A high pressure resistant peristaltic pump which is easy to assemble

Abstract

The application relates to a high-pressure-resistant peristaltic pump convenient to assemble, which comprises a driving piece, a rear shell, a front shell, a transmission assembly, a pump pipe and a rolling assembly for controlling flow of the pump pipe, the top of the pump pipe is provided with a threaded joint assembly for pipeline connection, and a gland assembly for pressing the rolling assembly and the transmission assembly is arranged between the rolling assembly and the front shell. The application can fix or separate the pump pipe and the external pipeline by rotating the structure on the threaded joint assembly; compared with the non-detachable connection mode such as welding and gluing, the threaded connection does not need special tools, the assembling steps are simple, the pump pipe can be quickly disassembled when the pump pipe is replaced and the pipeline is maintained in the later period, meanwhile, the pump can work with the support of the gland assembly under the condition that the front shell is not covered, quality inspection is completed, the production efficiency is improved, the pump pipe can be installed without the aid of a jig, and the production capacity is improved.

Description

Technical Field

[0001] This application relates to the field of fluid transport equipment technology, and in particular to a high-pressure peristaltic pump that is easy to assemble. Background Technology

[0002] Currently, peristaltic pumps, as a type of device that transports fluids by squeezing an elastic pump tube, are widely used in many fields such as chemical, pharmaceutical, food processing, environmental protection, and laboratories due to their characteristics of fluid contacting only the pump tube, no pollution, high delivery accuracy, and the ability to transport in reverse.

[0003] In existing technologies, high-pressure peristaltic pumps use cable ties to fix the pump pipe joints. This method is low in cost but has poor sealing performance and is prone to leakage. The second method is to use bolts for fastening. Although the sealing performance is better, the assembly and disassembly process is cumbersome and the casing is easily damaged.

[0004] Regarding the aforementioned technologies, the use of cable ties to secure the pump pipe joints is prone to leakage, and the use of bolts and flanges for fixing makes disassembly and replacement even more inconvenient. In addition, the entire pump must be fully assembled before quality inspection can be carried out. Disassembling the front casing during repairs will cause the internal structure of the pump body to fall apart, making it difficult to inspect and maintain, and thus easily damaging the casing. Summary of the Invention

[0005] To address the problems of easy leakage when the pump pipe joint is fixed with cable ties, and the inconvenience of disassembly and replacement when fixed with bolts and flanges; at the same time, the entire pump must be fully assembled before quality inspection, and disassembling the front shell during repair will cause the internal structure of the pump body to fall apart, making it difficult to inspect and maintain, and thus easily damaging the shell, this application provides a high-pressure peristaltic pump that is easy to assemble.

[0006] This application provides a high-pressure peristaltic pump that is easy to assemble, and adopts the following technical solution:

[0007] A high-pressure peristaltic pump that is easy to assemble includes a drive unit, a rear housing, a front housing, a transmission assembly, a pump tube, and a rolling assembly for controlling the flow of the pump tube. The top of the pump tube is provided with a threaded connector assembly for pipe connection, and a pressure cap assembly is provided between the rolling assembly and the front housing for pressing the rolling assembly and the transmission assembly together.

[0008] The threaded connector assembly includes a first nut for fixed connection to the pipe, an insertion connector for connection to the pump pipe and the pipe, and a second nut for fixed connection to the pump pipe. Both ends of the insertion connector are provided with threaded grooves that are threadedly connected to the first nut and the second nut, respectively. The first nut is located at the end of the insertion connector away from the pump pipe, and the second nut is located at the end of the insertion connector that is inserted into the pump pipe.

[0009] The cap assembly includes a Z-shaped support rod, a locking block for connecting to the rear shell, and a limiting block for limiting the rolling assembly. Both the locking block and the limiting block are mounted on the support rod.

[0010] By adopting the above technical solution, the threaded connector assembly uses a threaded connection structure of "first nut + insert connector + second nut": the threaded grooves at both ends of the insert connector match the first nut (connecting the external pipe) and the second nut (fixing the pump pipe) respectively. The pump pipe can be fixed or separated from the external pipe by rotating the nut. Compared with non-removable connection methods such as welding and gluing, threaded connection requires no special tools, the assembly steps are simple, and it can be quickly disassembled when replacing the pump pipe or maintaining the pipeline, greatly reducing the difficulty of operation. At the same time, the limiting block of the gland assembly directly engages with the rolling assembly. The component (responsible for controlling the flow of the extrusion pump) is limited to ensure that the rolling assembly always maintains the preset trajectory movement when working under high pressure, avoiding positional deviation caused by vibration and pressure fluctuations. This stable limiting can reduce the "biased pressure" or "overpressure" of the rolling assembly on the pump tube, preventing the pump tube from breaking due to uneven local stress, adapting to stable operation under high pressure scenarios, and the pump can work without the front cover, supported by the pressure cover assembly, completing quality inspection, facilitating rework, and improving production efficiency. With the pressure cover support, all are assembled in the rear cover, and the pump tube can be installed without the aid of jigs, increasing production capacity.

[0011] Preferably, the second nut is provided with a positioning groove for fixing the second nut to the rear shell, and the rear shell is connected with a positioning block that cooperates with the positioning groove. The positioning block and the positioning groove are connected by a snap-fit.

[0012] By adopting the above technical solution, and by setting a positioning block and a positioning groove, when the peristaltic pump is running at high pressure, the fluid pressure will generate a reverse thrust on the threaded joint assembly, which may cause the threaded connection between the second nut and the insertion joint to loosen. The positioning block, by engaging with the positioning groove, fixes the second nut to the rear shell, which is equivalent to providing an additional rigid constraint for the second nut, forming a rigid connection between the second nut and the pump body rear shell, directly offsetting the reaction force generated by the high-pressure fluid, preventing the second nut from loosening due to continuous force, and ensuring that the compression state of the second nut on the pump pipe and the insertion joint is always stable, fundamentally reducing the risk of high-pressure leakage.

[0013] Preferably, the transmission assembly includes a driving wheel, a driven wheel, and a toothed groove. The driving wheel is connected to the output end of the driving component, the driven wheel is engaged with the surface of the driving wheel, and the toothed groove is formed on the inner wall of the rear housing. The side of the driven wheel away from the driving wheel engages with the toothed groove.

[0014] By adopting the above technical solution, the teeth of the driving wheel, driven wheel, and gear groove mesh with each other, which can limit the radial displacement of each component during movement. Even if the pump body vibrates under high pressure, the meshing teeth can offset some of the vibration energy through mutual constraint, reduce the "impact" in the power transmission process, ensure the uniformity of the rotational speed of the rolling assembly (driven by the transmission assembly), and thus stabilize the flow output of the pump pipe.

[0015] Preferably, a retaining ring is provided between the rolling assembly and the transmission assembly, and the retaining ring is located between the driven wheel and the pump pipe.

[0016] By adopting the above technical solution, the retaining ring can act as a physical barrier to completely isolate the driven wheel from the pump pipe, preventing direct contact between the two, protecting the pump pipe from mechanical damage from the source, and extending its service life.

[0017] Preferably, the rolling assembly includes a bracket, a connecting shaft, and a rotor. The bracket is rotatably connected to the connecting shaft, the end of the connecting shaft away from the bracket is connected to a driven wheel, and the rotor is sleeved on the surface of the connecting shaft.

[0018] By adopting the above technical solution, the bracket and the connecting shaft are rotatably connected (such as with bearings), allowing the connecting shaft to rotate flexibly relative to the bracket. The rotor, which is fitted onto the surface of the connecting shaft, directly contacts and squeezes the pump pipe. When the pump pipe deforms due to high-pressure fluid or its own elasticity, the rotor can adaptively adjust the squeezing angle through the rotation of the connecting shaft, ensuring that the rotor is always in contact with the surface of the pump pipe. This avoids "jamming" or "pressure leakage" caused by rigid contact, ensuring that the fluid push amount is uniform each time it is rolled, and improving the flow stability.

[0019] Preferably, the number of driven wheels is three, the number of rotors corresponds to the number of driven wheels, and the three rotors form an equilateral triangle.

[0020] By adopting the above technical solution, the equilateral triangle formed by the three rotors can create a closed "compression triangle zone" on the surface of the pump pipe: the spacing between adjacent rotors is equal, and the compression force on the pump pipe is more continuous, which can effectively block the backflow path of high-pressure fluid. Especially when conveying high-pressure fluid, this continuous and symmetrical compression can improve the sealing performance of the pump pipe, avoid "leakage" caused by insufficient local sealing, and ensure the efficiency of unidirectional fluid delivery.

[0021] Preferably, a positioning hole is provided on the surface of the bracket, and the positioning hole is used in conjunction with the limiting block.

[0022] By adopting the above technical solution, the cooperation between the positioning hole and the limiting block is a "rigid positioning", which can quickly determine the relative position of the bracket and the pressure cap assembly through shape matching during assembly, making it convenient for users to quickly position and thus facilitating the assembly of the high-pressure peristaltic pump.

[0023] Preferably, the drive component is fixedly connected to the rear housing by bolts, and the output end of the drive component extends into the rear housing.

[0024] By adopting the above technical solution, the bolt connection is a detachable rigid connection. The preload generated by tightening the bolts can tightly fix the drive component (such as a motor) to the rear housing, effectively resisting the vibration and output torque generated during the operation of the drive component. At the same time, the output end of the drive component (such as the motor shaft) extends into the rear housing and can be directly connected to the drive wheel inside the rear housing (such as a key connection or coupling connection), without the need for additional long shafts or transition parts, which greatly shortens the transmission path.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The threaded connector assembly employs a threaded connection structure of "first nut + insert connector + second nut": the threaded grooves at both ends of the insert connector match the first nut (connecting to the external pipe) and the second nut (fixing the pump pipe) respectively. Fixing or separating the pump pipe from the external pipe is achieved by rotating the threads. Compared to non-removable connection methods such as welding and gluing, threaded connections require no special tools, have simple assembly steps, and allow for quick disassembly when replacing the pump pipe or maintaining the pipeline, significantly reducing operational difficulty. Simultaneously, the limiting block of the gland assembly directly engages with the rolling assembly (negative...) The pressure pump (control flow) is limited to ensure that the rolling assembly always maintains the preset trajectory movement when working under high pressure, avoiding positional deviation caused by vibration and pressure fluctuation. This stable limit can reduce the "biased pressure" or "overpressure" of the rolling assembly on the pump tube, prevent the pump tube from breaking due to uneven local stress, adapt to stable operation under high pressure scenarios, and the pump can work without the front cover, supported by the pressure cover assembly, to complete quality inspection, facilitate rework, and improve production efficiency. With the pressure cover support, all are assembled in the rear cover, and the pump tube can be installed without the aid of jigs, increasing production capacity.

[0027] 2. By setting a positioning block, when the peristaltic pump is running at high pressure, the fluid pressure will generate a reverse thrust on the threaded joint assembly, which may cause the threaded connection between the second nut and the insertion joint to loosen (i.e., "thread unwinding"). After the positioning block is fixed to the rear shell by snapping, it is equivalent to providing an additional rigid constraint for the second nut, forming a rigid connection between the second nut and the pump body rear shell, directly offsetting the reaction force generated by the high-pressure fluid, preventing the second nut from loosening due to continuous force, and ensuring that the compression state of the second nut on the pump pipe and the insertion joint is always stable, fundamentally reducing the risk of high-pressure leakage.

[0028] 3. The fit between the positioning hole and the limiting block is a "rigid positioning", which can quickly determine the relative position of the bracket and the pressure cap assembly through shape matching during assembly, making it easy for users to quickly position the components and thus facilitating the assembly of the high-pressure peristaltic pump. Attached Figure Description

[0029] Figure 1 This is a front-view perspective view of a high-pressure peristaltic pump;

[0030] Figure 2 This is a three-dimensional exploded view of a high-pressure peristaltic pump.

[0031] Figure 3 This is a 3D diagram of the internal structure of a high-pressure peristaltic pump.

[0032] Figure 4 This is a three-dimensional structural diagram of the transmission assembly;

[0033] Figure 5 This is a three-dimensional structural diagram of the rolling assembly and the threaded joint assembly.

[0034] Reference numerals: 100, driving component; 200, rear housing; 300, front housing; 400, transmission assembly; 410, driving wheel; 420, driven wheel; 430, toothed groove; 500, pump pipe; 600, rolling assembly; 610, bracket; 620, connecting shaft; 630, rotor; 640, positioning hole; 700, threaded joint assembly; 710, first nut; 720, insertion joint; 730, second nut; 740, positioning block; 750, positioning groove; 760, threaded groove; 800, gland assembly; 810, support rod; 820, locking block; 830, limiting block; 900, retaining ring. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail.

[0036] This application discloses a high-pressure resistant peristaltic pump that is easy to assemble.

[0037] Reference Figure 1 and Figure 2 A pressure-resistant peristaltic pump that is easy to assemble includes a drive component 100, a rear housing 200, a front housing 300, a transmission assembly 400, a pump tube 500, a rolling assembly 600 for controlling the flow in the pump tube 500, a threaded connector assembly 700 for connecting the pipe, and a gland assembly 800 for pressing the rolling assembly 600 and the transmission assembly 400 together. The drive component 100 is mounted on the rear housing 200, the transmission assembly 400 is disposed within the rear housing 200, and the pump tube 500 is sleeved on the surface of the rolling assembly 600. The rolling assembly 600 is connected to the transmission assembly 400, the threaded connector assembly 700 is disposed on the pump tube 500, and the gland assembly 800 is disposed between the front housing 300 and the rolling assembly 600.

[0038] The threaded connector assembly 700 includes a first nut 710 for fixed connection to the pipe, an insertion connector 720 for connection to the pump pipe 500 and the pipe, and a second nut 730 for fixed connection to the pump pipe 500. The insertion connector 720 has threaded grooves 760 on both ends of its surface, which are respectively threaded to the first nut 710 and the second nut 730. The first nut 710 is located at the end of the insertion connector 720 away from the pump pipe 500, and the second nut 730 is located at the end of the insertion connector 720 inserted into the pump pipe 500.

[0039] The pressure cap assembly 800 includes a Z-shaped support rod 810, a locking block 820 for connecting with the rear shell 200, and a limiting block 830 for limiting the rolling assembly 600. The locking block 820 and the limiting block 830 are both mounted on the support rod 810. The locking block 820 is locked onto the rear shell 200, and the limiting block 830 is locked onto the rolling assembly 600.

[0040] Using the above scheme, the threaded connector assembly 700 adopts a threaded connection structure of "first nut 710 + insertion connector 720 + second nut 730": the threaded grooves 760 at both ends of the insertion connector 720 are respectively matched with the first nut 710 to connect to the external pipe and the second nut 730 to fix the pump pipe 500. The pump pipe 500 can be fixed or separated from the external pipe by rotating the nut. Compared with non-removable connection methods such as welding and gluing, the threaded connection does not require special tools, the assembly steps are simple, and it can be quickly disassembled when replacing the pump pipe 500 or maintaining the pipeline, which greatly reduces the difficulty of operation. At the same time, the limiting block 830 of the gland assembly 800 directly rolls against the pipe. The pressure assembly 600 is responsible for controlling the flow of the extrusion pump tube 500 and limiting its movement. This ensures that the pressure assembly 600 maintains its preset trajectory during high-pressure operation, preventing positional deviations caused by vibration and pressure fluctuations. This stable limiting reduces the "biased pressure" or "overpressure" exerted by the pressure assembly 600 on the pump tube 500, preventing the pump tube 500 from breaking due to uneven local stress. It is suitable for stable operation under high-pressure scenarios. Furthermore, without covering the front shell 300, the pump can operate and complete quality inspection by supporting it with the pressure cover assembly 800, facilitating rework and improving production efficiency. With the pressure cover support, all components are assembled in the rear shell 200, allowing the pump tube 500 to be installed without the aid of jigs, thus increasing production capacity.

[0041] refer to Figure 1 and Figure 2The drive component 100 is fixedly connected to the rear housing 200 by bolts. The output end of the drive component 100 extends into the rear housing 200 and connects to the drive wheel 410. The preload generated by tightening the bolts can tightly fix the drive component 100 to the rear housing 200, effectively resisting the vibration and output torque generated during the operation of the drive component 100. At the same time, the output end of the drive component 100 extends into the rear housing 200 and can be directly connected to the drive wheel 410 inside the rear housing 200 without the need for an additional long shaft or transition component, which greatly shortens the transmission path.

[0042] refer to Figure 2 and Figure 3 The second nut 730 is provided with a positioning groove 750 for fixing the second nut 730 to the rear housing 200. A positioning block 740 that mates with the positioning groove 750 is connected to the rear housing 200. The positioning block 740 and the positioning groove 750 are connected by a snap-fit. By setting the positioning block 740 and the positioning groove 750, when the peristaltic pump is running at high pressure, the fluid pressure will generate a reverse thrust on the threaded joint assembly 700, which may cause the threaded connection between the second nut 730 and the insertion joint 720 to loosen. The positioning block 740, through the snap-fit ​​positioning groove 750, fixes the second nut 730 to the rear shell 200, which is equivalent to providing additional rigid constraints for the second nut 730, forming a rigid connection between the second nut 730 and the pump body rear shell 200, directly offsetting the reaction force generated by the high-pressure fluid, preventing the second nut 730 from loosening due to continuous force, and ensuring that the compression state of the second nut 730 on the pump pipe 500 and the insertion connector 720 is always stable, fundamentally reducing the risk of high-pressure leakage.

[0043] refer to Figure 3 and Figure 4 The transmission assembly 400 includes a driving wheel 410, a driven wheel 420, and a toothed groove 430. The driving wheel 410 is connected to the output end of the drive member 100, and the driven wheel 420 is engaged with the surface of the driving wheel 410. The toothed groove 430 is formed on the inner wall of the rear housing 200, and the side of the driven wheel 420 away from the driving wheel 410 engages with the toothed groove 430. Through the interlocking of the teeth of the driving wheel 410, the driven wheel 420, and the toothed groove 430, the radial displacement of each component during movement can be limited. Even if the pump body vibrates under high pressure, the meshing teeth can offset some of the vibration energy through mutual restraint, reduce the "impact" in the power transmission process, ensure the uniformity of the rotational speed of the rolling assembly 600 driven by the transmission assembly 400, and thus stabilize the flow output of the pump pipe 500.

[0044] A retaining ring 900 is provided between the rolling assembly 600 and the transmission assembly 400. The retaining ring 900 is located between the driven wheel 420 and the pump pipe 500. The retaining ring 900 can act as a physical barrier to completely isolate the driven wheel 420 and the pump pipe 500, avoid direct contact between the two, protect the pump pipe 500 from mechanical damage from the source, and extend its service life.

[0045] refer to Figure 5 The rolling assembly 600 includes a bracket 610, a connecting shaft 620, and a rotor 630. The bracket 610 is rotatably connected to the connecting shaft 620. The end of the connecting shaft 620 away from the bracket 610 is connected to the driven wheel 420. The rotor 630 is sleeved on the surface of the connecting shaft 620. By using a rotatable connection (such as bearing engagement) between the bracket 610 and the connecting shaft 620, the connecting shaft 620 can rotate flexibly relative to the bracket 610. The rotor 630, sleeved on the surface of the connecting shaft 620, directly contacts and squeezes the pump pipe 500. When the pump pipe 500 deforms due to high-pressure fluid or its own elasticity, the rotor 630 can adaptively adjust the squeezing angle through the rotation of the connecting shaft 620, ensuring that the rotor 630 is always in contact with the surface of the pump pipe 500, avoiding "jamming" or "pressure leakage" caused by rigid contact, ensuring a uniform fluid delivery volume for each rolling operation, and improving flow stability.

[0046] There are three driven wheels 420, and the number of rotors 630 corresponds to the number of driven wheels 420. The three rotors 630 form an equilateral triangle. Through the equilateral triangle formed by the three rotors 630, a closed "compression triangle area" can be formed on the surface of the pump pipe 500. This makes the distance between adjacent rotors 630 equal, and the compression force on the pump pipe 500 is more continuous, which can effectively block the backflow path of high-pressure fluid. Especially when conveying high-pressure fluid, this continuous and symmetrical compression can improve the sealing performance of the pump pipe 500, avoid "leakage" caused by insufficient local sealing, and ensure the efficiency of unidirectional fluid delivery.

[0047] The bracket 610 has a positioning hole 640 on its surface, which works in conjunction with the limiting block 830. The engagement of the positioning hole 640 and the limiting block 830 constitutes "rigid positioning", which allows the relative position of the bracket 610 and the pressure cap assembly 800 to be quickly determined during assembly by shape matching. This facilitates quick positioning by the user and makes it easier to assemble the high-pressure peristaltic pump.

[0048] The implementation principle of this application embodiment is as follows: In implementation, by inserting one end of the insertion connector 720 near the second nut 730 into the pump pipe 500, and rotating the second nut 730, the second nut 730 is threadedly connected to the insertion connector 720, thereby fixing and sealing the pump pipe 500 and the insertion connector 720. Simultaneously, the other end of the insertion connector 720 is inserted into the pipe, and the first nut 710 is rotated to connect with the threaded groove 760 on the insertion connector 720, fixing and sealing the pipe, thus completing the installation. For disassembly and replacement, simply rotate the first nut 710 to remove it from the insertion connector 720, allowing the pipe to be removed and replaced. This facilitates installation, disassembly, and replacement for the user, reducing maintenance time. During pump body assembly, the pump pipe 500 is fitted onto the surface of the rotor 630 after installation. The drive wheel 410 and driven wheel 420 mesh within the toothed groove 430 of the rear housing 200. Then, the retaining ring 900 is positioned between the driven wheel 420 and the pump pipe 500. The connecting shaft 620 on the bracket 610 passes through the rotor 630 and connects to the driven wheel 420. Then, the locking block 820 on the support rod 810 of the gland assembly 800 is engaged with the rear housing 200, and the limiting block 830 is engaged with the positioning hole 640 on the bracket 610, thus positioning the transmission assembly 400 and the rolling assembly 600. Then, the front housing 300 can be installed. The transmission assembly 400 and the rolling assembly 600 are positioned by the gland assembly 800, so they will not fall apart when the front housing 300 is installed, which facilitates the installation of the front housing 300. At the same time, during maintenance, the pump body can be operated normally after the front housing 300 is disassembled, which is convenient for the user to observe the working condition and perform maintenance.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-pressure peristaltic pump that is easy to assemble, comprising a drive unit (100), a rear housing (200), a front housing (300), a transmission assembly (400), a pump tube (500), and a rolling assembly (600) for controlling flow in the pump tube (500), characterized in that, The top of the pump pipe (500) is provided with a threaded joint assembly (700) for pipe connection, and a pressure cap assembly (800) for pressing the rolling assembly (600) and the transmission assembly (400) is provided between the rolling assembly (600) and the front housing (300). The threaded connector assembly (700) includes a first nut (710) for fixed connection to the pipe, an insertion connector (720) for connection to the pump pipe (500) and the pipe, and a second nut (730) for fixed connection to the pump pipe (500). The insertion connector (720) has threaded grooves (760) on both ends of its surface, which are respectively threaded to the first nut (710) and the second nut (730). The first nut (710) is located at the end of the insertion connector (720) away from the pump pipe (500), and the second nut (730) is located at the end of the insertion connector (720) inserted into the pump pipe (500). The cap assembly (800) includes a Z-shaped support rod (810), a locking block (820) for connecting to the rear shell (200), and a limiting block (830) for limiting the rolling assembly (600), wherein the locking block (820) and the limiting block (830) are both mounted on the support rod (810).

2. The high-pressure resistant peristaltic pump that is easy to assemble according to claim 1, characterized in that, The second nut (730) is provided with a positioning groove (750) for fixing the second nut (730) and the rear shell (200). The rear shell (200) is connected with a positioning block (740) that cooperates with the positioning groove (750). The positioning block (740) and the positioning groove (750) are connected by a snap-fit.

3. The high-pressure resistant peristaltic pump that is easy to assemble according to claim 1, characterized in that, The transmission assembly (400) includes a drive wheel (410), a driven wheel (420), and a toothed groove (430). The drive wheel (410) is connected to the output end of the drive member (100). The driven wheel (420) is engaged with the surface of the drive wheel (410). The toothed groove (430) is formed on the inner wall of the rear shell (200). The side of the driven wheel (420) away from the drive wheel (410) engages with the toothed groove (430).

4. The high-pressure resistant peristaltic pump that is easy to assemble according to claim 3, characterized in that, A retaining ring (900) is provided between the rolling assembly (600) and the transmission assembly (400), and the retaining ring (900) is located between the driven wheel (420) and the pump pipe (500).

5. The high-pressure resistant peristaltic pump that is easy to assemble according to claim 3, characterized in that, The rolling assembly (600) includes a bracket (610), a connecting shaft (620), and a rotor (630). The bracket (610) is rotatably connected to the connecting shaft (620). One end of the connecting shaft (620) away from the bracket (610) is connected to a driven wheel (420). The rotor (630) is sleeved on the surface of the connecting shaft (620).

6. The high-pressure resistant peristaltic pump that is easy to assemble according to claim 5, characterized in that, The number of driven wheels (420) is three, and the number of rotors (630) corresponds to the number of driven wheels (420). The three rotors (630) form an equilateral triangle.

7. The high-pressure resistant peristaltic pump that is easy to assemble according to claim 5, characterized in that, The bracket (610) has a positioning hole (640) on its surface, which is used in conjunction with the limiting block (830).

8. The high-pressure resistant peristaltic pump that is easy to assemble according to claim 1, characterized in that, The drive unit (100) is fixedly connected to the rear shell (200) by bolts, and the output end of the drive unit (100) extends into the rear shell (200).

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