Peristaltic pump head with guiding function and convenient pipe replacement

Abstract

The utility model belongs to the technical field of fluid delivery pumps, in particular to a peristaltic pump head with a guiding function, which is convenient for pipe replacement and comprises a base, a pump cover, a rotating mechanism and a locking mechanism, a wheel carrier is arranged on the base, rollers are arranged on the wheel carrier, the rotating mechanism comprises a rotating shaft, the rotating shaft is arranged on the end face of one side of the pump cover, and a kidney-shaped hole is formed in the base; the locking mechanism comprises a button, a clamping groove is formed in one end face of the pump cover, a through hole communicated with the clamping groove is formed in the side face of the pump cover, the button is arranged in the through hole, a compression spring is arranged at the bottom of the button and abuts against the inner wall of the clamping groove, a male buckle is fixedly connected to the button, and a female buckle matched with the male buckle is arranged at the position, corresponding to the male buckle, of the base. One end of the pump cover is rotationally connected with the base through the rotating shaft matched with the kidney-shaped hole, the other end of the pump cover is matched and fixed through the male buckle and the female buckle, the pump cover can be controlled to be opened through the button, a hose can be replaced conveniently, the peristaltic pump head is cleaned and maintained conveniently, meanwhile, the pump head is simple and compact in structure, and space occupation is not increased.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid delivery pumps, in particular to a peristaltic pump head with convenient tube replacement and a guiding function. Background Art

[0002] Peristaltic pump is a new type of fluid delivery pump that appeared after rotor pump, centrifugal pump, diaphragm pump, etc. It is being widely promoted and applied in various industries such as medical treatment, medicine, food, beverage, chemical industry, smelting, laboratory analysis, etc. The hose for conveying liquid inside the peristaltic pump is the only consumable. Due to its frequent use, its service life is short and it needs to be replaced frequently. Therefore, it is particularly important to improve the convenience of hose replacement and reduce the difficulty of operation.

[0003] At present, most peristaltic pumps on the market are fixed block type, which is inconvenient to change the tube. Tools are needed, and the hose cannot be kept in the center, which can easily cause the tube to be worn and damaged. Other peristaltic pumps that are easy to change the tube mainly have eccentric wheel structure and rotating block structure. However, as the number of peristaltic pumps used in a single device increases, higher requirements are placed on peristaltic pumps. Not only do they need to be easy to change the tube, but the space for the peristaltic pump to be used should not be increased. The head structure of several peristaltic pumps that are easy to change the tube on the market will increase the space occupied.

[0004] In view of the above problems, the utility model document proposes a peristaltic pump head with a guiding function that is convenient for tube replacement. Utility Model Content

[0005] The utility model provides a peristaltic pump head with a guiding function which is convenient for tube replacement, reduces the difficulty of tube replacement operation, improves tube replacement efficiency, and does not increase space occupation.

[0006] The utility model provides the following technical solutions:

[0007] A peristaltic pump head with a guiding function for convenient tube replacement comprises a base and a pump cover, wherein the base is provided with a wheel frame, a roller is clamped on the wheel frame, and further comprises a rotating mechanism and a locking mechanism, wherein the rotating mechanism comprises a rotating shaft, the rotating shaft is arranged on one side end surface of the pump cover, and a waist-shaped hole is arranged at a position corresponding to the rotating shaft on the base; the locking mechanism comprises a button, a slot is provided on the other side end surface of the pump cover relative to the rotating shaft, and a through hole connected to the slot is provided on the side surface, a button is arranged in the through hole, a compression spring is provided at the bottom of the button, the compression spring abuts against the inner wall of the slot, a buckle male buckle is fixedly connected to the button, and a buckle female buckle matching the buckle male buckle is provided at a position corresponding to the buckle male buckle on the base.

[0008] Furthermore, a notch is formed on the top side wall of one end of the waist-shaped hole close to the roller for the rotating shaft to pass through.

[0009] Furthermore, a positioning shaft is provided on the side wall of the button adjacent to the slot, a positioning hole is opened at a corresponding position of the inner side wall of the slot, one end of the compression spring is sleeved on the positioning shaft, and the other end is clamped in the positioning hole.

[0010] Furthermore, the button includes a pressing portion and a limiting plate arranged on a side wall of the pressing portion close to one end of the card slot, and the buckle male buckle is connected to the limiting plate.

[0011] Furthermore, two rotation axes are arranged on one side of the pump cover, waist-shaped holes are arranged at corresponding positions on the base, and the two rotation axes are symmetrically arranged on both sides of the wheel frame.

[0012] Furthermore, a positioning plate and a hose are provided on the base. There are two positioning plates, which are symmetrically arranged on both sides of the buckle mother buckle. The hose is clamped between the positioning plate and the roller. Joints are provided at both ends of the hose. The joints are clamped on the two side surfaces adjacent to the side surfaces of the base where the buckle mother buckle is provided.

[0013] Furthermore, two limit blocks are vertically arranged on the base, and a limit slot is opened on the limit block. The side wall of the limit slot is provided with a yield slot, and the joint is clamped in the limit slot, and the joint enters the limit slot through the yield slot.

[0014] Furthermore, two first guide blocks are vertically arranged on the base, and the two first guide blocks are respectively arranged on the adjacent sides of the two limit blocks. A second guide block is provided on the pump cover at a position corresponding to the first guide block. The side of the first guide block facing the waist-shaped hole is an arc surface, and the surface of the second guide block in contact with the first guide block is an arc surface. The width of the first guide block gradually increases from the top end to the bottom end, and the width of the second guide block gradually increases from the bottom end to the top end, and the sum of the maximum width of the first guide block and the maximum width of the second guide block is less than or equal to the length of the waist-shaped hole.

[0015] Furthermore, an elastic connecting arm is provided on the pump cover, the rotating shaft is connected to the pump cover via the elastic connecting arm, and the side wall of the rotating shaft is connected to the end surface of the elastic connecting arm.

[0016] In the utility model, one end of the pump cover is rotatably connected to the base through a rotating shaft and a waist-shaped hole, while the other end is fixed by a male buckle and a female buckle. The opening of the pump cover can be controlled by a button, which is convenient for replacing the hose and cleaning and maintenance of the peristaltic pump head. At the same time, the pump head has a simple structure and does not increase space occupancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a peristaltic pump head with a guiding function and convenient tube replacement provided by an embodiment of the utility model;

[0018] Figure 2 A schematic cross-sectional view of a peristaltic pump head with a guide function that is convenient for tube replacement provided by an embodiment of the utility model;

[0019] Figure 3 Another schematic cross-sectional view of a peristaltic pump head with a guiding function for convenient tube replacement provided by an embodiment of the utility model.

[0020] Reference numerals:

[0021] 1. Base; 101. Waist-shaped hole; 102. Limit block; 103. Limit slot; 104. Give way slot; 105. First guide block; 106. Buckle female buckle; 2. Pump cover; 201. Slot; 202. Through hole; 203. Button; 204. Limit plate; 205. Buckle male buckle; 206. Compression spring; 207. Rotating shaft; 208. Elastic connecting arm; 209. Positioning shaft; 2010. Positioning hole; 3. Wheel frame; 4. Roller; 5. Hose; 6. Connector; 7. Positioning plate. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model.

[0024] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0025] In the embodiment of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0026] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the utility model include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0027] Example:

[0028] Reference Figure 1 , Figure 2 and Figure 3 As shown, a peristaltic pump head with convenient tube replacement and guiding function comprises a base 1 and a pump cover 2, a wheel frame 3 is provided on the base 1, a roller 4 is clamped on the wheel frame 3, and the characteristic is that it also comprises a rotating mechanism and a locking mechanism, the rotating mechanism comprises a rotating shaft 207, the rotating shaft 207 is arranged on one side end surface of the pump cover 2, and a waist-shaped hole 101 is arranged at a position corresponding to the rotating shaft 207 on the base 1; the locking mechanism comprises a button 203, a card slot 201 is opened on the other side end surface of the pump cover 2 relative to the rotating shaft 207, and a through hole 202 connected with the card slot 201 is opened on the side surface, a button 203 is arranged in the through hole 202, a compression spring 206 is arranged at the bottom of the button 203, the compression spring 206 abuts against the inner wall of the card slot 201, a buckle male buckle 205 is fixedly connected to the button 203, and a matching buckle female buckle 106 is arranged at a position corresponding to the buckle male buckle 205 on the base 1.

[0029] The rotating shaft 207 is stuck in the waist-shaped hole 101, so that the pump cover 2 and the base 1 are hinged, so that the pump cover 2 can rotate, and the pump cover 2 and the base 1 can be fixed by cooperating with the male buckle 205 and the female buckle 106. By pressing the button 203, the male buckle 205 and the female buckle 106 are separated, so that the pump cover 2 and one end of the base 1 can be separated, so that the pump cover 2 can be rotated, and then the pump cover 2 is opened, and the internal hose 5 can be replaced. The opening method is simple, which can improve the efficiency of tube replacement. At the same time, the pump head has a simple structure and will not increase the space occupied by the pump head.

[0030] A notch is formed on the top side wall of one end of the waist-shaped hole 101 close to the roller 4 for the rotating shaft 207 to pass through.

[0031] The rotating shaft 207 can be taken out from the notch through the notch, and when the pump cover 2 is opened, the pump cover 2 can be separated from the base 1, so as to facilitate the pipe replacement operation.

[0032] A positioning shaft 209 is provided on the side wall of the button 203 adjacent to the slot 201 , and a positioning hole 2010 is opened at a corresponding position on the inner wall of the slot 201 . One end of the compression spring 206 is sleeved on the positioning shaft 209 , and the other end is clamped in the positioning hole 2010 .

[0033] The position of the compression spring 206 is fixed by cooperating with the positioning shaft 209 and the positioning hole 2010 to prevent the compression spring 206 from changing position due to force. The change in position of the compression spring 206 causes the button 203 to loosen. The loose button 203 will loosen the fit between the male buckle 205 and the female buckle 106, resulting in the pump cover 2 being unable to be fixed, affecting the safe use of the pump head.

[0034] The button 203 includes a pressing portion and a limiting plate 204 disposed on a side wall of the pressing portion close to one end of the slot 201 , and a buckle male buckle 205 is connected to the limiting plate 204 .

[0035] The limiting plate 204 can prevent the button 203 from falling off from the through hole 202 under the elastic force of the compression spring 206 on the one hand, and on the other hand, it is convenient to connect with the buckle male buckle 205 to ensure the normal use of the locking mechanism, and further ensure the stability of the locking of the pump cover 2 and the base 1.

[0036] Two rotating shafts 207 are arranged on one side of the pump cover 2 , waist-shaped holes 101 are arranged at corresponding positions on the base 1 , and the two rotating shafts 207 are symmetrically arranged on both sides of the wheel frame 3 .

[0037] By cooperating between the two rotating shafts 207 and the waist-shaped hole 101, two hinged positions are formed, so that the pump cover 2 is evenly stressed when rotating, thereby improving the stability of the pump cover 2 when rotating, preventing the pump cover 2 from shaking when rotating, and thus avoiding damage to the pump cover 2 due to shaking, thereby improving the service life of the pump cover 2, and at the same time preventing the pump cover 2 from damaging the rotating shaft 207 and the waist-shaped hole 101 when shaking, thereby affecting the stability of the rotating mechanism.

[0038] The base 1 is also provided with a positioning plate 7 and a hose 5. There are two positioning plates 7, which are symmetrically arranged on both sides of the buckle mother buckle 106. The hose 5 is clamped between the positioning plate 7 and the roller 4. Both ends of the hose 5 are provided with joints 6, and the joints 6 are clamped on the two side surfaces adjacent to the side of the base 1 where the buckle mother buckle 106 is provided.

[0039] The middle of the hose 5 is positioned by the positioning plate 7 in cooperation with the roller 4 , and the connectors 6 at both ends of the hose 5 are clamped on the base 1 , so that the hose 5 can be easily disassembled.

[0040] Two limit blocks 102 are vertically arranged on the base 1 , and a limit slot 103 is opened on the limit block 102 . A side wall of the limit slot 103 is provided with a clearance slot 104 . The connector 6 is clamped in the limit slot 103 , and the connector 6 enters the limit slot 103 through the clearance slot 104 .

[0041] The connector 6 is clamped in the limiting groove 103 , and when disassembling, it is only necessary to take the connector 6 out of the limiting groove 103 , so that the difficulty of disassembling the hose 5 is reduced, thereby improving the replacement efficiency of the hose 5 .

[0042] Two first guide blocks 105 are also vertically arranged on the base 1, and the two first guide blocks 105 are respectively arranged on the adjacent sides of the two limit blocks 102. A second guide block is provided on the pump cover 2 at a position corresponding to the first guide block 105. The side of the first guide block 105 facing the waist-shaped hole 101 is an arc surface, and the surface of the second guide block in contact with the first guide block 105 is an arc surface. The width of the first guide block 105 gradually increases from the top to the bottom, and the width of the second guide block gradually increases from the bottom to the top, and the sum of the maximum width of the first guide block 105 and the maximum width of the second guide block is less than or equal to the length of the waist-shaped hole 101.

[0043] By matching the arc surface of the first guide block 105 with the arc surface of the second guide block, when the pump cover 2 is closed, the pump cover 2 is pushed toward the waist-shaped hole 101, so that the rotating shaft 207 moves in the waist-shaped hole 101 and is misaligned with the notch, so that the rotating shaft 207 is stuck in the waist-shaped hole 101, thereby improving the stability of the structure when the pump head and the base 1 are closed. At the same time, the pump cover 2 will not rub against the hose 5 when rotating, thereby causing damage to the hose 5, thereby improving the service life of the hose 5.

[0044] The sum of the maximum width of the first guide block 105 and the maximum width of the second guide block is less than or equal to the length of the waist-shaped hole 101, so as to prevent the rotating shaft 207 from falling off from the notch of the waist-shaped hole 101 under force, thereby affecting the stability of the connection between the pump cover 2 and the base 1.

[0045] An elastic connecting arm 208 is provided on the pump cover 2 , and the rotating shaft 207 is connected to the pump cover 2 via the elastic connecting arm 208 . The side wall of the rotating shaft 207 is connected to the end surface of the elastic connecting arm 208 .

[0046] The rotating shaft 207 is connected to the pump cover 2 through the elastic connecting arm 208, so that after the rotating shaft 207 is clamped in the waist-shaped hole 101, the elastic connecting arm 208 will be concave downward, forming a downward force on the pump cover 2, pressing the pump cover 2 against the base 1, and at the same time, the button 203 is compressed by the compression spring 206, thereby pulling the male buckle 205 to make the locking structure between the male buckle 205 and the female buckle 106 more secure. When the button 203 is pressed to separate the male buckle 205 from the female buckle 106, the pump cover 2 can automatically pop open under the action of the elastic force of the elastic connecting arm 208, further improving the efficiency of replacing the hose 5.

[0047] When in use, if the hose 5 is to be replaced, the pump cover 2 needs to be opened, and the worker presses the button 203 to move the button 203 into the slot 201 and compress the compression spring 206 at the same time. The movement of the button 203 drives the male buckle 205 to move together, so that the male buckle 205 and the female buckle 106 are separated, and the pump cover 2 bounces upward under the extrusion force of the first guide block 105 and the second guide block. The rotating shaft 207 on the pump cover 2 rotates in the waist-shaped hole 101 and moves from one end of the waist-shaped hole 101 to the notch position. The worker can take out the rotating shaft 207 from the notch of the waist-shaped hole 101, and use it as an excuse to separate the pump cover 2 from the base 1, and then take out the connector 6 from the limiting slot 103 of the limiting block 102, and then replace the new hose 5; after the hose 5 is replaced, the rotating shaft 207 is inserted into the waist-shaped hole from the notch. 101, and then press down the pump cover 2, the arc surface of the second guide block on the pump cover 2 contacts the arc surface of the first guide block 105 on the base 1, as the pump cover 2 is pressed down, since the width of the first guide block 105 gradually increases from the top to the bottom, the width of the second guide block gradually increases from the bottom to the top, so that the pump cover 2 will deviate toward the direction of the waist-shaped hole 101 during the downward movement, and then the rotating shaft 207 will deviate from the notch into the other end of the waist-shaped hole 101, after pressing down to a certain extent, the male buckle 205 of the buckle cooperates with the female buckle 106 to lock the pump cover 2 on the base 1, and the elastic connecting arm 208 gives the pump cover 2 a downward elastic force to press the pump cover 2 on the base 1, and at the same time, the button 203 is pressed by the compression spring 206, and then the male buckle 205 of the buckle is tightened, so that the male buckle 205 of the buckle and the female buckle 106 are tightly matched.

[0048] The peristaltic pump head is easy to operate to replace the hose 5, which improves the efficiency of replacing the hose 5. At the same time, the pump head has a simple and compact structure and occupies little space.

[0049] In actual use, the buckle male buckle 205, the limiting plate 204 and the button 203 are integrally formed, which improves the overall structural strength and also facilitates the movement of the buckle male buckle 205 when the button 203 is pressed.

[0050] The pump cover 2, the elastic connecting arm 208 and the rotating shaft 207 are integrally formed to improve the overall structural strength and ensure the stability of the connection between the elastic connecting arm 208, the pump cover 2 and the rotating shaft 207 when the rotating shaft 207 moves in the waist-shaped hole 101, thereby ensuring that the elastic connecting arm 208 can provide downward elastic force to the pump cover 2 and ensure that the pump cover 2 can be pressed against the base 1.

[0051] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model; in the absence of conflicts, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A peristaltic pump head with a guiding function for convenient tube replacement, comprising a base and a pump cover, wherein a wheel frame is provided on the base, and a roller is clamped on the wheel frame, characterized in that: It also includes a rotating mechanism and a locking mechanism, the rotating mechanism includes a rotating shaft, the rotating shaft is arranged on one side end surface of the pump cover, and a waist-shaped hole is arranged at a position corresponding to the rotating shaft on the base; the locking mechanism includes a button, a card slot is opened on the other side end surface of the pump cover relative to the rotating shaft, and a through hole connected to the card slot is opened on the side, a button is arranged in the through hole, a compression spring is arranged at the bottom of the button, the compression spring abuts against the inner wall of the card slot, a buckle male buckle is fixedly connected to the button, and a buckle female buckle matching with the buckle male buckle is arranged at a position corresponding to the buckle male buckle on the base.

2. A peristaltic pump head with a guiding function and convenient tube replacement according to claim 1, characterized in that: A notch is formed on the top side wall of one end of the waist-shaped hole close to the roller for the rotating shaft to pass through.

3. A peristaltic pump head with a guiding function and convenient tube replacement according to claim 2, characterized in that: A positioning shaft is provided on the side wall of the button adjacent to the slot, a positioning hole is opened at a corresponding position of the inner side wall of the slot, one end of the compression spring is sleeved on the positioning shaft, and the other end is clamped in the positioning hole.

4. A peristaltic pump head with a guiding function and convenient tube replacement according to claim 3, characterized in that: The button comprises a pressing portion and a limiting plate arranged on a side wall of the pressing portion close to one end of the card slot, and the buckle male buckle is connected to the limiting plate.

5. A peristaltic pump head with a guiding function and convenient tube replacement according to claim 4, characterized in that: Two rotating shafts are arranged on one side of the pump cover, waist-shaped holes are arranged at corresponding positions on the base, and the two rotating shafts are symmetrically arranged on both sides of the wheel frame.

6. A peristaltic pump head with a guiding function and convenient tube replacement according to claim 5, characterized in that: The base is also provided with a positioning plate and a hose. There are two positioning plates, which are symmetrically arranged on both sides of the buckle mother buckle. The hose is clamped between the positioning plate and the roller. Joints are provided at both ends of the hose. The joints are clamped on the two side surfaces adjacent to the side surfaces of the base where the buckle mother buckle is provided.

7. A peristaltic pump head with a guiding function and convenient tube replacement according to claim 6, characterized in that: Two limit blocks are vertically arranged on the base, and a limit slot is formed on the limit block. A clearance slot is arranged on the side wall of the limit slot, and the joint is clamped in the limit slot, and the joint enters the limit slot through the clearance slot.

8. A peristaltic pump head with a guiding function and convenient tube replacement according to claim 7, characterized in that: Two first guide blocks are also vertically arranged on the base, and the two first guide blocks are respectively arranged on the adjacent sides of the two limit blocks. A second guide block is provided on the pump cover at a position corresponding to the first guide block. The side of the first guide block facing the waist-shaped hole is an arc surface, and the surface of the second guide block in contact with the first guide block is an arc surface. The width of the first guide block gradually increases from the top end to the bottom end, and the width of the second guide block gradually increases from the bottom end to the top end, and the sum of the maximum width of the first guide block and the maximum width of the second guide block is less than or equal to the length of the waist-shaped hole.

9. A peristaltic pump head with a guiding function and convenient tube replacement according to claim 8, characterized in that: The pump cover is provided with an elastic connecting arm, the rotating shaft is connected to the pump cover via the elastic connecting arm, and the side wall of the rotating shaft is connected to the end surface of the elastic connecting arm.

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