Transfer pump

Abstract

The utility model belongs to the technical field of transmission, and particularly relates to a transmission pump which is characterized by comprising a driving device, a first pump head, a second pump head and a pump head switching mechanism linked with the driving device, the first pump head and the second pump head. The pump head switching mechanism is used for controlling the first pump head to work when the driving device rotates in the first direction and used for controlling the second pump head to work when the driving device rotates in the second direction. Wherein the first direction is opposite to the second direction. On one hand, the two pump heads are arranged to meet the conveying requirements of various consumables, pollution between the different consumables can be avoided, on the other hand, control switching of the first pump head and the second pump head can be achieved through forward rotation and reverse rotation of the driving shaft, and conveying control over the different consumables can be achieved through simple control instructions.

Description

Technical Field

[0001] The present application belongs to the field of transmission technology, and specifically relates to a transmission pump. Background Art

[0002] Existing consumable transfer pumps can generally only transport a single type of liquid at a time. When multiple different types of consumables need to be transported, if one existing transfer pump is used to transfer different types of consumables in batches, there will be a problem of mutual contamination between different types of consumables. If multiple existing transfer pumps are set up to transfer different types of consumables respectively, contamination of consumables can also be avoided, but the control complexity will increase, and multiple existing transfer pumps will need to occupy a larger installation space. Utility Model Content

[0003] An embodiment of the present application provides a transmission pump that can solve the problem of how to prevent contamination of consumables and simplify transmission control when transmitting a variety of consumables.

[0004] The present application provides a transmission pump, comprising: a driving device, a first pump head, a second pump head, and a pump head switching mechanism linking the driving device, the first pump head and the second pump head;

[0005] The pump head switching mechanism is used to control the first pump head to work when the driving device rotates in the first direction, and is used to control the second pump head to work when the driving device rotates in the second direction;

[0006] The first direction is opposite to the second direction.

[0007] In an optional embodiment, the driving device includes a driving shaft, and the pump head switching mechanism includes a first one-way driving component and a second one-way driving component respectively sleeved on the driving shaft;

[0008] The driving shaft drives the first pump head to rotate in a first direction through the first unidirectional driving component; the driving shaft drives the second pump head to rotate in a second direction through the second unidirectional driving component.

[0009] In an optional embodiment, the first pump head is a hollow structure, the first unidirectional driving component is a hollow first cylinder, the first cylinder is arranged in the first pump head and is coaxially sleeved on the driving shaft with the first pump head, and the first cylinder and the first pump head are in a meshing connection state through the matching first ratchet and second ratchet;

[0010] The second pump head is a hollow structure, the second one-way driving component is a hollow second cylinder, the second cylinder is arranged in the second pump head and is coaxially sleeved on the driving shaft with the second pump head, and the second cylinder and the second pump head are in a meshing connection state through the matching third ratchet and fourth ratchet.

[0011] Wherein, the extending direction of the first ratchet tooth is opposite to the extending direction of the third ratchet tooth.

[0012] In an optional embodiment, the first cylinder includes a first meshing end meshingly connected to the first pump head and a first extending end extending from the first meshing end, the first meshing end is provided with a first ratchet tooth, and the diameter of the first extending end is smaller than the first meshing end;

[0013] The second cylinder comprises a second meshing end meshedly connected to the second pump head and a second extending end extending from the second meshing end, the second meshing end is provided with a third ratchet tooth, and the diameter of the second extending end is smaller than the second meshing end.

[0014] In an optional embodiment, the pump head switching mechanism further includes an elastic member disposed between the first unidirectional driving component and the second unidirectional driving component, and two ends of the elastic member are respectively sleeved on the first extending end and the second extending end.

[0015] In an optional embodiment, the transmission pump further includes a bearing assembly sleeved on the drive shaft and located between the first one-way drive component and the second one-way drive component;

[0016] The pump head switching mechanism also includes a first elastic member disposed between the first one-way driving component and the bearing assembly;

[0017] The pump head switching mechanism further includes a second elastic member disposed between the second one-way driving component and the bearing assembly.

[0018] In an optional embodiment, the bearing assembly includes a bearing sleeved on the drive shaft and a first bracket and a second bracket respectively arranged on both sides of the bearing;

[0019] One end of the first elastic member is sleeved on the first extension end, and the other end is supported on the first bracket;

[0020] One end of the second elastic member is sleeved on the second extension end, and the other end is supported by the second bracket.

[0021] In an optional embodiment, the transmission pump further comprises: a pump head housing, a pump head cover, a first hose, a second hose, a first interface group, and a second interface group;

[0022] The pump head housing and the pump head cover form a receiving space, and the first pump head and the second pump head are located in the receiving space;

[0023] The first hose is located between the first pump head and the pump head housing, and the first interface group is arranged on the pump head housing and is respectively connected with two ends of the first hose;

[0024] The second hose is located between the second pump head and the pump head housing. The second interface group is arranged on the pump head housing and is respectively communicated with two ends of the second hose.

[0025] In an optional embodiment, the first pump head includes a first pump head body linked to the pump head switching mechanism and a plurality of first extrusion parts arranged on the first pump head body;

[0026] The first extrusion portion is a roller rotatably connected to the outer side surface of the first pump head body, or the first extrusion portion is a protrusion structure integrally formed with the outer side surface of the first pump head body.

[0027] In an optional embodiment, the second pump head includes a second pump head body linked to the pump head switching mechanism and a plurality of second extrusion parts arranged on the second pump head body;

[0028] The second extrusion portion is a roller rotatably connected to the outer side surface of the second pump head body, or the second extrusion portion is a protrusion structure integrally formed with the outer side surface of the second pump head body.

[0029] In an embodiment of the present application, two pump heads are provided in the transmission pump, namely, a first pump head and a second pump head, and a pump head switching mechanism is provided for a linkage drive device, the first pump head and the second pump head. The pump head switching mechanism is used to control the first pump head to work when the drive device rotates in a first direction, and is used to control the second pump head to work when the drive device rotates in a second direction. In this way, on the one hand, the provision of two pump heads can cope with the transmission requirements of a variety of consumables and avoid contamination between different consumables. On the other hand, the control switching between the first pump head and the second pump head can be achieved by the forward and reverse rotation of the drive shaft, and the transmission control of different consumables can be achieved through simple control instructions. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the structure of a transmission pump provided in an embodiment of the present application;

[0031] Figure 2 It is a disassembled schematic diagram of the transmission pump provided in the embodiment of the present application;

[0032] Figure 3 is a cross-sectional schematic diagram of a transmission pump provided in an embodiment of the present application;

[0033] Figure 4 is a schematic diagram of the structure of a one-way driving component provided in an embodiment of the present application;

[0034] Figure 5 is a cross-sectional schematic diagram of a pump head provided in an embodiment of the present application;

[0035] Figure 6 This is one of the schematic diagrams of the structure of the pump head provided in the embodiment of the present application;

[0036] Figure 7 This is the second structural schematic diagram of the pump head provided in the embodiment of the present application. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0038] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0039] The transmission pump provided in the embodiment of the present application is described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

[0040] See also Figures 1 to 7 The present application is implemented to provide a transmission pump, including: a first pump head 1, a second pump head 2, a driving device 3, and a pump head switching mechanism that links the driving device 3, the first pump head 1 and the second pump head 2.

[0041] The pump head switching mechanism is used to control the operation of the first pump head 1 when the driving device 3 rotates along the first direction, and is used to control the operation of the second pump head 2 when the driving device rotates along the second direction; wherein the first direction is opposite to the second direction, and optionally, the rotation of the driving device 3 along the first direction is referred to as forward rotation, and the rotation of the driving device 3 along the second direction is referred to as reverse rotation.

[0042] In the embodiment of the present application, the pump head switching mechanism is used to realize the control of the first pump head 1 and the second pump head 2 respectively when the driving device 3 rotates forward and reverse, so that the control switching of the first pump head and the second pump head can be realized only by the forward and reverse rotation of the driving device, and the transmission control of different consumables can be realized through simple control instructions.

[0043] Optionally, the transmission pump further comprises: a pump head housing 4 and a pump head cover 5;

[0044] like Figure 1 and 2As shown, the pump head housing 4 and the pump head cover 5 form a accommodating space, and the first pump head 1 and the second pump head 2 are located in the accommodating space; the pump head housing 4 and the pump head cover 5 form a protective shell for protecting the internal pump head and preventing the external environment from affecting the operation of the pump head.

[0045] like Figure 2 As shown, the first pump head 1, the second pump head 2 and the driving device 3 are arranged in a linear sequence;

[0046] In an optional embodiment, the driving device 3 includes a driving shaft 31, and the pump head switching mechanism includes a first unidirectional driving component 11 and a second unidirectional driving component 21 respectively sleeved on the driving shaft 31;

[0047] The driving shaft 31 drives the first pump head 1 to rotate in the first direction through the first unidirectional driving component 11 ; the driving shaft 31 drives the second pump head 2 to rotate in the second direction through the second unidirectional driving component 21 .

[0048] The one-way driving component is used to realize the driving function in one direction;

[0049] like Figure 2 and 3 As shown, a driving shaft 31 is provided on the driving device 3, and the driving shaft 31 extends into the accommodating space and is drivingly connected to the first one-way driving component 11 and the second one-way driving component 21 respectively; the driving connection refers to realizing the driving function between the two components through the connection, and realizing the transmission of the driving force. In the embodiment of the present application, the driving connection realizes that the driving force of the driving shaft 31 can be transmitted to the first one-way driving component 11 and the second one-way driving component 21, so that the driving shaft 31 drives the first one-way driving component 11 and the second one-way driving component 21 to move.

[0050] When the driving device 3 controls the driving shaft 31 to rotate in the first direction, the driving shaft 31 drives the first pump head 1 to rotate in the first direction through the first unidirectional driving component 11, and the second pump head 2 remains in a non-working state;

[0051] When the driving device 3 controls the driving shaft 31 to rotate in the second direction, the driving shaft 31 drives the second pump head 2 to rotate in the second direction through the second unidirectional driving component 21, and the first pump head 1 remains in a non-working state;

[0052] The first direction is opposite to the second direction. Optionally, in this embodiment, the first direction is the forward rotation direction of the driving shaft 31 of the driving device 3 , and the second direction is the reverse rotation direction of the driving shaft 31 of the driving device 3 .

[0053] In the embodiment of the present application, the driving directions of the first unidirectional driving component 11 and the second unidirectional driving component 21 are opposite, so that when the driving shaft 31 rotates along the first direction, the driving function of the first unidirectional driving component 11 takes effect, and can drive the first pump head 1 to rotate along the first direction, while the driving function of the second unidirectional driving component 21 does not take effect, so the second pump head 2 is still in a non-working state; similarly, when the driving shaft 31 rotates along the second direction, the driving function of the second unidirectional driving component 21 takes effect, and can drive the second pump head 2 to rotate along the second direction, while the driving function of the first unidirectional driving component 11 does not take effect, so the first pump head 1 is still in a non-working state.

[0054] In this way, on the one hand, setting up two pump heads can meet the transmission needs of various consumables and avoid contamination between different consumables. On the other hand, the control switching between the first pump head and the second pump head can be achieved through the forward and reverse rotation of the drive shaft, and the transmission control of different consumables can be achieved through simple control instructions.

[0055] The driving device 3 may specifically be a driving motor.

[0056] It should be noted that the first pump head 1 and the second pump head 2 refer to two pump heads provided in the transmission pump, and the first pump head 1 and the second pump head 2 are respectively used to transmit different types of consumables. When the driving motor rotates forward, the first pump head 1 works and the second pump head 2 does not work. When the driving motor rotates reversely, the first pump head 1 does not work and the second pump head 2 works, so that the transmission of different consumables can be controlled by only relying on the forward and reverse rotation control of the driving motor.

[0057] It is understandable that the present application does not limit the specific number of the first pump head and the second pump head. The drawings show a scenario in which one first pump head and one second pump head are respectively provided. In actual applications, multiple first pump heads and multiple second pump heads can be provided as required.

[0058] For example: four pump heads are set, namely pump head a, pump head b, pump head c, and pump head d, wherein pump head a and pump head c are the first pump head, and pump head b and pump head d are the second pump head, wherein pump head a and pump head c are used to convey consumable A, and pump head b and pump head d are used to convey consumable B. When consumable A needs to be conveyed, the drive motor is controlled to rotate forward, pump head a and pump head c work, and pump head b and pump head d do not work, so as to realize the conveyance of consumable A. When consumable B needs to be conveyed, the drive motor is controlled to rotate reversely, pump head b and pump head d work, and pump head a and pump head c do not work, so as to realize the conveyance of consumable B.

[0059] Furthermore, the consumables transported by the above-mentioned pump head a and pump head c may also be of different types. For example, pump head a is used to transport consumable A, pump head c is used to transport consumable B, and pump head b and pump head d are used to transport consumable C. When consumables A and B need to be transported, the drive motor is controlled to rotate forward, pump head a and pump head c work, and pump head b and pump head d do not work, thereby realizing the transportation of consumables A and B. When consumable C needs to be transported, the drive motor is controlled to rotate backward, pump head b and pump head d work, and pump head a and pump head c do not work, thereby realizing the transportation of consumable C.

[0060] As exemplified above, there is no specific limitation on the number of the first pump head and the second pump head and the types of consumables transported in the pump heads, and they can be flexibly set according to actual needs.

[0061] The above-mentioned consumables include but are not limited to toothpaste, cleaning fluid, facial cleanser, skin care products and other consumables, and this application does not impose any restrictions on this. Accordingly, the transmission pump provided in this application can be used in personal care devices such as electric toothbrushes, facial cleansers, hair combs, skin care devices, massagers, etc., and this application does not impose any restrictions on its application.

[0062] In an optional embodiment, the first pump head 1 is a hollow structure, the first unidirectional driving component 11 is a hollow first cylinder, the first cylinder is arranged in the first pump head 1 and is coaxially sleeved on the driving shaft 31 with the first pump head 1, and the first cylinder and the first pump head 1 are in a meshing connection state through the matching first ratchet 110 and the second ratchet;

[0063] The second pump head 2 is a hollow structure, and the second one-way driving component 21 is a hollow second cylinder. The second cylinder is arranged in the second pump head 2 and is coaxially sleeved on the driving shaft 31 with the second pump head. The second cylinder and the second pump head 2 are in a meshing connection state through the matching third ratchet 210 and fourth ratchet.

[0064] The extending direction of the first ratchet tooth 110 is opposite to the extending direction of the third ratchet tooth 210 .

[0065] See Figure 3 In an optional embodiment, the first pump head 1 is a hollow structure having a first top wall and a first bottom wall. Figure 3 Taking the direction of the scene shown as an example, the first top wall is the upper end wall of the first pump head 1 in the figure, the first bottom wall is the lower end wall of the first pump head 1 in the figure, the first unidirectional driving component 11 is a first cylinder, the driving shaft 31 extends from the first bottom wall into the first pump head 1, the first cylinder is sleeved on the driving shaft 31, a first ratchet 110 is arranged on one of the two opposite end faces of the first cylinder, a second ratchet is arranged on the first top wall or the first bottom wall, and the first ratchet 110 cooperates with the second ratchet;

[0066] The second pump head 2 is a hollow structure having a second top wall and a second bottom wall. Figure 3Taking the direction of the scene shown as an example, the second top wall is the upper end wall of the second pump head 2 in the figure, the second bottom wall is the lower end wall of the second pump head 2 in the figure, the second unidirectional driving component 21 is a second cylinder, the driving shaft 31 extends from the second bottom wall into the second pump head 2, the second cylinder is sleeved on the driving shaft 31, a third ratchet 210 is arranged on one of the two opposite end faces of the second cylinder, a fourth ratchet 210 is arranged on the second top wall or the second bottom wall, and the third ratchet 210 cooperates with the fourth ratchet;

[0067] In an alternative embodiment, see Figure 4 The first cylinder includes a first meshing end 111 meshedly connected to the first pump head 1 and a first extending end 112 extending from the first meshing end 111, the first meshing end 111 is provided with a first ratchet 110, and the diameter of the first extending end 112 is smaller than the first meshing end 111;

[0068] The second cylinder includes a second meshing end 211 meshedly connected to the second pump head 2 and a second extending end 212 extending from the second meshing end 211 . The second meshing end 211 is provided with a third ratchet tooth 210 . The diameter of the second extending end 212 is smaller than that of the second meshing end 211 .

[0069] The extending direction of the first ratchet 110 is opposite to the extending direction of the third ratchet 210, that is, the one-way driving function in different directions is realized by different extending directions of the ratchet. Figure 4 As shown, it should be noted that Figure 4 Only the specific structure of one of the first cylinder and the second cylinder is shown, and the specific ratchet extension direction of the other is the same as Figure 4 The opposite of.

[0070] In the embodiment of the present application, the one-way driving component is specifically a cylinder with ratchet teeth. The advantage of using the cylinder is that the cylinder is used as a rotating body, which is convenient for the driving shaft 31 to drive it to rotate; for a specific pump head, the pump head has a top wall and a bottom wall inside, and ratchets are also provided on either of the two walls for cooperating with the ratchets on the cylinder. For example, when the driving shaft 31 drives the first cylinder and the second cylinder to rotate forward, the first ratchet teeth 110 cooperate with the second ratchet teeth to generate thrust between each other, driving the first pump head 1 to rotate forward synchronously, while the third ratchet teeth 210 have opposite extension directions, and no thrust is generated between the third ratchet teeth 210 and the fourth ratchet teeth, thereby achieving the second pump head 2 to remain in a non-working state; when the driving shaft 31 drives the first cylinder and the second cylinder to reverse, the third ratchet teeth 210 cooperate with the fourth ratchet teeth to generate thrust between each other, driving the second pump head 2 to reverse synchronously, while the first ratchet teeth 110 have opposite extension directions, and no thrust is generated between the first ratchet teeth 110 and the second ratchet teeth, thereby achieving the first pump head 1 to remain in a non-working state.

[0071] In an optional embodiment, the pump head switching mechanism further includes an elastic member disposed between the first unidirectional driving component and the second unidirectional driving component, and two ends of the elastic member are respectively sleeved on the first extending end and the second extending end.

[0072] In an embodiment of the present application, an elastic member is provided with both ends respectively sleeved on the first cylinder and the second cylinder, and the elastic member generates a supporting force on the first cylinder and the second cylinder at the same time to ensure that the ratchet on the cylinder can mesh with the ratchet in the pump head.

[0073] In an optional embodiment, the transmission pump further includes a bearing assembly sleeved on the drive shaft and located between the first one-way drive component and the second one-way drive component;

[0074] The pump head switching mechanism further includes a first elastic member 12 disposed between the first one-way driving component and the bearing assembly;

[0075] The pump head switching mechanism further includes a second elastic member 22 disposed between the second one-way driving component and the bearing assembly.

[0076] See Figure 3 and Figure 5 In an optional embodiment, a first elastic member 12 is disposed inside the first pump head 1, one end of the first elastic member 12 is fixed to the first cylinder, when the second ratchet is disposed on the first top wall, the other end of the first elastic member 12 is fixed to the first bottom wall, when the second ratchet is disposed on the first bottom wall, the other end of the first elastic member 12 is fixed to the first top wall, and when the first ratchet 110 cooperates with the second ratchet, the first elastic member 12 is in a natural state or a compressed state;

[0077] A second elastic member 22 is arranged inside the second pump head 2, and one end of the second elastic member 22 is fixed on the second cylinder body. When the fourth ratchet is arranged on the second top wall, the other end of the second elastic member 22 is fixed on the second bottom wall. When the fourth ratchet is arranged on the second bottom wall, the other end of the second elastic member 22 is fixed on the second top wall. When the third ratchet cooperates with the fourth ratchet, the second elastic member 22 is in a natural state or a compressed state.

[0078] in, Figure 5 The specific structure inside the second pump head 2 is specifically shown. It can be understood that the specific structure inside the first pump head 1 can be referred to Figure 5 set up.

[0079] In an embodiment of the present application, an elastic member is arranged inside the pump head, which may be a spring, and the accompanying drawings show a scene in which the elastic member is a spring; one end of the elastic member is fixed to the cylinder, and the other end is fixed to an end of the pump head where no ratchet is arranged. The function of the elastic member is to generate a supporting force on the cylinder, ensuring that the cylinder can be pressed against the end of the pump head where the ratchet is arranged, ensuring that the ratchet on the cylinder and the ratchet on the pump head can cooperate with each other.

[0080] Optionally, the elastic member may be in a natural state or a compressed state. In both states, the elastic member generates a supporting force on the cylinder to ensure reliable fit between the ratchet teeth on the cylinder and the ratchet teeth on the pump head.

[0081] Optionally, the elastic member may also be an elastic member such as a torsion spring or a spring.

[0082] See Figure 3 and Figure 5 In an optional embodiment, a second ratchet is provided on the first top wall, and a fourth ratchet is provided on the second bottom wall; that is, in the embodiment of the present application, the positions of the ratchet are as follows Figure 3 and Figure 5 Set up as shown;

[0083] It should be noted that Figure 3 , 5 The scene shown is a scene where two elastic members are provided. For the above-described situation where an elastic member with two ends respectively sleeved on the first cylinder and the second cylinder, the deployment method of the elastic member can refer to Figure 3 , 5 , that is, it can be understood that the first elastic member 12 and the second elastic member 22 are combined into one elastic member.

[0084] In an optional embodiment, the bearing assembly includes a bearing 6 sleeved on the drive shaft 31 and a first bracket 13 and a second bracket 23 respectively arranged on both sides of the bearing;

[0085] One end of the first elastic member 12 is sleeved on the first extension end, and the other end is supported by the first bracket 13;

[0086] One end of the second elastic member 22 is sleeved on the second extension end, and the other end is supported by the second bracket 23 .

[0087] In the embodiment of the present application, a first bracket 13 is provided on the first bottom wall of the first pump head 1 , and a second bracket 23 is provided on the second top wall of the second pump head 2 ;

[0088] The first bracket 13 is fixedly connected to the first elastic member 12 on one side facing the interior of the first pump head 1, and the second bracket 23 is fixedly connected to the second elastic member 22 on one side facing the interior of the second pump head 2;

[0089] The driving shaft 31 is sleeved with a bearing 6 , and the bearing 6 is respectively assembled with a side of the first bracket 13 facing the outside of the first pump head 1 and a side of the second bracket 23 facing the outside of the second pump head 2 .

[0090] In the implementation of this application, the role of the bearing 6 is to improve the rotational stability of the pump head. From the perspective of saving the internal space of the transmission pump, in order to maximize the role of the bearing 6, a first bracket 13 and a second bracket 23 are respectively arranged at the end adjacent to the first pump head 1 and the second pump head 2. The bracket can also be called a bearing bracket. The bearing 6 is respectively assembled with the first bracket 13 and the second bracket 23, so that one bearing 6 can improve the rotational stability of the first pump head 1 and the second pump head 2 at the same time, and save the internal space of the transmission pump.

[0091] Furthermore, the bearing bracket is used to fix the elastic member inside the pump head while realizing assembly with the bearing.

[0092] It should be noted that since the attached drawings take the scenario of setting a first pump head and a second pump head as an example, for the case of setting a larger number of first pump heads and a second pump head, multiple bearings can be set based on the same principle, that is, bearings can be set between adjacent first pump heads and second pump heads to achieve improved rotational stability for both the first pump head and the second pump head.

[0093] See Figure 1 and Figure 2 In an optional embodiment, the transmission pump further includes: a first hose 7, a second hose 8, a first interface group 9, and a second interface group 10;

[0094] The first hose 7 is located between the first pump head 1 and the pump head housing 4 and is arranged around the first pump head 1. The first interface group 9 is arranged on the pump head housing 4 and is communicated with both ends of the first hose 7 respectively.

[0095] The second hose 8 is located between the second pump head 2 and the pump head housing 4 and is arranged around the second pump head 2. The second interface group 10 is arranged on the pump head housing 4 and is communicated with both ends of the second hose 8 respectively.

[0096] In an optional embodiment, the first pump head 1 includes a first pump head body 101 linked to the pump head switching mechanism and a plurality of first extrusion parts 102 disposed on the first pump head body 101;

[0097] The first extrusion portion 102 is a roller rotatably connected to the outer side surface of the first pump head body 101 , or the first extrusion portion 102 is a protrusion structure integrally formed with the outer side surface of the first pump head body 101 .

[0098] In an optional embodiment, the second pump head 2 includes a second pump head body 201 linked to the pump head switching mechanism and a plurality of second extrusion parts 202 disposed on the second pump head body 201;

[0099] The second extrusion portion 202 is a roller rotatably connected to the outer side surface of the second pump head body 201 , or the second extrusion portion 202 is a protrusion structure integrally formed with the outer side surface of the second pump head body 201 .

[0100] See Figure 6 and Figure 7 A plurality of first extrusion portions 102 are arranged on the outer side of the first pump head 1 , and a plurality of second extrusion portions 202 are arranged on the outer side of the second pump head 2 .

[0101] In the embodiment of the present application, the transmission pump specifically adopts a peristaltic pump design, and its working principle is that the pump head rotates, driving the extrusion part on the outer periphery of the pump head to rotate, and the extrusion part cooperates with the pump head shell to squeeze the hose. Since multiple extrusion parts are arranged on the outer periphery of the pump head, the hose is squeezed alternately to form pressure inside the tube. The pressure serves as the conveying power for the consumables in the tube, thereby realizing the transmission of the consumables in the hose.

[0102] It should be noted that the drawings show a scene in which three extrusion parts are arranged on the periphery of the pump head. It is understandable that the embodiment of the present application does not limit the number of extrusion parts arranged on the periphery of the pump head, and can be flexibly arranged according to actual needs. Optionally, multiple extrusion parts are evenly distributed on the periphery of the pump head to ensure a stable consumables delivery rate.

[0103] In an optional embodiment, if Figure 6 As shown, the first extrusion portion 102 is a roller rotatably connected to the outer side of the first pump head 1, or as shown in Figure 7 As shown, the first extrusion portion 102 is a protruding structure integrally formed with the outer side surface of the first pump head 1;

[0104] like Figure 6 As shown, the second extrusion portion 202 is a roller rotatably connected to the outer side of the second pump head 2, or as shown in Figure 7 As shown, the second extrusion portion 202 is a protruding structure integrally formed with the outer side surface of the second pump head 2 .

[0105] In the embodiments of the present application, the extrusion portion may specifically adopt a roller structure to reduce the frictional resistance between the extrusion portion and the hose; or the extrusion portion may specifically adopt a raised structure integrally formed with the pump head. The one-piece design simplifies the overall structure, reduces the overall volume of the pump head, and can also avoid the risk of the roller falling off and causing the pump head to get stuck.

[0106] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0107] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0108] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0109] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0110] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications are also within the scope of protection of the present application.

Claims

1. A transmission pump, characterized in that: include: A driving device, a first pump head, a second pump head, and a pump head switching mechanism that links the driving device, the first pump head, and the second pump head; The pump head switching mechanism is used to control the first pump head to work when the driving device rotates in a first direction, and is used to control the second pump head to work when the driving device rotates in a second direction; wherein the first direction is opposite to the second direction; The driving device comprises a driving shaft, and the pump head switching mechanism comprises a first one-way driving component and a second one-way driving component respectively sleeved on the driving shaft; wherein the driving shaft drives the first pump head to rotate in the first direction through the linkage of the first one-way driving component; and the driving shaft drives the second pump head to rotate in the second direction through the linkage of the second one-way driving component; The first pump head is a hollow structure, the first one-way driving component is a hollow first cylinder, the first cylinder is arranged in the first pump head and is coaxially sleeved on the driving shaft with the first pump head, and the first cylinder and the first pump head are in a meshing connection state through matching first ratchet teeth and second ratchet teeth; The second pump head is a hollow structure, the second one-way driving component is a hollow second cylinder, the second cylinder is arranged in the second pump head and is coaxially sleeved on the driving shaft with the second pump head, and the second cylinder and the second pump head are in a meshing connection state through matching third ratchet teeth and fourth ratchet teeth; Wherein, an extending direction of the first ratchet tooth is opposite to an extending direction of the third ratchet tooth.

2. The transmission pump according to claim 1, characterized in that: The first cylinder comprises a first meshing end meshedly connected to the first pump head and a first extending end extending from the first meshing end, the first meshing end is provided with the first ratchet, and the diameter of the first extending end is smaller than the first meshing end; The second cylinder includes a second meshing end meshingly connected to the second pump head and a second extending end extending from the second meshing end, the second meshing end is provided with the third ratchet tooth, and the diameter of the second extending end is smaller than that of the second meshing end.

3. The transmission pump according to claim 2, characterized in that: The pump head switching mechanism further includes an elastic member disposed between the first unidirectional driving component and the second unidirectional driving component, and two ends of the elastic member are respectively sleeved on the first extending end and the second extending end.

4. The transmission pump according to claim 2, characterized in that: The transmission pump further comprises a bearing assembly sleeved on the drive shaft and located between the first one-way drive component and the second one-way drive component; The pump head switching mechanism further comprises a first elastic member disposed between the first one-way driving component and the bearing assembly; The pump head switching mechanism further includes a second elastic member disposed between the second one-way driving component and the bearing assembly.

5. The transmission pump according to claim 4, characterized in that: The bearing assembly comprises a bearing sleeved on the driving shaft and a first bracket and a second bracket respectively arranged on both sides of the bearing; One end of the first elastic member is sleeved on the first extension end, and the other end is supported by the first bracket; One end of the second elastic member is sleeved on the second extension end, and the other end is supported by the second bracket.

6. The transmission pump according to any one of claims 1 to 5, characterized in that: The transmission pump further comprises: a pump head housing, a pump head cover, a first hose, a second hose, a first interface group, and a second interface group; The pump head housing and the pump head cover form a receiving space, and the first pump head and the second pump head are located in the receiving space; The first hose is located between the first pump head and the pump head housing, and the first interface group is arranged on the pump head housing and is respectively connected to two ends of the first hose; The second hose is located between the second pump head and the pump head housing. The second interface group is arranged on the pump head housing and is respectively connected to two ends of the second hose.

7. The transmission pump according to claim 6, characterized in that The first pump head includes a first pump head body linked to the pump head switching mechanism and a plurality of first extrusion parts arranged on the first pump head body; The first extrusion portion is a roller rotatably connected to the outer side surface of the first pump head body, or the first extrusion portion is a protrusion structure integrally formed with the outer side surface of the first pump head body.

8. The transmission pump according to claim 6, characterized in that: The second pump head includes a second pump head body linked to the pump head switching mechanism and a plurality of second extrusion parts arranged on the second pump head body; The second extrusion portion is a roller rotatably connected to the outer side surface of the second pump head body, or the second extrusion portion is a protrusion structure integrally formed with the outer side surface of the second pump head body.

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