A metering pump capable of reducing impurity accumulation and a method of using the same

Abstract

The present invention relates to the technical field of metering pumps. The present invention discloses a metering pump capable of reducing the accumulation of impurities and a method of using the same, wherein a liquid outlet and a liquid inlet are respectively provided at the upper and lower ends of one side of the metering pump body, and a filter box device is provided at the liquid inlet at the bottom of the metering pump body, and the filter box device comprises an upper cover, a lower cover, a quick connection assembly and a control assembly, wherein the top of the upper cover is threadedly connected to the liquid inlet at the bottom of the metering pump body, and the quick connection assembly is provided with two, and the two sides of the top of the lower cover are detachably connected to the bottom of the upper cover through a quick connection assembly, and a control assembly is provided at the side end of each quick connection assembly, and a sealing gasket is provided at the butt surface of the upper cover and the lower cover; the device realizes the effect of reducing the accumulation of impurities inside the medicine to affect the quality of the medicine while ensuring that the impurities in the medicine are filtered and intercepted as much as possible while accurately delivering or conveying the medicine through the metering pump.

Description

Technical Field

[0001] The invention relates to the technical field of metering pumps, and in particular to a metering pump capable of reducing impurity accumulation and a use method thereof. Background Art

[0002] Metering pumps are also called quantitative pumps or proportional pumps. Metering pumps are special positive displacement pumps that can meet the needs of various strict process flows. The flow rate can be adjusted steplessly within the range of 0-100% and is used to transport liquids (especially corrosive liquids). Metering pumps are a type of fluid conveying machinery, and their outstanding feature is that they can maintain a constant flow rate that is independent of the discharge pressure. The use of metering pumps can simultaneously complete the functions of conveying, metering and regulation, thereby simplifying the production process. Using multiple metering pumps, several media can be input into the process flow in accurate proportions for mixing. Due to its own prominence, metering pumps have now been widely used in various industrial fields such as petrochemicals, pharmaceuticals, and food;

[0003] When using a traditional metering pump to accurately measure and deliver medical liquid medicine, in order to ensure the quality of the liquid medicine, a filter chamber for filtering the liquid medicine is installed at the liquid inlet at the lower end of the metering pump. The liquid medicine is filtered through the filter chamber and enters the metering pump to achieve accurate quantitative delivery or delivery, and the impurities in the liquid medicine will be filtered inside the filter chamber. With the long-term use of the metering pump, the impurities inside the filter chamber are increasing, and each delivery of the liquid medicine will pass through the filter chamber, which will inevitably affect the quality of the liquid medicine. There is a lack of equipment that can accurately deliver or deliver the liquid medicine through a metering pump while ensuring that the impurities in the liquid medicine are filtered and intercepted as much as possible, thereby reducing the accumulation of impurities inside the liquid medicine to affect the quality of the liquid medicine. Summary of the invention

[0004] The object of the present invention is to provide a metering pump and a method of use that can reduce the accumulation of impurities, so as to solve the problems raised in the above-mentioned background technology. In order to achieve the above-mentioned object, the present invention provides the following technical solutions: including a metering pump body, the metering pump body is arranged on a horizontal plane, the upper and lower ends of one side of the metering pump body are respectively provided with a liquid outlet and a liquid inlet, a filter box device is provided at the liquid inlet at the bottom of the metering pump body, the filter box device includes an upper cover, a lower cover, a quick connection assembly and a control assembly, the top of the upper cover is threadedly connected to the liquid inlet at the bottom of the metering pump body, the quick connection assembly is provided with two, the two sides of the top of the lower cover are respectively detachably connected to the bottom of the upper cover by a quick connection assembly, and a control assembly is provided at the side end of each quick connection assembly, the butt surface of the upper cover and the lower cover is provided with a sealing gasket, and the corresponding positions of the middle of the lower cover and the upper cover are provided with A water inlet and a water outlet are set through, a filter ball is placed at the upper end of the lower cover, a cavity for accommodating the filter ball is set inside the upper and lower covers, the filter ball is provided with a plurality of through holes for the medicine to pass through, the outer side of the filter ball is covered with a filter net, the filter net is provided with a plurality of filter holes for the medicine to pass through and intercept impurities, and the filter holes on the filter net correspond to the positions of the through holes on the filter ball one by one, two driving filter assemblies are symmetrically arranged on both sides of the filter net, an impurity scraper is provided at the upper end of the upper cover, the impurity scraper is fitted with the upper surface of the filter net, two impurity adsorption and collection devices are symmetrically arranged at both ends of the impurity filter, and the two impurity adsorption and collection devices are respectively connected to the two driving filter assemblies.

[0005] Preferably, the quick connection assembly includes a connecting piece, a mounting piece, a spring and a locking piece, one side of the top of the lower cover is provided with an inwardly recessed mounting groove, the mounting piece is arranged inside the mounting groove on the lower cover, and a recessed portion is provided in the middle part of the top of the mounting piece, and two locking pieces are provided, and the two locking pieces are symmetrically arranged above the mounting piece, the bottom ends of the sides on which the two locking pieces are close to each other are staggered and coaxially rotatably connected with the side ends of the recessed portions on the mounting piece, the two locking pieces are horizontally arranged on the sides away from each other, a spring is vertically arranged at the bottom of one side of each locking piece and on one side of the top of the mounting frame, the sides on which the two locking pieces are close to each other are recessed and the tops of the two locking pieces do not contact each other, the connecting piece is arranged on one side of the bottom of the upper cover, and a protrusion is provided in the middle part of the bottom of the connecting piece, the protrusion corresponds to the middle position of the two locking pieces and the shape of the protrusion matches the shape of the recess between the two locking pieces.

[0006] Preferably, the control assembly includes a first control panel and a second control panel, the first control panel and the second control panel are respectively arranged at the side ends of the two locking members and one end of the first control panel and the second control panel are located on the outside of the lower cover, the side end of the lower cover is provided with an opening for facilitating the first control panel and the second control panel to pass through and move, and adjacent ends of the first control panel and the second control panel are hinged to each other.

[0007] Preferably, the driving filter assembly includes a first rotating shaft, a clamping block and rotating blades, two first rotating shafts are provided, and the two first rotating shafts are symmetrically arranged at the axis centers at both ends of the filter net, two rotating blades are provided, and the two rotating blades are symmetrically arranged on the first rotating shafts on both sides of the filter net, two clamping blocks are provided, and the two clamping blocks are symmetrically arranged on the two first rotating shafts, and the bottom of the upper cover is provided with grooves for accommodating the rotating blades, the first rotating shaft and limiting the clamping blocks.

[0008] Preferably, the impurity scraper is arranged in an arc shape and matches the shape of the upper surface of the filter screen, the bottom of the impurity scraper is arranged open and through holes are provided at both ends of the impurity scraper.

[0009] Preferably, the impurity adsorption and collection device includes a linkage component and an adsorption component, the linkage component is arranged on one side of the upper cover, the adsorption component is arranged on the side end of the linkage component, the linkage component includes a second rotating shaft, a mounting plate, a pulley, a transmission belt and a third rotating shaft, the second rotating shaft horizontally passes through the side end of the upper cover and is rotatably connected thereto, one end of the second rotating shaft is located in the groove at the bottom of the upper cover, the end of the second rotating shaft is provided with a recessed portion, the end of the first rotating shaft close to the second rotating shaft is provided with a raised portion that fits with the recessed portion of the second rotating shaft, the ends of the second rotating shaft and the first rotating shaft are plugged into each other through the recessed portion and the raised portion, the mounting plate is arranged on the side end of the upper cover and is located at the lower part of the second rotating shaft, the third rotating shaft is arranged directly below the second rotating shaft and one end of the third rotating shaft is rotatably connected to the lower part of the mounting plate, two pulleys are provided, the two pulleys are arranged at the ends of the second rotating shaft and the third rotating shaft, and the transmission belt is sleeved on the two pulleys.

[0010] Preferably, the adsorption assembly includes a connecting rod, a driving gear, a gear ring, a connecting rod, a piston rod, a piston cylinder and a collection box, one end of the connecting rod is connected to one end of the third rotating shaft, the driving gear is rotatably arranged on the other end of the connecting rod, the gear ring is arranged on the outside of the driving gear and the axis of the gear ring corresponds to the axis position of the third rotating shaft, the driving gear is meshed with teeth on the inner side of the gear ring, the piston cylinder is arranged at the side end of the upper cover, one end of the piston cylinder is vertically arranged above the gear ring, and the other end of the piston cylinder horizontally passes through the upper cover The side end of the cover is connected with the side end of the impurity scraper, and a one-way valve is provided at the connection between the piston cylinder and the impurity scraper, and a filter screen is provided at the connection between the impurity scraper and the piston cylinder, through which the medicine cannot pass but impurities can pass. One end of the connecting rod is coaxially connected to the driving gear, and the other end of the connecting rod is rotatably connected to one end of the piston rod. The other end of the piston rod vertically passes through the bottom of the piston cylinder and is slidably connected thereto up and down. A one-way valve is provided on the top of the piston cylinder, and a collecting box is detachably provided on the side end of the upper cover, and the bottom of the collecting box is connected to the top of the one-way valve.

[0011] Preferably, the method for using the metering pump capable of reducing impurity accumulation comprises the following steps:

[0012] S1: When the device is in use, firstly, the upper cover and the lower cover are quickly assembled through the quick connection assembly, and at this time, the filter ball, the filter screen and the drive filter assembly are synchronously installed in the interior of the upper cover and the lower cover, and the drive filter assembly and the impurity adsorption and collection device are connected to each other, and the upper surface of the filter screen is in contact with the lower end of the impurity scraper, and then a hose is connected at the water inlet at the bottom of the lower cover and the water pump for conveying the liquid medicine, and a hose is connected at the liquid outlet at the top of the metering pump body and the area where the liquid medicine needs to be put in, so as to facilitate the delivery and precise quantitative delivery of the liquid medicine;

[0013] S2: Start the water pump and the metering pump body, so that the liquid medicine passes through the filter ball and the filter net inside the lower cover and the upper cover through the hose to enter the metering pump body. When the liquid medicine passes through the filter ball, the filter ball and the filter net are driven to rotate under the transmission of the filter assembly, so that the liquid medicine is filtered more comprehensively, and impurities are prevented from accumulating in a fixed area on the filter net. The filtered liquid medicine enters the metering pump body, and the liquid medicine is accurately and quantitatively delivered through the hose at the liquid outlet of the metering pump body;

[0014] S3: As the filter screen and the filter ball rotate, the impurities accumulated in the filter holes on the surface of the filter screen are continuously removed by the impurity scraper through contact with the impurity scraper and accumulated on the inner side of the impurity scraper. As the filter ball rotates, the impurity adsorption and collection device is driven to extract the impurities accumulated inside the impurity scraper to the outside of the upper cover to complete the collection, thereby preventing the impurities from accumulating inside the upper cover and contaminating the liquid medicine.

[0015] S4: When the filter screen and the filter ball need to be rinsed, cleaned or replaced, the connection between the upper cover and the lower cover is released through the control component, so that the filter screen and the filter ball can be smoothly taken out from the upper cover and the lower cover for cleaning or replacement.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present invention, in order to facilitate the removal, cleaning or replacement of the filter balls and the filter screen, the upper cover and the lower cover are set to a detachable design. When the upper cover and the lower cover need to be quickly connected together, the connecting piece at the bottom of the upper cover is placed between the two locking pieces at the top of the lower cover and pressed downward, so that the connecting piece is squeezed between the two locking pieces. The locking pieces are squeezed, and the two locking pieces are deflected in the direction away from each other, and then quickly reset under the action of the spring, so that the connecting piece is locked between the two locking pieces, thereby realizing the quick connection and fixation of the upper cover and the lower cover; when the connection between the upper cover and the lower cover needs to be released, the ends of the first control plate and the second control plate that are away from each other are pressed, so that the two locking pieces are synchronously deflected in the direction away from the connecting piece, thereby releasing the lock on the connecting piece, thereby realizing the separation of the upper cover and the lower cover, so as to facilitate the removal of the filter screen and the filter balls for washing or replacement.

[0018] In the present invention, when the lower cover is connected to the upper cover, the filter screen and the filter ball enter the cavity of the upper cover, and the first rotating shaft, the rotating fan blades and the clamping blocks on both sides of the filter screen are pushed into the grooves at the bottom of the upper cover, and the clamping blocks are in a state of being limited by the grooves. When the medicine enters the filter ball through the hose and the lower cover, the movement of the medicine and the impact force generated by the water pump drive the rotating fan blades to rotate, and then drive the first rotating shaft to rotate, thereby driving the filter screen and the filter ball to rotate at a high speed, so that the medicine passes through the filter ball and the filter screen to filter impurities and enter the inside of the metering pump body, while increasing the contact range between the filter screen and the medicine liquid, avoiding the accumulation of impurities in a fixed area on the filter screen, thereby improving the filtering effect of the medicine liquid, and as the filter screen rotates, its surface continues to contact with the bottom of the impurity scraper, scrapes off the impurities on the surface of the filter screen and makes the impurities on the inner side of the impurity scraper, so as to facilitate subsequent collection work and prevent impurities from accumulating.

[0019] In the present invention, when the upper cover is connected with the lower cover, the concave part and the convex part of the first rotating shaft and the second rotating shaft are plugged into each other to complete the connection. When the filter rotates, the second rotating shaft is driven to rotate synchronously, and then the third rotating shaft is driven to rotate synchronously under the transmission of the pulley and the transmission belt, thereby driving the connecting rod to rotate, and then driving the driving gear to move and rotate along the inner side of the gear ring, thereby driving the piston end of the piston rod to move up and down in the piston cylinder in a circular manner under the cooperation of the connecting rod. When the piston rod descends, suction is generated inside the piston cylinder to suck impurities inside the impurity scraper into the piston cylinder, and the suction will not affect the inside of the collection box under the action of the one-way valve at the collection box. When the piston rod rises, thrust is generated inside the piston cylinder and the impurities are released from the collection box through the one-way valve on the upper part of the piston cylinder, and the impurities will not pass through the one-way valve at the connection between the impurity scraper and the piston cylinder. The impurities on the inside of the impurity scraper are discharged to the outside of the upper cover and the lower cover in the above manner to avoid accumulation inside the upper cover and the lower cover to affect the quality of the liquid medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0022] Figure 3 The local structure of the present invention is cut away Figure 1 ;

[0023] Figure 4 The local structure of the present invention is cut away Figure 2 ;

[0024] Figure 5 It is a schematic diagram of the expanded structure of the filter screen, the filter ball and the drive filter assembly in the present invention;

[0025] Figure 6 The local structure of the present invention is cut away Figure 3 ;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the upper cover and the impurity adsorption and collection device in the present invention;

[0027] Figure 8 It is a partial structural schematic diagram of the impurity adsorption and collection device in the present invention;

[0028] Fig. 9 The local structure of the present invention is cut away Figure 4 ;

[0029] Fig.10 It is a schematic diagram of the expanded structure of the quick connection component in the present invention.

[0030] In the figure: 1. metering pump body; 2. filter box device; 21. upper cover; 22. lower cover; 23. quick connection assembly; 231. connecting piece; 232. mounting piece; 233. spring; 234. locking piece; 24. control assembly; 241. first control board; 242. second control board; 3. water inlet; 4. water outlet; 5. filter ball; 6. filter screen; 7. drive filter assembly; 71. first rotating shaft; 72. clamping block; 73. rotating fan blade; 8. impurity scraper; 9. impurity adsorption and collection device; 91. linkage assembly; 911. second rotating shaft; 912. mounting plate; 913. pulley; 914. transmission belt; 915. third rotating shaft; 92. adsorption assembly; 921. connecting rod; 922. driving gear; 923. gear ring; 924. connecting rod; 925. piston rod; 926. piston cylinder; 927. collection box. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 10The present invention provides a technical solution: it includes a metering pump body 1, the metering pump body 1 is arranged on a horizontal plane, the upper and lower ends of one side of the metering pump body 1 are respectively provided with a liquid outlet and a liquid inlet, and a filter box device 2 is provided at the liquid inlet at the bottom of the metering pump body 1, and the filter box device 2 includes an upper cover 21, a lower cover 22, a quick connection component 23 and a control component 24, the top of the upper cover 21 is threadedly connected to the liquid inlet at the bottom of the metering pump body 1, and the quick connection component 23 is provided with two, and the two sides of the top of the lower cover 22 are detachably connected to the bottom of the upper cover 21 through a quick connection component 23, and a control component 24 is provided at the side end of each quick connection component 23, and a sealing gasket is provided on the butt surface of the upper cover 21 and the lower cover 22, and the lower cover 22 corresponds to the middle position of the upper cover 21 A water inlet 3 and a water outlet 4 are provided which are through-set, a filter ball 5 is placed at the upper end of the lower cover 22, a cavity for accommodating the filter ball 5 is provided inside the upper cover 21 and the lower cover 22, the filter ball 5 is provided with a plurality of through holes for the passage of the medicinal solution, the outer side of the filter ball 5 is covered with a filter screen 6, the filter screen 6 is provided with a plurality of filter holes for the passage of the medicinal solution and for intercepting impurities, and the filter holes on the filter screen 6 correspond to the positions of the through holes on the filter ball 5 one by one, two drive filter assemblies 7 are symmetrically arranged on both sides of the filter screen 6, an impurity scraper 8 is provided at the upper end of the upper cover 21, the impurity scraper 8 is fitted with the upper surface of the filter screen 6, two impurity adsorption and collection devices 9 are symmetrically arranged at both ends of the impurity filter, and the two impurity adsorption and collection devices 9 are respectively connected to the two drive filter assemblies 7.

[0033] In this embodiment, Figures 9 and 10 As shown, the quick connection assembly 23 includes a connecting piece 231, a mounting piece 232, a spring 233 and a locking piece 234. One side of the top of the lower cover 22 is provided with an inwardly recessed mounting groove. The mounting piece 232 is arranged inside the mounting groove on the lower cover 22. A recessed portion is provided in the middle of the top of the mounting piece 232. Two locking pieces 234 are provided. The two locking pieces 234 are symmetrically arranged above the mounting piece 232. The bottom ends of the two locking pieces 234 on the side close to each other are staggered and arranged in parallel with the side ends of the recessed portions on the mounting piece 232. The two locking members 234 are connected by shaft rotation, and the sides away from each other are arranged horizontally. A spring 233 is vertically arranged at the bottom of one side of each locking member 234 and one side of the top of the mounting frame. The sides of the two locking members 234 that are close to each other are arranged concavely, and the tops of the two locking members 234 do not contact each other. The connecting member 231 is arranged at one side of the bottom of the upper cover 21, and a protrusion is arranged in the middle of the bottom of the connecting member 231. The protrusion corresponds to the middle position of the two locking members 234, and the shape of the protrusion matches the shape of the concave between the two locking members 234.

[0034] The control assembly 24 includes a first control panel 241 and a second control panel 242, the first control panel 241 and the second control panel 242 are respectively arranged at the side ends of the two locking members 234, and one end of the first control panel 241 and the second control panel 242 is located on the outside of the lower cover 22, and the side end of the lower cover 22 is provided with an opening for the first control panel 241 and the second control panel 242 to pass through and move, and the adjacent ends of the first control panel 241 and the second control panel 242 are hinged to each other;

[0035] In order to facilitate the removal, cleaning or replacement of the filter ball 5 and the filter screen 6, the upper cover 21 and the lower cover 22 are set to a detachable design. When the upper cover 21 and the lower cover 22 need to be quickly connected together, the connecting piece 231 at the bottom of the upper cover 21 is placed between the two locking pieces 234 at the top of the lower cover 22 and pressed downward, so that the connecting piece 231 is squeezed between the two locking pieces 234. The locking pieces 234 are squeezed, and the two locking pieces 234 are deflected in a direction away from each other, and then quickly reset under the action of the spring 233, so that The connecting piece 231 is locked between the two locking pieces 234, thereby realizing the quick connection and fixation of the upper cover 21 and the lower cover 22; when it is necessary to release the connection between the upper cover 21 and the lower cover 22, the ends of the first control plate 241 and the second control plate 242 that are away from each other are pressed, so that the two locking pieces 234 are synchronously deflected in the direction away from the connecting piece 231, thereby releasing the lock on the connecting piece 231, thereby realizing the separation of the upper cover 21 and the lower cover 22, so as to facilitate the removal of the filter screen 6 and the filter ball 5 for flushing or replacement.

[0036] In this embodiment, Figures 3 to 5 As shown, the driving filter assembly 7 includes a first rotating shaft 71, a clamping block 72 and a rotating blade 73. The first rotating shaft 71 is provided with two, and the two first rotating shafts 71 are symmetrically arranged at the axis centers of both ends of the filter screen 6. The rotating blade 73 is provided with two, and the two rotating blades 73 are symmetrically arranged on the first rotating shaft 71 on both sides of the filter screen 6. The clamping blocks 72 are provided with two, and the two clamping blocks 72 are symmetrically arranged on the two first rotating shafts 71. The bottom of the upper cover 21 is provided with a groove for accommodating the rotating blade 73 and the first rotating shaft 71 and limiting the clamping blocks 72.

[0037] The impurity scraper 8 is arranged in an arc shape and matches the shape of the upper surface of the filter screen 6. The bottom of the impurity scraper 8 is arranged open and through holes are provided at both ends of the impurity scraper 8.

[0038] When the lower cover 22 is connected to the upper cover 21, the filter screen 6 and the filter ball 5 enter the cavity of the upper cover 21, and the first rotating shaft 71, the rotating fan blade 73 and the clamping block 72 on both sides of the filter screen 6 are pushed into the groove at the bottom of the upper cover 21, and the clamping block 72 is in a state of being limited by the groove. When the liquid medicine enters the filter ball 5 through the hose and the lower cover 22, the movement of the liquid medicine and the impact force generated by the water pump drive the rotating fan blade 73 to rotate, and then drive the first rotating shaft 71 to rotate, thereby driving the filter screen 6 and the filter ball 5 to rotate at a high speed, so that the liquid medicine passes through the filter ball 5 and the filter screen 6 to filter impurities and enters the metering pump body 1. At the same time, the contact range between the filter screen 6 and the liquid medicine is increased to prevent impurities from accumulating in a fixed area on the filter screen 6, thereby improving the filtering effect of the liquid medicine, and as the filter screen 6 rotates, its surface continues to contact with the bottom of the impurity scraper 8, scrapes the impurities on the surface of the filter screen 6 and makes the impurities on the inner side of the impurity scraper 8, so as to facilitate subsequent collection work and prevent impurities from accumulating.

[0039] In this embodiment, Figures 6 to 8 As shown, the impurity adsorption and collection device 9 includes a linkage component 91 and an adsorption component 92, the linkage component 91 is arranged on one side of the upper cover 21, the adsorption component 92 is arranged at the side end of the linkage component 91, the linkage component 91 includes a second rotating shaft 911, a mounting plate 912, a pulley 913, a transmission belt 914 and a third rotating shaft 915, the second rotating shaft 911 horizontally passes through the side end of the upper cover 21 and is rotatably connected thereto, one end of the second rotating shaft 911 is located in the slot at the bottom of the upper cover 21, the end of the second rotating shaft 911 is provided with a recessed portion, and the first rotating shaft 71 is close to the second rotating shaft 911. One end of the second rotating shaft 911 is provided with a raised portion that fits with the recessed portion of the second rotating shaft 911, and the ends of the second rotating shaft 911 and the first rotating shaft 71 are plugged into each other through the recessed portion and the raised portion. The mounting plate 912 is arranged at the side end of the upper cover 21 and is located at the lower part of the second rotating shaft 911. The third rotating shaft 915 is arranged directly below the second rotating shaft 911 and one end of the third rotating shaft 915 is rotatably connected to the lower part of the mounting plate 912. Two pulleys 913 are provided, and the two pulleys 913 are arranged at the ends of the second rotating shaft 911 and the third rotating shaft 915. The transmission belt 914 is sleeved on the two pulleys 913;

[0040] The adsorption assembly 92 includes a connecting rod 921, a driving gear 922, a gear ring 923, a connecting rod 924, a piston rod 925, a piston cylinder 926 and a collection box 927. One end of the connecting rod 921 is connected to one end of the third rotating shaft 915, and the driving gear 922 is rotatably set on the other end of the connecting rod 921. The gear ring 923 is set on the outside of the driving gear 922 and the axis of the gear ring 923 corresponds to the axis position of the third rotating shaft 915. The driving gear 922 is meshed with the teeth on the inner side of the gear ring 923. The piston cylinder 926 is set at the side end of the upper cover 21, and one end of the piston cylinder 926 is vertically set above the gear ring 923. The other end of 926 horizontally passes through the side end of the upper cover 21 and is connected to the side end of the impurity scraper 8, and a one-way valve is provided at the connection between the piston cylinder 926 and the impurity scraper 8, and a filter screen through which the liquid medicine cannot pass but impurities can pass is provided at the connection between the impurity scraper 8 and the piston cylinder 926. One end of the connecting rod 924 is coaxially connected to the driving gear 922, and the other end of the connecting rod 924 is rotatably connected to one end of the piston rod 925. The other end of the piston rod 925 vertically passes through the bottom of the piston cylinder 926 and is slidably connected thereto up and down. A one-way valve is provided on the top of the piston cylinder 926, and a collecting box 927 is detachably provided on the side end of the upper cover 21, and the bottom of the collecting box 927 is connected to the top of the one-way valve.

[0041] When the upper cover 21 is connected to the lower cover 22, the concave and convex parts of the first rotating shaft 71 and the second rotating shaft 911 are plugged into each other to complete the connection. When the filter screen 6 rotates, the second rotating shaft 911 is driven to rotate synchronously, and then the third rotating shaft 915 is driven to rotate synchronously under the transmission of the pulley 913 and the transmission belt 914, thereby driving the connecting rod 921 to rotate, and then driving the driving gear 922 to move and rotate along the inner side of the gear ring 923, so that the piston end of the piston rod 925 is driven to move up and down in a cycle in the piston cylinder 926 with the cooperation of the connecting rod 924. When the piston rod 925 descends, the piston cylinder 9 The suction force generated inside 26 will suck the impurities on the inside of the impurity scraper 8 into the inside of the piston cylinder 926, and the suction force will not affect the inside of the collection box 927 due to the action of the one-way valve at the collection box 927. When the piston rod 925 rises, a thrust is generated inside the piston cylinder 926 and the impurities are released from the collection box 927 through the one-way valve on the upper part of the piston cylinder 926, and the impurities will not pass through the one-way valve at the connection between the impurity scraper 8 and the piston cylinder 926. In this way, the impurities on the inside of the impurity scraper 8 can be discharged to the outside of the upper cover 21 and the lower cover 22 to avoid accumulation inside the upper cover 21 and the lower cover 22 and affecting the quality of the medicine.

[0042] The use method and advantages of the present invention: The use method of the metering pump that can reduce impurity accumulation, the working process is as follows:

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown:

[0044] S1: When the device is in use, firstly, the upper cover 21 and the lower cover 22 are quickly assembled through the quick connection assembly 23, and at this time, the filter ball 5, the filter screen 6 and the drive filter assembly 7 are synchronously installed in the interior of the upper cover 21 and the lower cover 22, and the drive filter assembly 7 and the impurity adsorption and collection device 9 are connected to each other, and the upper surface of the filter screen 6 is in contact with the lower end of the impurity scraper 8, and then a hose is connected at the water inlet 3 at the bottom of the lower cover 22 and the water pump for conveying the liquid medicine, and a hose is connected at the liquid outlet at the top of the metering pump body 1 and the area where the liquid medicine needs to be put in, so as to facilitate the delivery and precise quantitative delivery of the liquid medicine;

[0045] S2: Start the water pump and the metering pump body 1, so that the liquid medicine passes through the filter ball 5 and the filter screen 6 inside the lower cover 22 and the upper cover 21 through the hose to enter the metering pump body 1. When the liquid medicine passes through the filter ball 5, the filter ball 5 and the filter screen 6 are driven to rotate under the transmission of the filter assembly 7, so that the liquid medicine is filtered more comprehensively, and impurities are prevented from accumulating in a fixed area on the filter screen 6. The filtered liquid medicine enters the metering pump body 1, and the liquid medicine is accurately and quantitatively delivered through the hose at the liquid outlet of the metering pump body 1;

[0046] S3: As the filter screen 6 and the filter ball 5 rotate, the impurities accumulated in the filter holes on the surface of the filter screen 6 are continuously removed by the impurity scraper 8 and accumulated on the inner side of the impurity scraper 8 through contact with the impurity scraper 8. As the filter ball 5 rotates, the impurity adsorption and collection device 9 is driven to extract the impurities accumulated inside the impurity scraper 8 to the outside of the upper cover 21 for collection, thereby preventing the impurities from accumulating inside the upper cover 21 and contaminating the liquid medicine.

[0047] S4: When the filter screen 6 and the filter ball 5 need to be rinsed, cleaned or replaced, the connection between the upper cover 21 and the lower cover 22 is released through the control component 24, so that the filter screen 6 and the filter ball 5 can be smoothly removed from the upper cover 21 and the lower cover 22 to facilitate cleaning or replacement.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A metering pump capable of reducing impurity accumulation, characterized in that: The invention comprises a metering pump body (1), wherein the metering pump body (1) is arranged on a horizontal plane, and a liquid outlet and a liquid inlet are respectively arranged at the upper and lower ends of one side of the metering pump body (1), and a filter box device (2) is arranged at the liquid inlet at the bottom of the metering pump body (1), and the filter box device (2) comprises an upper cover (21), a lower cover (22), a quick connection component (23) and a control component (24), wherein the top of the upper cover (21) is threadedly connected to the liquid inlet at the bottom of the metering pump body (1), and two quick connection components (23) are provided, and both sides of the top of the lower cover (22) are detachably connected to the bottom of the upper cover (21) through a quick connection component (23), and a control component (24) is provided at the side end of each quick connection component (23), and a sealing gasket is provided at the butt joint surface between the upper cover (21) and the lower cover (22), and a through-type gasket is provided at the corresponding position of the middle of the lower cover (22) and the upper cover (21). A water inlet (3) and a water outlet (4), a filter ball (5) is placed at the upper end of the lower cover (22), a cavity for accommodating the filter ball (5) is provided inside the upper cover (21) and the lower cover (22), the filter ball (5) is provided with a plurality of through holes for the passage of the medicinal liquid, the outer side of the filter ball (5) is covered with a filter net (6), the filter net (6) is provided with a plurality of filter holes for the passage of the medicinal liquid and for intercepting impurities, and the filter holes on the filter net (6) correspond to the positions of the through holes on the filter ball (5), two drive filter components (7) are symmetrically arranged on both sides of the filter net (6), an impurity scraper (8) is provided at the upper end of the upper cover (21), the impurity scraper (8) is in contact with the upper surface of the filter net (6), two impurity adsorption and collection devices (9) are symmetrically arranged at both ends of the impurity filter component, and the two impurity adsorption and collection devices (9) are respectively connected to the two drive filter components (7); The driving filter assembly (7) comprises a first rotating shaft (71), a clamping block (72) and a rotating blade (73); two first rotating shafts (71) are provided, and the two first rotating shafts (71) are symmetrically arranged at the axis centers of both ends of the filter screen (6); two rotating blades (73) are provided, and the two rotating blades (73) are symmetrically arranged on the first rotating shaft (71) on both sides of the filter screen (6); two clamping blocks (72) are provided, and the two clamping blocks (72) are symmetrically arranged on the two first rotating shafts (71); and a groove for accommodating the rotating blades (73) and the first rotating shaft (71) and limiting the clamping blocks (72) is provided at the bottom of the upper cover (21); The impurity adsorption and collection device (9) comprises a linkage component (91) and an adsorption component (92); the linkage component (91) is arranged on one side of the upper cover (21); the adsorption component (92) is arranged at the side end of the linkage component (91); the linkage component (91) comprises a second rotating shaft (911), a mounting plate (912), a pulley (913), a transmission belt (914), and a third rotating shaft (915); the second rotating shaft (911) horizontally passes through the side end of the upper cover (21) and is rotatably connected thereto; one end of the second rotating shaft (911) is located in a slot at the bottom of the upper cover (21); a recess is provided at the end of the second rotating shaft (911); and the first rotating shaft (71) is close to the second rotating shaft (91 1) is provided with a raised portion that fits with the recessed portion of the second rotating shaft (911), the second rotating shaft (911) and the end of the first rotating shaft (71) are plugged into each other through the recessed portion and the raised portion, the mounting plate (912) is arranged at the side end of the upper cover (21) and is located at the bottom of the second rotating shaft (911), the third rotating shaft (915) is arranged directly below the second rotating shaft (911) and one end of the third rotating shaft (915) is rotatably connected to the bottom of the mounting plate (912), two pulleys (913) are provided, the two pulleys (913) are arranged at the ends of the second rotating shaft (911) and the third rotating shaft (915), and the transmission belt (914) is sleeved on the two pulleys (913); The adsorption assembly (92) comprises a connecting rod (921), a driving gear (922), a gear ring (923), a connecting rod (924), a piston rod (925), a piston cylinder (926) and a collection box (927); one end of the connecting rod (921) is connected to one end of the third rotating shaft (915); the driving gear (922) is rotatably arranged on the other end of the connecting rod (921); the gear ring (923) is arranged on the outside of the driving gear (922) and the axis of the gear ring (923) corresponds to the axis of the third rotating shaft (915); the driving gear (922) is meshed with teeth on the inner side of the gear ring (923); the piston cylinder (926) is arranged on the side end of the upper cover (21); one end of the piston cylinder (926) is vertically arranged above the gear ring (923); The other end of the piston cylinder (926) horizontally passes through the side end of the upper cover (21) and is connected to the side end of the impurity scraper (8), and a one-way valve is provided at the connection point between the piston cylinder (926) and the impurity scraper (8), and a filter screen through which the liquid medicine cannot pass but impurities can pass is provided at the connection point between the impurity scraper (8) and the piston cylinder (926). One end of the connecting rod (924) is coaxially connected to the driving gear (922), and the other end of the connecting rod (924) is rotatably connected to one end of the piston rod (925). The other end of the piston rod (925) vertically passes through the bottom of the piston cylinder (926) and is slidably connected thereto up and down. A one-way valve is provided at the top of the piston cylinder (926), and a collecting box (927) is detachably provided at the side end of the upper cover (21), and the bottom of the collecting box (927) is connected to the top of the one-way valve.

2. A metering pump capable of reducing impurity accumulation according to claim 1, characterized in that: The quick connection assembly (23) comprises a connecting piece (231), a mounting piece (232), a spring (233) and a locking piece (234); a mounting groove recessed inwardly is provided on one side of the top of the lower cover (22); the mounting piece (232) is arranged inside the mounting groove on the lower cover (22); a recessed portion is provided in the middle of the top of the mounting piece (232); two locking pieces (234) are provided, the two locking pieces (234) are symmetrically arranged above the mounting piece (232); the bottom ends of the two locking pieces (234) on the sides close to each other are staggered and aligned with the recessed portion on the mounting piece (232); The side ends are coaxially rotatably connected, the two locking members (234) are arranged horizontally on a side away from each other, a spring (233) is vertically arranged on the bottom of one side of each locking member (234) and one side of the top of the mounting frame, the two locking members (234) are arranged concavely on a side close to each other, and the tops of the two locking members (234) do not contact each other, the connecting member (231) is arranged on one side of the bottom of the upper cover (21), and a protrusion is provided in the middle of the bottom of the connecting member (231), the protrusion corresponds to the middle position of the two locking members (234), and the shape of the protrusion matches the shape of the concave between the two locking members (234).

3. A metering pump capable of reducing impurity accumulation according to claim 2, characterized in that: The control assembly (24) comprises a first control panel (241) and a second control panel (242), wherein the first control panel (241) and the second control panel (242) are respectively arranged at the side ends of the two locking members (234), and one end of the first control panel (241) and the second control panel (242) are located outside the lower cover (22), and an opening is provided at the side end of the lower cover (22) for facilitating the first control panel (241) and the second control panel (242) to pass through and move, and adjacent ends of the first control panel (241) and the second control panel (242) are hinged to each other.

4. A metering pump capable of reducing impurity accumulation according to claim 3, characterized in that: The impurity scraping member (8) is arranged in an arc shape and matches the shape of the upper surface of the filter screen (6); the bottom of the impurity scraping member (8) is arranged in an open manner and through holes are provided at both ends of the impurity scraping member (8).

5. A method for using a metering pump capable of reducing impurity accumulation according to claim 1, comprising the following steps: S1: When the device is in use, the upper cover (21) and the lower cover (22) are first quickly assembled through the quick connection assembly (23), and at this time, the filter ball (5), the filter screen (6) and the drive filter assembly (7) are simultaneously installed in the interior of the upper cover (21) and the lower cover (22), and the drive filter assembly (7) and the impurity adsorption and collection device (9) are connected to each other, and the upper surface of the filter screen (6) is in contact with the lower end of the impurity scraper (8), and then a hose is connected between the water inlet (3) at the bottom of the lower cover (22) and the water pump for conveying the liquid medicine, and a hose is connected between the liquid outlet at the top of the metering pump body (1) and the area where the liquid medicine needs to be put in, so as to facilitate the conveying and precise quantitative delivery of the liquid medicine; S2: starting the water pump and the metering pump body (1), so that the liquid medicine passes through the filter ball (5) and the filter screen (6) inside the lower cover (22) and the upper cover (21) through the hose and enters the metering pump body (1). While the liquid medicine passes through the filter ball (5), the filter ball (5) and the filter screen (6) are driven to rotate by the filter assembly (7), thereby filtering the liquid medicine more comprehensively and preventing impurities from accumulating in a fixed area on the filter screen (6). The filtered liquid medicine enters the metering pump body (1) and is accurately and quantitatively dosed through the hose at the liquid outlet of the metering pump body (1); S3: As the filter screen (6) and the filter ball (5) rotate, impurities accumulated in the filter holes on the surface of the filter screen (6) are continuously removed by the impurity scraper (8) and accumulated on the inner side of the impurity scraper (8) through contact with the impurity scraper (8), and as the filter ball (5) rotates, the impurity adsorption and collection device (9) is driven to extract the impurities accumulated inside the impurity scraper (8) to the outside of the upper cover (21) for collection, thereby preventing the impurities from accumulating inside the upper cover (21) and contaminating the liquid medicine; S4: When the filter screen (6) and the filter ball (5) need to be rinsed, cleaned or replaced, the connection between the upper cover (21) and the lower cover (22) is released by the control component (24), so that the filter screen (6) and the filter ball (5) can be smoothly removed from the upper cover (21) and the lower cover (22) to facilitate cleaning or replacement.

Images