Peristaltic pump with cam shell

Abstract

The invention belongs to the technical field of peristaltic pumps, and particularly relates to a peristaltic pump with a cam shell, the peristaltic pump comprises a protection box, the protection box is of a structure with an opening in the front side and a hollow inside, a box cover is fixed at the opening in the front side of the protection box, a through groove is formed in the box cover, and a first splitter plate is inserted into the through groove in the box cover; through the arrangement of the lower shell and the upper shell, the pump pipes are continuously extruded by utilizing different radiuses of matching surfaces at different positions of the inner walls of the lower shell and the upper shell, so that the purpose of liquid wriggling is achieved, and meanwhile, the shells play an effective protection and synergistic effect on the pump pipes and the two wriggling pieces in the shells; according to the peristaltic pump, the structural stability and high efficiency of the device are improved, the flow conversion mechanism is arranged, the flowing efficiency of liquid in the peristaltic pump is greatly improved, the liquid conveying speed is increased, and the time cost during production or work is saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of peristaltic pumps, and particularly relates to a peristaltic pump with a cam housing. Background Art

[0002] A peristaltic pump, an instrument device, is composed of three parts: a driver, a pump head, and a hose. The fluid is isolated in the pump tube, the pump tube can be quickly replaced, the fluid can flow reversely, and it can run dry. A peristaltic pump is like squeezing a hose filled with fluid with a finger. As the finger slides forward, the fluid in the tube moves forward. A peristaltic pump works on the same principle, except that a roller replaces the finger. The fluid is pumped by alternately squeezing and releasing the elastic delivery hose of the pump. Just like squeezing a hose with two fingers, as the fingers move, a negative pressure is formed in the tube, and the liquid flows accordingly. Such pumps have the advantages of no pollution, strong self-priming ability, high metering accuracy, etc., and are widely used in the field of medical infusion.

[0003] A peristaltic pump forms a "pillow" - shaped fluid in a section of pump tube between two roller shafts. The volume of the "pillow" depends on the inner diameter of the pump tube and the geometric characteristics of the rotor. The flow rate depends on the product of the rotational speed of the pump head, the size of the "pillow", and the number of "pillows" generated per revolution of the rotor. The size of the "pillow" is generally a constant (except when pumping fluids with particularly high viscosity).

[0004] Comparing pumps with the same rotor diameter, a pump that generates a larger "pillow" volume transports a larger volume of fluid per revolution of the rotor, but also has a larger pulsation degree. This is similar to the case of a diaphragm valve. A pump that generates a smaller "pillow" volume transports a smaller volume of fluid per revolution of the rotor; moreover, the small "pillows" formed quickly and continuously make the fluid flow more smoothly.

[0005] In the prior art of peristaltic pump technology, especially infusion pumps in the medical field, finger - type peristaltic pumps are widely used, and their core is that a camshaft drives a slider to squeeze a hose. The advantages of these pumps include small volume, accurate metering, convenient installation, etc. However, the prior art may have problems such as complex assembly, difficult maintenance, inconvenient hose replacement, or inflexible pressure control. For example, Chinese Patent No. CN221482128U discloses a peristaltic pump structure. This patent involves improvements in the pump housing structure and hose installation, indicating that there is still room for improvement in the ease of use and structural simplification of existing pumps. In view of this, we propose a peristaltic pump with a cam housing. Summary of the Invention

[0006] The purpose of the present invention is to provide a peristaltic pump with a cam housing to solve the problems raised in the above - mentioned background art.

[0007] In view of this, the present invention provides a peristaltic pump with a cam housing, including: Protection box, the protection box has a hollow structure with an opening at the front side, a box cover is fixed at the opening of the front side of the protection box, a through groove is provided on the box cover, a flow dividing plate one is inserted and installed in the through groove on the box cover, a flow dividing plate two is arranged on the front side of the flow dividing plate one, two sets of commutation mechanisms arranged in a staggered manner are arranged between the flow dividing plate one and the flow dividing plate two, side blocks are symmetrically arranged on the left and right sides of the flow dividing plate two, a plurality of plugs one evenly distributed are arranged on the inner side wall of the flow dividing plate one, a plug two is arranged at the center of the outer side wall of the flow dividing plate two, and plugs three are symmetrically arranged on the upper and lower sides of the plug two on the outer side wall of the flow dividing plate two, and a sealing ring is sleeved on the plug three; Peristaltic pump mechanism, the peristaltic pump mechanism is arranged in the inner cavity of the protection box, and the peristaltic pump mechanism is composed of a support component, a drive component and a peristaltic component.

[0008] In this technical solution, the commutation mechanism is composed of a water inlet end component and a water outlet end component, and the water inlet end component includes: Water inlet layer one, the water inlet layer one is arranged on the inner side wall of the flow dividing plate one, the water inlet layer one has a V-shaped structure, the water inlet layer one and the flow dividing plate one are integrally formed, a liquid discharge port one and a liquid discharge port two are respectively arranged at the middle part of the water inlet layer one and the end far from the middle part of the flow dividing plate one, a water inlet layer two with the same structure as the water inlet layer one is arranged on the inner side wall of the flow dividing plate two, the water inlet layer two and the flow dividing plate two are integrally formed, and a liquid inlet port one is arranged at the end close to the middle part of the flow dividing plate two on the water inlet layer two.

[0009] In this technical solution, the water outlet end component includes: Water outlet layer one, the water outlet layer one is arranged on the inner side wall of the flow dividing plate one, the water outlet layer one has a Y-shaped structure, the water outlet layer one and the flow dividing plate one are integrally formed, a reflux port one and a reflux port two are respectively arranged at both ends of the water outlet layer one close to the outer edge of the flow dividing plate one, a water outlet layer two with the same structure as the water outlet layer one is arranged on the inner side wall of the flow dividing plate two, the water outlet layer two and the flow dividing plate two are integrally formed, and a liquid discharge port three is arranged at the end close to the middle part of the flow dividing plate two on the water outlet layer two.

[0010] In this technical solution, the plurality of plugs one are respectively arranged in one-to-one correspondence with the liquid discharge port one, the liquid discharge port two, the reflux port one and the reflux port two on the flow dividing plate one, the plug two is arranged in correspondence with the two liquid inlet ports one on the flow dividing plate two, the two plugs three are respectively arranged in correspondence with the two liquid discharge ports three on the flow dividing plate two, the water inlet layer one on the flow dividing plate one and the water inlet layer two on the flow dividing plate two form a closed channel when the flow dividing plate one and the flow dividing plate two are in a fitting state, and the water outlet layer one on the flow dividing plate one and the water outlet layer two on the flow dividing plate two form a closed channel when the flow dividing plate one and the flow dividing plate two are in a fitting state.

[0011] In this technical solution, threaded holes are provided at positions corresponding to the two side blocks on the box cover, and the second flow dividing plate is fixedly connected to the box cover by bolts.

[0012] In this technical solution, the support assembly includes: A support base, which is arranged in the inner cavity of the protection box. The support base has a top opening and a hollow interior. An annular fixing ring is arranged in the inner cavity of the support base. A plurality of reinforcing ribs fixed to the inner wall of the support base are fixed on the circumferential side of the fixing ring. An upper cover is snap-fitted and fixed at the top opening of the support base. A circular hole consistent with the inner diameter of the fixing ring is provided on the upper cover. A bottom cover is snap-fitted and fixed directly below the support base.

[0013] In this technical solution, the peristaltic assembly includes: A lower housing, which is inserted and installed in the fixing ring. An upper housing is arranged directly above the lower housing. U-shaped placement grooves are symmetrically provided on the front sides of both the lower housing and the upper housing. Grooves are provided on the inner walls of the placement grooves. Clamps are inserted and installed in the grooves. Two perpendicularly distributed pump tubes are movably installed between the two clamps on the lower housing and the two clamps on the upper housing.

[0014] In this technical solution, the peristaltic assembly further includes: A bearing groove, which is provided on the inner bottom surface of the lower housing. A positioning column is fixed on the inner top surface of the upper housing. Connecting block one is symmetrically arranged on the lower housing. Connecting block two is arranged at a position corresponding to the two connecting block ones on the upper housing. Connecting block one and the lower housing are of an integrally formed structure. Connecting block two and the upper housing are of an integrally formed structure. Connecting block one and the corresponding connecting block two are inserted and matched. A plurality of evenly distributed elastic blocks are arranged at the edge position of the upper surface of the lower housing. A plurality of evenly distributed clamping blocks are arranged at the edge position of the lower surface of the upper housing. The plurality of elastic blocks and the plurality of clamping blocks correspond one by one and are snap-fitted. A first roller is rotatably installed in the lower housing. First rolling rollers are symmetrically rotatably installed on the first roller. A first clamping ring is fixedly installed at the bottom of the first roller. A first snap spring is meshed and connected in the first clamping ring. A driving rod is coaxially connected to the first snap spring. A ball bearing is coaxially connected to the bottom end of the driving rod, and the ball bearing is fixedly installed in the inner cavity of the bearing groove. A second roller is rotatably installed in the upper housing. Second rolling rollers are symmetrically rotatably installed on the second roller. A second clamping ring is fixedly connected to the top end of the second roller. A second snap spring is meshed and connected in the second clamping ring. A driven rod is coaxially connected to the second snap spring, and the driven rod is inserted and matched with the driving rod.

[0015] In this technical solution, the drive assembly includes: The motor, the motor is plugged and installed, a receiving groove for accommodating the embedding of the output end of the motor is opened on the bottom cover, and the output shaft of the motor passes through the support seat and extends into the lower shell to be coaxially connected with the driving rod.

[0016] In this technical solution, a plurality of positioning blocks are fixed on the inner wall of the fixing ring and are distributed at equal intervals in a circumferential manner. A plurality of positioning grooves matching the positioning blocks are opened on the lower surface of the lower shell. The positioning blocks are inserted and matched with the corresponding positioning grooves. A limiting block is arranged on the side wall of the motor, and a limiting protrusion is arranged on the side wall of the support seat. The limiting block is inserted and matched with the limiting protrusion. Connecting pipes are fixed at the corresponding positions on the inner top surface of the protection box and opposite to the two connecting blocks II. A positioning bolt is bolted in the connecting pipe. The protection box fixes the connecting pipe and the corresponding connecting block II through two positioning bolts. A plurality of uniformly distributed heat dissipation holes are opened at a position near the lower part of the rear side wall of the protection box.

[0017] The beneficial effects of the present invention are: 1. For the peristaltic pump with a cam housing, by setting up a commutation mechanism and using the shunt pipelines formed by the first water inlet layer and the second water inlet layer, and the first water outlet layer and the second water outlet layer to shunt the liquid twice, the flow efficiency of the liquid in the peristaltic pump is greatly improved, the speed of liquid transportation is increased, and the time cost during production or work is saved.

[0018] 2. For the peristaltic pump with a cam housing, by setting up the lower shell and the upper shell, and using the different radii of the mating surfaces at different positions on the inner walls of the lower shell and the upper shell to continuously squeeze the pump tube, so as to achieve the purpose of peristalsis of the liquid. By setting up the lower shell and the upper shell, effective protection and coordination are provided for the multiple pump tubes and the two peristaltic parts located inside, and the structural stability and efficiency of the present device are improved.

[0019] 3. For the peristaltic pump with a cam housing, by setting up a driving component and using the motor to provide power, through the constraint and limit cooperation between the first snap ring and the first circlip and between the second snap ring and the second circlip, the peristaltic components in the upper and lower parts can be adjusted in the liquid direction as needed, avoiding the adverse effect that in the traditional peristaltic pump during multi-pipeline peristaltic transportation, when it is necessary to adjust the liquid inlet and outlet directions, the raw material inlet and outlet pipes must be re-plugged, and greatly improving the transportation capacity and transportation effect of the present device. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is an exploded view of the box cover, the first shunt plate and the second shunt plate of the present invention; Figure 3 It is a schematic diagram of the inner structure of the first shunt plate and the second shunt plate of the present invention; Figure 4 Schematic diagram of the structure outside the first flow dividing plate and the second flow dividing plate in the present invention; Figure 5 Schematic diagram of the internal structure of the protection box in the present invention; Figure 6 Schematic diagram of the structure of the peristaltic pump mechanism in the present invention; Figure 7 Schematic diagram of the structure of the support assembly in the present invention; Figure 8 Exploded view of the support assembly in the present invention; Figure 9 Exploded view of the upper peristaltic component and the lower peristaltic component in the present invention; Figure 10 Explosion diagram of the lower peristaltic component in the present invention; Figure 11 Explosion diagram of the upper peristaltic component in the present invention; Figure 12 Schematic diagram of the internal cavity structure of the lower housing and the upper housing in the present invention; Figure 13 Schematic diagram of the structure of the lower drive assembly in the present invention; Figure 14 Schematic diagram of the structure of the upper drive assembly in the present invention; Figure 15 Exploded view of the driving rod and the driven rod in the present invention.

[0021] The markings in the figure are shown as: 1. Protection box; 2. Box cover; 3. First flow dividing plate; 4. Second flow dividing plate; 5. First water inlet layer; 6. First water outlet layer; 7. Second water inlet layer; 8. Second water outlet layer; 9. First liquid discharge port; 10. Second liquid discharge port; 11. First liquid inlet port; 12. First return port; 13. Second return port; 14. Third liquid discharge port; 15. Side block; 16. First plug; 17. Second plug; 18. Third plug; 19. Sealing ring; 20. Support seat; 21. Bottom cover; 22. Motor; 23. Reinforcing rib; 24. Upper cover; 25. Fixed ring; 26. Lower housing; 27. Upper housing; 28. Placing groove; 29. Groove; 30. Clamp; 31. Pump tube; 32. Bearing groove; 33. Positioning column; 34. First connecting block; 35. Second connecting block; 36. Elastic block; 37. Clamping block; 38. First roller; 39. First rolling roller; 40. First snap ring; 41. First circlip; 42. Driving rod; 43. Ball bearing; 44. Second roller; 45. Second rolling roller; 46. Second snap ring; 47. Second circlip; 48. Driven rod; 49. Positioning block; 50. Positioning groove; 51. Limiting block; 52. Limiting protrusion; 53. Connecting pipe; 54. Positioning bolt; 55. Heat dissipation hole. Detailed implementation manners

[0022] The following will further elaborate on this application in conjunction with the attached Figure 1 - Figure 15 drawings.

[0023] In this application, terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements, or components must have a specific orientation or be constructed and operated in a specific orientation.

[0024] Embodiment 1: This embodiment provides a peristaltic pump with a cam housing, including: A protection box 1, the protection box 1 has a front-side opening and a hollow interior structure. A box cover 2 is fixed at the front-side opening of the protection box 1. A through groove is provided on the box cover 2. A first flow dividing plate 3 is inserted and installed in the through groove on the box cover 2. A second flow dividing plate 4 is arranged on the front side of the first flow dividing plate 3. Two sets of commutation mechanisms arranged in a staggered manner are provided between the first flow dividing plate 3 and the second flow dividing plate 4. Side blocks 15 are symmetrically arranged on the left and right sides of the second flow dividing plate 4. A plurality of evenly distributed first stoppers 16 are arranged on the inner side wall of the first flow dividing plate 3. A second stopper 17 is arranged at the center of the outer side wall of the second flow dividing plate 4. Third stoppers 18 are symmetrically arranged on the upper and lower sides of the second stopper 17 on the outer side wall of the second flow dividing plate 4. Sealing rings 19 are sleeved on the third stoppers 18; A peristaltic pump mechanism, which is arranged in the inner cavity of the protection box 1 and is composed of a support component, a drive component, and a peristaltic component.

[0025] Embodiment 2: This embodiment provides a peristaltic pump with a cam housing. In addition to including the technical solutions of the above embodiment, it also has the following technical features. The commutation mechanism is composed of a water inlet end component and a water outlet end component. The water inlet end component includes: A first water inlet layer 5, the first water inlet layer 5 is arranged on the inner side wall of the first flow dividing plate 3, the first water inlet layer 5 has a V-shaped structure, the first water inlet layer 5 and the first flow dividing plate 3 are integrally formed, a first liquid discharge port 9 and a second liquid discharge port 10 are respectively opened at the middle part of the first water inlet layer 5 and the end far from the middle part of the first flow dividing plate 3. A second water inlet layer 7 with the same structure as the first water inlet layer 5 is arranged on the inner side wall of the second flow dividing plate 4. The second water inlet layer 7 and the second flow dividing plate 4 are integrally formed. A first liquid inlet port 11 is opened at the end of the second water inlet layer 7 close to the middle part of the second flow dividing plate 4; In this embodiment, the water outlet end component includes: The first water outlet layer 6 is arranged on the inner side wall of the first flow dividing plate 3. The first water outlet layer 6 has a Y-shaped structure. The first water outlet layer 6 and the first flow dividing plate 3 are integrally formed. At both ends of the first water outlet layer 6 near the outer edge of the first flow dividing plate 3, a first return port 12 and a second return port 13 are respectively opened. On the inner side wall of the second flow dividing plate 4, there is a second water outlet layer 8 with the same structure as the first water outlet layer 6. The second water outlet layer 8 and the second flow dividing plate 4 are integrally formed. At one end of the second water outlet layer 8 near the middle of the second flow dividing plate 4, a third liquid discharge port 14 is opened. In this embodiment, a plurality of first plugs 16 are respectively arranged in one-to-one correspondence with the first liquid discharge port 9, the second liquid discharge port 10, the first return port 12, and the second return port 13 on the first flow dividing plate 3. The second plug 17 is arranged in correspondence with the two first liquid inlet ports 11 on the second flow dividing plate 4. Two third plugs 18 are respectively arranged in correspondence with the two third liquid discharge ports 14 on the second flow dividing plate 4. The first water inlet layer 5 on the first flow dividing plate 3 and the second water inlet layer 7 on the second flow dividing plate 4 form a closed channel when the first flow dividing plate 3 and the second flow dividing plate 4 are in a fitting state. The first water outlet layer 6 on the first flow dividing plate 3 and the second water outlet layer 8 on the second flow dividing plate 4 form a closed channel when the first flow dividing plate 3 and the second flow dividing plate 4 are in a fitting state.

[0026] Among them, during installation, a plurality of first plugs 16 on the first flow dividing plate 3 are respectively aligned with and inserted into the eight joints of the pump tube 31 of the second flow dividing plate 4. Then, the first flow dividing plate 3 is inserted into the through groove on the box cover 2. Then, the second flow dividing plate 4 is aligned with the first flow dividing plate 3, and the second flow dividing plate 4 and the box cover 2 are fixed with bolts. At this time, the first flow dividing plate 3 is clamped between the box cover 2 and the second flow dividing plate 4. The inner side wall of the through groove between the box covers 2 is inclined, presenting a structure with a small mouth facing inwards and a large mouth facing outwards, so that the first flow dividing plate 3 can be perfectly embedded in the through groove on the box cover 2 and will not slide out from the other side of the through groove. At the same time, the side wall of the first flow dividing plate 3 matches the structure of the through groove on the box cover 2. When the second flow dividing plate 4 is fixed, a firmly fixed connection relationship will also be formed between the first flow dividing plate 3 and the second flow dividing plate 4. At this time, the two first water inlet layers 5 in the first flow dividing plate 3 and the two second water inlet layers 7 in the second flow dividing plate 4 are combined into one, and a pipe-shaped structure sufficient for water flow is formed. The same is true for the two first water outlet layers 6 in the first flow dividing plate 3 and the two second water outlet layers 8 in the second flow dividing plate 4. The first flow dividing plate 3 and the second flow dividing plate 4 mainly play the role of flow division and flow combination. While improving the working efficiency of the peristaltic pump, the clutter of the number of external pipes is also reduced, and the overall aesthetics and practicality are greatly improved. During specific use, simply connect the external water inlet pipe to the plug two 17 on the outer side wall of the flow dividing plate two 4. Under the action of the plug two 17, the liquid is divided through the two liquid inlet ports one 11 and enters the two water inlet layers two 7 between the flow dividing plate one 3 and the flow dividing plate two 4. Then, it is divided again through the liquid discharge port one 9 and the liquid discharge port two 10 on a single water inlet layer two 7, and respectively enters the four pump tubes 31 in the peristaltic pump corresponding to the multiple plugs one 16 on the inner side of the flow dividing plate one 3. Among them, the liquid in the upper water inlet layer one 5 enters from the right ends of the upper two pump tubes 31 of the pump tube 31 and is discharged from the left ends. Then, it enters the inner cavity of the water outlet layer one 6 through the return port one 12 and the return port two 13, and then is output from the plug three 18 on the outer side wall of the flow dividing plate two 4 through the liquid discharge port three 14 on the water outlet layer two 8, forming a perfect counterclockwise closed loop; the liquid in the lower water inlet layer one 5 is the same, but the liquid enters from the left ends of the lower two pump tubes 31 and is discharged from the right ends, showing a clockwise closed-loop movement as a whole. However, ultimately, both are discharged through the two plugs three 18; in addition, the plug three 18 can also be used as the liquid input end, and this device has no excessive requirements and limitations on it.

[0027] By setting up the flow conversion mechanism, the liquid is divided twice by using the flow dividing pipelines formed by the water inlet layer one 5 and the water inlet layer two 7, and the water outlet layer one 6 and the water outlet layer two 8, greatly improving the flow efficiency of the liquid in the peristaltic pump, increasing the speed of liquid transportation, saving the time cost during production or work. By arranging the water inlet layer and the water outlet layer in an interleaved manner, the liquid forms a closed-loop flow in the pump, reducing energy loss, improving flow stability, eliminating the need for additional pipeline connections, simplifying the external pipeline layout, and reducing the failure risk caused by messy pipelines.

[0028] Embodiment 3: This embodiment provides a peristaltic pump with a cam housing. In addition to including the technical solutions of the above embodiments, it also has the following technical features. Threaded holes are opened at positions corresponding to the two side blocks 15 on the box cover 2, and the flow dividing plate two 4 is fixedly connected to the box cover 2 by bolts.

[0029] Among them, the operator can disassemble and clean the flow dividing plate one 3 and the flow dividing plate two 4 by removing the bolts between the flow dividing plate two 4 and the box cover 2, so as to ensure the cleanliness of the inner cavity environment of the flow dividing pipeline and prevent blockage.

[0030] Embodiment 4: This embodiment provides a peristaltic pump with a cam housing. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The support assembly includes: The support base 20 is arranged in the inner cavity of the protection box 1. The support base 20 has a top-opening and internally hollow structure. An annular fixing ring 25 is arranged in the inner cavity of the support base 20. A plurality of reinforcing ribs 23 fixed to the inner wall of the support base 20 are fixed on the circumferential side of the fixing ring 25. An upper cover 24 is snap-fitted and fixed at the top-opening of the support base 20. A circular hole with the same inner diameter as the fixing ring 25 is opened on the upper cover 24. A bottom cover 21 is snap-fitted and fixed directly below the support base 20.

[0031] Among them, with reference to Figure 8 , in the support assembly, the support base 20 and the pump tube 31 mainly provide support for the whole peristaltic pump. The multiple reinforcing ribs 23 in the inner cavity of the motor 22 effectively ensure the overall strength of the support base 20, preventing the peristaltic assembly above from shaking within the fixing ring 25 during operation. The lower part of the support base 20 is a hollow cylindrical structure and is adapted to the bottom cover 21, so as to cooperate with the bottom cover 21 to completely cover and install the motor 22, reducing the adverse effects on the whole device caused by the vibration of the motor 22 during operation.

[0032] Embodiment 5: This embodiment provides a peristaltic pump with a cam housing. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The peristaltic assembly includes: The lower housing 26 is inserted and installed in the fixing ring 25. An upper housing 27 is arranged directly above the lower housing 26. U-shaped placement grooves 28 are symmetrically opened on the front sides of both the lower housing 26 and the upper housing 27. Grooves 29 are opened on the inner walls of the placement grooves 28. Clamps 30 are inserted and installed in the grooves 29. Two perpendicularly distributed pump tubes 31 are movably installed between the two clamps 30 on the lower housing 26 and the two clamps 30 on the upper housing 27 respectively; In this embodiment, the peristaltic assembly further includes: The bearing groove 32 is formed on the inner bottom surface of the lower housing 26. A positioning post 33 is fixed on the inner top surface of the upper housing 27. Two connecting blocks 34 are symmetrically arranged on the lower housing 26. Connecting blocks 35 are arranged at positions corresponding to the two connecting blocks 34 on the upper housing 27. The connecting block 34 and the lower housing 26 are of an integrally formed structure. The connecting block 35 and the upper housing 27 are of an integrally formed structure. The connecting block 34 is inserted and matched with the corresponding connecting block 35. A plurality of uniformly distributed elastic blocks 36 are arranged at the edge position of the upper surface of the lower housing 26. A plurality of uniformly distributed clamping blocks 37 are arranged at the edge position of the lower surface of the upper housing 27. The plurality of elastic blocks 36 and the plurality of clamping blocks 37 are in one-to-one correspondence and are snap-fitted. A roller 38 is rotatably installed in the lower housing 26. Two rollers 39 are symmetrically and rotatably installed on the roller 38. A retaining ring 40 is fixedly installed at the bottom of the roller 38. A retaining spring 41 is meshed and connected in the retaining ring 40. A driving rod 42 is coaxially connected to the retaining spring 41. The bottom end of the driving rod 42 is coaxially connected to a ball bearing 43, and the ball bearing 43 is fixedly installed in the inner cavity of the bearing groove 32. A roller 44 is rotatably installed in the upper housing 27. Two rollers 45 are symmetrically and rotatably installed on the roller 44. The top end of the roller 44 is fixedly connected to a retaining ring 46. A retaining spring 47 is meshed and connected in the retaining ring 46. The retaining spring 47 is coaxially connected to a driven rod 48, and the driven rod 48 is inserted and matched with the driving rod 42.

[0033] Among them, referring to the attached Figures 9 - 15 , the four pump pipes 31 are respectively squeezed by the roller 38 and the roller 44 at positions close to the inner side walls of the lower housing 26 and the upper housing 27. When the roller 38 or the roller 44 rotates, the rollers 39 and 45 on both sides thereof will also perform a revolution motion. When the roller 39 or the roller 45 contacts the pump pipe 31, it will form a squeeze on the pump pipe 31 with the inner wall of the housing, so as to achieve the effect of liquid peristalsis. Referring to the attached Figure 12 , transition sections are arranged on the circumferential side walls of the lower housing 26 and the upper housing 27, which is convenient for the roller 39 or the roller 45 to cut into the side wall of the pump pipe 31 during rotation and squeeze the pump pipe 31. The radius of the housing mating surface on the circumferential side wall on the side away from the groove 29 is larger. By increasing the clamping force, when the roller 39 or the roller 45 rotates to this position, the pressure achieved by the pump body can be increased. When the roller 39 or the roller 45 rotates to a state parallel to the groove 29, the above state reaches the limit state. At this time, the clamping force on the pump pipe 31 is the largest, and the liquid that has entered the front side of the liquid flow direction is squeezed and can be quickly pushed forward. When the roller 39 or the roller 45 rotates to a state perpendicular to the groove 29, the clamping force on the pump pipe 31 is the smallest at this time, and the liquid at the output end can enter the rear section position. At this time, the rotational resistance of the pump is the smallest.

[0034] By setting the lower housing 26 and the upper housing 27, and taking advantage of the different radii of the mating surfaces at different positions on the inner walls of the lower housing 26 and the upper housing 27, continuous extrusion of the pump tube 31 is achieved, thereby achieving the purpose of peristaltic movement of the liquid. By setting the lower housing 26 and the upper housing 27, effective protection and coordination are provided for the multiple pump tubes 31 and the two peristaltic members located inside them, enhancing the structural stability and efficiency of the device.

[0035] The commutation mechanism works in synergy with the upper housing 27 and the lower housing 26. The liquid after being split by the commutation mechanism enters the cam housing through the pump tube, and the housing squeezes and pushes the liquid to be discharged through the commutation mechanism. The multiple split liquid streams are synchronously squeezed by the housing. The closed-loop design of the commutation mechanism and the housing extrusion form a "pressure linkage". When the pressure of a certain section of the pump tube is abnormal, the other flow channels can balance the pressure to avoid the risk of pipe bursting.

[0036] Embodiment 6: This embodiment provides a peristaltic pump with a cam housing. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The drive assembly includes: A motor 22 is inserted and installed on the motor 22. A receiving groove for accommodating the output end of the motor 22 to be embedded is provided on the bottom cover 21. The output shaft of the motor 22 passes through the support seat 20 and extends into the lower housing 26 to be coaxially connected with the driving rod 42.

[0037] Among them, in order to make the peristaltic components on both sides above rotate to achieve the peristaltic effect of the liquid in the pump tube 31, the motor 22 is started. The output shaft of the motor 22 rotates and drives the driving rod 42 to rotate. At this time, the first snap ring 41 and the driven rod 48 both rotate in the same direction under the action of the driving rod 42. Due to the different limiting directions of the elastic snap strips on the first snap ring 41 and the second snap ring 47 and the first retaining ring 40 and the second retaining ring 46, when the output shaft of the motor 22 rotates clockwise, the lower first snap ring 41 will not be constrained and limited with the first retaining ring 40 at this time, that is, the first retaining ring 40 cannot obtain sufficient driving force through the rotation of the first snap ring 41 at this time. However, the upper second snap ring 47 cooperates with the second retaining ring 46, so that when the second snap ring 47 rotates, the second retaining ring 46 will also rotate in the inner cavity of the upper housing 27. At this time, the upper half of the peristaltic component continues to work. When the output shaft of the motor 22 rotates counterclockwise, the lower half of the peristaltic component works.

[0038] By setting the drive assembly, using the motor 22 to provide power, through the constraint and limit cooperation between the first retaining ring 40 and the first snap ring 41 and between the second retaining ring 46 and the second snap ring 47, the peristaltic components in the upper and lower parts can be adjusted in the liquid direction as needed, avoiding the adverse effect that in the traditional peristaltic pump for multi-pipeline peristaltic transportation, when it is necessary to adjust the liquid inlet and outlet directions, the raw material inlet and outlet pipes must be re-plugged, greatly enhancing the conveying capacity and conveying effect of the device.

[0039] The driving component and the cam housing cooperate with each other. The driving component controls the rotation of the first roller 38 and the second roller 44 inside the housing through the cooperation mechanism of the first snap ring 40, the second snap ring 46, the first circlip 41 and the second circlip 47, realizing the adjustment of the extrusion frequency and direction of the pump tube. The forward and reverse rotation of the motor 22 is precisely matched with the extrusion direction of the housing, and the liquid delivery direction can be switched as needed without stopping for reorganization, improving production continuity. The "unidirectional drive" characteristic of the driving component is combined with the extrusion radius difference of the housing, controlling the liquid delivery pressure fluctuation range within ±5%, meeting the requirements of high-precision scenarios.

[0040] Embodiment 7: This embodiment provides a peristaltic pump with a cam housing. In addition to including the technical solutions of the above embodiments, it also has the following technical features. A plurality of positioning blocks 49 are fixedly arranged on the inner wall of the fixing ring 25 at equal circumferential intervals. A plurality of positioning grooves 50 matching the positioning blocks 49 are formed on the lower surface of the lower housing 26, and the positioning blocks 49 are inserted and matched with the corresponding positioning grooves 50.

[0041] Among them, when inserting, it is necessary to ensure that the inlet and outlet ends of multiple pump tubes 31 are close to the side of the through groove on the box cover 2.

[0042] By setting the positioning blocks 49 and the positioning grooves 50, the lower housing 26 will not rotate on the support component, improving the structural stability of the device.

[0043] Embodiment 8: This embodiment provides a peristaltic pump with a cam housing. In addition to including the technical solutions of the above embodiments, it also has the following technical features. A limiting block 51 is arranged on the side wall of the motor 22, and a limiting protrusion 52 is arranged on the side wall of the support seat 20. The limiting block 51 is inserted and matched with the limiting protrusion 52.

[0044] Among them, a small round hole is formed in the limiting block 51, so that when the support seat 20 is closed downward with the bottom cover 21, the limiting protrusion 52 can just be inserted into the small round hole on the limiting block 51.

[0045] By setting the limiting block 51 and the limiting protrusion 52, the stability of the motor 22 after being installed in the inner cavity of the bottom cover 21 is improved.

[0046] Embodiment 9: This embodiment provides a peristaltic pump with a cam housing. In addition to including the technical solutions of the above embodiments, it also has the following technical features. Connecting pipes 53 are fixedly arranged at the corresponding positions of the inner top surface of the protection box 1 and the two second connecting blocks 35. A positioning bolt 54 is bolted in the connecting pipe 53, and the protection box 1 fixes the connecting pipe 53 to the corresponding second connecting block 35 through two positioning bolts 54.

[0047] During installation, the two connecting blocks 35 on the upper shell 27 are aligned with the connecting pipes 53 at the upper part of the inner cavity of the protection box 1 respectively, and then tightened with the positioning bolts 54.

[0048] By providing the connecting pipe 53 and the positioning bolt 54 , the peristaltic pump mechanism can be stably fixed in the inner cavity of the protection box 1 .

[0049] Embodiment 10: This embodiment provides a peristaltic pump with a cam housing. In addition to the technical solutions of the above embodiments, it also has the following technical features: a plurality of evenly distributed heat dissipation holes 55 are provided on the rear side wall of the protective box 1 near the lower position.

[0050] Among them, by providing the heat dissipation holes 55, the inner cavity of the protection box 1 can exchange air with the external environment, reducing the possibility of heat accumulation generated by the components inside the protection box 1 during operation. The commutation mechanism shunts → the drive component controls the extrusion → the cam housing performs creeping → the support component ensures stability, forming a closed-loop system, and through the intelligent coordination of commutation and drive, the "fault self-switching" function is realized (automatically switching to other flow channels when a flow channel fails).

[0051] Working principle: insert multiple external hoses into the plug 2 17 and the two plugs 3 18 respectively, one of the external hoses can be used as the liquid input end, and the other as the liquid output end. When in use, start the motor 22, and the motor 22 is driven through the active rod 42 and the driven rod 48, so that the retaining spring 1 41 and the retaining spring 2 47 rotate, and the two respectively realize the rotation of the upper and lower parts of the peristaltic assembly through the constraint cooperation with the retaining ring 1 40 and the retaining ring 2 46; when the rotating shaft of the motor 22 rotates clockwise, the upper peristaltic assembly starts to work, and the rotating shaft rotates clockwise. Roller 2 44 rotates under the action of clamping ring 2 46, and drives roller 2 45 to rotate in the inner cavity of upper shell 27. When roller 2 45 gradually rotates to be parallel to connecting block 2 35, the clamping force of roller 2 45 and the compression section of the inner wall of upper shell 27 gradually increases, and a gradually increasing squeezing force is generated on pump tube 31, so that the liquid in pump tube 31 can continuously creep forward under the push of roller 2 45, thereby realizing the delivery of liquid. When the rotating shaft of motor 22 rotates counterclockwise, the principle is the same as above, and at this time the creeping component below works.

[0052] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A peristaltic pump with a cam housing, characterized in that, Including: A protection box (1), the protection box (1) has a hollow structure with an opening at the front side. A box cover (2) is fixed at the opening of the front side of the protection box (1). A through groove is provided on the box cover (2). A first flow dividing plate (3) is inserted and installed in the through groove on the box cover (2). A second flow dividing plate (4) is arranged on the front side of the first flow dividing plate (3). Two sets of commutation mechanisms arranged in a staggered manner are provided between the first flow dividing plate (3) and the second flow dividing plate (4). Side blocks (15) are symmetrically arranged on the left and right sides of the second flow dividing plate (4). A plurality of evenly distributed first plugs (16) are arranged on the inner side wall of the first flow dividing plate (3). A second plug (17) is arranged at the center of the outer side wall of the second flow dividing plate (4). Third plugs (18) are symmetrically arranged on the upper and lower sides of the second plug (17) on the outer side wall of the second flow dividing plate (4). A sealing ring (19) is sleeved on the third plug (18); A peristaltic pump mechanism, the peristaltic pump mechanism is arranged in the inner cavity of the protection box (1), and the peristaltic pump mechanism is composed of a support component, a driving component and a peristaltic component.

2. The peristaltic pump with a cam housing according to claim 1, characterized in that, The commutation mechanism is composed of a water inlet end component and a water outlet end component. The water inlet end component includes: A first water inlet layer (5), the first water inlet layer (5) is arranged on the inner side wall of the first flow dividing plate (3). The first water inlet layer (5) has a V-shaped structure. The first water inlet layer (5) and the first flow dividing plate (3) are integrally formed. A first liquid discharge port (9) and a second liquid discharge port (10) are respectively opened at the middle part of the first water inlet layer (5) and the end far from the middle part of the first flow dividing plate (3). A second water inlet layer (7) with the same structure as the first water inlet layer (5) is arranged on the inner side wall of the second flow dividing plate (4). The second water inlet layer (7) and the second flow dividing plate (4) are integrally formed. A first liquid inlet port (11) is opened at the end of the second water inlet layer (7) close to the middle part of the second flow dividing plate (4).

3. The peristaltic pump with a cam housing according to claim 2, characterized in that, The water outlet end component includes: A first water outlet layer (6), the first water outlet layer (6) is arranged on the inner side wall of the first flow dividing plate (3). The first water outlet layer (6) has a Y-shaped structure. The first water outlet layer (6) and the first flow dividing plate (3) are integrally formed. A first return port (12) and a second return port (13) are respectively opened at both ends of the first water outlet layer (6) close to the outer edge of the first flow dividing plate (3). A second water outlet layer (8) with the same structure as the first water outlet layer (6) is arranged on the inner side wall of the second flow dividing plate (4). The second water outlet layer (8) and the second flow dividing plate (4) are integrally formed. A third liquid discharge port (14) is opened at the end of the second water outlet layer (8) close to the middle part of the second flow dividing plate (4).

4. A peristaltic pump having a cam housing according to claim 3, characterized in that, A plurality of the first stoppers (16) are respectively arranged in one-to-one correspondence with a first liquid discharge port (9), a second liquid discharge port (10), a first reflux port (12), and a second reflux port (13) on the first flow dividing plate (3). The second stopper (17) is arranged corresponding to two first liquid inlet ports (11) on the second flow dividing plate (4). Two of the third stoppers (18) are respectively arranged corresponding to two third liquid discharge ports (14) on the second flow dividing plate (4). An upper water inlet layer (5) on the first flow dividing plate (3) and an upper water inlet layer (7) on the second flow dividing plate (4) form a sealed channel when the first flow dividing plate (3) and the second flow dividing plate (4) are in a fitting state. A lower water outlet layer (6) on the first flow dividing plate (3) and a lower water outlet layer (8) on the second flow dividing plate (4) form a sealed channel when the first flow dividing plate (3) and the second flow dividing plate (4) are in a fitting state.

5. A peristaltic pump having a cam housing according to claim 1, characterized in that, Threaded holes are provided at positions corresponding to the two side blocks (15) on the box cover (2). The second flow dividing plate (4) is fixedly connected to the box cover (2) by bolts.

6. A peristaltic pump having a cam housing according to claim 1, wherein, The support assembly includes: A support base (20), the support base (20) is arranged in the inner cavity of the protection box (1), the support base (20) has a top opening and a hollow interior structure. An annular fixing ring (25) is arranged in the inner cavity of the support base (20). A plurality of reinforcing ribs (23) fixed to the inner wall of the support base (20) are fixed to the circumferential side of the fixing ring (25). An upper cover (24) is snap-fitted and fixed at the top opening of the support base (20). A circular hole with the same inner diameter as the fixing ring (25) is provided on the upper cover (24). A bottom cover (21) is snap-fitted and fixed directly below the support base (20).

7. A peristaltic pump having a cam housing according to claim 6, characterized in that, The peristaltic assembly includes: A lower housing (26), the lower housing (26) is inserted and installed in the fixing ring (25). An upper housing (27) is arranged directly above the lower housing (26). U-shaped placement grooves (28) are symmetrically provided on the front sides of both the lower housing (26) and the upper housing (27). Grooves (29) are provided on the inner walls of the placement grooves (28). Clamps (30) are inserted and installed in the grooves (29). Two perpendicularly distributed pump tubes (31) are movably installed between the two clamps (30) on the lower housing (26) and the two clamps (30) on the upper housing (27).

8. A peristaltic pump having a cam housing according to claim 7, characterized in that, The peristaltic assembly further includes: Bearing groove (32), the bearing groove (32) is formed on the inner bottom surface of the lower housing (26), a positioning post (33) is fixed on the inner top surface of the upper housing (27), two connecting blocks one (34) are symmetrically arranged on the lower housing (26), and two connecting blocks two (35) are arranged at positions corresponding to the two connecting blocks one (34) on the upper housing (27). The connecting block one (34) and the lower housing (26) are of an integrally formed structure, the connecting block two (35) and the upper housing (27) are of an integrally formed structure, the connecting block one (34) is in plug-in fit with the corresponding connecting block two (35). A plurality of evenly distributed elastic blocks (36) are arranged at the edge position of the upper surface of the lower housing (26), and a plurality of evenly distributed clamping blocks (37) are arranged at the edge position of the lower surface of the upper housing (27). The plurality of elastic blocks (36) and the plurality of clamping blocks (37) are in one-to-one correspondence and are snap-fitted. A roller one (38) is rotatably installed in the lower housing (26), two rollers one (39) are symmetrically and rotatably installed on the roller one (38), a retaining ring one (40) is fixedly installed at the bottom of the roller one (38), a snap spring one (41) is meshed and connected in the retaining ring one (40), a driving rod (42) is coaxially connected to the snap spring one (41), the bottom end of the driving rod (42) is coaxially connected to a ball bearing (43), and the ball bearing (43) is fixedly installed in the inner cavity of the bearing groove (32). A roller two (44) is rotatably installed in the upper housing (27), two rollers two (45) are symmetrically and rotatably installed on the roller two (44), a retaining ring two (46) is fixedly connected to the top end of the roller two (44), a snap spring two (47) is meshed and connected in the retaining ring two (46), a driven rod (48) is coaxially connected to the snap spring two (47), and the driven rod (48) is in plug-in fit with the driving rod (42).

9. A peristaltic pump having a cam housing according to claim 8, characterized in that, The driving assembly includes: A motor (22), the motor (22) is plugged and installed, a receiving groove for receiving the output end of the motor (22) to be embedded is formed on the bottom cover (21), and the output shaft of the motor (22) passes through the support seat (20) and extends into the lower housing (26) to be coaxially connected to the driving rod (42).

10. A peristaltic pump having a cam housing according to claim 9, characterized in that, A plurality of positioning blocks (49) evenly distributed at equal intervals in a circumferential direction are fixed to the inner wall of the fixing ring (25). A plurality of positioning grooves (50) matching the positioning blocks (49) are formed in the lower surface of the lower housing (26). The positioning blocks (49) are inserted and matched with the corresponding positioning grooves (50). A limiting block (51) is arranged on the side wall of the motor (22), and a limiting protrusion (52) is arranged on the side wall of the support seat (20). The limiting block (51) is inserted and matched with the limiting protrusion (52). Connecting pipes (53) are fixed to the positions corresponding to the two second connecting blocks (35) on the inner top surface of the protection box (1). A positioning bolt (54) is bolted in the connecting pipe (53). The protection box (1) fixes the connecting pipe (53) to the corresponding second connecting block (35) through two positioning bolts (54). A plurality of evenly distributed heat dissipation holes (55) are formed in the rear side wall of the protection box (1) near the lower part.

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