Cooling liquid circulating peristaltic pump for heat dissipation for optical crystal processing

Abstract

The invention belongs to the technical field of peristaltic pumps, and particularly discloses a cooling liquid circulating peristaltic pump for heat dissipation for optical crystal processing, which comprises a mounting shell, a motor is arranged on one side of the mounting shell, a retaining shell is detachably arranged on the other side of the mounting shell, and two mounting holes are formed in each of the opposite sides of the mounting shell and the retaining shell. Every two corresponding mounting holes are in butt joint to form a mounting groove, a groove is formed in the inner wall of each mounting hole, and a mounting pipe is arranged in each mounting groove. By arranging an extrusion mechanism composed of a second spring, a sliding rod, a sliding block and the like, an extrusion gap generated due to abrasion of the hose can be compensated in real time, the mechanism can continuously push an extrusion wheel to be tightly attached to the hose in the whole service life period of the hose, constant extrusion force is maintained, and the service life of the hose is prolonged. Therefore, flow and pressure attenuation caused by abrasion of a hose of a traditional peristaltic pump is effectively avoided, and the stability of cooling liquid supply and the reliability of the heat dissipation effect in the optical crystal machining process are guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of peristaltic pump technology, and specifically discloses a peristaltic pump for cooling and heat dissipation in optical crystal processing. Background Technology

[0002] As an important fluid transport device, the peristaltic pump works by periodically squeezing a flexible hose with a rotating extrusion wheel (or pressure block), creating negative pressure inside the hose and driving the fluid to flow in a specific direction. This operating method ensures that the fluid being transported only comes into contact with the inner wall of the hose, completely isolating it from the pump's mechanical moving parts. This avoids cross-contamination, metal ion release, and leakage risks associated with mechanical seals. This makes it ideal for fluid transport in optical crystal processing, as the fluid extrusion process is relatively gentle and does not generate high shear forces that could damage or alter the properties of certain polymer additives that may be added to the coolant.

[0003] After prolonged use, the hose of a traditional peristaltic pump wears down, creating a gap between the extrusion wheel and the hose. This results in a reduction in the single extrusion volume, as well as a decrease in outlet pressure and flow rate. This gradual performance degradation subtly alters the heat exchange efficiency of the cooling system, causing temperature control in the crystal processing area to drift, ultimately affecting processing accuracy and product consistency.

[0004] Therefore, those skilled in the art have proposed a peristaltic pump for cooling fluid circulation in optical crystal processing to solve the problems mentioned above. Summary of the Invention

[0005] In view of this, the technical problem to be solved by the present invention is to provide a circulating peristaltic pump for cooling in optical crystal processing, so as to solve the problem of the pumping effect affected by hose wear in the prior art.

[0006] To achieve the above objectives, the present invention provides a circulating peristaltic pump for cooling in optical crystal processing, comprising a mounting housing, a motor disposed on one side of the mounting housing, and a detachable baffle disposed on the other side of the mounting housing. Two mounting holes are provided on opposite sides of both the mounting housing and the baffle, and corresponding two mounting holes are joined to form a mounting groove. A groove is formed on the inner wall of each mounting hole, and a mounting tube is disposed inside the mounting groove. A protrusion corresponding to the groove is fixedly connected to the surface of each mounting tube. A flexible hose connects to opposite sides of the two mounting tubes. A connecting pipe connected to the adjacent mounting tube is detachably disposed on the surfaces of the mounting housing and the baffle. A pressing mechanism is provided inside the mounting housing, and an indicating mechanism is provided inside the baffle.

[0007] The extrusion mechanism includes a tray disposed inside the mounting housing. A mounting shaft is fixedly connected to the surface of the tray. A drive groove is formed on the inner wall of the mounting shaft. The output shaft of the motor passes through the mounting housing and engages with the inner wall of the drive groove. Three guide blocks arranged in a ring are slidably connected to the surface of the tray. A rotating shaft is rotatably connected to the surface of the guide blocks. An extrusion wheel is fixedly connected to the surface of the rotating shaft. An adjustment component is provided between the rotating shaft and the mounting shaft.

[0008] In the above technical solution, preferably, the adjustment component includes two rotating rings sleeved on the surface of the rotating shaft. The rotating shaft is rotatably connected to the inner wall of the rotating rings. A fixed cylinder corresponding to the rotating rings is fixedly connected to the surface of the mounting shaft. A slider is slidably connected to the inner wall of the fixed cylinder. A sliding rod is fixedly connected to one side of the slider. The other end of the sliding rod passes through the fixed cylinder and is fixedly connected to the surface of the rotating rings.

[0009] In the above technical solution, preferably, a second spring is sleeved on the surface of the slide rod, one end of the second spring is fixedly connected to the surface of the slider, and the other end of the second spring is fixedly connected to the inner wall of the fixed cylinder, and a liquid storage area is formed between the end of the slider near the slide rod and the inner wall of the fixed cylinder.

[0010] In the above technical solution, preferably, an installation area is formed between the other side of the slider and the fixed cylinder, a pressure sensor is fixedly connected to the inner wall of the installation area, a buffer pad is provided on one side of the pressure sensor, and a first spring is fixedly connected between the buffer pad and the slider.

[0011] In the above technical solution, preferably, a connecting shell is fixedly connected to the surface of the fixed cylinder, a connecting cavity is opened inside the mounting shaft, a guide channel communicating with the adjustment area is opened inside the fixed cylinder, the other end of the guide channel is connected with the connecting cavity, and a connecting channel communicating with the connecting cavity is opened at the end of the mounting shaft away from the tray.

[0012] In the above technical solution, preferably, an installation ring is fixedly connected to the inner wall of the connecting channel, a baffle is provided on the side of the installation ring near the tray, the baffle covers the inner hole of the installation ring, and a third spring is fixedly connected to the other side of the baffle, the other end of the third spring is fixedly connected to the inner wall of the connecting channel.

[0013] In the above technical solution, preferably, the indicating mechanism includes a mounting plate fixedly connected to the inner side of the baffle, one side of the mounting plate is provided with a connecting groove corresponding to the end of the mounting shaft, and the other side of the mounting plate is fixedly connected with a fixing rod, the other end of the fixing rod passing through the baffle and provided with a buzzer.

[0014] In the above technical solution, preferably, a slip ring is rotatably connected to the inner wall of the connecting groove, a plug rod is fixedly connected to one side of the slip ring, a cavity is opened inside the plug rod, the diameter of the plug rod corresponds to the inner diameter of the mounting ring, a discharge hole communicating with the cavity is opened on the surface of the plug rod, a through hole communicating with the cavity is opened on the surface of the slip ring, a retaining ring is slidably connected to the surface of the plug rod, and the retaining ring blocks the discharge hole, and a fourth spring is fixedly connected to one side of the retaining ring and the surface of the slip ring.

[0015] In the above technical solution, preferably, the fixed rod has a rotating cavity inside, and an indicator plate is rotatably connected to the inner wall of the rotating cavity. The fixed rod has an adjusting cavity inside, and a sliding block is slidably connected to the inner wall of the adjusting cavity. A connecting rod is fixedly connected to one side of the sliding block, and the other end of the connecting rod is fixedly connected to the surface of the indicator plate. A fixed block is also fixedly connected to the inner wall of the adjusting cavity. A driving cavity is formed between the side of the fixed block and the sliding block that is far away from each other and the interior of the adjusting cavity. A fifth spring is fixedly connected between the other side of the sliding block and the fixed block.

[0016] In the above technical solution, preferably, the fixed rod has a flow channel inside that communicates with the driving cavity, the other end of the flow channel is connected to the adjacent through hole, and a transparent plate is embedded on the side of the fixed rod away from the mounting plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By setting up a squeezing mechanism consisting of a second spring, a slide bar, and a slider, the squeezing gap caused by hose wear can be compensated in real time. Throughout the entire service life of the hose, the mechanism can continuously push the squeezing wheel to keep it close to the hose and maintain a constant squeezing force. This effectively avoids the flow and pressure reduction caused by hose wear in traditional peristaltic pumps, and ensures the stability of coolant supply and the reliability of heat dissipation during optical crystal processing.

[0019] 2. By setting a pressure sensor, the pressure applied to the pressure sensor can be changed by the positional offset of the slider during compensation, and the wear of the hose can be converted into a monitorable pressure signal. When the wear reaches a preset threshold, the controller can trigger a buzzer alarm to achieve early warning of the fault.

[0020] 3. By setting up an indicator plate mechanism linked to the hydraulic circuit, the internal wear status is converted into an externally visible position movement marked with color, allowing operators to quickly and intuitively determine the remaining life of the hose without disassembling the machine. At the same time, the detachable connection between the baffle and the mounting shell, as well as the hydraulic oil self-sealing design formed by the mounting ring and the baffle, make it easy to disassemble relevant components when replacing hoses or performing maintenance, while ensuring that the hydraulic system does not leak or contaminate the coolant circuit. Maintenance operations are simple, clean, and efficient. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a partial explosion diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the extrusion mechanism of the present invention;

[0024] Figure 4 This is a partial cross-sectional schematic diagram of the extrusion mechanism of the present invention;

[0025] Figure 5 for Figure 4 Enlarged view of A in the middle;

[0026] Figure 6 This is a schematic diagram showing the distribution of the mounting ring, the third spring, and the baffle in this invention;

[0027] Figure 7 This is a schematic diagram of the structure of the indicating mechanism of the present invention;

[0028] Figure 8 This is a schematic diagram showing the connection of the fourth spring, insert rod, retaining ring, and slip ring of the present invention;

[0029] Figure 9 This is a schematic diagram showing the connection of the indicator plate, sliding block, fixing block and fourth spring of the present invention.

[0030] In the diagram: 1. Mounting housing; 101. Motor; 102. Baffle; 2. Connecting pipe; 201. Hoses; 202. Mounting pipe; 203. Protrusion; 3. Extrusion mechanism; 301. Tray; 302. Mounting shaft; 303. Rotating shaft; 304. Extrusion wheel; 305. Fixed cylinder; 306. Third spring; 307. Rotary ring; 308. Connecting housing; 309. Baffle; 310. Connecting cavity; 311. Connecting channel; 312. Pressure sensor; 313. Guide Flow channel; 314, First spring; 315, Second spring; 316, Slide rod; 317, Slider; 318, Mounting ring; 4, Indicating mechanism; 401, Slip ring; 402, Mounting plate; 403, Fixed rod; 404, Indicating plate; 405, Adjusting cavity; 406, Flow channel; 407, Insert rod; 408, Retaining ring; 409, Discharge hole; 410, Fourth spring; 411, Through hole; 412, Sliding block; 413, Fixed block; 414, Fifth spring. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0033] like Figures 1-9 The illustrated cooling fluid circulating peristaltic pump for optical crystal processing includes a mounting housing 1. A motor 101 is provided on one side of the mounting housing 1, and a baffle 102 is detachably provided on the other side of the mounting housing 1. Two mounting holes are provided on opposite sides of the mounting housing 1 and the baffle 102. The two corresponding mounting holes are joined together to form a mounting groove. A groove is provided on the inner wall of the mounting hole. A mounting tube 202 is provided inside the mounting groove. A protrusion 203 corresponding to the groove is fixedly connected to the surface of the mounting tube 202. A hose 201 is connected to the opposite sides of the two mounting tubes 202. A connecting tube 2 connected to the adjacent mounting tube 202 is detachably provided on the surface of the mounting housing 1 and the baffle 102. A squeezing mechanism 3 is provided on the inner side of the mounting housing 1, and an indicating mechanism 4 is provided on the inner side of the baffle 102.

[0034] The extrusion mechanism 3 includes a tray 301 disposed inside the mounting shell 1. A mounting shaft 302 is fixedly connected to the surface of the tray 301. A drive groove is provided on the inner wall of the mounting shaft 302. The output shaft of the motor 101 passes through the mounting shell 1 and engages with the inner wall of the drive groove. Three guide blocks are slidably connected to the surface of the tray 301 and arranged in a ring. A rotating shaft 303 is rotatably connected to the surface of the guide blocks. An extrusion wheel 304 is fixedly connected to the surface of the rotating shaft 303. An adjustment component is provided between the rotating shaft 303 and the mounting shaft 302.

[0035] Specifically, the installation tube 202 facilitates the installation of the hose 201. The hose 201 is installed in a U-shape between the mounting shell 1 and the baffle 102 with the extrusion mechanism 3 as the center. The protrusion 203 is designed to cooperate with the groove to start the installation of the installation tube 202. The baffle 102 can be fixed to the mounting shell 1 with bolts. The cooperation of the installation tube 202, the protrusion 203 and the groove can reduce the displacement of the hose 201 during the driving process.

[0036] By starting the motor 101, the mounting shaft 302 can be rotated, which in turn drives the rotating shaft 303 to rotate around the mounting shaft 302. During the rotation, the extrusion wheel 304 can be rotated synchronously, thereby achieving the purpose of extruding the hose 201, thus creating a negative pressure inside the hose. The fluid is pumped by alternately extruding and releasing the elastic delivery hose 201.

[0037] like Figures 1-9 As shown, the adjustment assembly includes two rotating rings 307 sleeved on the surface of the rotating shaft 303. The rotating shaft 303 is rotatably connected to the inner wall of the rotating rings 307. A fixed cylinder 305 corresponding to the rotating rings 307 is fixedly connected to the surface of the mounting shaft 302. A slider 317 is slidably connected to the inner wall of the fixed cylinder 305. A slide rod 316 is fixedly connected to one side of the slider 317. The other end of the slide rod 316 passes through the fixed cylinder 305 and is fixedly connected to the surface of the rotating rings 307.

[0038] A second spring 315 is sleeved on the surface of the slide bar 316. One end of the second spring 315 is fixedly connected to the surface of the slider 317, and the other end of the second spring 315 is fixedly connected to the inner wall of the fixed cylinder 305. A liquid storage area is formed between the end of the slider 317 near the slide bar 316 and the inner wall of the fixed cylinder 305.

[0039] An installation area is formed between the other side of the slider 317 and the fixed cylinder 305. A pressure sensor 312 is fixedly connected to the inner wall of the installation area. A buffer pad is provided on one side of the pressure sensor 312. A first spring 314 is fixedly connected between the buffer pad and the slider 317.

[0040] Specifically, the device also includes a controller for controlling the start of the motor 101 and receiving transmitted signals.

[0041] As the pump body operates for a long time, wear will occur on the surface of the hose 201, resulting in gaps in the compression of the hose 201 by the compression wheel 304, which leads to a decrease in compression force and affects the pumping effect.

[0042] By setting a second spring 315, the slide bar 316 can drive the rotating ring 307 to make the squeezing wheel 304 fit tightly against the surface of the hose 201, avoiding poor contact due to wear that would affect the pumping effect. As the slide bar 316 moves, it can stretch the first spring 314, thereby reducing the squeezing of the buffer pad and thus reducing the squeezing of the pressure sensor 312. If the pressure exceeds the preset value, the signal can be transmitted to the controller, which will then activate the buzzer alarm so that the staff can replace the hose 201 in time.

[0043] like Figures 1-9 As shown, a connecting shell 308 is fixedly connected to the surface of the fixed cylinder 305, a connecting cavity 310 is opened inside the mounting shaft 302, a guide channel 313 communicating with the adjustment area is opened inside the fixed cylinder 305, the other end of the guide channel 313 is connected with the connecting cavity 310, and a connecting channel 311 communicating with the connecting cavity 310 is opened at the end of the mounting shaft 302 away from the tray 301.

[0044] An installation ring 318 is fixedly connected to the inner wall of the connecting channel 311. A baffle 309 is provided on the side of the installation ring 318 near the tray 301. The baffle 309 covers the inner hole of the installation ring 318, and a third spring 306 is fixedly connected to the other side of the baffle 309. The other end of the third spring 306 is fixedly connected to the inner wall of the connecting channel 311.

[0045] Specifically, the connecting cavity 310, the guide channel 313, the connecting channel 311 and the adjustment area are all filled with hydraulic oil, so that the hydraulic oil can be squeezed and discharged through the connecting channel 311 by changing the space in the adjustment area during the movement of the slider 317.

[0046] The cooperation of the mounting ring 318, the third spring 306, and the baffle 309 can seal the connecting channel 311 after the baffle 102 is disassembled to prevent hydraulic oil leakage.

[0047] like Figures 1-9 As shown, the indicating mechanism 4 includes a mounting plate 402 fixedly connected to the inside of the baffle 102. One side of the mounting plate 402 is provided with a connecting groove corresponding to the end of the mounting shaft 302. The other side of the mounting plate 402 is fixedly connected with a fixing rod 403. The other end of the fixing rod 403 passes through the baffle 102 and is provided with a buzzer.

[0048] A slip ring 401 is rotatably connected to the inner wall of the connecting groove. A plug rod 407 is fixedly connected to one side of the slip ring 401. A cavity is opened inside the plug rod 407. The diameter of the plug rod 407 corresponds to the inner diameter of the mounting ring 318. A discharge hole 409 communicating with the cavity is opened on the surface of the plug rod 407. A through hole 411 communicating with the cavity is opened on the surface of the slip ring 401. A retaining ring 408 is slidably connected to the surface of the plug rod 407, and the retaining ring 408 blocks the discharge hole 409. A fourth spring 410 is fixedly connected to one side of the retaining ring 408 and the surface of the slip ring 401.

[0049] The fixed rod 403 has a rotating cavity inside, and an indicator plate 404 is rotatably connected to the inner wall of the rotating cavity. The fixed rod 403 has an adjusting cavity 405 inside, and a sliding block 412 is slidably connected to the inner wall of the adjusting cavity 405. A connecting rod is fixedly connected to one side of the sliding block 412, and the other end of the connecting rod is fixedly connected to the surface of the indicator plate 404. A fixed block 413 is also fixedly connected to the inner wall of the adjusting cavity 405. The side of the fixed block 413 that is far away from the sliding block 412 forms a driving cavity with the inside of the adjusting cavity 405. A fifth spring 414 is fixedly connected between the other side of the sliding block 412 and the fixed block 413.

[0050] The fixed rod 403 has a flow channel 406 inside that communicates with the drive cavity. The other end of the flow channel 406 is connected to the adjacent through hole 411. A transparent plate is embedded on the side of the fixed rod 403 away from the mounting plate 402.

[0051] Specifically, the interior of the cavity, flow channel 406, and drive cavity is also filled with hydraulic oil.

[0052] During the installation of the retaining shell 102, the insert rod 407 can be inserted into the interior of the mounting ring 318 and push the baffle 309 to compress the third spring 306. During this process, due to the obstruction of the surface of the mounting ring 318, the retaining ring 408 can be pushed to slide along the surface of the insert rod 407, and the fourth spring 410 is squeezed simultaneously until it is installed in place. At this time, the cavity can be connected to the connecting channel 311 through the discharge hole 409, so that hydraulic oil can flow into the interior of the cavity.

[0053] After installation, as the wear of the hose 201 increases, the compression wheel 304 gradually moves away from the mounting shaft 302, thereby gradually increasing the amount of hydraulic oil injected into the drive chamber. This pushes the sliding block 412 to slide along the inner wall of the adjustment chamber 405 and compresses the fifth spring 414, which in turn drives the indicator plate 404 to move synchronously. During this process, the position of the indicator plate 404 can be observed through a transparent plate. Two different colors can be set on the indicator plate 404 to easily distinguish whether the hose 201 has been excessively worn, so that the staff can replace it in time.

[0054] Working principle: Starting the motor 101 drives the mounting shaft 302 to rotate, which in turn drives the rotating shaft 303 to rotate around the mounting shaft 302. During this rotation, the squeezing wheel 304 rotates synchronously, thus squeezing the hose 201 and creating negative pressure inside. The elastic delivery hose 201 alternately squeezes and releases to pump fluid. During operation, the second spring 315 drives the slide rod 316 to push the rotating ring 307, which in turn causes the squeezing wheel 304 to press tightly against the surface of the hose 201, preventing wear and tear that could affect the pumping effect. Furthermore, the movement of the slide rod 316 stretches the first spring 314, reducing pressure on the buffer pad and thus reducing pressure on the pressure sensor 312. When the pressure exceeds a preset value, a signal is transmitted to the controller, which then activates a buzzer alarm to allow staff to replace the hose 201 in a timely manner. Simultaneously, by setting an indicator mechanism 4, after installation, as the wear of the hose 201 increases, the pressure roller 304 gradually moves away from the mounting shaft 302, thereby gradually increasing the injection of hydraulic oil into the drive chamber. This pushes the sliding block 412 to slide along the inner wall of the adjustment chamber 405 and compresses the fifth spring 414, which in turn drives the indicator plate 404 to move synchronously. During this process, the position of the indicator plate 404 can be observed through a transparent plate. The indicator plate 404 can be set with two different colors to easily distinguish whether the hose 201 has excessive wear, so that staff can replace it in a timely manner.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A cooling liquid circulating peristaltic pump for heat dissipation in optical crystal processing, comprising a mounting case (1), characterized in that, One side of the installation shell (1) is provided with a motor (101), the other side of the installation shell (1) is detachably provided with a blocking shell (102), the opposite sides of the installation shell (1) and the blocking shell (102) are both provided with two installation holes, the corresponding two installation holes are connected to form an installation slot, the inner wall of the installation hole is provided with a groove, the inside of the installation slot is provided with an installation pipe (202), the surface of the installation pipe (202) is fixedly connected with a protrusion (203) corresponding to the groove, the opposite sides of the two installation pipes (202) are communicated with a hose (201), the surfaces of the installation shell (1) and the blocking shell (102) are detachably provided with a connecting pipe (2) communicated with the adjacent installation pipe (202), the inner side of the installation shell (1) is provided with an extrusion mechanism (3), the inner side of the blocking shell (102) is provided with an indicating mechanism (4). The extrusion mechanism (3) includes a tray (301) arranged on the inner side of the installation shell (1), the surface of the tray (301) is fixedly connected with an installation shaft (302), the inner wall of the installation shaft (302) is provided with a driving groove, the output shaft of the motor (101) penetrates the installation shell (1) and is clamped with the inner wall of the driving groove, the surface of the tray (301) is slidably connected with three guide blocks arranged in a ring shape, the surface of the guide block is rotatably connected with a rotating shaft (303), the surface of the rotating shaft (303) is fixedly connected with an extrusion wheel (304), and the rotating shaft (303) and the installation shaft (302) are provided with an adjusting assembly.

2. The peristaltic pump according to claim 1, wherein The adjusting assembly includes two rotating rings (307) sleeved on the surface of the rotating shaft (303), the rotating shaft (303) and the inner wall of the rotating ring (307) are rotatably connected, the surface of the installation shaft (302) is fixedly connected with a fixed cylinder (305) corresponding to the rotating ring (307), the inner wall of the fixed cylinder (305) is slidably connected with a sliding block (317), one side of the sliding block (317) is fixedly connected with a sliding rod (316), and the other end of the sliding rod (316) penetrates out of the fixed cylinder (305) and is fixedly connected with the surface of the rotating ring (307).

3. The peristaltic pump according to claim 2, wherein The surface of the sliding rod (316) is sleeved with a second spring (315), one end of the second spring (315) is fixedly connected with the surface of the sliding block (317), the other end of the second spring (315) is fixedly connected with the inner wall of the fixed cylinder (305), and the other end of the sliding block (317) close to the sliding rod (316) and the inner wall of the fixed cylinder (305) form a liquid storage area.

4. The peristaltic pump according to claim 3, wherein The other side of the sliding block (317) and the fixed cylinder (305) form an installation area, the inner wall of the installation area is fixedly connected with a pressure sensor (312), one side of the pressure sensor (312) is provided with a buffer pad, and the buffer pad and the sliding block (317) are fixedly connected with a first spring (314).

5. The peristaltic pump according to claim 4, wherein The surface of the fixed cylinder (305) is fixedly connected with a connecting shell (308), the inside of the mounting shaft (302) is provided with a connecting cavity (310), the inside of the fixed cylinder (305) is provided with a flow guide channel (313) which is communicated with the adjusting area, the other end of the flow guide channel (313) is communicated with the connecting cavity (310), and the end of the mounting shaft (302) which is away from the tray (301) is provided with a connecting channel (311) which is communicated with the connecting cavity (310).

6. The peristaltic pump according to claim 5, wherein The inner wall of the connecting channel (311) is fixedly connected with a mounting ring (318), one side of the mounting ring (318) close to the tray (301) is provided with a baffle (309), the inner hole of the mounting ring (318) is shielded by the baffle (309), and the other side of the baffle (309) is fixedly connected with a third spring (306); the other end of the third spring (306) is fixedly connected with the inner wall of the connecting channel (311).

7. The peristaltic pump according to claim 2, wherein The indicating mechanism (4) comprises a mounting disc (402) which is fixedly connected to the inner side of the baffle shell (102), one side of the mounting disc (402) is provided with a connecting groove which corresponds to the end of the mounting shaft (302), and the other side of the mounting disc (402) is fixedly connected with a fixed rod (403); the other end of the fixed rod (403) penetrates through the baffle shell (102) and is provided with a buzzer.

8. The peristaltic pump according to claim 7, wherein The inner wall of the connecting groove is rotationally connected with a sliding ring (401), one side of the sliding ring (401) is fixedly connected with a plug rod (407), the inside of the plug rod (407) is provided with a cavity, the diameter of the plug rod (407) corresponds to the inner diameter of the mounting ring (318), the surface of the plug rod (407) is provided with a discharge hole (409) which is communicated with the cavity, the surface of the sliding ring (401) is provided with a through hole (411) which is communicated with the cavity, and the surface of the plug rod (407) is slidably connected with a baffle ring (408) which shields the discharge hole (409); one side of the baffle ring (408) is fixedly connected with a fourth spring (410) on the surface of the sliding ring (401).

9. The peristaltic pump according to claim 8, wherein The inside of the fixed rod (403) is provided with a rotating cavity, the inner wall of the rotating cavity is rotationally connected with an indicating plate (404), the inside of the fixed rod (403) is provided with an adjusting cavity (405), the inner wall of the adjusting cavity (405) is slidably connected with a sliding block (412), one side of the sliding block (412) is fixedly connected with a connecting rod, the other end of the connecting rod is fixedly connected with the surface of the indicating plate (404), the inner wall of the adjusting cavity (405) is further fixedly connected with a fixed block (413), the side of the fixed block (413) which is away from the sliding block (412) forms a driving cavity with the inside of the adjusting cavity (405), and the other side of the sliding block (412) and the fixed block (413) is fixedly connected with a fifth spring (414).

10. The peristaltic pump according to claim 9, wherein The fixed rod (403) is internally provided with a flow channel (406) in communication with the driving cavity, another end of the flow channel (406) is in communication with the adjacent through hole (411), and a transparent plate is embedded on the side of the fixed rod (403) away from the mounting disc (402).

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