquids to be mixed enter the mixer body through the large-volume liquid inlet and the small-volume liquid tube on the mixer body for preliminary mixing;

[0015] Step 3) The preliminarily mixed liquid is input into the impeller guide vane rotating device through the mixer body, and stirred by the impeller to perform deep mixing;

[0016] Step 4) The deeply mixed liquid passes through the liquid chamber and the working chamber in sequence, and then is output from the output port of the stupid body to other locations, and the mixing is completed.

[0017] Compared with the prior art, the present invention has the following beneficial effects: reasonable design, uniform liquid mixing, high mixing efficiency, fast conveying speed, the liquid output by the mixing pump can directly enter the production line without stirring and mixing, convenient specialized production, and improved labor productivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 A schematic diagram of the structure of the present invention;

[0020] Figure 2 Schematic diagram of pump structure;

[0021] Figure 3 Schematic diagram of liquid mixer structure;

[0022] Figure 4 The structure of the impeller is shown in the front view;

[0023] Figure 5 The schematic top view of the impeller structure;

[0024] Figure 6 Schematic diagram of the construction of the star-shaped plate;

[0025] Figure 7 The structure of the guide vane is schematically shown in the front view;

[0026] Figure 8 A schematic bottom view of the guide vane structure;

[0027] Fig. 9 for Figure 8 Middle AA section view.

[0028] In the figure: 1-inlet for small-volume liquid agent; 2-inlet for small-volume liquid agent; 3-pipe for small-volume liquid agent; 4-inlet for large-volume liquid agent; 5-inlet for large-volume liquid agent; 6-outlet for small-volume liquid agent pipe; 7-liquid mixer; 8-watering screw plug; 9-front cover; 10-impeller; 101-wheel core sleeve; 102-functional blade; 11-outlet; 12-guide vane; 121-stage sleeve; 122-inflow plate; 123 -guide vane; 13-second-stage impeller; 14-pump body; 15-rear cover; 16-seal; 17-drain plug; 18-pump cover; 19-motor; 20-mixer outlet; 21-fixed seat; 22-liquid chamber; 23-liquid chamber outlet; 24-star plate; 241-groove; 25-inlet plate; 251-guide sleeve; 26-guide plate; 261-guide channel; 262-through hole. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] like Figure 1-3As shown, a liquid mixing pump comprises a pump body 14, the pump body is provided with an input port 1 and an output port 11, a liquid mixer 7 is installed at the input port in the pump body, an impeller guide vane device is provided in the pump body, the impeller guide vane device is driven by an external motor 19, the input end of the liquid mixer is connected to the input port, the output end of the liquid mixer is connected to the input end of the impeller guide vane device, and the output end of the impeller guide vane device is connected to the output port; the liquid to be mixed enters the mixer for preliminary mixing, and then is entered into the impeller guide vane device for deep mixing, and after deep mixing, it can be output to the production line for packaging, without stirring and mixing, with high mixing efficiency and fast conveying speed.

[0031] In this embodiment, the liquid mixer includes a mixer body, a large-volume liquid inlet 5 is provided at one end of the mixer body, a mixer outlet 20 is provided at the other end of the mixer body, and the mixer outlet is screwed to the input end of the impeller guide vane device; a mixer inner cavity with a size larger than the large-volume liquid inlet and the mixer outlet is provided in the middle of the liquid mixer, and the large-volume liquid inlet and the mixer outlet are both connected to the mixer inner cavity.

[0032] In this embodiment, at least one small liquid volume tube 3 is arranged on the side of the mixer body, a small liquid volume inlet 2 is arranged at one end of the small liquid volume tube, and a small liquid volume tube outlet 6 is arranged at the other end of the small liquid volume tube. The small liquid volume tube outlet penetrates into the mixer body, that is, penetrates into the inner cavity of the mixer, and the small liquid volume tube outlet faces the direction of water flow in the mixer body. The diameter of the small liquid volume tube outlet gradually decreases along the pipeline direction and is funnel-shaped. The outlet of the small liquid volume tube is located in the middle of the mixer body.

[0033] In this embodiment, the input port includes a large-volume liquid input port 4 and at least one small-volume liquid input port 1. The large-volume liquid input port and the small-volume liquid input port are both connected to the inside of the pump body. The large-volume liquid inlet on the mixer body is screwed to the inner end of the pump body of the large-volume liquid input port, and the small-volume liquid inlet on the small-volume liquid tube is screwed to the inner end of the pump body of the small-volume liquid input port.

[0034] When in use, different liquids to be mixed are respectively introduced into the large-volume liquid input port and the small-volume liquid input port, and the small-volume liquid is ejected from the small-volume liquid input port into the mixer body. On the one hand, the funnel-shaped small-volume liquid tube outlet accelerates the entry of the liquid into the impeller guide vane device, and on the other hand, since the mouth of the small-volume liquid tube outlet is located in the middle of the mixer body, the output small-volume liquid is ejected in the middle of the overall large-volume liquid. Because it is ejected in the middle of the large-volume liquid instead of from the side of the large-volume liquid, the small-volume liquid can better diffuse outward from the middle of the large-volume liquid to accelerate the mixing.

[0035] In this embodiment, a pump cover 18 is installed on the side of the pump body away from the liquid mixer. The pump cover is provided with a fixing seat 21 for fixing the impeller guide vane device on the end face inside the pump body, a liquid chamber 22 is provided on the end face of the fixing seat, a liquid chamber outlet 23 is provided on the side of the liquid chamber, and the output end of the impeller guide vane device is connected to the liquid chamber.

[0036] In this embodiment, the impeller guide vane device includes a plurality of impellers 10 and guide vanes 12 arranged in sequence and staggered along the direction of water travel. Through the cooperation of the impeller and the guide vane, the preliminarily mixed liquid is further mixed; the impeller guide vane device is provided with a front cover 9 and a rear cover 15 at both ends along the direction of water travel, and the front cover and the rear cover are both screwed on the fixing seat, and the impeller and the guide vane are both installed in the cavity surrounded by the front cover and the rear cover, and the impeller guide vane device input port is provided on the end surface of the front cover, and the impeller guide vane device input port is screwed to the mixer outlet, and the impeller guide vane device output port is provided on the end surface of the rear cover, and the impeller guide vane device output port is communicated with the liquid chamber;

[0037] The above-mentioned impeller and guide vane are both prior art. The impeller includes a wheel center sleeve 101 connected to the rotating shaft key of the motor. An inlet plate 25 and a star plate 24 are sequentially arranged on the side wall of the wheel center sleeve along the direction of water travel. A number of arc-shaped functional leaves 102 with the same orientation are evenly distributed between the inlet plate and the star plate. The inlet plate includes a guide sleeve 251 whose inner diameter is larger than the outer diameter of the wheel center sleeve. A V-shaped annular plate with a lower inner side and a higher outer side is arranged on the top of the outer side wall of the guide sleeve. The inlet plate and the star plate have the same outer diameter. A number of grooves 241 are evenly distributed on the circumference of the star plate. The number of the functional leaves is equal to the number of the grooves. The functional leaves are composed of The two arc plates are connected tangentially, and the radius of the inner arc plate is smaller than the inner diameter of the outer arc plate. This shape design is conducive to reducing water flow resistance, improving supercharging efficiency, and thus accelerating the transmission of liquid; the inner end of the functional leaf is adjacent to the guide sleeve, and its outer end is flush with the outer end wall of the inlet plate. The side wall of the star-shaped plate groove adjacent to the functional leaf is an arc side wall, and the arc side wall and the arc plate located on the outer side are concentric arc segments. These arc designs are conducive to reducing water flow resistance, so that water flows from the guide sleeve and is accelerated by the functional leaf and then thrown out from the star-shaped plate groove. After passing through multiple impellers and driven by the motor, the liquid is quickly stirred to achieve uniform mixing of the medicine;

[0038] The guide vane includes a cylindrical step sleeve 121, in which a guide plate 26 and an inlet plate 122 with the same inner diameter as the step sleeve are sequentially arranged along the direction of water travel, and a plurality of arc-shaped guide vanes 123 with the same direction are arranged between the guide plate and the inlet plate. A central hole for the shaft to pass through is arranged in the middle of the guide plate, and a plurality of through holes 262 surrounding the central hole are evenly distributed around the guide plate. A guide channel 261 arranged radially is arranged at the rear end of the through hole, and the top of the guide channel rises sequentially along the direction of water travel, and the guide plate is low outside and high inside. The guide vane is in the shape of a high annular slope, the through hole is arranged near the outer end of the inner wall of the guide vane, the inner wall of the guide channel and the outer wall of the adjacent guide vane are concentric arc segments, this structural design is beneficial for water to flow upward, and is conducive to water to flow from the outside to the middle, the inlet plate is in the shape of a funnel with a high outside and a low inside, and a circular hole with an inner diameter greater than the rotating shaft is arranged in the middle, the inner diameter of the circular hole is equal to the outer diameter of the guide sleeve, the outer end of the guide vane is flush with the outer side of the guide vane, and the inner end is flush with the inner side of the inlet plate, so that water enters from the guide channel through the through hole and is guided by the guide vane and then flows out from the circular hole of the inlet plate;

[0039] The liquid is stirred by the impeller and then gathered into the next level impeller through the guide vane. This multiple stirring and mixing can achieve the purpose of evenly mixing the liquid.

[0040] The outer edge of the right end portion of the rear cover abuts against the fixing seat, the outer edge of the right end portion of the front cover abuts against the end of the leftmost step sleeve, the ends of adjacent step sleeves abut against each other, and the end of the rightmost step sleeve abuts against the left outer edge of the rear cover, and the front cover and the rear cover are fixedly connected by bolts, and then the rear cover is screwed to the pump cover, or the front cover and the rear cover are directly screwed to the pump cover; when it is necessary to increase or reduce the impeller and guide vane, it is only necessary to replace the locking bolts between the front cover and the rear cover or the locking bolts between the front cover and the pump cover.

[0041] In this embodiment, a working chamber is provided inside the pump body, the liquid mixer and the impeller guide vane device are both installed in the working chamber, the liquid chamber outlet on the fixed seat is connected to the working chamber, and the output port of the pump body is connected to the working chamber; a water filling screw plug 8 and a drain screw plug 17 are provided on the pump body;

[0042] In this embodiment, the impeller guide vane device is driven by a motor, the rotating shaft of the motor passes through the fixing seat and the rear cover and extends into the impeller guide vane device, the impeller is mounted on the rotating shaft of the motor and driven by the rotating shaft of the motor, the guide vane is sleeved on the rotating shaft of the motor, and the guide vane is not driven by the rotating shaft of the motor, and the side of the guide vane is screwed to the inner wall of the cavity surrounded by the front cover and the rear cover;

[0043] A seal 16 is provided between the pump cover and the shaft of the motor to prevent water in the pump body from being thrown out along the shaft. Facing the high-speed rotating shaft, once the seal is damaged, the vacuum state cannot be maintained in the pump body, making the water pump unable to work normally.

[0044] A working method of a liquid mixing pump:

[0045] Step 1) Different liquids to be mixed are introduced into the large-volume liquid input port and the small-volume liquid input port respectively, and then the motor is started to drive the impeller to rotate;

[0046] Step 2) different liquids to be mixed enter the mixer body through the large-volume liquid inlet and the small-volume liquid tube on the mixer body for preliminary mixing;

[0047] Step 3) The preliminarily mixed liquid is input into the impeller guide vane rotating device through the mixer body, and stirred by the impeller to perform deep mixing;

[0048] Step 4) The deeply mixed liquid passes through the liquid chamber and the working chamber in sequence, and then is output from the output port of the stupid body to other locations, and the mixing is completed.

[0049] Unless otherwise stated, any technical solution disclosed in the present invention disclosed above, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range, and any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many implementable numerical values. Since there are too many numerical values ​​to be exhaustive, the present invention discloses some numerical values ​​to illustrate the technical solution of the present invention, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the present invention.

[0050] If the words "first", "second" and so on are used in this article to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of description to distinguish the components. Unless otherwise stated, the above words have no special meaning.

[0051] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by integrated molding using a casting process) (except when it is obviously impossible to use an integrated molding process).

[0052] In addition, the orientations or positional relationships indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" used in any of the technical solutions disclosed in the above-mentioned invention are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent. Unless otherwise stated, the terms used to indicate shapes used in any of the technical solutions disclosed in the above-mentioned invention include shapes that are approximate, similar, or close to them.

[0053] Any component provided by the present invention may be assembled from a plurality of separate components, or may be a separate component manufactured by an integral forming process.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A liquid mixing pump, characterized in that: The pump body comprises a pump body, wherein an input port and an output port are arranged on the pump body, a liquid mixer is installed at the input port of the pump body, an impeller guide vane device is arranged in the pump body, an input end of the liquid mixer is connected to the input port, an output end of the liquid mixer is connected to an input end of the impeller guide vane device, and an output end of the impeller guide vane device is connected to the output port; The liquid mixer comprises a mixer body, one end of which is provided with a large-volume liquid inlet, and the other end of which is provided with a mixer outlet, which is screwed to the input end of the impeller guide vane device; At least one liquid agent tube with a small volume ratio is arranged on the side of the mixer body, a liquid agent inlet is arranged at one end of the liquid agent tube, a liquid agent outlet is arranged at the other end of the liquid agent tube, the liquid agent outlet penetrates into the mixer body, the liquid agent outlet faces the water flow direction in the mixer body, the diameter of the outlet of the liquid agent tube gradually decreases along the pipeline direction to form a funnel shape, and the outlet of the liquid agent tube is located in the middle of the mixer body; The input port includes a large-volume liquid input port and at least one small-volume liquid input port. The large-volume liquid input port and the small-volume liquid input port are both connected to the interior of the pump body. The large-volume liquid inlet on the mixer body is screwed to the inner end of the pump body of the large-volume liquid input port, and the small-volume liquid inlet on the small-volume liquid tube is screwed to the inner end of the pump body of the small-volume liquid input port.

2. The liquid mixing pump according to claim 1, characterized in that: A pump cover is installed on the side of the pump body away from the liquid mixer. The pump cover is provided with a fixing seat for fixing the impeller guide vane device on the end face inside the pump body. A liquid cavity is provided on the end face of the fixing seat. A liquid cavity outlet is provided on the side of the liquid cavity. The output end of the impeller guide vane device is connected to the liquid cavity.

3. The liquid mixing pump according to claim 2, characterized in that: The impeller guide vane device comprises a plurality of impellers and guide vanes which are arranged in sequence and staggered along the direction of water travel; a front cover and a rear cover are arranged at both ends of the impeller guide vane device along the direction of water travel; the front cover and the rear cover are both screwed on a fixing seat; the impeller and the guide vanes are both installed in a cavity surrounded by the front cover and the rear cover; an impeller guide vane device input port is arranged on the end surface of the front cover; the impeller guide vane device input port is screwed to the mixer outlet; an impeller guide vane device output port is arranged on the end surface of the rear cover; the impeller guide vane device output port is communicated with the liquid chamber.

4. The liquid mixing pump according to claim 3, characterized in that: A working chamber is arranged inside the pump body, a liquid mixer and an impeller guide vane device are both installed in the working chamber, a liquid chamber outlet on the fixed seat is connected to the working chamber, and an output port of the pump body is connected to the working chamber.

5. The liquid mixing pump according to claim 4, characterized in that: The impeller guide vane device is driven by a motor, and the rotating shaft of the motor passes through the fixing seat and the rear cover and extends into the impeller guide vane device. The impeller is mounted on the rotating shaft of the motor and is driven by the rotating shaft of the motor. The guide vane is sleeved on the rotating shaft of the motor, and the guide vane is not driven by the rotating shaft of the motor. The side of the guide vane is screwed to the inner wall of the cavity surrounded by the front cover and the rear cover.

6. A method for operating a liquid mixing pump, using the liquid mixing pump as claimed in claim 5, characterized in that: Step 1) Different liquids to be mixed are introduced into the large-volume liquid input port and the small-volume liquid input port respectively, and then the motor is started to drive the impeller to rotate; Step 2) different liquids to be mixed enter the mixer body through the large-volume liquid inlet and the small-volume liquid tube on the mixer body for preliminary mixing; Step 3) The preliminarily mixed liquid is input into the impeller guide vane rotating device through the mixer body, and stirred by the impeller to perform deep mixing; Step 4) The deeply mixed liquid passes through the liquid chamber and the working chamber in sequence, and is then output from the output port of the pump body to other locations, and the mixing is completed.

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