Peristaltic pump and inductive control system thereof

Abstract

The invention relates to a peristaltic pump and an inductive control system thereof. The peristaltic pump comprises a shell and a pump pipe, comprising a roller support, the roller support is arranged in a shell and comprises a placing frame and a fixing cover, and the fixing cover is connected with the placing frame; the idler wheels are located between the containing frame and the fixing cover, each idler wheel is provided with a transmission part, and the transmission parts and the idler wheels are integrally formed; the main transmission wheel is positioned between the rollers and is in transmission connection with the transmission part; the placement frame is provided with a plurality of placement columns corresponding to the rollers, each placement column is provided with a plurality of sunken parts, and first oil storage spaces used for heat dissipation and oil storage are formed between the sunken parts and the rollers. The transmission part and the roller are integrally formed, so that the number of parts is reduced, the assembly deviation is small, the movement stability between the roller and the pump pipe is improved, the first oil storage space is formed between the placement column and the roller, the first oil storage space is filled with lubricating grease, lubrication can be conducted when the roller rotates, and the service life of the roller is prolonged. And relative sliding between the roller and the pump pipe is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of peristaltic pumps, and more specifically, to a peristaltic pump and its induction control system. Background Art

[0002] The peristaltic pump drives the roller bracket to rotate and roll over the pump tube through a motor or a motor to achieve the function of pumping liquid. During this period, the motor transfers kinetic energy to the roller bracket.

[0003] The transmission method of the prior art is to assemble the transmission wheel on the roller bracket. Under the rated voltage, the motor drives the transmission wheel to rotate, so as to drive the roller bracket to rotate and roll over the pump tube. Moreover, the roller and the gear are separate and independent parts, and the roller, the roller bracket and the gear are assembled through a shaft. This structure has a large number of parts and complex assembly, resulting in poor stability in the operation between the hose and the roller, and there is a risk of relative sliding between the roller and the hose. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing structure of the roller, the gear and the roller bracket has more parts and complex assembly, resulting in poor stability in the operation between the roller and the hose and prone to relative sliding. In view of the above defects of the prior art, a peristaltic pump and its induction control system are provided.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0006] Construct a peristaltic pump, including a housing and at least one pump tube, and the pump tube is detachably arranged in the housing; wherein, it includes:

[0007] A roller bracket, the roller bracket is arranged in the housing, including a placement rack and a fixed cover, and the fixed cover is connected to the placement rack; a plurality of rollers, the rollers are respectively located between the placement rack and the fixed cover, and each roller is respectively provided with a transmission part, and the transmission part is integrally formed with the roller; a main transmission wheel, the main transmission wheel is located between the rollers and is in transmission connection with the transmission part to form a planetary-like transmission structure; the placement rack is provided with a plurality of placement columns corresponding to the rollers, and the placement columns are respectively provided with a plurality of recessed parts, and a first oil storage space for heat dissipation and oil storage is formed between the recessed parts and the rollers; wherein, the main transmission wheel rotates to drive the roller bracket to rotate and periodically squeeze the pump tube to push the liquid in the pump tube.

[0008] Further, the housing is provided with a fixed column and is arranged towards the roller bracket; the fixed cover is provided with a fixed position, and the fixed position is provided with a plurality of arc-shaped grooves; when the fixed column is located in the fixed position, a second oil storage space is formed between the arc-shaped groove and the fixed column.

[0009] Furthermore, the fixed cover is provided with a plurality of limiting grooves corresponding to the rollers, and the rollers are respectively located in the limiting grooves; each of the limiting grooves is respectively provided with a limiting post; the rollers are respectively provided with through holes, and the placing posts respectively penetrate through the through holes and contact the limiting posts; an installation groove is provided in the shell, the fixed cover is located in the installation groove and rotates in the installation groove; the limiting grooves are provided with openings, and the openings are respectively arranged towards the groove walls of the installation groove.

[0010] Furthermore, the interior of the placing post is hollow, and a stepped portion is provided at the top. The limiting post is provided with a central hole, and the stepped portion penetrates through the central hole and abuts against the limiting post.

[0011] Furthermore, the fixed cover is provided with a protruding post, the protruding post is arranged towards the main transmission wheel and is located among the plurality of rollers; the protruding post is provided with grooves corresponding to the rollers, the grooves are connected to the limiting grooves, and a rotating space is formed between the grooves and the rollers.

[0012] Furthermore, it includes a driving member. The main transmission wheel is provided with a clamping groove, and the output shaft of the driving member penetrates through the clamping groove and is fixedly connected to the main transmission wheel; an installation shell is provided between the shell and the driving member, and the installation shell is clamped and connected to the shell; the installation shell is provided with a polygonal column in a polygonal shape, the polygonal column is provided with a recessed portion and an abutting portion, and the recessed portion and the abutting portion are arranged alternately; a circular hole is provided at the bottom of the placing rack, the polygonal column is located in the circular hole, and the abutting portion abuts against the inner wall of the circular hole; a third oil storage space is formed between the recessed portion and the circular hole.

[0013] Furthermore, the shell is provided with an upper clamping groove, and the installation shell is provided with a lower clamping groove. The upper clamping groove and the lower clamping groove are arranged oppositely, and the pump pipe is located between the upper clamping groove and the lower clamping groove; installation members are respectively provided at both ends of the pump pipe, the installation shell is provided with a heightening portion, the heightening portion is correspondingly arranged with the lower clamping groove and is located on one side of the lower clamping groove; the upper clamping groove is respectively provided with arc-shaped fixing strips, and the installation members are provided with notch openings corresponding to the fixing strips; the installation members are located above the heightening portion, and the fixing strips are respectively located in the notch openings.

[0014] Furthermore, the pump pipe includes a water outlet end, and a one-way valve member is provided at the water outlet end. When the pump pipe rebounds, the one-way valve member closes.

[0015] The present invention also provides an induction control system for a peristaltic pump, which includes an induction element, a control chip, and a plurality of magnetic blocks; the magnetic blocks are arranged on the roller, and the induction element is electrically connected to the control chip; the induction element and the control chip are arranged in the housing; when the roller rotates, the induction element senses the change in the magnetic field and converts it into a pulse signal and feeds it back to the control chip.

[0016] The present invention also provides a roller for a peristaltic pump, which is provided with a contact layer in contact with the pump tube, and the contact layer is made of a wear-resistant elastic material.

[0017] The beneficial effects of the present invention are as follows: the reduction gear train is changed from the traditional spur gear train to a planetary gear-like train, the transmission part and the roller are integrally formed, the main transmission wheel directly drives the roller to rotate, thereby driving the rotation of the roller bracket, and a plurality of placement columns are arranged on the placement frame, which can directly assemble the roller, reduce the number of parts, reduce the assembly deviation, improve the stability of the movement between the roller and the pump tube, and reduce the production cost; and a first oil storage space is provided between the placement column and the roller, and the first oil storage space is filled with grease, which can lubricate when the roller rotates, prevent dry friction of the moving pair, avoid the phenomenon of relative sliding between the roller and the pump tube, reduce the wear of the roller and the pump tube, and improve the service life.

[0018] By arranging magnetic blocks on the roller, an induction element and a control chip in the housing, the rotation speed of the roller and the amount of liquid pumped can be dynamically adjusted, so as to ensure the stability of the liquid transportation in the pump tube and detect whether the roller bracket operates abnormally. When relative sliding occurs between the roller and the pump tube, the driving member can be controlled to stop or the rotation speed can be adjusted. Description of the Drawings

[0019] Figure 1 is an exploded schematic view of a peristaltic pump in an embodiment of the present invention;

[0020] Figure 2 is a left view schematic diagram of a peristaltic pump in an embodiment of the present invention;

[0021] Figure 3 is of the present invention Figure 2 is a cross-sectional schematic view taken along A-A in;

[0022] Figure 4 is a three-dimensional schematic diagram of the housing in an embodiment of the present invention;

[0023] Figure 5 is a three-dimensional schematic diagram of the fixed cover in an embodiment of the present invention;

[0024] Figure 6 is a three-dimensional schematic diagram of the fixed cover from another angle in an embodiment of the present invention;

[0025] Figure 7 It is a front view schematic diagram of the housing and the mounting shell in an embodiment of the present invention;

[0026] Figure 8 is of the present invention Figure 7 a cross-sectional schematic diagram at C-C in;

[0027] Figure 9 is of the present invention Figure 7 a cross-sectional schematic diagram at D-D in;

[0028] Figure 10 It is a three-dimensional schematic diagram of a placement rack in an embodiment of the present invention;

[0029] Figure 11 It is a three-dimensional schematic diagram of the interior of the housing in an embodiment of the present invention;

[0030] Figure 12 It is a three-dimensional schematic diagram of a main driving wheel in an embodiment of the present invention;

[0031] Figure 13 It is a three-dimensional schematic diagram of the housing from another angle in an embodiment of the present invention;

[0032] Figure 14 It is a right view schematic diagram of the outer housing and the roller bracket in an embodiment of the present invention;

[0033] Figure 15 is of the present invention Figure 14 a cross-sectional schematic diagram at E-E in;

[0034] Figure 16 It is a three-dimensional schematic diagram of a mounting member in an embodiment of the present invention;

[0035] Figure 17 It is a structural block diagram of an induction control system of a peristaltic pump in an embodiment of the present invention.

[0036] Reference numeral description: housing 1, pump tube 2, roller bracket 3, placement rack 301, fixed cover 302, roller 4, transmission part 401, main driving wheel 5, placement column 303, first recessed part 304, first oil storage space 305, fixed column 101, fixed position 306, arc-shaped groove 307, second oil storage space 308, limit groove 309, limit column 310, through hole 402, installation groove 102, opening 311, stepped part 312, center hole 313, protruding column 314, groove 315, rotation space 316, driving part 6, engaging groove 501, mounting shell 7, polygonal column 701, second recessed part 702, abutting part 703, round hole 317, third oil storage space 318, upper clamping groove 103, lower clamping groove 704, mounting member 201, heightening part 705, fixing strip 104, notch 202, water outlet end 203, sensing part 10, control chip 20, magnetic block 30. Detailed implementation manners

[0037] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] Please refer to Figure 1 , the present invention provides a peristaltic pump, which includes a housing 1 and at least one pump tube 2. The pump tube 2 is detachably arranged in the housing 1. Specifically, it includes a roller bracket 3 arranged in the housing 1, which includes a placement rack 301 and a fixing cover 302. The fixing cover 302 is connected to the placement rack 301. A plurality of rollers 4 are respectively located between the placement rack 301 and the fixing cover 302, and each roller 4 is respectively provided with a transmission part 401, and the transmission part 401 is integrally formed with the roller 4. A main transmission wheel 5 is located between the rollers 4 and is in transmission connection with the transmission part 401 to form a planetary-like transmission structure. The placement rack 301 is provided with a plurality of placement columns 303 corresponding to the rollers 4. The placement columns 303 are respectively provided with a plurality of first recessed parts 304, and a first oil storage space 305 for heat dissipation and oil storage is formed between the first recessed parts 304 and the rollers 4. Among them, the rotation of the main transmission wheel 5 drives the roller bracket 3 to rotate, and periodically squeezes the pump tube 2 to push the liquid in the pump tube 2.

[0039] In this embodiment, as Figure 1 shown, the pump tube 2 is detachably arranged in the housing 1 and can be replaced when replacement or maintenance is required. The pump tube 2 can be one or more. In a specific embodiment, a plurality of pump tubes 2 are arranged in parallel in the housing 1. By driving the plurality of pump tubes 2 to work simultaneously or alternately by a motor, the conveying efficiency can be improved, and it can be applied to scenarios of multi-liquid path distribution, such as a medical infusion system.

[0040] The roller bracket 3 is arranged in the housing 1, including a placement rack 301 and a fixing cover 302. The rollers 4 are located between the placement rack 301 and the fixing cover 302, and each roller 4 is respectively provided with a transmission part 401, and the transmission part 401 is integrally formed with the roller 4. The rollers 4 directly serve as a part for driving the roller bracket 3 to rotate, and the risk of relative sliding between the rollers 4 and the pump tube 2 is relatively low.

[0041] Specifically, the traditional roller 4 and roller bracket 3 are fixed by a metal shaft, and then the roller 4 is assembled with a gear or a gear ring. This structure has a large number of parts, and the assembly is relatively complicated, which easily causes the assembly tolerance to overlap. There is no fixed method for the operation between the roller 4 and the hose, resulting in poor stability of the operation between the roller 4 and the pump tube 2, and there is a risk of relative sliding between the roller 4 and the pump tube 2. The main transmission wheel 5 of the present application is located in the middle position of the roller 4 and is connected to the transmission part 401. The main transmission wheel 5 and the roller 4 form a planetary transmission structure. The reduction gear train is transformed from a traditional spur gear train to a planetary gear train. The roller 4 and the planetary gear are combined into one part. The main transmission wheel 5 directly drives the roller 4 to rotate, thereby driving the roller bracket 3 to rotate, which not only simplifies the structure and installation steps of the peristaltic pump, reduces parts, but also reduces production costs. In a specific embodiment, the main transmission wheel 5 is a gear, and the transmission part 401 is a spur gear corresponding to the gear. In addition, the placement rack 301 is provided with a plurality of placement columns 303, and the roller 4 can be directly installed on the placement columns 303, which can reduce the number of parts, reduce assembly deviation, improve the stability of movement between the roller 4 and the pump tube 2, and avoid relative sliding between the roller 4 and the pump tube 2.

[0042] Further, such as Figure 3 and Figure 10 As shown, the placement column 303 is provided with a plurality of first recessed portions 304. In the present embodiment, the first recessed portion 304 is arc-shaped, and a first oil storage space 305 is formed between the first recessed portion 304 and the roller 4. The first oil storage space 305 is filled with grease, which is a plastic lubricant in the form of a semi-solid grease. When the roller 4 rotates around the placement column 303, it can play a lubricating role, prevent dry friction during the rolling process of the roller 4, improve the service life, reduce noise, and avoid the roller 4 not rotating due to excessive resistance, only rotating and dragging with the roller bracket 3, and sliding on the surface of the pump pipe 2, thereby causing relative sliding phenomenon, causing the pump pipe 2 to wear. The setting of the first oil storage space 305 enables a heat dissipation space to be provided between the first recessed portion 304 and the roller 4, thereby playing a role in heat dissipation. In addition, it can also play a sealing role, making the transmission more stable and the roller 4 not easy to tilt. It can also play a role in rust prevention, preventing the placement column 303 from rusting, which may increase the resistance to the rotation of the roller 4 and cause relative sliding.

[0043] In one embodiment, the shell 1 is provided with a fixing column 101 and is arranged toward the roller bracket 3; the fixing cover 302 is provided with a fixing position 306, and the fixing position 306 is provided with a plurality of arc grooves 307; when the fixing column 101 is located in the fixing position 306, a second oil storage space 308 is formed between the arc groove 307 and the fixing column 101.

[0044] Specifically, Figure 4As shown, a fixing post 101 is provided inside the housing 1, and the protruding direction of the fixing post 101 faces the roller bracket 3. As Figure 5 shown, the fixing cover 302 is provided with a fixing position 306. When installing the housing 1, align the fixing post 101 with the fixing position 306 and then install it.

[0045] Furthermore, the fixing position 306 is provided with a plurality of arc-shaped grooves 307 in an arc shape, and the bottom of the fixing position 306 is sealed. After installing the fixing post 101 in the fixing position 306, a second grease storage space 308 will be formed between the arc-shaped grooves 307 and the fixing post 101. As Figure 8 shown, the second grease storage space 308 can be used to store grease and dissipate heat when the fixing cover 302 rotates. After filling the second grease storage space 308 with grease, under the action of the grease, the resistance of the rotation of the fixing cover 302 will become smaller, making the rotation process smoother, avoiding relative sliding between the roller 4 and the pump tube 2 due to unsmooth rotation between the fixing cover 302 and the housing 1, and preventing dry friction of the kinematic pair.

[0046] In an embodiment, the fixing cover 302 is provided with a plurality of limiting grooves 309 corresponding to the rollers 4, and the rollers 4 are respectively located in the limiting grooves 309; each limiting groove 309 is respectively provided with a limiting post 310; the rollers 4 are respectively provided with through holes 402, the placing posts 303 respectively penetrate through the through holes 402 and contact the limiting posts 310; an installation groove 102 is provided inside the housing 1, the fixing cover 302 is located in the installation groove 102 and rotates in the installation groove 102; the limiting grooves 309 are provided with openings 311, and the openings 311 are respectively arranged towards the groove wall of the installation groove 102.

[0047] Specifically, as Figure 6 shown, the fixing cover 302 is provided with a plurality of limiting grooves 309 in the direction towards the placing rack 301. After installing the rollers 4, the rollers 4 are respectively located in the limiting grooves 309. Each limiting groove 309 is respectively provided with a limiting post 310. As Figure 11 shown, each roller 4 is respectively provided with a through hole 402. When installing the rollers 4, the placing posts 303 provided on the placing rack 301 respectively penetrate through the through holes 402 of the rollers 4 and contact the limiting posts 310. At this time, the rollers 4 are located in the limiting grooves 309.

[0048] As Figure 4 and Figure 8 shown, an installation groove 102 is also provided inside the housing 1. After installing the rollers 4 on the roller bracket 3, install the housing 1 and the roller bracket 3. At this time, the fixing cover 302 is located in the installation groove 102 and can rotate in the installation groove 102. Furthermore, as Figure 6 shown, the limiting grooves 309 are respectively provided with openings 311, and the directions of the openings 311 face the groove wall of the installation groove 102. As Figure 8As shown, after the fixed cover 302 is installed on the housing 1, the openings 311 are respectively close to the groove walls of the installation groove 102. The roller 4 rotates between the limiting groove 309 and the installation groove 102. The settings of the limiting groove 309 and the installation groove 102 limit the movement track of the roller 4, reducing the risk of relative sliding between the roller 4 and the pump pipe 2 and preventing deviation.

[0049] In one embodiment, the interior of the placement column 303 is hollow, and a stepped portion 312 is provided at the top. The limiting column 310 is provided with a central hole 313. The stepped portion 312 penetrates through the central hole 313 and abuts against the limiting column 310.

[0050] Specifically, as Figure 9 shown, the interior of the placement column 303 is hollow, which can save costs and improve installation accuracy. As Figure 12 shown, a stepped portion 312 is provided at the top of the placement column 303. As Figure 6 shown, the limiting column 310 is provided with a central hole 313. Please refer to Figure 11 . When the placement column 303 is installed on the fixed cover 302, the stepped portion 312 will penetrate through the central hole 313 of the limiting column 310 until the stepped portion 312 abuts against the limiting column 310. The structure in which the placement column 303 penetrates through the roller 4 can fix the roller 4 between the fixed cover 302 and the placement frame 301.

[0051] In one embodiment, the fixed cover 302 is provided with a raised column 314. The raised column 314 faces the main drive wheel 5 and is located among a plurality of rollers 4. The raised column 314 is provided with grooves 315 corresponding to the rollers 4. The grooves 315 are connected to the limiting grooves 309, and a rotation space 316 is formed between the grooves 315 and the rollers 4.

[0052] Specifically, as Figure 11 shown, the fixed cover 302 is provided with a raised column 314, and the raised column 314 is located at the middle position among a plurality of rollers 4. Moreover, a plurality of grooves 315 are provided on the side surface of the raised column 314. The number and radian of the grooves 315 are correspondingly set with those of the rollers 4. In this embodiment, there are three rollers 4, so the number of grooves 315 is three, and the radian of the grooves 315 is the same as the radian on the outer side of the rollers 4. A rotation space 316 is provided between the grooves 315 and the rollers 4, preventing the rollers 4 from tilting and hitting the fixed column 101 when rotating.

[0053] It is worth mentioning that the number of rollers 4 can also be 4 or 5. Similarly, each roller 4 is respectively provided with an independent transmission part 401. When the number of rollers 4 increases, a more stable flow output can be achieved.

[0054] In one embodiment, it includes a driving member 6. The main transmission wheel 5 is provided with a clamping groove 501. The output shaft of the driving member 6 penetrates through the clamping groove 501 and is fixedly connected to the main transmission wheel 5. An installation shell 7 is arranged between the housing 1 and the driving member 6. The installation shell 7 is snap-connected to the housing 1. The installation shell 7 is provided with a polygonal column 701. The polygonal column 701 is provided with a second recess 702 and an abutting portion 703. The second recess 702 and the abutting portion 703 are arranged alternately. The bottom of the placement rack 301 is provided with a round hole 317. The polygonal column 701 is located in the round hole 317, and the abutting portion 703 abuts against the inner wall of the round hole 317. A third grease storage space 318 is formed between the second recess 702 and the round hole 317.

[0055] Specifically, as Figure 1 shown, a driving member 6 is provided below the roller bracket 3. In a specific embodiment, the driving member 6 is a servo motor or a motor. As Figure 12 shown, the main transmission wheel 5 is provided with a clamping groove 501. The output shaft of the driving member 6 is fixedly installed in the clamping groove 501. The clamping groove 501 is provided with a plane, which can prevent the main transmission wheel 5 from loosening when the motor rotates and affect the movement stability of the roller bracket 3. As Figure 1 and Figure 2 shown, the installation shell 7 is arranged between the housing 1 and the driving member 6. The installation shell 7 is fixedly snap-connected to the housing 1 through a position and a buckle.

[0056] As Figure 13 shown, the installation shell 7 is provided with a polygonal column 701. The polygonal column 701 faces the placement rack 301. The side wall of the polygonal column 701 is provided with a second recess 702 and an abutting portion 703. The second recess 702 and the abutting portion 703 are arranged alternately. The polygonal column 701 is polygonal. The polygonal setting can have more planes for arranging the second recess 702. In this embodiment, the second recess 702 is arc-shaped. As Figure 15 shown, a third grease storage space 318 is formed between the round hole 317 and the second recess 702, which can dissipate heat when the placement rack 301 rotates around the polygonal column 701. Moreover, the third grease storage space 318 is used to store lubricating grease, which can prevent dry friction of the kinematic pair, make the placement rack 301 rotate more smoothly, and prevent the roller 4 from directly rubbing against the pump pipe 2 due to too large rotation resistance and generating relative sliding.

[0057] In one embodiment, the housing 1 is provided with an upper clamping groove 103, and the mounting housing 7 is provided with a lower clamping groove 704. The upper clamping groove 103 and the lower clamping groove 704 are arranged oppositely, and the pump tube 2 is located between the upper clamping groove 103 and the lower clamping groove 704. Both ends of the pump tube 2 are respectively provided with mounting members 201. The mounting housing 7 is provided with a padding portion 705, and the padding portion 705 is arranged corresponding to the lower clamping groove 704 and is located on one side of the lower clamping groove 704. The upper clamping groove 103 is respectively provided with arc-shaped fixing bars 104, and the mounting member 201 is provided with notches 202 corresponding to the fixing bars 104. The mounting member 201 is located above the padding portion 705, and the fixing bars 104 are respectively located within the notches 202.

[0058] Specifically, as Figure 4 shown, the housing 1 is provided with an upper clamping groove 103. As Figure 13 shown, the mounting housing 7 is provided with a lower clamping groove 704. The pump tube 2 is located between the upper clamping groove 103 and the lower clamping groove 704. As Figure 1 shown, the pump tube 2 is provided with mounting members 201. As Figure 13 shown, the mounting housing 7 is internally provided with a padding portion 705, and the padding portion 705 is arranged corresponding to the lower clamping groove 704. As Figure 4 shown, the upper clamping groove 103 is further provided with fixing bars 104. As Figure 16 shown, the mounting member 201 is provided with notches 202, and the size of the arc-shaped groove 307 corresponds to that of the fixing bar 104. During installation, the mounting member 201 is placed on the padding portion 705, and the fixing bar 104 is located within the notch 202 to fix the mounting member 201. The mounting member 201 is clamped between the housing 1 and the mounting housing 7, which facilitates quick replacement and maintenance.

[0059] In one embodiment, the pump tube 2 includes a water outlet end 203, and a one-way valve member is provided at the water outlet end 203. When the pump tube 2 rebounds, the one-way valve member closes.

[0060] Specifically, the pump tube 2 is provided with a water outlet end 203, and a one-way valve member is arranged at the water outlet end 203. The one-way valve member can be composed of a valve disc and a spring. When the liquid in the pump tube 2 flows forward, the liquid pressure impacts the valve disc and pushes the valve open, and at this time the liquid can pass through. When the liquid stops flowing or flows backward, the spring restores, and the valve disc closes, which can prevent the liquid in the pump tube 2 from flowing back. In addition, the one-way valve member can also be a ball valve type one-way valve.

[0061] The present invention also provides an induction control system for a peristaltic pump, which includes an induction member 10, a control chip 20, and a plurality of magnetic blocks 30; the magnetic blocks 30 are arranged on the roller 4, and the induction member 10 is electrically connected to the control chip 20; the induction member 10 and the control chip 20 are arranged in the housing 1; when the roller 4 rotates, the induction member 10 senses the magnetic field change and converts it into a pulse signal and feeds it back to the control chip 20.

[0062] Specifically, asFigure 17 As shown, the magnetic blocks 30 are respectively fixedly arranged on the rollers 4, while the sensing member 10 and the control chip 20 are respectively arranged on the housing 1, and the sensing member 10 and the control chip 20 are electrically connected. When the roller 4 rotates, the magnetic blocks 30 fixed on the upper cover of the roller 4 rotate accordingly, causing the magnetic field to change periodically in space. After the sensing member 10 detects the change of the magnetic field, it converts it into an electrical signal, that is, a pulse signal. Then the pulse signal is transmitted to the control chip 20. Then the control chip 20 processes the signal, can calculate the rotation speed of the roller 4 or the amount of liquid pumped, and then the control chip 20 controls the rotation speed of the driving member 6 according to the processing result for dynamic adjustment, so as to ensure the stability of liquid transportation in the pump tube 2 and detect whether the roller bracket 3 is operating abnormally.

[0063] More specifically, the magnetic block 30 can be a permanent magnetic block 30. Each roller 4 is provided with 1 or 2 magnetic blocks 30. The installation method can be to embed the inner side of the transmission part 401 and distribute at equal angles, which is convenient for improving the detection accuracy. The sensing member 10 can be a Hall sensor or a magnetoresistive sensor. The sensing member 10 is fixed in the housing 1 and close to the movement track of the magnetic block 30. The control chip 20 can be an MCU. When relative sliding occurs between the roller 4 and the pump tube 2, the Hall sensor sends a pulse signal to the MCU. After the MCU calculates and processes, an abnormal signal is obtained, and then the control driving member 6 stops or adjusts the rotation speed.

[0064] The present invention also provides a roller of a peristaltic pump, wherein a contact layer in contact with the pump tube 2 is provided, and the contact layer is made of a wear-resistant elastic material.

[0065] Specifically, the contact layer can be integrally formed with the roller 4 or fixed in a manner of a hollow cylinder tightened. The thickness is 1.5 - 2.5 mm. When fixed in a tightened manner, the contact layer can be replaced. More specifically, the contact layer can be a polyurethane microporous elastomer or silica gel, which has good resilience and wear resistance, can reduce local stress concentration and reduce wear. When relative sliding occurs between the roller 4 and the pump tube 2, the contact layer can produce elastic deformation to avoid wearing the pump tube 2.

[0066] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, device, article or method including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a process, device, article or method. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the process, device, article or method including the element.

[0067] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present application.

Claims

1. A peristaltic pump, comprising a housing and at least one pump tube, wherein the pump tube is detachably arranged in the housing; characterized in that, Comprising: A roller bracket, which is arranged inside the housing and includes a placement rack and a fixing cover, and the fixing cover is connected to the placement rack; A plurality of rollers, which are respectively located between the placement rack and the fixing cover, and each roller is respectively provided with a transmission part, and the transmission part is integrally formed with the roller; A main transmission wheel, which is located among the rollers and is in transmission connection with the transmission part to form a planetary-like transmission structure; The placement rack is provided with a plurality of placement columns corresponding to the rollers, and the placement columns are respectively provided with a plurality of first recessed parts, and a first oil storage space for heat dissipation and oil storage is formed between the first recessed parts and the rollers; Wherein, the rotation of the main transmission wheel drives the rotation of the roller bracket and periodically squeezes the pump pipe to push the liquid in the pump pipe.

2. The peristaltic pump according to claim 1, characterized in that, The housing is provided with fixing columns and is arranged towards the roller bracket; The fixing cover is provided with a fixing position, and the fixing position is provided with a plurality of arc-shaped grooves; When the fixing column is located within the fixing position, a second oil storage space is formed between the arc-shaped groove and the fixing column.

3. The peristaltic pump according to claim 1, wherein The fixing cover is provided with a plurality of limiting grooves corresponding to the rollers, and the rollers are respectively located within the limiting grooves; Each of the limiting grooves is respectively provided with a limiting column; The rollers are respectively provided with through holes, and the placement columns respectively penetrate through the through holes and are in contact with the limiting columns; An installation groove is arranged inside the housing, the fixing cover is located within the installation groove and rotates within the installation groove; The limiting groove is provided with an opening, and the openings are respectively arranged towards the groove wall of the installation groove.

4. The peristaltic pump according to claim 3, characterized in that, The interior of the placement column is hollow, and the top is provided with a stepped part, the limiting column is provided with a central hole, and the stepped part penetrates through the central hole and abuts against the limiting column.

5. The peristaltic pump according to claim 3, characterized in that, The fixing cover is provided with a protruding column, the protruding column is arranged towards the main transmission wheel and is located among the plurality of rollers; The protruding column is provided with grooves corresponding to the rollers, the grooves are connected to the limiting grooves, and a rotation space is formed between the grooves and the rollers.

6. The peristaltic pump according to claim 1, characterized in that, Comprising a driving part, the main transmission wheel is provided with a clamping groove, and the output shaft of the driving part penetrates through the clamping groove and is fixedly connected to the main transmission wheel; An installation shell is arranged between the housing and the driving part, and the installation shell is in clamping connection with the housing; The installation shell is provided with a polygonal column in a polygonal shape, the polygonal column is provided with a second recessed part and an abutting part, and the second recessed part and the abutting part are arranged alternately; The bottom of the placement rack is provided with a round hole, the polygonal column is located within the round hole, and the abutting part abuts against the inner wall of the round hole; A third oil storage space is formed between the second recessed part and the round hole.

7. The peristaltic pump according to claim 6, characterized in that, The housing is provided with an upper clamping groove, the installation shell is provided with a lower clamping groove, the upper clamping groove and the lower clamping groove are arranged oppositely, and the pump pipe is located between the upper clamping groove and the lower clamping groove; Both ends of the pump pipe are respectively provided with installation parts, the installation shell is provided with a heightening part, the heightening part corresponds to the lower clamping groove and is located on one side of the lower clamping groove; The upper clamping groove is respectively provided with arc-shaped fixing strips, and the installation parts are provided with notches corresponding to the fixing strips; The mounting member is located above the elevation portion, and the fixing bars are respectively located within the notches.

8. The peristaltic pump according to claim 1, characterized in that, The pump pipe includes a water outlet end, and a check valve member is provided at the water outlet end; When the pump pipe rebounds, the check valve member closes.

9. An induction control system for a peristaltic pump according to any one of claims 1-8, characterized in that, It includes an induction member, a control chip, and a plurality of magnetic blocks; the magnetic blocks are arranged on the roller, the induction member is electrically connected to the control chip; the induction member and the control chip are arranged in the housing; When the roller rotates, the induction member senses the magnetic field change and converts it into a pulse signal and feeds it back to the control chip.

10. A roller of the peristaltic pump according to any one of claims 1-8, characterized in that A contact layer in contact with the pump pipe is provided, and the contact layer is made of wear-resistant elastic material.

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