Gear pump for coffee production

Abstract

The utility model belongs to the technical field of gear pumps, and particularly relates to a gear pump for coffee production, which comprises a direct current motor, a rubber plate is arranged on the inner side of a top cover, a wavy groove, an annular groove, a circular groove, a rectangular groove and a cross-shaped groove are arranged on the surface of the rubber plate, the wavy groove is arranged on the outer side of the rubber plate, and the annular groove is arranged on the outer side of the rubber plate. The wave-shaped grooves are composed of V-shaped grooves in an annular array, the two sets of annular grooves are located in the inner sides of the wave-shaped grooves, the two sets of circular grooves and the two sets of rectangular grooves are arranged, one set of circular grooves is located between one set of annular grooves and one set of rectangular grooves, and the other set of circular grooves is located between the two sets of rectangular grooves; one group of rectangular grooves are located between the two groups of circular grooves, the other group of rectangular grooves are located on the inner sides of one group of circular grooves, and the cross-shaped grooves are located on the inner sides of the rectangular grooves. According to the gear pump for coffee production, through the rubber block and the grooves in the rubber block, noise can be reduced, and the influence of the noise on workers is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pumps, in particular to a gear pump used for coffee production. Background Art

[0002] Coffee is divided into two types: espresso and American coffee. Espresso is made by adding water to ground coffee powder. The contact time between water and coffee powder is short, so the taste is richer. During the production process, a gear pump is usually used to mix the ground coffee powder with water and make espresso through high-pressure injection.

[0003] At present, when the gear pump of coffee production is working, the two gears inside it mesh with each other to generate pressure. Therefore, when conveying coffee beans and powder, friction between the gears and the coffee beans will occur, thereby generating a large noise. If workers are in a noisy environment for a long time, their physiological functions will be affected. Therefore, there is an urgent need for a gear pump for coffee production to solve the above problem. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the inventors have conducted in-depth research and completed the present utility model after paying a lot of creative work.

[0005] Specifically, the technical problem to be solved by the present invention is to provide a gear pump for coffee production to solve the technical problem that the current gear pump generates relatively loud noise during use, which affects the physiological functions of the workers.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A gear pump for coffee production, comprising a DC motor, a magnetic drive coupling mounted on top of the DC motor, a pump head mounted on top of the magnetic drive coupling, an inlet pipe and an outlet pipe mounted on one side of the pump head, a driving gear and a driven gear located inside the pump head, and a top cover mounted on the top of the pump head, wherein a rubber plate is mounted on the inner side of the top cover, and a surface of the rubber plate is provided with a wavy groove, an annular groove, a circular groove, a rectangular groove, and a cross-shaped groove. The wavy groove is located on the outer side of the rubber plate, and the wavy groove is composed of a V-shaped groove in an annular array. The annular groove is provided in two groups and is located inside the wavy groove. The circular groove and the rectangular groove are each provided in two groups and are arranged in an annular array. One group of the circular grooves is located between one group of the annular grooves and one group of the rectangular grooves, and another group of the circular grooves is located between the two groups of the rectangular grooves. One group of the rectangular grooves is located between the two groups of the circular grooves, and another group of the rectangular grooves is located inside the one group of the circular grooves. The cross-shaped groove is located inside the rectangular groove.

[0008] As an improved technical solution, a connecting bolt is fixedly connected to the surface of the pump head, a nut is installed on the top of the top cover, one end of the connecting bolt passes through the rubber plate and extends to the top of the top cover to be threadedly connected to the nut.

[0009] As an improved technical solution, a spherical shell is fixedly connected to the inside of the water outlet pipe, a spherical block is movably connected to the inside of the spherical shell, and through holes are provided in the inside of the spherical shell and the spherical block.

[0010] As an improved technical solution, the top of the spherical block is fixedly connected to a rotating shaft, and one end of the rotating shaft extends to the top of the spherical shell and is movably connected thereto.

[0011] As an improved technical solution, a knob is fixedly connected to the top of the rotating shaft, and a rubber block is fixedly connected to the outer surface of the knob.

[0012] As an improved technical solution, the rubber blocks are arranged in a ring array.

[0013] After adopting the above technical solution, the beneficial effects of the utility model are:

[0014] 1. The utility model can increase the damping effect and sound insulation effect of the rubber plate through the arrangement of the rubber block and the various grooves inside it, effectively reducing the noise generated by the gear pump. At the same time, it can enhance the compressibility and extrudability of the rubber plate, further reducing the transmission of vibration and the generation of noise, thereby avoiding the impact on the staff;

[0015] 2. The utility model can avoid the coffee from being soaked in water for too long or too short by adjusting the flow rate of the finished product inside the water outlet pipe, thereby reducing coffee waste and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 This is a schematic diagram of the overall structure of the gear pump used for coffee production according to the present invention.

[0018] Figure 2 This is a schematic diagram of the related structure of the pump head and top cover of the gear pump used for coffee production of the present invention.

[0019] Figure 3 This is a schematic diagram of the rubber plate structure of the gear pump used in coffee production according to the present invention.

[0020] Figure 4 This is a schematic diagram of the structure related to the water outlet pipe and spherical shell of the gear pump used for coffee production in the present invention.

[0021] Description of reference numerals:

[0022] 1. DC motor; 2. Magnetic drive coupling; 3. Pump head; 4. Water inlet pipe; 5. Water outlet pipe; 6. Driving gear; 7. Driven gear; 8. Top cover; 9. Rubber plate; 91. Wave groove; 92. Annular groove; 93. Circular groove; 94. Rectangular groove; 95. Cross groove; 10. Connecting bolt; 11. Nut; 12. Spherical housing; 13. Spherical block; 14. Through hole; 15. Rotating shaft; 16. Knob; 17. Rubber block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or an option in which both A and B are satisfied.

[0026] In addition, in this utility model, the descriptions of "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0027] like Figures 1 to 4 As shown together, this embodiment provides a gear pump for coffee production, which includes a DC motor 1, a magnetic drive coupling 2 installed on the top of the DC motor 1, a pump head 3 installed on the top of the magnetic drive coupling 2, an inlet pipe 4 and an outlet pipe 5 installed on one side of the pump head 3, a driving gear 6 and a driven gear 7 located inside the pump head 3, a top cover 8 installed on the top of the pump head 3, the output end of the DC motor 1 is connected to the driving gear 6, the driving gear 6 and the driven gear 7 are meshed with each other, and a rubber plate 9 is installed on the inner side of the top cover 8. The surface of the rubber sheet 9 is provided with wavy grooves 91, annular grooves 92, circular grooves 93, rectangular grooves 94, and cross-shaped grooves 95. The elasticity of the rubber sheet 9 enables it to absorb vibration energy such as vibration and noise generated by the driving gear 6, the driven gear 7, and the coffee beans, and convert this energy into the elastic potential energy of the rubber itself, thereby minimizing the propagation and transmission of noise. At the same time, the wavy grooves 91, annular grooves 92, circular grooves 93, rectangular grooves 94, and cross-shaped grooves 95 inside the rubber sheet 9 can also reduce noise interference through elastic reflection;

[0028] The wavy groove 91 is located on the outside of the rubber plate 9. The wavy groove 91 is composed of an annular array of V-shaped grooves. Two groups of annular grooves 92 are provided and are located on the inner side of the wavy groove 91. The multiple structures of the wavy groove 91 and the annular groove 92 can increase the friction on the surface of the rubber plate 9 and reduce the transmission of vibration. In summary, the combination of the two can increase the damping effect and sound insulation effect of the rubber plate 9, effectively reducing the noise generated by the gear pump.

[0029] There are two groups of circular grooves 93 and rectangular grooves 94, and both are arranged in an annular array. One group of circular grooves 93 is located between one group of annular grooves 92 and one group of rectangular grooves 94, and the other group of circular grooves 93 is located between the two groups of rectangular grooves 94. The design of the circular grooves 93 can make the rubber sheet 9 more extrudable, reducing the transmission of vibration and the generation of noise. At the same time, the superposition design of a layer of circular grooves 93 and a layer of rectangular grooves 94 can enhance the compressibility and extrudability of the rubber sheet 9, further reducing the transmission of vibration and the generation of noise.

[0030] One set of rectangular grooves 94 is located between the two sets of circular grooves 93 , and the other set of rectangular grooves 94 is located inside the set of circular grooves 93 ;

[0031] The cross-shaped groove 95 is located inside the rectangular groove 94. The design of the cross-shaped groove 95 can enhance the compressibility and extrudability of the rubber plate 9, reduce excessive friction, and make the gear pump more stable and reliable.

[0032] A connecting bolt 10 is fixedly connected to the surface of the pump head 3, and a nut 11 is installed on the top of the top cover 8. One end of the connecting bolt 10 passes through the rubber plate 9 and extends to the top of the top cover 8 and is threadedly connected to the nut 11, which can increase the stability of the connection between the top cover 8 and the pump head 3, and thus enable the rubber plate 9 to better play a sound insulation effect.

[0033] A spherical shell 12 is fixedly connected to the inside of the water outlet pipe 5, and a spherical block 13 is movably connected to the inside of the spherical shell 12. Through holes 14 are opened in the inside of the spherical shell 12 and the spherical block 13. Under normal conditions, the two groups of through holes 14 are in the same direction as the water outlet pipe 5.

[0034] The top of the spherical block 13 is fixedly connected to a rotating shaft 15 , one end of which extends to the top of the spherical shell 12 and is movably connected thereto, so as to facilitate the rotation of the spherical block 13 inside the spherical shell 12 .

[0035] A knob 16 is fixedly connected to the top of the rotating shaft 15, and a rubber block 17 is fixedly connected to the outer surface of the knob 16, which can facilitate the operator to drive it. At the same time, the setting of the rubber block 17 can also prevent the operator from slipping.

[0036] The rubber blocks 17 are arranged in a ring array.

[0037] During use, the DC motor 1 is started to rotate the driving gear 6, which in turn rotates the driven gear 7, causing coffee beans, water, milk, and other materials to enter the pump head 3 through the water inlet pipe 4. During this process, the driving gear 6 generates power from the rotation of the DC motor 1, and the driven gear 7 rotates along with the driving gear 6 and moves along the wall of the pump chamber, thereby sucking in the fluid in the pump and the water inlet pipe 4 and discharging it through the water outlet pipe 5.

[0038] At the same time, the spherical block 13 can be driven to rotate inside the spherical shell 12 by rotating the knob 16 to adjust the angle between the internal through holes 14 of the spherical block 13 and the internal through holes 14 of the spherical shell 12. When the internal through holes 14 of the spherical block 13 and the internal through holes 14 of the spherical shell 12 are in a horizontal state, the flow rate of the finished product will be maximized. Since the angle between the two sets of through holes 14 is smaller in this state, the liquid can flow more naturally and the flow resistance is smaller. Therefore, in this case, the flow rate of the liquid will be higher. Similarly, when the internal through holes 14 of the spherical block 13 and the internal through holes 14 of the spherical shell 12 are ninety degrees, the flow of the finished product stops. When the angle between the two is an acute angle, the flow of the finished product will be restricted. In summary, by adjusting the flow rate of the finished product inside the water outlet pipe 5, the caffeine water soaking time can be avoided from being too long or too short, thereby reducing coffee waste and improving production efficiency.

[0039] It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention. In addition, it should be understood that after reading the technical content of the present invention, those skilled in the art may make various changes, modifications and / or variations to the present invention, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A gear pump for coffee production, comprising a DC motor (1), a magnetic drive coupling (2) mounted on top of the DC motor (1), a pump head (3) mounted on top of the magnetic drive coupling (2), a water inlet pipe (4) and a water outlet pipe (5) mounted on one side of the pump head (3), a driving gear (6) and a driven gear (7) located inside the pump head (3), and a top cover (8) mounted on top of the pump head (3), characterized in that: A rubber plate (9) is installed on the inner side of the top cover (8), and a surface of the rubber plate (9) is provided with a wave-shaped groove (91), an annular groove (92), a circular groove (93), a rectangular groove (94), and a cross-shaped groove (95); The wavy groove (91) is located on the outside of the rubber plate (9), and the wavy groove (91) is composed of an annular array of V-shaped grooves. Two groups of annular grooves (92) are provided and are located on the inside of the wavy groove (91); The circular grooves (93) and the rectangular grooves (94) are each provided with two groups, and are both arranged in an annular array, one group of the circular grooves (93) is located between one group of the annular grooves (92) and one group of the rectangular grooves (94), and the other group of the circular grooves (93) is located between the two groups of the rectangular grooves (94); One group of rectangular grooves (94) is located between the two groups of circular grooves (93), and the other group of rectangular grooves (94) is located inside the group of circular grooves (93); The cross-shaped groove (95) is located inside the rectangular groove (94).

2. The gear pump for coffee production according to claim 1, characterized in that: A connecting bolt (10) is fixedly connected to the surface of the pump head (3), a nut (11) is installed on the top of the top cover (8), and one end of the connecting bolt (10) passes through the rubber plate (9) and extends to the top of the top cover (8) to be threadedly connected to the nut (11).

3. The gear pump for coffee production according to claim 1, characterized in that: The water outlet pipe (5) is fixedly connected to a spherical shell (12) inside, the spherical shell (12) is movably connected to a spherical block (13) inside, and through holes (14) are provided inside both the spherical shell (12) and the spherical block (13).

4. The gear pump for coffee production according to claim 3, characterized in that: The top of the spherical block (13) is fixedly connected to a rotating shaft (15), and one end of the rotating shaft (15) extends to the top of the spherical shell (12) and is movably connected thereto.

5. The gear pump for coffee production according to claim 4, characterized in that: The top of the rotating shaft (15) is fixedly connected to a knob (16), and the outer surface of the knob (16) is fixedly connected to a rubber block (17).

6. The gear pump for coffee production according to claim 5, characterized in that: The rubber blocks (17) are arranged in a ring array.

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