Universal driving device for peristaltic pump and diaphragm pump and mounting process thereof

Abstract

The present application relates to a kind of peristaltic pump and diaphragm pump universal driving device and its installation process, universal driving device includes drive control component, one end of drive control component is fixedly connected peristaltic pump head by conversion connecting component, or one end of drive control component is directly fixedly connected diaphragm pump, drive control component includes bottom plate, the top of bottom plate is equipped with power supply, the top of power supply is equipped with drive motor and mainboard, the side of drive motor away from mainboard is equipped with driver, the one end of bottom plate is equipped with heat sink, the top of bottom plate and heat sink is covered with shell, the top of shell is equipped with touch control screen, conversion connecting component includes sequentially connected connecting piece main body, transmission shaft and rubber adapter, the one end of transmission shaft away from rubber adapter is fixedly connected coupling.Peristaltic pump and diaphragm pump universal driving device has the advantages of improving the universality of drive control, improving the convenience of conversion connection, improving the level of integration, reducing cost and increasing efficiency, improving installation efficiency etc.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of general drive device in biopharmaceutical, in particular to a general drive device for peristaltic pump and diaphragm pump and its installation process. BACKGROUND

[0002] At present, peristaltic pump and diaphragm pump are commonly used liquid power sources in biopharmaceutical research and development laboratories and production workshops. Under the existing technology, peristaltic pump and diaphragm pump are separated, and the drive control devices are not universal. When needed, the corresponding space is required to place the equipment. The research and development laboratories and production workshops are limited in space and resources. In addition, the cost is increased, which also causes the cost to rise.

[0003] Therefore, we have developed a general drive device for peristaltic pump and diaphragm pump to solve the above problems. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a general drive device for peristaltic pump and diaphragm pump and its installation process, which has the advantages of improving the universality of drive control, improving the convenience of conversion connection, improving the level of integration, reducing cost and increasing efficiency, and improving installation efficiency.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is: a general drive device for peristaltic pump and diaphragm pump, comprising a drive control assembly, one end of the drive control assembly is fixedly connected to a peristaltic pump head through a conversion connection assembly, or one end of the drive control assembly is directly fixedly connected to a diaphragm pump.

[0006] The drive control assembly comprises a bottom plate, a power supply with a terminal post is arranged at the top end of the bottom plate, a drive motor is arranged on the top end of the power supply through a support, and a main board is arranged thereon, the drive motor is provided with an adjusting knob, and a driver is arranged on the side away from the main board, a heat sink with a fan is vertically arranged at one end of the bottom plate, an outer shell is arranged on the top end of the bottom plate and the heat sink, and a touch control screen is arranged at the top end of the outer shell.

[0007] The conversion connection assembly comprises a male connector body, a transmission shaft and a rubber adapter connected in sequence, and the transmission shaft is fixedly connected to a shaft coupling at the end away from the rubber adapter.

[0008] Preferably, the support is provided with a plurality of first connection holes, one end of the outer shell is provided with a through hole, the connector body is fixedly connected to the first connection holes through the through hole, the connector body is fixedly connected to the peristaltic pump head through a first set of fixing screws, or the first connection holes are fixedly connected to the diaphragm pump through a second set of fixing screws and a third set of fixing screws.

[0009] Preferably, a first rectangular hole is arranged at the top end of the shell, and the first rectangular hole is fixedly connected with the touch control screen; the touch control screen is electrically connected with the driver, the driving motor, the power supply and the mainboard respectively.

[0010] Preferably, the mainboard comprises a mainboard body, first and second support plates are vertically arranged at the two ends of the mainboard body respectively, the mainboard body is provided with a second rectangular hole, and a folded edge is arranged at the top end of the mainboard body; a first connecting lug is arranged at the bottom end of the first support plate, and a second connecting lug is arranged at the middle position of the first support plate; the first connecting lug is fixedly connected with the bottom plate through a second connecting hole; the second connecting lug is fixedly connected with the support through a third connecting hole; a plurality of wire connectors are arranged at the top end of the second support plate, and a third rectangular hole is arranged at the bottom end of the second support plate.

[0011] Preferably, the heat dissipation plate is provided with a heat dissipation body, a support plate, first, second and third insertion edges are sequentially arranged around the heat dissipation body, and a third connecting lug is arranged at each corner of the heat dissipation body; a first fan mounting hole and a second fan mounting hole are arranged on one side of the heat dissipation body in the height direction, and a wire hole is arranged on the other side; a first bent support plate is arranged at the bottom end of the first fan mounting hole; and a second bent support plate is arranged at the top end of the second fan mounting hole.

[0012] Preferably, a stepped hole is arranged at the central position of the connecting piece body, the stepped hole is provided with a ring groove, and a plurality of fourth connecting holes are arranged around the ring groove; the ring groove is clamped with a first clamping spring.

[0013] Preferably, the transmission shaft is sequentially provided with a flat shaft end, a clamping groove and a round shaft end; the flat shaft end is inserted with the rubber adapter; the clamping groove is clamped with a second clamping spring; and the round shaft end is fixedly connected with the shaft coupling.

[0014] Preferably, a bearing is inserted in the transmission shaft; one end of the bearing abuts against the first clamping spring, and the other end of the bearing abuts against the second clamping spring.

[0015] Preferably, a first stepped groove is arranged at one end of the rubber adapter, and a second stepped groove is arranged at the other end of the rubber adapter; the first stepped groove is provided with a first flat groove; the second stepped groove is provided with a second flat groove; the second flat groove is inserted with the flat shaft end; the peristaltic pump head is inserted with the first flat groove, and is fixedly connected with the connecting piece body through the fourth connecting hole.

[0016] Compared with the prior art, the application has the following advantages due to the use of the above technical solutions:

[0017] The peristaltic pump and the diaphragm pump universal driving device integrates the peristaltic pump and the diaphragm pump into one universal driving control device, improves the universality, and reduces the production cost.

[0018] The drive control device can be connected to different biopharmaceutical pumps, and the connection can be changed through the first connection hole or the conversion connection component, which improves the convenience and versatility of the connection, and reduces costs and increases efficiency.

[0019] The use of rubber adapters facilitates the conversion connection between the drive unit and the peristaltic pump, and the fourth and eighth connection holes facilitate external connections.

[0020] The universal drive unit is integrated into the base plate and locked in place by plugging in the housing, which improves integration, reduces space occupation, and improves installation efficiency. Attached Figure Description

[0021] Appendix Figure 1 This is a schematic diagram of the structure of the universal drive device for peristaltic pumps and diaphragm pumps described in this invention.

[0022] Appendix Figure 2 This is a schematic diagram of the connection between the peristaltic pump and the universal drive device described in this invention.

[0023] Appendix Figure 3 This is a schematic diagram of the connection between the diaphragm pump and the general drive device described in this invention.

[0024] Appendix Figure 4 This is an exploded view of the universal drive device for peristaltic pumps and diaphragm pumps described in this invention.

[0025] Appendix Figure 5 This is a schematic diagram of the motherboard described in this invention.

[0026] Appendix Figure 6 This is a schematic diagram of the structure of the heat dissipation body described in this invention.

[0027] Appendix Figure 7 This is a schematic diagram of the structure of the conversion connector described in this invention.

[0028] Appendix Figure 8 Appendix to this invention Figure 7 Enlarged view of point A in the middle. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] Appendix Figure 1 To be continued Figure 8 In this invention, a universal drive device for peristaltic pumps and diaphragm pumps is disclosed, comprising a drive control component 1. One end of the drive control component 1 is fixedly connected to a peristaltic pump head 3 via a conversion connection component 2. When the peristaltic pump head 3 is connected, the drive control component 1 needs to be connected via the conversion connection component 2.

[0031] In order to improve the versatility and integration level of the drive, the drive control assembly 1 comprises a base plate 100, a power supply 11, a driver 9, a main board 14, a heat dissipation plate 13, a shell 12 and a touch control screen 8. The top end of the base plate 100 is provided with a power supply 11 with a terminal post 111, and the terminal post 111 is electrically connected with the main board 14, the driver 9, the drive motor 10, the touch control screen 8 and the fan of the heat dissipation plate 13. The top end of the power supply 11 is provided with a drive motor 10 through a support 101, and the drive motor 10 is a stepping motor or a servo motor. The upper side of the power supply 11 is provided with a main board 14, and the drive motor 10 is provided with an adjusting knob 105 for controlling the flow of the pumped liquid. The side of the drive motor 10 away from the main board 14 is provided with a driver 9, which is a servo controller or a stepping controller. One end of the base plate 100 is vertically provided with a heat dissipation plate 13 with a fan, and the heat dissipation plate 13 dissipates heat for the drive control assembly 1 through the fan. The top end of the base plate 100 and the heat dissipation plate 13 is covered with a protective shell 12, and the top end of the shell 12 is provided with a touch control screen 8. The touch control screen 8 inputs and outputs relevant data information, such as the flow rate range of the pump head, and the flow rate is determined by the speed and the size of the pipe diameter.

[0032] In order to facilitate the connection of the peristaltic pump to the drive control assembly 1, the conversion connection assembly 2 comprises a male connector body 15, a transmission shaft 20 and a rubber adapter 16 connected in sequence. The end of the transmission shaft 20 away from the rubber adapter 16 is fixedly connected with a shaft coupling 19.

[0033] The support 101 is provided with a plurality of first connection holes 109, one end of the shell 12 is provided with a through hole 122, and the through hole 122 is provided with a first connection hole 109. The top end of the shell 12 is provided with a first rectangular hole 121, and the first rectangular hole 121 is fixedly connected with the touch control screen 8. The connector body 15 passes through the through hole 122 and the first connection hole 109 and is fixedly connected. The connector body 15 and the peristaltic pump head 3 are fixedly connected through the first fixing screw set 4. The touch control screen 8 is electrically connected with the driver 9, the drive motor 10, the power supply 11 and the main board 14 respectively.

[0034] The heat dissipation plate 13 is provided with a heat dissipation body 131, and the heat dissipation body 131 is sequentially provided with a bent support plate 132, a first insertion edge 133, a second insertion edge 134 and a third insertion edge 135 around the heat dissipation body 131, the first insertion edge 133 and the second insertion edge 134 are inserted with the shell 12, the support plate 132 is provided with a fixing hole 1321, the heat dissipation body 131 is provided with a third connecting lug 139 at each corner of the heat dissipation body 131, the third connecting lug 139 is fixedly connected with the shell 12, one side of the heat dissipation body 131 in the height direction is provided with a first punched fan mounting hole 137 and a second punched fan mounting hole 138, the bottom end of the first punched fan mounting hole 137 is provided with a first bent support plate 1372, the top end of the second punched fan mounting hole 138 is provided with a second bent support plate 1382, and the other side of the heat dissipation body 131 is provided with a wiring hole 136, the wiring hole 136 is fixedly connected with the second support plate 143 through a fifth connecting hole 1361 and a ninth connecting hole 1432.

[0035] In order to control the driving control assembly 1, the main plate 14 comprises a main plate body 141, and a first support plate 142 and a second support plate 143 are vertically arranged at both ends of the main plate body 141. The main plate body 141 is provided with a second rectangular hole 1411, the power supply 11 is connected with the wiring plug 1433 through the second rectangular hole 1411, the top end of the main plate 14 is provided with a bent edge 145, the bottom end of the first support plate 142 is provided with a first connecting lug 1421, the first connecting lug 1421 is fixedly connected with the bottom plate 100 through the second connecting hole 103, and the middle position of the main plate 14 is provided with a second connecting lug 1422, the second connecting lug 1422 is fixedly connected with the support 101 through the third connecting hole 102. The top end of the second support plate 143 is provided with a plurality of wiring plugs 1433, and the bottom end is provided with a third rectangular hole 1431.

[0036] In order to facilitate the fixed connection of the peristaltic pump head 3 and the driving control assembly 1, the center position of the connecting piece body 15 is provided with a convex stepped hole 151, the small end of the stepped hole 151 is provided with a ring groove 155, the periphery of one side of the large end of the stepped hole 151 is provided with a plurality of fourth connecting holes 152, the ring groove 155 is clamped with the first clamping spring 17, and the first clamping spring 17 is clamped with the transmission shaft 20.

[0037] In order to facilitate the conversion connection of the driving motor 10 and the peristaltic pump head 3, one end of the rubber adapter 16 is provided with a first stepped groove 161, the first stepped groove 161 is provided with a first flat groove 162, the other end of the rubber adapter 16 is provided with a second stepped groove 163, and the second stepped groove 163 is provided with a second flat groove 164. The second flat groove 164 is inserted with the flat shaft end 201, the peristaltic pump head 3 is inserted with the first flat groove 162, and the peristaltic pump head 3 is fixedly connected with the connecting piece body 15 through the fourth connecting hole 152.

[0038] The transmission shaft 20 is provided with a flat shaft end 201, a clamping groove 205 and a round shaft end 202 in sequence, the flat shaft end 201 is inserted with the rubber adapter 16, the clamping groove 205 is clamped with a second clamping spring 21, and the round shaft end 202 is fixedly connected with the shaft coupling 19. The transmission shaft 20 is inserted with a bearing 18, one end of the bearing 18 abuts against the first clamping spring 17, and the other end of the bearing 18 abuts against the second clamping spring 21, so as to facilitate the transmission connection.

[0039] When the diaphragm pump 6 is connected, one end of the drive control assembly 1 is directly fixedly connected with the diaphragm pump 6, and the first connecting hole 109 is fixedly connected with the diaphragm pump 6 through the second fixing screw group 5 and the third fixing screw group 7. The diaphragm pump 6 or the peristaltic pump head 3 uses the same drive control assembly 1, and the universality of the drive control device reduces the production cost.

[0040] The mounting process of the universal drive device of the peristaltic pump and the diaphragm pump comprises the following steps:

[0041] S10. The top end of the bottom plate 100 is fixedly connected with the power supply 11, the power supply 11 is provided with a plurality of connecting posts 111, and the bottom plate 100 is fixedly connected with the drive motor 10 through the support 101 at one end, the drive motor 10 is provided with an adjusting button 105 for adjusting the flow of the pump, the side of the support 101 away from the drive motor 10 is provided with the first connecting hole 109, the drive motor 10 is arranged on the upper side of the power supply 11, the driver 9 is fixedly installed on one side of the power supply 11, and the drive motor 10 is electrically connected with the connecting posts 111.

[0042] S20. The support plate 132 is provided with a fixing hole 1321, the bottom plate 100 is fixedly installed with the heat dissipation body 131 through the fixing hole 1321 at the other end, the first connecting lug 1421 is fixedly connected to the second connecting hole 103 of the bottom plate 100, the second connecting lug 1422 is fixedly connected to the third connecting hole 102 on one side of the support 101, the heat dissipation body 131 is provided with a fifth connecting hole 1361, the second support plate 143 is fixedly connected with the wiring hole 136 through the fifth connecting hole 1361 and the ninth connecting hole 1432, the heat dissipation body 131 is provided with a sixth connecting hole 1371, the first fan passes through the first fan mounting hole 137, the first fan is fixedly connected to the heat dissipation body 131 through the sixth connecting hole 1371 at the four corners of the first fan mounting hole 137 and abuts against the first bending support plate 1372 on the lower side of the first fan mounting hole 137, and the heat dissipation body 131 is provided with a seventh connecting hole 1381, the second fan passes through the second fan mounting hole 138, and the second fan is fixedly connected to the heat dissipation body 131 through the seventh connecting hole 1381 at the four corners of the second fan mounting hole 138.

[0043] S30. The terminal 111 of the power supply 11 is electrically connected with the driver 9, the touch control screen 8, the driving motor 10, the mainboard 14 and the fan respectively, and the touch control screen 8 is fixed to the first rectangular hole 121, and the touch control screen 8 inputs and outputs relevant data through the mainboard 14.

[0044] S40. The bottom end of the shell 12 is fixedly connected to the mounting round hole at the four corners of the bottom plate 100, and the third connecting lug 139 is vertically arranged at the four corners of the heat dissipation body 131, and the heat dissipation body 131 is inserted into the shell 12 at the two sides of the height, and the third connecting lug 139 is fixedly connected to one end of the shell 12.

[0045] S50. When the peristaltic pump head 3 is used, the first connecting hole 109 of the support 101 is fixedly connected with the fourth connecting hole 152 of the connecting piece body 15, the connecting piece body 15 is provided with the eighth connecting hole 153, then the first fixing screw set 4 is inserted into the eighth connecting hole 153 of the connecting piece body 15, so that the peristaltic pump head 3 is fixed to the connecting piece body 15 of the conversion connecting assembly 2.

[0046] S60. When the diaphragm pump 6 is used, the diaphragm pump 6 is fixed to the first connecting hole 109 of the support 101 through the second fixing screw set 5, and then is fixed through the third fixing screw set 7, and the diaphragm pump 6 uses the same driving control assembly 1 as the peristaltic pump head 3.

[0047] The universal control device 1 is composed of the touch control screen 8, the driver 9 (i.e. a servo controller or a step controller), the driving motor 10 (i.e. a servo motor or a step motor), the power supply 11, the shell 12, the heat dissipation plate 13 with a fan and the mainboard 14. The touch control screen 8 is used to input and output relevant data information. The driver 9 and the driving motor 10 are used to drive the standard peristaltic pump head 3 or the standard diaphragm pump head 6 to operate. The heat dissipation plate 13 with a fan is used for overall heat dissipation. The mainboard 14 is the brain of the universal control device 1 and is used for overall control operation.

[0048] The universal control device 1 can be combined with the pump head conversion connecting piece 2, the standard peristaltic pump head 3 and the first fixing screw set 4 to form a peristaltic pump to realize the control of liquid flow.

[0049] The universal control device 1 can be combined with the second fixing screw set 5, the standard diaphragm pump 6 and the third fixing screw set 7 to form a diaphragm pump to realize the control of liquid flow.

[0050] The pump head conversion connecting piece 2 is composed of the connecting piece body 15, the rubber adapter 16, the first clasp spring 17, the bearing 18, the shaft coupling 19, the transmission shaft 20 made of metal material and the second clasp spring 21, so that the standard peristaltic pump head 3 is installed with the universal control device 1.

[0051] After the integration, the general control device 1 can realize the multi-mode operation of the peristaltic pump and the diaphragm pump in two states. The maximum benefit value is realized.

[0052] The above is only a specific application example of the present application, and does not constitute any limitation on the protection scope of the present application. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the present application.

Claims

1. A universal drive for peristaltic and diaphragm pumps, characterized by: Including drive control assembly (1), one end of drive control assembly (1) is fixedly connected with peristaltic pump head (3) through conversion connecting assembly (2), or one end of drive control assembly (1) is fixedly connected with diaphragm pump (6) directly; The drive control assembly (1) includes a bottom plate (100), the top end of the bottom plate (100) is provided with a power supply (11) with a terminal post (111), the top end of the power supply (11) is provided with a drive motor (10) through a support (101), and a main board (14) is provided, the drive motor (10) is provided with an adjusting knob (105), and the side away from the main board (14) is provided with a driver (9), one end of the bottom plate (100) is provided with a heat dissipation plate (13) with a fan vertically, the top end of the bottom plate (100) and the heat dissipation plate (13) are covered with an outer shell (12), the top end of the outer shell (12) is provided with a touch control screen (8); The conversion connecting assembly (2) includes a male connecting piece body (15), a transmission shaft (20) and a rubber adapter (16) connected in sequence, one end of the transmission shaft (20) away from the rubber adapter (16) is fixedly connected with a shaft coupling (19); The support (101) is provided with a plurality of first connecting holes (109), one end of the outer shell (12) is provided with a through hole (122), the connecting piece body (15) passes through the through hole (122) and is fixedly connected with the first connecting holes (109), the connecting piece body (15) and the peristaltic pump head (3) are fixedly connected through a first fixing screw group (4), or the first connecting holes (109) and the diaphragm pump (6) are fixedly connected through a second fixing screw group (5) and a third fixing screw group (7); The top end of the outer shell (12) is provided with a first rectangular hole (121), the first rectangular hole (121) is fixedly connected with the touch control screen (8), the touch control screen (8) is electrically connected with the driver (9), the drive motor (10), the power supply (11), and the main board (14) respectively; The main board (14) includes a main board body (141), first and second support plates (142) and (143) are vertically arranged at both ends of the main board body (141) respectively, the main board body (141) is provided with a second rectangular hole (1411), and a top end is provided with a folded edge (145), a first connecting lug (1421) is arranged at the bottom end of the first support plate (142), and a second connecting lug (1422) is arranged at the middle position, the first connecting lug (1421) is fixedly connected with the bottom plate (100) through a second connecting hole (103), the second connecting lug (1422) is fixedly connected with the support (101) through a third connecting hole (102), a plurality of wire connectors (1433) are arranged at the top end of the second support plate (143), and a third rectangular hole (1431) is arranged at the bottom end. The heat dissipation plate (13) is provided with a heat dissipation body (131), the heat dissipation body (131) is sequentially provided with a support plate (132), a first insertion edge (133), a second insertion edge (134) and a third insertion edge (135) around, and third connecting ears (139) are arranged at the four corners, one side of the heat dissipation body (131) in the height direction is provided with a first fan mounting hole (137) and a second fan mounting hole (138), and the other side is provided with a wiring hole (136), the bottom end of the first fan mounting hole (137) is provided with a first bending support plate (1372), and the top end of the second fan mounting hole (138) is provided with a second bending support plate (1382). The center position of the connecting piece body (15) is provided with a stepped hole (151), the stepped hole (151) is provided with a ring groove (155), and a plurality of fourth connecting holes (152) are arranged around, the ring groove (155) is clamped with a first snap spring (17).

2. The universal drive apparatus for peristaltic and membrane pumps according to claim 1, wherein, The transmission shaft (20) is sequentially provided with a flat shaft end (201), a clamping groove (205) and a round shaft end (202), the flat shaft end (201) is inserted with the rubber adapter (16), the clamping groove (205) is clamped with a second snap spring (21), and the round shaft end (202) is fixedly connected with the shaft coupling (19).

3. The universal drive apparatus for peristaltic and diaphragm pumps of claim 2, wherein, The transmission shaft (20) is inserted with a bearing (18), one end of the bearing (18) abuts against the first snap spring (17), and the other end abuts against the second snap spring (21).

4. The universal drive apparatus for peristaltic and diaphragm pumps according to claim 3, wherein, One end of the rubber adapter (16) is provided with a first stepped groove (161), and the other end is provided with a second stepped groove (163), the first stepped groove (161) is provided with a first flat groove (162), the second stepped groove (163) is provided with a second flat groove (164), the second flat groove (164) is inserted with the flat shaft end (201), the peristaltic pump head (3) is inserted with the first flat groove (162), and is fixedly connected with the connecting piece body (15) through the fourth connecting hole (152).

5. The mounting process of the universal driving device for peristaltic pump and diaphragm pump according to claim 1, characterized in that, The method comprises the following steps: S10. The top end of the bottom plate (100) is fixedly connected with a power supply (11), and one end of the bottom plate (100) is fixedly connected with a driving motor (10) through a support (101), the driving motor (10) is arranged on the upper side of the power supply (11), and the driver (9) is fixedly installed on one side of the power supply (11); S20. The support plate (132) is provided with a fixing hole (1321), the other end of the bottom plate (100) is fixedly installed the heat dissipation body (131) through the fixing hole (1321), the first connecting lug (1421) is fixedly connected to the second connecting hole (103), the second connecting lug (1422) is fixedly connected to the third connecting hole (102), the heat dissipation body (131) is provided with a fifth connecting hole (1361), the second support plate (143) and the wiring hole (136) are fixedly connected through the fifth connecting hole (1361), the heat dissipation body (131) is provided with a sixth connecting hole (1371), the first fan passes through the first fan mounting hole (137) and is fixedly connected to the heat dissipation body (131) through the sixth connecting hole (1371), the first bent support plate (1372) abuts against the first fan, the heat dissipation body (131) is provided with a seventh connecting hole (1381), the second fan passes through the second fan mounting hole (138) and is fixedly connected to the heat dissipation body (131) through the seventh connecting hole (1381); S30. Electrically connect the power supply (11), the driver (9), the touch control screen (8), the driving motor (10), the mainboard (14) and the fan, and fix the touch control screen (8) to the first rectangular hole (121); S40. Fix the bottom end of the shell (12) to the bottom plate (100), and fix the third connecting lug (139) to one end of the shell (12); S50. When the peristaltic pump head (3) is used, fix the first connecting hole (109) of the support (101) to the fourth connecting hole (152) of the connecting piece body (15), the connecting piece body (15) is provided with an eighth connecting hole (153), then pass the first fixing screw set (4) into the eighth connecting hole (153) of the connecting piece body (15), so as to fix the peristaltic pump head (3) to the connecting piece body (15) of the conversion connecting assembly (2); S60. When the diaphragm pump (6) is used, fix the diaphragm pump (6) to the first connecting hole (109) of the support (101) through the second fixing screw set (5), and then fix through the third fixing screw set (7), the diaphragm pump (6) and the peristaltic pump head (3) use the same driving control assembly (1).

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