A peristaltic pump with a cam housing

Abstract

The present invention belongs to the technical field of peristaltic pumps, and in particular relates to a peristaltic pump with a cam housing, comprising a protective box, wherein the protective box is a hollow structure with an opening on the front side, a box cover is fixed at the front opening of the protective box, a through slot is provided on the box cover, and a diverter plate is installed in the through slot on the box cover; by arranging a lower shell and an upper shell, the different radii of the fitting surfaces at different positions of the inner walls of the lower shell and the upper shell are utilized to realize continuous squeezing of the pump tube, thereby achieving the purpose of peristalsis of the liquid, and at the same time, the shell effectively protects and cooperates with the multiple pump tubes and two peristaltic parts located therein, thereby improving the structural stability and efficiency of the device, and by arranging a flow conversion mechanism, the flow efficiency of the liquid in the peristaltic pump is greatly improved, the speed of liquid transportation is improved, 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 in particular relates to a peristaltic pump with a cam housing. Background Art

[0002] Peristaltic pumps, instruments, and equipment, consist of three parts: the driver, the pump head, and the hose. The fluid is isolated in the pump tubing, allowing for quick tubing changes, reversible flow, and dry operation. A peristaltic pump is like pinching a fluid-filled hose between your fingers; as your fingers slide forward, the fluid moves forward. Peristaltic pumps operate on the same principle, but with rollers replacing the fingers. Fluid is pumped by alternately squeezing and releasing the pump's elastic delivery hose. Just like pinching a hose between two fingers, the movement of the fingers creates negative pressure within the tubing, causing the fluid to flow. These pumps offer advantages such as being pollution-free, self-priming, and highly accurate, making them widely used in medical infusion applications.

[0003] A peristaltic pump creates a "pillow" of fluid within a section of pump tubing between two rotating rollers. The volume of this "pillow" depends on the inner diameter of the pump tubing and the geometry of the rotor. The flow rate is determined by the product of the pump head speed, the size of the "pillow," and the number of "pillows" produced per rotor revolution. The size of the "pillow" is generally constant (except when pumping extremely viscous fluids).

[0004] Comparing pumps with the same rotor diameter, the one that produces a larger "pillow" volume delivers a larger volume of fluid per rotor revolution, but also generates greater pulsation. This is similar to the situation with diaphragm valves. On the other hand, the pump that produces a smaller "pillow" volume delivers a smaller volume of fluid per rotor revolution. Furthermore, the rapid and continuous formation of small "pillows" results in a smoother fluid flow.

[0005] Existing peristaltic pump technology, particularly infusion pumps in the medical field, widely utilizes finger-shaped peristaltic pumps, whose core is a camshaft-driven slider that squeezes a flexible tube. These pumps have advantages such as small size, accurate dosing, and easy installation. However, existing technologies may suffer from complex assembly, difficult maintenance, inconvenient hose replacement, or inflexible pressure control. For example, Chinese patent publication number CN221482128U discloses a peristaltic pump structure. This patent involves improvements to the pump housing structure and hose installation, demonstrating that existing pumps still have room for improvement in terms of ease of use and structural simplicity. In light of this, we propose a peristaltic pump with a cam housing. Summary of the Invention

[0006] An object of the present invention is to provide a peristaltic pump with a cam housing to solve the problems raised in the above background technology.

[0007] In view of this, the present invention provides a peristaltic pump with a cam housing, comprising:

[0008] A protection box, wherein the protection box has an internal hollow structure with an opening on the front side, a box cover is fixed to the front opening of the protection box, a through slot is provided on the box cover, a diverter plate 1 is plugged and installed in the through slot on the box cover, a diverter plate 2 is provided on the front side of the diverter plate 1, two groups of staggered commutation mechanisms are provided between the diverter plate 1 and the diverter plate 2, side blocks are symmetrically provided on the left and right sides of the diverter plate 2, a plurality of evenly distributed plugs 1 are provided on the inner side wall of the diverter plate 1, a plug 2 is provided at the center of the outer side wall of the diverter plate 2, and plugs 3 are symmetrically provided on the outer side wall of the diverter plate 2 and located on the upper and lower sides of the plug 2, and a sealing ring is sleeved and installed on the plug 3;

[0009] A peristaltic pump mechanism is provided in the inner cavity of the protection box and is composed of a supporting assembly, a driving assembly and a peristaltic assembly.

[0010] In this technical solution, the flow conversion mechanism is composed of a water inlet end component and a water outlet end component, and the water inlet end component includes:

[0011] Water inlet layer one, the water inlet layer one is arranged on the inner wall of the diverter plate one, the water inlet layer one is in a V-shaped structure, the water inlet layer one and the diverter plate one are an integrally formed structure, the middle part of the water inlet layer one and the end away from the middle part of the diverter plate one are respectively provided with a drain port one and a drain port two, the inner wall of the diverter plate two is provided with a water inlet layer two with the same structure as the water inlet layer one, the water inlet layer two and the diverter plate two are an integrally formed structure, and a liquid inlet port one is provided on the water inlet layer two and at one end close to the middle part of the diverter plate two.

[0012] In this technical solution, the water outlet assembly includes:

[0013] A water outlet layer 1 is provided on the inner side wall of the diverter plate 1, and the water outlet layer 1 is in a Y-shaped structure. The water outlet layer 1 and the diverter plate 1 are an integrally formed structure. The water outlet layer 1 is provided with a return port 1 and a return port 2 at both ends of the outer edge of the diverter plate 1 respectively. The inner side wall of the diverter plate 2 is provided with a water outlet layer 2 with the same structure as the water outlet layer 1. The water outlet layer 2 and the diverter plate 2 are an integrally formed structure. A drainage port 3 is provided on one end of the water outlet layer 2 close to the middle of the diverter plate 2.

[0014] In the present technical solution, the plurality of plugs 1 are respectively arranged in a one-to-one correspondence with the drain port 1, drain port 2, reflux port 1 and reflux port 2 on the diverter plate 1, the plug 2 is respectively arranged in a corresponding manner with the two liquid inlet ports 1 on the diverter plate 2, and the two plugs 3 are respectively arranged in a corresponding manner with the two drain ports 3 on the diverter plate 2. The water inlet layer 1 on the diverter plate 1 and the water inlet layer 2 on the diverter plate 2 form a closed channel when the diverter plate 1 and the diverter plate 2 are in a fitted state. The water outlet layer 1 on the diverter plate 1 and the water outlet layer 2 on the diverter plate 2 form a closed channel when the diverter plate 1 and the diverter plate 2 are in a fitted state.

[0015] In this technical solution, threaded holes are provided on the box cover at positions corresponding to the two side blocks, and the second diverter plate is fixedly connected to the box cover by bolts.

[0016] In this technical solution, the support assembly includes:

[0017] The support base is arranged in the inner cavity of the protective box. The support base has an internal hollow structure with an opening at the top. The inner cavity of the support base is provided with an annular fixing ring. A plurality of reinforcing ribs fixed to the inner wall of the support base are fixed on the circumference of the fixing ring. An upper cover is clamped and fixed at the top opening of the support base. A circular hole is opened on the upper cover that is consistent with the inner diameter of the fixing ring. A bottom cover is clamped and fixed directly below the support base.

[0018] In this technical solution, the peristaltic component includes:

[0019] The lower shell is plugged into the fixed ring, and the upper shell is arranged directly above the lower shell. The front sides of the lower shell and the upper shell are symmetrically provided with U-shaped placement grooves, and the inner wall of the placement groove is provided with a groove, and a clamp is plugged into the groove. Two vertically distributed pump tubes are movably installed between the two clamps on the lower shell and the two clamps on the upper shell.

[0020] In this technical solution, the peristaltic component further includes:

[0021] The bearing groove is provided on the inner bottom surface of the lower shell body, and a positioning column is fixed on the inner top surface of the upper shell body. A connecting block 1 is symmetrically provided on the lower shell body, and a connecting block 2 is provided on the upper shell body at a position corresponding to the two connecting blocks 1. The connecting block 1 and the lower shell body are an integrally formed structure, and the connecting block 2 and the upper shell body are an integrally formed structure. The connecting block 1 is plugged into the corresponding connecting block 2. A plurality of evenly distributed elastic blocks are provided at the edge position of the upper surface of the lower shell body, and a plurality of evenly distributed card blocks are provided at the edge position of the lower surface of the upper shell body. The plurality of elastic blocks correspond to the plurality of card blocks one by one and the card blocks are locked. The cam is connected to the drive shaft by the spring, and the cam is connected to the drive shaft by the spring, and the cam is connected to the drive shaft by the spring.

[0022] In this technical solution, the driving component includes:

[0023] The motor is plugged and installed with the motor, and the bottom cover is provided with a receiving groove for accommodating the output end of the motor to be embedded. The output shaft of the motor passes through the support seat and extends into the lower shell to be coaxially connected with the active rod.

[0024] In the present technical solution, a plurality of positioning blocks distributed at equal intervals around the circumference are fixed to the inner wall of the fixing ring, a plurality of positioning grooves matching the positioning blocks are provided on the lower surface of the lower shell, the positioning blocks are plugged into the corresponding positioning grooves, a limiting block is provided on the side wall of the motor, a limiting protrusion is provided on the side wall of the support seat, the limiting block is plugged into the limiting protrusion, connecting pipes are fixed at the inner top surface of the protection box and the corresponding positions of the two connecting blocks, the inner bolts of the connecting pipes are connected with positioning bolts, and the protection box fixes the connecting pipes to the corresponding connecting blocks by two positioning bolts, and a plurality of evenly distributed heat dissipation holes are provided on the rear side wall of the protection box near the lower position.

[0025] The beneficial effects of the present invention are:

[0026] 1. The peristaltic pump with a cam housing is equipped with a flow conversion mechanism, and uses the diversion pipeline formed by the water inlet layer 1 and the water inlet layer 2, and the water outlet layer 1 and the water outlet layer 2 to divert the liquid twice, which greatly improves the flow efficiency of the liquid in the peristaltic pump, increases the speed of liquid transportation, and saves time costs during production or work.

[0027] 2. The peristaltic pump with a cam housing, by setting a lower housing and an upper housing, utilizes the different radii of the mating surfaces at different positions on the inner walls of the lower housing and the upper housing to achieve continuous squeezing of the pump tube, thereby achieving the purpose of peristalsis of the liquid. By setting the lower housing and the upper housing, the multiple pump tubes and two peristaltic parts located therein are effectively protected and coordinated, thereby improving the structural stability and efficiency of the device.

[0028] 3. The peristaltic pump with a cam housing is equipped with a drive assembly and uses a motor to provide power. Through the constraint and limiting cooperation between the clamp ring 1 and the clamp spring 1, as well as the clamp ring 2 and the clamp spring 2, the peristaltic assembly of the upper and lower parts can be adjusted in the direction of the liquid as needed, avoiding the adverse effect of the traditional peristaltic pump having to reconnect the raw material inlet and outlet pipes due to the need to adjust the liquid inlet and outlet direction when performing multi-pipeline peristaltic transportation, thereby greatly improving the transportation capacity and transportation effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is an exploded schematic diagram of the box cover, diverter plate 1 and diverter plate 2 in the present invention;

[0031] Figure 3 This is a schematic structural diagram of the inner side of the diverter plate 1 and the diverter plate 2 in the present invention;

[0032] Figure 4 This is a schematic structural diagram of the outer sides of the first and second diverter plates in the present invention;

[0033] Figure 5 This is a schematic diagram of the structure inside the protection box of the present invention;

[0034] Figure 6 Schematic diagram of the structure of the peristaltic pump mechanism of the present invention;

[0035] Figure 7 Schematic diagram of the structure of the support assembly in the present invention;

[0036] Figure 8 is an exploded schematic diagram of the support assembly in the present invention;

[0037] Figure 9 Schematic diagram of the exploded upper and lower peristaltic components of the present invention;

[0038] Figure 10 Schematic diagram of the explosion of the lower peristaltic assembly of the present invention;

[0039] Figure 11 Schematic diagram of the explosion of the upper peristaltic assembly in the present invention;

[0040] Figure 12 Schematic diagram of the inner cavity structure of the lower shell and the upper shell in the present invention;

[0041] Figure 13 Schematic diagram of the structure of the lower drive assembly in the present invention;

[0042] Figure 14 Schematic diagram of the structure of the upper drive assembly in the present invention;

[0043] Figure 15 It is an exploded schematic diagram of the active rod and the driven rod in the present invention.

[0044] The marks in the figure are:

[0045] 1. Protective box; 2. Box cover; 3. Diverter plate 1; 4. Diverter plate 2; 5. Water inlet layer 1; 6. Water outlet layer 1; 7. Water inlet layer 2; 8. Water outlet layer 2; 9. Drain port 1; 10. Drain port 2; 11. Liquid inlet 1; 12. Return port 1; 13. Return port 2; 14. Drain port 3; 15. Side block; 16. Plug 1; 17. Plug 2; 18. Plug 3; 19. Sealing ring; 20. Support seat; 21. Bottom cover; 22. Motor; 23. Reinforcement rib; 24. Upper cover; 25. Fixing ring; 26. Lower shell; 27. Upper shell; 28. Place Slot; 29. Groove; 30. Clamp; 31. Pump tube; 32. Bearing groove; 33. Positioning column; 34. Connecting block 1; 35. Connecting block 2; 36. Elastic block; 37. Clamp; 38. Roller 1; 39. Roller 1; 40. Clamping ring 1; 41. Circlip 1; 42. Active rod; 43. Ball bearing; 44. Roller 2; 45. Roller 2; 46. Clamping ring 2; 47. Circlip 2; 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 DESCRIPTION

[0046] The following is combined with Figure 1 - Figure 15 This application is described in further detail.

[0047] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," and "horizontal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0048] Embodiment 1: This embodiment provides a peristaltic pump with a cam housing, comprising:

[0049] The protection box 1 has a hollow structure with an opening on the front side. A box cover 2 is fixed to the front opening of the protection box 1. A through slot is provided on the box cover 2. A diverter plate 3 is installed in the through slot on the box cover 2. A diverter plate 2 4 is provided on the front side of the diverter plate 3. Two groups of staggered commutation mechanisms are provided between the diverter plate 1 3 and the diverter plate 2 4. Side blocks 15 are symmetrically provided on the left and right sides of the diverter plate 2 4. A plurality of evenly distributed plugs 16 are provided on the inner side wall of the diverter plate 1 3. A plug 2 17 is provided at the center of the outer side wall of the diverter plate 2 4. Plugs 3 18 are symmetrically provided on the outer side wall of the diverter plate 2 4 and located on the upper and lower sides of the plug 2 17. A sealing ring 19 is sleeved and installed on the plug 3 18.

[0050] Peristaltic pump mechanism: The peristaltic pump mechanism is arranged in the inner cavity of the protection box 1, and the peristaltic pump mechanism consists of a supporting component, a driving component and a peristaltic component.

[0051] Example 2: 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. The flow conversion mechanism consists of an inlet end assembly and a water outlet end assembly. The inlet end assembly includes:

[0052] Water inlet layer 15 is provided on the inner side wall of diverter plate 13. Water inlet layer 15 has a V-shaped structure. Water inlet layer 15 and diverter plate 13 are integrally formed. Drain port 19 and drain port 210 are respectively provided in the middle of water inlet layer 15 and at one end away from the middle of diverter plate 3. Water inlet layer 27 having the same structure as water inlet layer 15 is provided on the inner side wall of diverter plate 24. Water inlet layer 27 and diverter plate 24 are integrally formed. Liquid inlet port 11 is provided on water inlet layer 27 and at one end near the middle of diverter plate 24.

[0053] In this embodiment, the water outlet assembly includes:

[0054] Water outlet layer 1 6 is provided on the inner side wall of diverter plate 1 3 and has a Y-shaped structure. Water outlet layer 1 6 and diverter plate 1 3 are integrally formed. Return port 1 12 and return port 2 13 are respectively provided at both ends of water outlet layer 1 6 near the outer edge of diverter plate 1 3. Water outlet layer 2 8 having the same structure as water outlet layer 1 6 is provided on the inner side wall of diverter plate 2 4. Water outlet layer 2 8 and diverter plate 2 4 are integrally formed. A drain port 3 14 is provided at one end of water outlet layer 2 8 near the middle of diverter plate 2 4.

[0055] In this embodiment, multiple plugs 16 are respectively arranged in a one-to-one correspondence with the drain port 1 9, drain port 2 10, return port 12 and return port 2 13 on the diverter plate 3, the plug 2 17 is respectively arranged in a corresponding manner with the two liquid inlet ports 11 on the diverter plate 2 4, and the two plugs 3 18 are respectively arranged in a corresponding manner with the two drain ports 3 14 on the diverter plate 2 4. The water inlet layer 1 5 on the diverter plate 1 3 and the water inlet layer 2 7 on the diverter plate 2 4 form a closed channel when the diverter plate 1 3 and the diverter plate 2 4 are in a fitted state, and the water outlet layer 1 6 on the diverter plate 3 and the water outlet layer 2 8 on the diverter plate 2 4 form a closed channel when the diverter plate 3 and the diverter plate 2 4 are in a fitted state.

[0056] During installation, align the multiple plugs 16 on the manifold 13 with the eight joints of the four pump pipes 31 of the manifold 2 and insert them into them, then insert the manifold 13 into the through groove on the box cover 2, then align the manifold 24 with the manifold 13, and fix the manifold 24 and the box cover 2 with bolts. At this time, the manifold 13 is clamped between the box cover 2 and the manifold 24, and the inner side wall of the through groove between the box cover 2 is inclined. The overall structure is a small mouth facing inward and a large mouth facing outward, so that the manifold 13 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 manifold 3 and the box cover are aligned. 2 matches the through-groove structure on the diverter plate 2. When the diverter plate 2 4 is fixed, a firmly fixed connection relationship is formed between the diverter plate 1 3 and the diverter plate 2 4. At this time, the two water inlet layers 1 5 in the diverter plate 1 3 are respectively combined with the two water inlet layers 2 7 in the diverter plate 2 4 to form a pipe-like structure sufficient for water circulation. The same is true for the two water outlet layers 1 6 in the diverter plate 1 3 and the two water outlet layers 2 8 in the diverter plate 2 4. The diverter plate 1 3 and the diverter plate 2 4 mainly play the role of diversion and merging. While improving the efficiency of the peristaltic pump, it also reduces the clutter of the number of external pipes, and the overall aesthetics and practicality are greatly improved.

[0057] During specific use, it is only necessary to connect the external water supply pipe to the plug 2 17 on the outer wall of the diverter plate 2 4. Under the action of the plug 2 17, the liquid is diverted through the two liquid inlets 11 and enters the two water inlet layers 2 7 between the diverter plate 1 3 and the diverter plate 2 4, and is diverted again through the discharge port 1 9 and the discharge port 2 10 on the single water inlet layer 2 7, and enters the four pump tubes 31 in the peristaltic pump through the multiple plugs 16 on the inner side of the diverter plate 3. Among them, the liquid in the water inlet layer 1 5 on the upper side enters from the right ends of the upper two pump tubes 31 of the pump tube 31. It is discharged from the left end, then enters the inner cavity of the water outlet layer 1 6 through the return port 1 12 and the return port 2 13, and then is output from the plug 3 18 on the outer wall of the diverter plate 2 4 through the discharge port 3 14 on the water outlet layer 2 8, forming a perfect counterclockwise closed loop; the liquid in the water inlet layer 1 5 on the lower side is the same, but the liquid enters from the left end of the two lower pump tubes 31 and is discharged from the right end, and the whole moves in a clockwise closed loop, but is finally discharged through the two plugs 3 18; in addition, the plug 3 18 can also be used as the input end of the liquid, and this device does not impose too many requirements and limitations on it.

[0058] By setting up a flow conversion mechanism, the liquid is diverted twice by using the diversion pipeline formed by the water inlet layer 1 5 and the water inlet layer 2 7, and the water outlet layer 1 6 and the water outlet layer 2 8, which greatly improves the flow efficiency of the liquid in the peristaltic pump, improves the speed of liquid transportation, and saves time costs during production or work. Through the staggered arrangement of the water inlet layer and the water outlet layer, the liquid forms a closed-loop flow in the pump, reducing energy loss and improving flow stability. No additional pipeline connection is required, the external pipeline layout is simplified, and the risk of failure caused by cluttered pipelines is reduced.

[0059] Example 3: 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: threaded holes are opened on the box cover 2 at positions corresponding to the two side blocks 15, and the diverter plate 2 4 is fixedly connected to the box cover 2 by bolts.

[0060] Among them, the operator can disassemble and clean the diverter plate 1 3 and the diverter plate 2 4 by removing the bolts between the diverter plate 2 4 and the box cover 2, thereby ensuring the cleanliness of the inner cavity environment of the diverter pipe and preventing blockage.

[0061] Example 4: 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. The support assembly includes:

[0062] The support base 20 is arranged in the inner cavity of the protective box 1. The support base 20 has an internal hollow structure with an open top. The inner cavity of the support base 20 is provided with an annular fixing ring 25. A plurality of reinforcing ribs 23 fixed to the inner wall of the support base 20 are fixed on the circumference of the fixing ring 25. An upper cover 24 is fixed at the top opening of the support base 20. A circular hole is opened on the upper cover 24 with the same inner diameter as the fixing ring 25. A bottom cover 21 is fixed directly below the support base 20.

[0063] Among them, reference Figure 8 The support assembly mainly relies on the support base 20 and the pump tube 31 to provide support for the peristaltic pump as a whole. The multiple reinforcing ribs 23 in the inner cavity of the motor 22 provide effective guarantee for the overall strength of the support base 20, avoiding the upper peristaltic assembly from shaking in the fixed 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, thereby cooperating with the bottom cover 21 to completely cover and install the motor 22, reducing the adverse effects of vibration on the entire device when the motor 22 is working.

[0064] Example 5: 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. The peristaltic assembly includes:

[0065] The lower shell 26 is inserted and installed in the fixing ring 25. The upper shell 27 is arranged directly above the lower shell 26. The front sides of the lower shell 26 and the upper shell 27 are symmetrically provided with U-shaped placement grooves 28. The inner wall of the placement groove 28 is provided with a groove 29. A clamp 30 is inserted and installed in the groove 29. Two vertically distributed pump tubes 31 are movably installed between the two clamps 30 on the lower shell 26 and the two clamps 30 on the upper shell 27.

[0066] In this embodiment, the peristaltic component further comprises:

[0067] The bearing groove 32 is provided on the inner bottom surface of the lower shell 26, and the inner top surface of the upper shell 27 is fixed with a positioning column 33. The lower shell 26 is symmetrically provided with a connecting block 1 34, and the upper shell 27 is provided with a connecting block 2 35 at a position corresponding to the two connecting blocks 1 34. The connecting block 1 34 and the lower shell 26 are an integrally formed structure, and the connecting block 2 35 and the upper shell 27 are an integrally formed structure. The connecting block 1 34 is plugged into the corresponding connecting block 2 35. A plurality of evenly distributed elastic blocks 36 are provided at the edge position of the upper surface of the lower shell 26, and a plurality of evenly distributed card blocks 37 are provided at the edge position of the lower surface of the upper shell 27. The plurality of elastic blocks 36 correspond to the plurality of card blocks 37 one by one and are snap-fitted. A roller 38 is rotatably installed in the lower shell 26, and a rolling roller 39 is symmetrically rotatably installed on the roller 38. A clamping ring 40 is fixedly installed on the bottom of the roller 38, and a retaining spring 41 is meshed in the retaining ring 40. An active rod 42 is coaxially connected to the retaining spring 41, and a ball bearing 43 is coaxially connected to the bottom end of the active rod 42, 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 shell 27, and a rolling roller 45 is symmetrically rotatably installed on the roller 44. A clamping ring 46 is fixedly connected to the top of the roller 44, and a retaining spring 47 is meshed in the retaining ring 46. A driven rod 48 is coaxially connected to the retaining spring 47, and the driven rod 48 is plugged into and matched with the active rod 42.

[0068] Among them, refer to the attached Figure 9-15 The four pump tubes 31 are squeezed by roller 1 38 and roller 2 44 at positions close to the inner wall of the lower shell 26 and the upper shell 27 respectively. When roller 1 38 or roller 2 44 rotates, roller 1 39 and roller 2 45 on both sides thereof also perform orbital motion. When roller 1 39 or roller 2 45 contacts the pump tube 31, it will squeeze the pump tube 31 with the inner wall of the shell, thereby achieving the effect of liquid peristalsis. Refer to the attached figure. Figure 12 , a transition section is provided on the circumferential side walls of the lower shell 26 and the upper shell 27, which facilitates the roller 1 39 or roller 2 45 to cut into the side wall of the pump tube 31 when rotating and squeeze the pump tube 31. The radius of the shell mating surface on the circumferential side wall on the side away from the groove 29 is larger. By increasing the clamping force, when roller 1 39 or roller 2 45 rotates to this position, the pressure reached by the pump body can be increased. When roller 1 39 or roller 2 45 runs to a state parallel to the groove 29, the above state reaches the limit state. At this time, the clamping force applied to the pump tube 31 is the largest, and the liquid that has entered the front side of the liquid flow direction is squeezed and can be pushed forward quickly. When roller 1 39 or roller 2 45 runs to a state perpendicular to the groove 29, the clamping force applied to the pump tube 31 is the smallest, 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.

[0069] By setting up the lower shell 26 and the upper shell 27, and utilizing the different radii of the fitting surfaces at different positions on the inner walls of the lower shell 26 and the upper shell 27, the pump tube 31 is continuously squeezed, thereby achieving the purpose of liquid peristalsis. By setting up the lower shell 26 and the upper shell 27, the multiple pump tubes 31 and the two peristaltic parts located therein are effectively protected and coordinated, thereby improving the structural stability and efficiency of the device.

[0070] The reversing mechanism works in synergy with the upper shell 27 and the lower shell 26. The liquid diverted by the reversing mechanism enters the cam housing through the pump pipe, and the housing squeezes and pushes the liquid to be discharged through the reversing mechanism. The multiple streams of liquid after diversion are squeezed by the housing simultaneously. The closed-loop design of the reversing mechanism and the housing squeeze form a "pressure linkage". When the pressure of a certain section of the pump pipe is abnormal, other flow channels can balance the pressure to avoid the risk of pipe burst.

[0071] Example 6: 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. The drive assembly includes:

[0072] The motor 22 is plugged and installed, and a receiving groove for accommodating the output end of the motor 22 is opened on the bottom cover 21. The output shaft of the motor 22 passes through the support seat 20 and extends into the lower shell 26 to be coaxially connected with the active rod 42.

[0073] When the motor 22 is in a state of rotation, the lower part of the peristaltic assembly 41 is engaged with the lower part of the clamping ring 40, and the lower part of the clamping ring 40 is engaged with the lower part of the clamping ring 40.

[0074] By setting up a driving component and using the motor 22 to provide power, and through the constraint and limiting cooperation between the clamp ring 40 and the clamp spring 1 41, as well as the clamp ring 46 and the clamp spring 2 47, the peristaltic components of the upper and lower parts can be adjusted in the direction of the liquid as needed, avoiding the adverse effect of the traditional peristaltic pump having to re-plug the raw material inlet and outlet pipes due to the need to adjust the liquid inlet and outlet direction when performing multi-pipeline peristaltic transportation, thereby greatly improving the transportation capacity and transportation effect of the device.

[0075] The drive assembly and the cam housing work in synergy. The drive assembly controls the rotation of roller one 38 and roller two 44 inside the housing through the collaborative mechanism of clamping ring one 40, clamping ring two 46, retaining spring one 41 and retaining spring two 47, thereby adjusting the pump tube extrusion frequency and direction. 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 on demand without stopping for reorganization, thereby improving production continuity. The "one-way drive" characteristic of the drive assembly is combined with the extrusion radius difference of the housing to control the liquid delivery pressure fluctuation range within ±5%, meeting the needs of high-precision scenarios.

[0076] Example 7: 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: the inner wall of the fixed ring 25 is fixed with a plurality of positioning blocks 49 distributed at equal intervals around the circumference, and the lower surface of the lower shell 26 is provided with a plurality of positioning grooves 50 matching the positioning blocks 49, and the positioning blocks 49 are plugged into the corresponding positioning grooves 50.

[0077] During the insertion, it is necessary to ensure that the inlet and outlet ends of the plurality of pump tubes 31 are close to one side of the through groove on the box cover 2 .

[0078] By providing the positioning block 49 and the positioning slot 50 , the lower housing 26 will not rotate on the supporting assembly, thereby improving the structural stability of the device.

[0079] Example 8: 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 limiting block 51 is provided on the side wall of the motor 22, and a limiting protrusion 52 is provided on the side wall of the support seat 20, and the limiting block 51 is plugged into the limiting protrusion 52.

[0080] A small round hole is provided on the limiting block 51 , so that when the support base 20 is closed downward with the bottom cover 21 , the limiting protrusion 52 can be exactly inserted into the small round hole on the limiting block 51 .

[0081] By providing 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.

[0082] Example 9: 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: connecting pipes 53 are fixed at the inner top surface of the protection box 1 and the positions corresponding to the two connecting blocks 2 35, and the connecting pipes 53 are bolted with positioning bolts 54. The protective box 1 fixes the connecting pipes 53 to the corresponding connecting blocks 2 35 through the two positioning bolts 54.

[0083] During installation, align the two connecting blocks 35 on the upper shell 27 with the connecting pipes 53 at the upper part of the inner cavity of the protection box 1 , and then tighten them with the positioning bolts 54 .

[0084] 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 .

[0085] Example 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.

[0086] The provision of heat dissipation holes 55 allows air exchange between the interior of protective box 1 and the external environment, reducing the possibility of heat accumulation generated by the components within protective box 1 during operation. The commutation mechanism diverts flow, the drive assembly controls extrusion, the cam housing performs peristaltic motion, and the support assembly ensures stability, forming a closed-loop system. Through the intelligent coordination of commutation and drive, a "fault-safe switching" function is implemented (automatically switching to other flow paths in the event of a flow path failure).

[0087] 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 by the active rod 42 and the driven rod 48 to make the clamping spring 1 41 and the clamping spring 2 47 rotate. The two respectively realize the rotation of the upper and lower parts of the peristaltic assembly through the constraints of the clamping ring 1 40 and the clamping ring 2 46; when the rotating shaft of the motor 22 rotates clockwise, the upper peristaltic assembly starts to work, and the rotation 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 a state 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 extrusion pressure is generated on pump tube 31, so that the liquid in pump tube 31 can continue to peristalsis 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 peristaltic component below is working.

[0088] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application 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 this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A peristaltic pump having a cam housing, characterized in that: include: A protective box (1), wherein the protective box (1) is a hollow structure with a front opening, a box cover (2) is fixed at the front opening of the protective box (1), a through slot is provided on the box cover (2), a diverter plate (3) is inserted and installed in the through slot on the box cover (2), a diverter plate (4) is provided on the front side of the diverter plate (3), two groups of staggered flow conversion mechanisms are provided between the diverter plate (3) and the diverter plate (4), side blocks (15) are symmetrically provided on the left and right sides of the diverter plate (4), a plurality of evenly distributed plugs (16) are provided on the inner side wall of the diverter plate (3), a plug (17) is provided at the center of the outer side wall of the diverter plate (4), a plug (18) is symmetrically provided on the outer side wall of the diverter plate (4) and located on the upper and lower sides of the plug (17), and a sealing ring (19) is sleeved and installed on the plug (18); A peristaltic pump mechanism, the peristaltic pump mechanism being arranged in the inner cavity of the protection box (1), the peristaltic pump mechanism being composed of a support assembly, a drive assembly and a peristaltic assembly; The flow conversion mechanism is composed of a water inlet end component and a water outlet end component, and the water inlet end component includes: A water inlet layer (5), the water inlet layer (5) is arranged on the inner side wall of the diverter plate (3), the water inlet layer (5) is a V-shaped structure, the water inlet layer (5) and the diverter plate (3) are an integrally formed structure, the middle part of the water inlet layer (5) and the end away from the middle part of the diverter plate (3) are respectively provided with a drain port (9) and a drain port (10), the inner side wall of the diverter plate (4) is provided with a water inlet layer (7) having the same structure as the water inlet layer (5), the water inlet layer (7) and the diverter plate (4) are an integrally formed structure, and the water inlet port (11) is provided on the water inlet layer (7) and at one end close to the middle part of the diverter plate (4); The support assembly comprises: A support base (20) is provided in the inner cavity of the protection box (1), the support base (20) is a hollow structure with an open top, the inner cavity of the support base (20) is provided with an annular fixing ring (25), a plurality of reinforcing ribs (23) fixed to the inner wall of the support base (20) are fixed on the circumference of the fixing ring (25), an upper cover (24) is fixed at the top opening of the support base (20), a circular hole having the same inner diameter as the fixing ring (25) is provided on the upper cover (24), and a bottom cover (21) is fixed directly below the support base (20).

2. A peristaltic pump with a cam housing according to claim 1, characterized in that: The water outlet assembly includes: A water outlet layer (6) is provided on the inner side wall of the diverter plate (3), the water outlet layer (6) is in a Y-shaped structure, the water outlet layer (6) and the diverter plate (3) are an integrally formed structure, the water outlet layer (6) is provided with a return port (12) and a return port (13) at both ends of the water outlet layer (6) close to the outer edge of the diverter plate (3), the inner side wall of the diverter plate (4) is provided with a water outlet layer (8) having the same structure as the water outlet layer (6), the water outlet layer (8) and the diverter plate (4) are an integrally formed structure, and a drainage port (14) is provided at one end of the water outlet layer (8) close to the middle of the diverter plate (4).

3. A peristaltic pump with a cam housing according to claim 2, characterized in that: The plurality of plugs (16) are respectively arranged in a one-to-one correspondence with the drain port (9), drain port (10), return port (12) and return port (13) on the diverter plate (3); the plug (17) is respectively arranged in a one-to-one correspondence with the two liquid inlet ports (11) on the diverter plate (4); the two plugs (18) are respectively arranged in a one-to-one correspondence with the two drain ports (14) on the diverter plate (4); the water inlet layer (5) on the diverter plate (3) and the water inlet layer (7) on the diverter plate (4) form a closed channel when the diverter plate (3) and the diverter plate (4) are in a fitted state; the water outlet layer (6) on the diverter plate (3) and the water outlet layer (8) on the diverter plate (4) form a closed channel when the diverter plate (3) and the diverter plate (4) are in a fitted state.

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

5. A peristaltic pump with a cam housing according to claim 4, characterized in that: The peristaltic assembly comprises: A lower shell (26) is inserted and installed in the fixing ring (25). An upper shell (27) is provided directly above the lower shell (26). The front sides of the lower shell (26) and the upper shell (27) are symmetrically provided with U-shaped placement grooves (28). The inner wall of the placement groove (28) is provided with a groove (29). A clamp (30) is inserted and installed in the groove (29). Two vertically distributed pump pipes (31) are movably installed between the two clamps (30) on the lower shell (26) and the two clamps (30) on the upper shell (27).

6. A peristaltic pump with a cam housing according to claim 5, characterized in that: The peristaltic assembly further comprises: A bearing groove (32), wherein the bearing groove (32) is provided on the inner bottom surface of the lower shell (26), a positioning column (33) is fixed on the inner top surface of the upper shell (27), a connecting block (34) is symmetrically provided on the lower shell (26), a connecting block (35) is provided on the upper shell (27) at positions corresponding to the two connecting blocks (34), the connecting block (34) and the lower shell (26) are an integrally formed structure, the connecting block (35) and the upper shell (27) are an integrally formed structure, the connecting block (34) and the corresponding connecting block (35) are plugged together, a plurality of elastic blocks (36) are evenly distributed at the edge position of the upper surface of the lower shell (26), a plurality of card blocks (37) are evenly distributed at the edge position of the lower surface of the upper shell (27), a plurality of the elastic blocks (36) correspond one to one with the plurality of card blocks (37) and are card-engaged together, the lower shell A roller (38) is rotatably mounted in the body (26), a roller (39) is symmetrically mounted on the roller (38), a clamping ring (40) is fixedly mounted on the bottom of the roller (38), a retaining spring (41) is meshedly connected to the retaining ring (40), an active rod (42) is coaxially connected to the retaining spring (41), a ball bearing (43) is coaxially connected to the bottom end of the active rod (42), and the ball bearing (43) is fixedly mounted on the bottom end of the roller (38). Installed in the inner cavity of the bearing groove (32), a second roller (44) is rotatably installed in the upper shell (27), a second roller (45) is symmetrically rotatably installed on the second roller (44), a second clamping ring (46) is fixedly connected to the top of the second roller (44), a second retaining spring (47) is meshedly connected to the second retaining ring (46), and the second retaining spring (47) is coaxially connected to a driven rod (48), and the driven rod (48) is plugged into and matched with the active rod (42).

7. A peristaltic pump with a cam housing according to claim 6, characterized in that: The drive assembly includes: The motor (22) is plugged and installed with the motor (22), and the bottom cover (21) is provided with a receiving groove for receiving the output end of the motor (22) to be embedded. The output shaft of the motor (22) passes through the support seat (20) and extends into the lower shell (26) to be coaxially connected with the active rod (42).

8. A peristaltic pump with a cam housing according to claim 7, characterized in that: The inner wall of the fixing ring (25) is fixed with a plurality of positioning blocks (49) distributed at equal intervals around the circumference, the lower surface of the lower shell (26) is provided with a plurality of positioning grooves (50) matching the positioning blocks (49), the positioning blocks (49) are plugged into the corresponding positioning grooves (50), the side wall of the motor (22) is provided with a limiting block (51), the side wall of the support seat (20) is provided with a limiting protrusion (52), the limiting block (51) is plugged into the limiting protrusion (52), the inner top surface of the protection box (1) and the two connecting blocks (35) are fixed with connecting pipes (53), the connecting pipes (53) are bolted with positioning bolts (54), the protection box (1) fixes the connecting pipes (53) to the corresponding connecting blocks (35) through the two positioning bolts (54), and the rear side wall of the protection box (1) is provided with a plurality of evenly distributed heat dissipation holes (55) near the lower position.

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