Feeding peristaltic pump and using method

Abstract

The invention belongs to the technical field of peristaltic pumps, and particularly discloses a feeding peristaltic pump and a using method.The feeding peristaltic pump comprises a motor and a mounting shell, the motor is arranged on one side of the mounting shell, a connecting shell is arranged on the other side of the mounting shell, and uniformly-distributed mounting bolts are arranged on the surface of the connecting shell; one end of the mounting bolt penetrates through the connecting shell and is in threaded connection with the inner wall of the mounting shell, and a mounting cavity is formed between the opposite sides of the mounting shell and the connecting shell; raw materials are filtered on line through the built-in filter ring, large-particle impurities are effectively intercepted, the hose is prevented from being abraded or punctured in the extrusion process, and the service life of the hose is remarkably prolonged. Meanwhile, the filter ring can be automatically flushed and impurities can be discharged when the filter ring is blocked, so that on-line maintenance without shutdown and disassembly is realized, the continuity and stability of material conveying are ensured, the impurities are fundamentally prevented from entering a reaction system, and the production purity of medical intermediates is ensured.

Description

Technical Field

[0001] This invention belongs to the field of peristaltic pump technology, and specifically discloses a feeding peristaltic pump and its usage method. Background Technology

[0002] Currently, peristaltic pumps are widely used in the production of pharmaceutical intermediates as a solution for precision fluid delivery and feeding. Their working principle involves periodically squeezing an elastic tubing with rollers or pressure blocks, creating negative and positive pressures within the tubing to achieve directional and quantitative fluid delivery. This design offers significant advantages: the delivered fluid only contacts the inner wall of the tubing, achieving excellent sealing and preventing contamination of the material by the pump itself. It is also easy to clean and sterilize, making it highly suitable for pharmaceutical production environments with stringent hygiene and cross-contamination requirements.

[0003] However, during use, the hose is subjected to long-term cyclical stress, making it prone to fatigue and wear. Especially when conveying materials containing incompletely dissolved crystalline particles, catalyst carriers, or other trace solid impurities, these hard particles will exacerbate the internal friction and local stress of the hose wall during the compression process, significantly accelerating hose breakage.

[0004] Therefore, those skilled in the art have proposed a feeding peristaltic pump and its usage method 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 feeding peristaltic pump and a method of use, so as to solve the problem that the hoses in the prior art are prone to breakage.

[0006] To achieve the above objectives, the present invention provides a feeding peristaltic pump, including a motor and a mounting housing. The motor is disposed on one side of the mounting housing, and a connecting housing is disposed on the other side of the mounting housing. The surface of the connecting housing is provided with evenly distributed mounting bolts. One end of each mounting bolt passes through the connecting housing and is threadedly connected to the inner wall of the mounting housing. An installation cavity is formed between the opposite sides of the mounting housing and the connecting housing. A driving structure is disposed on the inner wall of the installation cavity. A flexible hose structure is disposed between the surface of the driving structure and the inner wall of the installation cavity. Both ends of the flexible hose structure extend out of the installation cavity. The hose structure includes a hose body, with mounting cylinders fixedly connected to both ends of the hose body. Two symmetrically distributed limiting blocks are fixedly connected to the surface of the mounting cylinder. The inner wall of the mounting cavity is provided with limiting grooves corresponding to the limiting blocks. The limiting blocks are made of magnetic material, and the limiting grooves are filled with magnetic metal material.

[0007] In the above technical solution, preferably, one end of the mounting cylinder is connected to a connector, and the other end of the connector extends through the mounting cavity.

[0008] In the above technical solution, preferably, a connecting ring is fixedly connected to the end of the hose body, the surface of the connecting ring is fixedly connected to the inner side of the mounting cylinder, a positioning plate located on the side of the connecting ring away from the hose body is fixedly connected to the inner wall of the mounting cylinder, a filter ring is fixedly connected between the positioning plate and the connecting ring, a collection cavity is formed between the outer side of the filter ring and the inner wall of the mounting cylinder, the inner side of the filter ring is connected to the hose body through the central hole of the connecting ring, and the surface of the positioning plate is provided with uniformly distributed through holes that are connected to the collection cavity.

[0009] In the above technical solution, preferably, the surface of the mounting cylinder is provided with a discharge pipe that communicates with the collection chamber, the inner wall of the discharge pipe is fixedly connected with a fixing plate, the bottom of the fixing plate is fixedly connected with a fixing rod, and the surface of the fixing rod is slidably connected with a sealing plate that is slidably connected to the inner wall of the discharge pipe.

[0010] In the above technical solution, preferably, a first spring is fixedly connected between the top of the sealing plate and the surface of the fixing plate.

[0011] In the above technical solution, preferably, the surface of the fixing rod is provided with a through groove located below the sealing plate.

[0012] In the above technical solution, preferably, the drive structure includes a connecting shaft disposed inside the mounting cavity, the output shaft of the motor passes through the mounting shell and is fixedly connected to the inner wall of the connecting shaft, and two mounting plates are fixedly connected to the surface of the connecting shaft and are symmetrically distributed. A pressure roller is disposed between the two mounting plates and is arranged in a ring around the connecting shaft, and the surface of the pressure roller is in contact with the surface of the hose body.

[0013] In the above technical solution, preferably, a sliding groove is provided on the opposite sides of the two mounting plates, a guide rod is fixedly connected to the inner wall of the sliding groove, a slider is slidably connected to the surface of the guide rod, a second spring is fixedly connected between the surface of the slider and the inner wall of the sliding groove, and one end of the pressure roller is rotatably connected to the surface of the adjacent slider.

[0014] A method for using a peristaltic pump for feeding includes the following steps: S1. The flexible tube structure is placed into the mounting cavity formed by the mounting shell and the connecting shell. The magnetic limiting blocks at both ends of the tube are automatically adsorbed and aligned with the limiting groove filled with magnetic metal material in the cavity, so as to achieve rapid pre-positioning. S2. Align the connecting shell and use the mounting bolts to fasten it to the mounting shell. This operation not only fixes the shell, but also presses the limiting block on the inner wall of the shell to achieve the final firm fixation of the hose structure. S3. Connect the connectors at both ends of the hose structure to the pipelines of the raw material supply source and the reaction equipment, respectively. S4. Start the motor to drive the connecting shaft and mounting plate to rotate, which in turn drives the pressure rollers on it to circulate and squeeze the hose body. Before entering the hose body, the raw material first flows through the filter ring in the mounting cylinder. The filter ring traps undissolved large particles of impurities in the raw material in the collection chamber on its outer side. The filtered pure raw material then enters the hose body through the inner side of the filter ring, realizing online filtration during the transportation process, protecting the hose and ensuring the purity of the raw material.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By using built-in filter rings to filter raw materials online, large particulate impurities are effectively intercepted, preventing them from wearing down or puncturing the hoses during extrusion, thus significantly extending the service life of the hoses. Simultaneously, the filter rings can be automatically flushed and impurities discharged when clogged, enabling online maintenance without shutdown or disassembly. This ensures the continuity and stability of material delivery and fundamentally prevents impurities from entering the reaction system, guaranteeing the purity of pharmaceutical intermediates. The flexible hose installation design, which uses a limit block with magnetic attraction and a limit groove, enables fast and accurate positioning and fixing, greatly simplifying the installation and replacement process. During use, the drive pressure roller automatically compensates for normal wear and tear on the hose under the action of a spring, maintaining a constant clamping force. This ensures the long-term stability of pumping flow and accuracy throughout the entire life cycle of the device, reducing maintenance frequency and improving the overall reliability of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram illustrating the separation process of the present invention; Figure 3 This is a schematic diagram of the driving structure of the present invention; Figure 4 for Figure 3 Enlarged view of A in the middle; Figure 5 This is a schematic diagram showing the connection between the mounting cylinder and the hose body of the present invention; Figure 6 This is a cross-sectional schematic diagram of the waste discharge pipe of the present invention.

[0017] In the diagram: 1. Motor; 101. Mounting housing; 102. Connecting housing; 103. Mounting bolt; 2. Hose structure; 201. Hose body; 202. Limiting block; 203. Mounting cylinder; 204. Connecting ring; 205. Discharge pipe; 206. Through hole; 207. Positioning plate; 208. Filter ring; 209. Connector; 210. Fixing rod; 211. First spring; 212. Fixing plate; 213. Through groove; 214. Sealing plate; 3. Drive structure; 301. Mounting plate; 302. Connecting shaft; 303. Pressure roller; 304. Slider; 305. Guide rod; 306. Second spring; 307. Slide groove. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] like Figures 1-6 The shown peristaltic pump for feeding includes a motor 1 and a mounting housing 101. The motor 1 is disposed on one side of the mounting housing 101, and a connecting housing 102 is disposed on the other side of the mounting housing 101. The surface of the connecting housing 102 is provided with evenly distributed mounting bolts 103. One end of the mounting bolt 103 passes through the connecting housing 102 and is threadedly connected to the inner wall of the mounting housing 101. An installation cavity is formed between the opposite sides of the mounting housing 101 and the connecting housing 102. A drive structure 3 is disposed on the inner wall of the installation cavity. A flexible hose structure 2 is disposed between the surface of the drive structure 3 and the inner wall of the installation cavity. Both ends of the flexible hose structure 2 pass through the installation cavity. The hose structure 2 includes a hose body 201. Both ends of the hose body 201 are fixedly connected to an installation cylinder 203. Two symmetrically distributed limiting blocks 202 are fixedly connected to the surface of the installation cylinder 203. The inner wall of the installation cavity is provided with a limiting groove corresponding to the limiting block 202. The limiting block 202 is a magnetic material component, and the inside of the limiting groove is filled with magnetic metal material.

[0021] The cooperation between the limiting groove and the limiting block 202 enables the hose body 201 to be installed quickly. During the installation process, the magnetic metal material in the limiting groove, together with the limiting block 202 made of magnetic material, can use the attraction force to guide the installation. After the connecting shell 102 and the mounting shell 101 are fixed by the mounting bolts 103, the positioning effect of the hose body 201 can be improved, and the positional deviation during use can be avoided, thus preventing the pumping of raw materials from being affected.

[0022] like Figures 1-6 As shown, one end of the mounting cylinder 203 is connected to the connector 209, and the other end of the connector 209 extends through the mounting cavity.

[0023] A connecting ring 204 is fixedly connected to the end of the hose body 201. The surface of the connecting ring 204 is fixedly connected to the inner side of the mounting cylinder 203. A positioning plate 207 located on the side of the connecting ring 204 away from the hose body 201 is fixedly connected to the inner wall of the mounting cylinder 203. A filter ring 208 is fixedly connected between the positioning plate 207 and the connecting ring 204. A collection cavity is formed between the outer side of the filter ring 208 and the inner wall of the mounting cylinder 203. The inner side of the filter ring 208 is connected to the hose body 201 through the central hole of the connecting ring 204. The surface of the positioning plate 207 is provided with uniformly distributed through holes 206 that are connected to the collection cavity.

[0024] The surface of the mounting cylinder 203 is provided with a discharge pipe 205 that communicates with the collection chamber. A fixing plate 212 is fixedly connected to the inner wall of the discharge pipe 205. A fixing rod 210 is fixedly connected to the bottom of the fixing plate 212. A sealing plate 214 that is slidably connected to the inner wall of the discharge pipe 205 is slidably connected to the surface of the fixing rod 210.

[0025] A first spring 211 is fixedly connected between the top of the sealing plate 214 and the surface of the fixing plate 212.

[0026] The surface of the fixing rod 210 has a through groove 213 located below the sealing plate 214.

[0027] Specifically, by setting the connector 209, it is easy to connect to the external pipeline. During the pumping process, the raw material can first enter the inside of the collection chamber through the through hole 206. During this process, the filter ring 208 is used to intercept undissolved large particles of impurities in the raw material, preventing large particles of impurities from entering the inside of the hose body 201. This prevents large particles of impurities from rubbing and squeezing against the inner wall of the hose body 201 during the extrusion and conveying process, thus improving the service life of the hose body 201. At the same time, it avoids the situation where large particles of impurities cause damage to the hose body 201 during the extrusion and conveying process, ensuring a good conveying environment.

[0028] After prolonged use, impurities will block the filter holes on the filter ring 208, preventing the raw material from being transported normally. As a result, during the operation of the peristaltic pump, a negative pressure will form inside the hose body 201, further drawing in the raw material through the connector 209. Once the raw material enters the collection chamber, it cannot pass through normally, causing the pressure inside the collection chamber to gradually increase. During this process, the raw material can push the sealing plate 214 to slide along the surface of the fixed rod 210 while simultaneously stretching the first spring 211, until the sealing plate 214 moves to the middle of the through groove 213. At this point, the raw material and impurities can pass through the through groove. The groove 213 bypasses the sealing plate 214 and finally discharges through the discharge pipe 205, so that the subsequently pumped raw material can be used to rinse the particulate impurities blocked on the surface of the filter ring 208, allowing the particulate impurities to be discharged through the discharge pipe 205 until the filter screen 208 can pass through the pumped raw material normally. At this time, the pressure in the collection chamber is restored, and the sealing plate 214 is reset under the action of the first spring 211, thereby sealing the discharge pipe 205. In specific use, the discharge pipe 205 should be connected to a collection bucket or other container to facilitate the reuse of the collected raw material after processing.

[0029] like Figures 1-6 As shown, the drive structure 3 includes a connecting shaft 302 disposed inside the mounting cavity. The output shaft of the motor 1 passes through the mounting shell 101 and is fixedly connected to the inner wall of the connecting shaft 302. Two mounting plates 301 are fixedly connected to the surface of the connecting shaft 302 and are symmetrically distributed. A pressure roller 303 is disposed between the two mounting plates 301 and is arranged in a ring around the connecting shaft 302. The surface of the pressure roller 303 is in contact with the surface of the hose body 201.

[0030] Both mounting plates 301 have grooves 307 on opposite sides. A guide rod 305 is fixedly connected to the inner wall of the groove 307. A slider 304 is slidably connected to the surface of the guide rod 305. A second spring 306 is fixedly connected between the surface of the slider 304 and the inner wall of the groove 307. One end of the pressure roller 303 is rotatably connected to the surface of the adjacent slider 304.

[0031] Specifically, the second spring 306 can push the slider 304 away from the connecting shaft 302, and in this process, it can drive the pressure roller 303 to move synchronously. Thus, during use, the pressure roller 303 is kept in close contact with the surface of the hose body 201. When the surface of the hose body 201 is worn, the second spring 306 can compensate for the thickness change caused by a small amount of wear, thereby ensuring the normal pumping function of the peristaltic pump, improving the service life of the device, and avoiding the problem of poor pumping effect caused by a reduction in the thickness of the hose body 201 due to a small amount of wear.

[0032] A method for using a peristaltic pump for feeding includes the following steps: S1. Place the flexible tube structure 2 into the mounting cavity formed by the mounting shell 101 and the connecting shell 102. The magnetic limiting blocks 202 at both ends of the flexible tube are automatically adsorbed and aligned with the limiting groove filled with magnetic metal material in the cavity, so as to achieve rapid pre-positioning. S2. Align the connecting shell 102 and use the mounting bolts 103 to fasten it to the mounting shell 101. This operation not only completes the fixing of the shell, but also presses the limiting block 202 on the inner wall of the shell to achieve the final and firm fixing of the hose structure. S3. Connect the connectors 209 at both ends of the hose structure to the pipelines of the raw material supply source and the reaction equipment, respectively. S4. Start motor 1 to drive the connecting shaft 302 and mounting plate 301 to rotate, which in turn drives the pressure roller 303 on it to circulate and squeeze the hose body 201. Before entering the hose body 201, the raw material first flows through the filter ring 208 in the mounting cylinder 203. The filter ring traps undissolved large particles of impurities in the raw material in the collection chamber on its outer side. The filtered pure raw material enters the hose body 201 through the inner side of the filter ring 208, realizing online filtration during the transportation process, protecting the hose and ensuring the purity of the raw material.

[0033] When the filter ring 208 is clogged by impurities due to prolonged use, the resistance to the raw material increases, resulting in an increase in pressure inside the collection chamber. The increased pressure pushes the sealing plate 214 inside the discharge pipe 205 to overcome the elastic force of the first spring 211 and move downward. When the sealing plate 214 moves to the position of the through groove 213 of the fixed rod 210, the raw material with impurities accumulated in the collection chamber passes through the through groove 213, bypasses the sealing plate 214, and is discharged into the external special collection container through the discharge pipe 205. The subsequently pumped raw material continuously flushes the surface of the filter ring 208, carrying away the clogged particulate impurities. As the filter ring 208 becomes clear, the pressure in the collection chamber returns to normal, the first spring 211 pushes the sealing plate 214 upward to reset, re-sealing the discharge pipe 205, and the device returns to normal filtration and conveying state.

[0034] During operation, the pressure roller 303 of the drive structure automatically maintains a tight squeeze on the surface of the hose body 201 under the action of the second spring 306. When the inner wall of the hose body 201 experiences slight wear due to normal use, the second spring 306 can push the pressure roller 303 to perform displacement compensation, ensuring a stable pumping effect until the hose body 201 needs to be replaced entirely.

[0035] 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 peristaltic pump for feeding, comprising a motor (1) and a mounting housing (101), characterized in that, The motor (1) is disposed on one side of the mounting shell (101), and a connecting shell (102) is disposed on the other side of the mounting shell (101). The surface of the connecting shell (102) is provided with evenly distributed mounting bolts (103). One end of the mounting bolt (103) passes through the connecting shell (102) and is threadedly connected to the inner wall of the mounting shell (101). An installation cavity is formed between the opposite sides of the mounting shell (101) and the connecting shell (102). A driving structure (3) is disposed on the inner wall of the installation cavity. A flexible hose structure (2) is disposed between the surface of the driving structure (3) and the inner wall of the installation cavity. Both ends of the flexible hose structure (2) pass through the installation cavity. The hose structure (2) includes a hose body (201), and mounting cylinders (203) are fixedly connected to both ends of the hose body (201). Two symmetrically distributed limiting blocks (202) are fixedly connected to the surface of the mounting cylinders (203). The inner wall of the mounting cavity is provided with limiting grooves corresponding to the limiting blocks (202). The limiting blocks (202) are made of magnetic material, and the inside of the limiting grooves is filled with magnetic metal material.

2. The peristaltic pump for feeding according to claim 1, characterized in that, One end of the mounting cylinder (203) is connected to a connector (209), and the other end of the connector (209) extends through the mounting cavity.

3. A peristaltic pump for feeding according to claim 2, characterized in that, A connecting ring (204) is fixedly connected to the end of the hose body (201). The surface of the connecting ring (204) is fixedly connected to the inner side of the mounting cylinder (203). A positioning plate (207) located on the side of the connecting ring (204) away from the hose body (201) is fixedly connected to the inner wall of the mounting cylinder (203). A filter ring (208) is fixedly connected between the positioning plate (207) and the connecting ring (204). A collection cavity is formed between the outer side of the filter ring (208) and the inner wall of the mounting cylinder (203). The inner side of the filter ring (208) is connected to the hose body (201) through the central hole of the connecting ring (204). The surface of the positioning plate (207) is provided with uniformly distributed through holes (206) that are connected to the collection cavity.

4. A peristaltic pump for feeding according to claim 3, characterized in that, The surface of the mounting cylinder (203) is provided with a discharge pipe (205) that communicates with the collection chamber. A fixing plate (212) is fixedly connected to the inner wall of the discharge pipe (205). A fixing rod (210) is fixedly connected to the bottom of the fixing plate (212). A sealing plate (214) that is slidably connected to the inner wall of the discharge pipe (205) is slidably connected to the surface of the fixing rod (210).

5. A peristaltic pump for feeding according to claim 4, characterized in that, A first spring (211) is fixedly connected between the top of the sealing plate (214) and the surface of the fixing plate (212).

6. A peristaltic pump for feeding according to claim 5, characterized in that, The surface of the fixing rod (210) is provided with a through groove (213) located below the sealing plate (214).

7. A peristaltic pump for feeding according to claim 6, characterized in that, The drive structure (3) includes a connecting shaft (302) disposed inside the mounting cavity. The output shaft of the motor (1) passes through the mounting shell (101) and is fixedly connected to the inner wall of the connecting shaft (302). Two mounting plates (301) are fixedly connected to the surface of the connecting shaft (302) and are symmetrically distributed. A pressure roller (303) is disposed between the two mounting plates (301) and is arranged in a ring around the connecting shaft (302). The surface of the pressure roller (303) is in contact with the surface of the hose body (201).

8. A peristaltic pump for feeding according to claim 7, characterized in that, Both mounting plates (301) have grooves (307) on opposite sides. A guide rod (305) is fixedly connected to the inner wall of the groove (307). A slider (304) is slidably connected to the surface of the guide rod (305). A second spring (306) is fixedly connected between the surface of the slider (304) and the inner wall of the groove (307). One end of the pressure roller (303) is rotatably connected to the surface of the adjacent slider (304).

9. A method of using a peristaltic pump for feeding, according to claim 8, characterized in that, Includes the following methods and steps, S1. Place the hose structure (2) into the mounting cavity formed by the mounting shell (101) and the connecting shell (102). The magnetic limiting blocks (202) at both ends of the hose are automatically adsorbed and aligned with the limiting groove filled with magnetic metal material in the cavity, so as to achieve rapid pre-positioning. S2. Align the connecting shell (102) with the mounting shell (101) and use the mounting bolts (103) to fasten it to the mounting shell (101). This operation not only completes the fixing of the shell, but also presses the limiting block (202) on the inner wall of the shell to achieve the final and firm fixing of the hose structure. S3. Connect the connectors (209) at both ends of the hose structure to the pipelines of the raw material supply source and the reaction equipment, respectively; S4. Start the motor (1) to drive the connecting shaft (302) and the mounting plate (301) to rotate, and drive the pressure roller (303) on it to circulate and squeeze the hose body (201). Before the raw material enters the hose body (201), it first flows through the filter ring (208) in the mounting cylinder (203). The filter ring traps the undissolved large particles of impurities in the raw material in the collection chamber on its outside. The filtered pure raw material enters the hose body through the inside of the filter ring, realizing online filtration during the transportation process, protecting the hose and ensuring the purity of the raw material.

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