Coupling for peristaltic pump

Abstract

The utility model relates to the technical field of couplings, in particular to a peristaltic pump coupler which comprises a fixing ring, a clamping ring, a transmission disc, a connecting rod, a clamping ball and a locking assembly, the fixing ring is fixedly installed on the outer side of a connecting sleeve, a threaded hole is formed in the fixing ring, the clamping ring is fixedly installed on the connecting sleeve, a clamping groove is formed in the clamping ring, and the clamping ball is embedded into the clamping groove. The connecting rod is fixedly installed on the clamping ball, the transmission disc is fixedly connected with the connecting rod, the locking assembly is installed on the connecting sleeves, when the internal structure of the coupler is damaged, the connecting sleeves on the two sides are separated from each other through the locking assembly, and due to the fact that the clamping ball and the clamping ring are connected in a clamped mode, after the connecting sleeves are separated, the locking assembly can be locked. And the clamping ball and other structures on the clamping ball can be taken out for maintenance or replacement, so that the coupler structure is convenient to disassemble and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a coupling for a peristaltic pump. Background Art

[0002] The peristaltic pump pumps fluid by alternately squeezing and releasing the elastic delivery hose of the pump. The peristaltic pump requires a coupling when connecting to the rotating head.

[0003] The existing patent CN217582918U is a coupling suitable for a peristaltic pump. Through a gear linkage ring, a first shaft rod and a second shaft rod on both sides are connected by transmission. That is, a first gear column is provided at one end of the first shaft rod, and a second gear column is provided at one end of the second shaft rod. The first gear column and the second gear column are engaged and connected inside the gear linkage ring to achieve transmission connection, and a spring, a top plate and a limit plate are provided on one side of the second shaft rod, and an adjusting rod is provided on the coupling housing to realize the toggle of the limit plate to achieve engagement and disengagement of braking, and the spring and the top plate can be pushed in to engage, effectively realizing convenient operation.

[0004] However, in the process of using the existing patented coupling suitable for a peristaltic pump, the device realizes power transmission through a gear linkage ring together with two sets of gear columns. However, since the gear linkage ring is arranged in the middle of the coupling housing, it is difficult to disassemble, repair or replace the gear linkage ring when it is damaged. Utility Model Content

[0005] The purpose of the utility model is to provide a coupling for a peristaltic pump, which solves the problem that the aforementioned device realizes power transmission through a gear linkage ring together with two sets of gear columns, but because the gear linkage ring is arranged in the middle of the coupling housing, when the gear linkage ring is damaged, it is difficult to disassemble, repair or replace it.

[0006] To achieve the above-mentioned purpose, the utility model provides a coupling for a peristaltic pump, including a connecting sleeve and a fixing device, the connecting sleeve is provided with a keyway, the fixing device is installed on the connecting sleeve, and also includes a connecting device, the connecting device includes a fixing ring, a retaining ring, a transmission disk, a connecting rod, a retaining ball and a locking assembly, the fixing ring is fixedly installed on the outside of the connecting sleeve, the fixing ring is provided with a threaded hole, the retaining ring is fixedly installed on the connecting sleeve, the retaining ring is provided with a retaining groove, the retaining ball is embedded in the retaining groove, the connecting rod is fixedly installed on the retaining ball, the transmission disk is fixedly connected to the connecting rod, and the locking assembly is installed on the connecting sleeve.

[0007] Wherein, the locking assembly includes a locking bolt and a nut, the locking bolt thread passes through the threaded hole on the fixing ring; the nut cooperates with the locking bolt thread.

[0008] Among them, the connecting device further includes a fixing rod and a reinforcing block. The fixing rod is fixedly installed on the driving disc; the reinforcing block is fixedly installed on the fixing rod, and an arc groove is provided on the reinforcing block, and the connecting rod is embedded in the arc groove.

[0009] Among them, the fixing device includes a fixing arc plate, a connecting spring and a driving component. The connecting spring is fixedly installed in the connecting sleeve; the fixing arc plate is fixedly installed on the connecting spring; the driving component is installed in the connecting sleeve.

[0010] Among them, the driving component includes a driving screw rod and a fixing disc. The driving screw rod threadedly penetrates through the connecting sleeve and abuts against the fixing arc plate; the fixing disc is fixedly installed on the driving screw rod and is located outside the connecting sleeve.

[0011] For a coupling for a peristaltic pump of the present utility model, through the arrangement of the key grooves in the connecting sleeves on both sides, it is convenient to perform key connection on the driving shaft and the rotating head. At the same time, through the engagement of the clamping balls with the clamping grooves on the clamping rings on both sides, the power transmission between the driving shaft and the rotating head can be realized. When the internal structure of the coupling is damaged, loosen the nut so that the nut is separated from the locking bolt, and then the connecting sleeves on both sides are separated from each other. Since the clamping balls and the clamping rings are connected by clamping, when the connecting sleeves are separated, the clamping balls and other structures on the clamping balls can be taken out for repair or replacement, thereby facilitating the disassembly and repair of the coupling structure. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0013] Figure 1 It is a schematic diagram of the overall structure of a coupling for a peristaltic pump according to the first embodiment of the present utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the connecting device according to the first embodiment of the present utility model.

[0015] Figure 3 It is a schematic diagram of the overall structure of a coupling for a peristaltic pump according to the second embodiment of the present utility model.

[0016] In the figure: 101 - connecting sleeve, 102 - fixing ring, 103 - snap ring, 104 - driving disc, 105 - connecting rod, 106 - clamping ball, 107 - threaded hole, 108 - clamping groove, 109 - locking bolt, 110 - nut, 111 - fixing rod, 112 - reinforcing block, 113 - arc groove, 114 - keyway, 201 - fixing arc plate, 202 - connecting spring, 203 - driving screw rod, 204 - fixing disc. Specific implementation mode

[0017] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0018] The first embodiment of this application is as follows:

[0019] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic diagram of the overall structure of a coupling for a peristaltic pump according to the first embodiment of the present invention, Figure 2 and

[0020] The present invention provides a coupling for a peristaltic pump: including a connecting sleeve 101 and a fixing device, and further including a connecting device. The connecting device includes a fixing ring 102, a snap ring 103, a driving disc 104, a connecting rod 105, a clamping ball 106 and a locking assembly. The locking assembly includes a locking bolt 109 and a nut 110. The connecting device further includes a fixing rod 111 and a reinforcing block 112. The foregoing solution solves the problem that the foregoing device realizes power transmission through a gear linkage ring together with two sets of gear columns. However, since the gear linkage ring is arranged in the middle of the coupling housing, it is difficult to disassemble, repair or replace when the gear linkage ring is damaged. The foregoing solution can be used in the scenario of installing a coupling for a peristaltic pump, and can also be used to solve the problem of fixing rotating heads or drive shafts of different sizes.

[0021] In this embodiment, through the snap connection between the clamping ball 106 and the snap ring 103, when the connecting sleeve 101 is separated, the clamping ball 106 and other structures on the clamping ball 106 can be taken out for repair or replacement, so as to facilitate the disassembly and repair of the coupling structure.

[0022] Among them, the fixed ring 102 is fixedly installed on the outer side of the connecting sleeve 101. The fixed ring 102 is provided with a threaded hole 107. The clamping ring 103 is fixedly installed on the connecting sleeve 101. The clamping ring 103 is provided with a clamping groove 108. The clamping ball 106 is embedded in the clamping groove 108. The connecting rod 105 is fixedly installed on the clamping ball 106. The transmission disk 104 is fixedly connected with the connecting rod 105. The locking assembly is installed on the connecting sleeve 101. The number of the connecting sleeves 101 is two groups. The two groups of the connecting sleeves 101 are arranged oppositely. One group of the fixed ring 102 and one group of the clamping ring 103 are welded on each group of the connecting sleeves 101. The clamping ball 106 is simultaneously engaged with the clamping grooves 108 on the clamping rings 103 on both sides. The number of the clamping grooves 108 is multiple groups and is annularly distributed on the clamping ring 103. The number of the clamping balls 106, the connecting rods 105 is the same as that of the clamping grooves 108. The connecting rods 105 are annularly distributed on the transmission disk 104. The transmission disk 104 is of a disk structure. The locking assembly can realize the rapid installation and disassembly between the two groups of the connecting sleeves 101. Through the engagement of the clamping ball 106 with the clamping grooves 108 on the clamping rings 103 on both sides, the power transmission between the drive shaft and the rotating head can be realized. When the internal structure of the coupling is damaged, the two groups of the connecting sleeves 101 are separated from each other through the locking assembly. Since the clamping ball 106 and the clamping ring 103 are connected by clamping, when the connecting sleeve 101 is separated, the clamping ball 106 and other structures on the clamping ball 106 can be taken out for repair or replacement, so as to facilitate the disassembly and repair of the coupling structure.

[0023] Secondly, the locking bolt 109 is threaded through the threaded hole 107 on the fixed ring 102; the nut 110 is in threaded cooperation with the locking bolt 109. The number of the locking assemblies is six groups and is annularly distributed on the fixed ring 102. Through the threaded cooperation between the locking bolt 109 and the nut 110, the rapid installation and disassembly between the two groups of the connecting sleeves 101 can be realized.

[0024] Again, the fixing rod 111 is fixedly installed on the driving disc 104; the reinforcing block 112 is fixedly installed on the fixing rod 111. At the same time, an arc groove 113 is provided on the reinforcing block 112, and the connecting rod 105 is embedded in the arc groove 113. The number of the fixing rods 111 is the same as that of the connecting rods 105 and they are annularly distributed on the outer wall of the driving disc 104. At the same time, the fixing rod 111 is located between every two groups of the connecting rods 105. A group of the reinforcing blocks 112 are welded to the end of each group of the fixing rods 111. The reinforcing block 112 is of an arc-shaped structure, and multiple groups of the reinforcing blocks 112 cooperate to form a ring structure. The arc grooves 113 are provided on both sides of the reinforcing block 112. Through the setting of the arc groove 113, it is convenient for the reinforcing block 112 to be engaged with the connecting rod 105. Thus, through the setting of the fixing rod 111 and the reinforcing block 112, the shearing force received by the connecting rod 105 during rotation can be reduced, and the possibility of the connecting rod 105 breaking is further reduced.

[0025] In this embodiment, through the setting of the key grooves 114 in the connecting sleeves 101 on both sides, it is convenient to perform key connection on the driving shaft and the rotating head. At the same time, through the engagement of the clamping balls 106 with the clamping grooves 108 on the clamping rings 103 on both sides, the power transmission between the driving shaft and the rotating head can be realized. When the internal structure of the coupling is damaged, loosen the nut 110 so that the nut 110 is disengaged from the locking bolt 109, and then the connecting sleeves 101 on both sides are separated from each other. Since the clamping balls 106 and the clamping rings 103 are connected by clamping, when the connecting sleeves 101 are separated, the clamping balls 106 and other structures on the clamping balls 106 can be taken out for repair or replacement, so as to facilitate the disassembly and repair of the coupling structure.

[0026] The second embodiment of the present application is as follows:

[0027] Please refer to Figure 3 , in which Figure 3 is the overall structural schematic diagram of a coupling for a peristaltic pump according to the second embodiment of the present invention. On the basis of the first embodiment, the coupling for a peristaltic pump in this embodiment further includes a fixing device, and the fixing device includes a fixing arc plate 201, a connecting spring 202 and a driving assembly. The driving assembly includes a driving screw 203 and a fixing disc 204.

[0028] In this embodiment, through the driving of the fixing arc plates 201 on both sides by the driving assembly, the fixing arc plates 201 can fix driving shafts or rotating heads of different sizes.

[0029] Among them, the connecting spring 202 is fixedly installed inside the connecting sleeve 101; the fixed arc plate 201 is fixedly installed on the connecting spring 202; the driving assembly is installed inside the connecting sleeve 101, and two groups of the fixing devices are symmetrically arranged inside each connecting sleeve 101. The fixed arc plate 201 is of an arc-shaped structure. The two ends of the connecting spring 202 are respectively welded to the inner wall of the connecting sleeve 101 and the fixed arc plate 201. The initial state of the connecting spring 202 is in a compressed state. The driving assembly can drive the fixed arc plate 201 to move. During use, the driving assembly drives the two fixed arc plates 201 on both sides to move closer to the middle at the same time, so that the two fixed arc plates 201 on both sides fix the drive shaft or the rotating head, thereby facilitating the fixing of drive shafts or rotating heads of different sizes inside the connecting sleeve 101.

[0030] Secondly, the driving screw 203 threadedly penetrates through the connecting sleeve 101 and abuts against the fixed arc plate 201; the fixed disk 204 is fixedly installed on the driving screw 203 and is located outside the connecting sleeve 101. The fixed disk 204 is welded to the outer end of the driving screw 203. During use, the fixed disk 204 drives the driving screw 203 to rotate, so that the driving screw 203 moves towards the center of the connecting sleeve 101 through the threaded fit with the connecting sleeve 101, thereby enabling the driving screw 203 to push the fixed arc plate 201.

[0031] In this embodiment, during use, the fixed disk 204 drives the driving screw 203 to rotate, so that the driving screw 203 moves towards the center of the connecting sleeve 101 through the threaded fit with the connecting sleeve 101. The two fixed arc plates 201 on both sides then move closer to the middle at the same time under the drive of the driving screw 203, so that the two fixed arc plates 201 on both sides fix the drive shaft or the rotating head, thereby facilitating the fixing of drive shafts or rotating heads of different sizes inside the connecting sleeve 101.

[0032] What is disclosed above is only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A coupling for a peristaltic pump, comprising a connecting sleeve and a fixing device. A keyway is provided on the connecting sleeve, and the fixing device is installed on the connecting sleeve. It is characterized in that, it further comprises a connecting device; The connecting device includes a fixing ring, a snap ring, a driving disc, a connecting rod, a clamping ball and a locking assembly. The fixing ring is fixedly installed on the outer side of the connecting sleeve, and a threaded hole is provided on the fixing ring. The snap ring is fixedly installed on the connecting sleeve, and a clamping groove is provided on the snap ring. The clamping ball is embedded in the clamping groove. The connecting rod is fixedly installed on the clamping ball. The driving disc is fixedly connected to the connecting rod. The locking assembly is installed on the connecting sleeve.

2. The coupling for a peristaltic pump according to claim 1, characterized in that, The locking assembly includes a locking bolt and a nut. The locking bolt threadedly penetrates through the threaded hole on the fixing ring; the nut is in threaded cooperation with the locking bolt.

3. The coupling for a peristaltic pump according to claim 1, characterized in that, The connecting device further includes a fixing rod and a reinforcing block. The fixing rod is fixedly installed on the driving disc; the reinforcing block is fixedly installed on the fixing rod, and an arc groove is provided on the reinforcing block. The connecting rod is embedded in the arc groove.

4. The coupling for a peristaltic pump according to claim 1, characterized in that, The fixing device includes a fixing arc plate, a connecting spring and a driving assembly. The connecting spring is fixedly installed in the connecting sleeve; the fixing arc plate is fixedly installed on the connecting spring; the driving assembly is installed in the connecting sleeve.

5. The coupling for a peristaltic pump according to claim 4, characterized in that, The driving assembly includes a driving screw and a fixing disc. The driving screw threadedly penetrates through the connecting sleeve and abuts against the fixing arc plate; the fixing disc is fixedly installed on the driving screw and is located outside the connecting sleeve.

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