Gear pump capable of being rapidly expanded

Abstract

The utility model discloses a kind of gear pumps that can be quickly expanded, the device includes front end shell, gear assembly and end cap;The gear assembly is assembled in front end shell, end cap and one or more front end shell corresponding cooperation installation, for realizing the separate installation of gear pump, multiple pump independent operation and multiple pump parallel expansion;The utility model solves the current traditional gear pump external structure complex changeable, cannot efficiently change the pressure medium provided by gear pump many needs etc. problems, simultaneously due to the utility model structure simple, control simple, safe and reliable, technology is mature, actual solution field can simply, efficiently install oil pump or increase the maximum displacement of oil pump.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic equipment technology, and in particular to a gear pump that can be quickly expanded. Background Technology

[0002] Gear pumps are widely used in surface engineering equipment, tunneling equipment, and mining equipment. However, they fail to provide a simple, quick, safe, and convenient way to change the maximum displacement of the pump on-site. This results in the need to replace the pump with a larger displacement pump when insufficient oil supply occurs, preventing efficient capacity expansion. Alternatively, when additional pumps are needed to transport other media, it is necessary to add matching prime movers and pumps, hindering the quick addition and installation of pumps. This leads to increased equipment costs and wasted working time. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a gear pump that can be quickly added and expanded, which can realize the simple, quick, safe and convenient change of the oil pump capacity on site, can adjust the inlet and outlet oil ports at will, and can provide separate transportation of various grades of oil, thereby reducing production and operation costs and saving energy.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a gear pump that can be quickly installed and expanded, the gear pump including a front housing, a gear assembly and an end cap; the gear assembly is assembled in the front housing, and the end cap is installed in correspondence with one or more front housings, so as to realize the individual installation of the gear pump, independent operation of multiple pumps and parallel expansion of multiple pumps.

[0005] Preferably, a volume chamber is provided on one side of the front end housing, an annular sealing groove is provided on the outer edge of the volume chamber, and a first countersunk hole, a second countersunk hole, a third countersunk hole and a fourth countersunk hole are provided in the four corner areas of the front end housing. A first shaft hole and a second shaft hole are provided on the other side of the front end housing.

[0006] Preferably, the outer edges of the first shaft hole and the second shaft hole are respectively provided with a first sealing axial sealing groove and a second sealing axial sealing groove. The first shaft hole and the first sealing axial sealing groove are arranged in concentric circles, and the second shaft hole and the second sealing axial sealing groove are arranged in concentric circles. A sealing element is installed in the annular sealing groove to prevent the medium from leaking from the contact end face of the front housing.

[0007] Preferably, one end of the front housing is provided with an internally connected first channel hole and a third channel hole, and the other end is provided with an internally connected second channel hole and a fourth channel hole. The outer sides of the first channel hole and the second channel hole are respectively provided with a first circular sealing groove and a second circular sealing groove.

[0008] Preferably, the first channel hole, the second channel hole, the third channel hole, and the fourth channel hole are respectively provided with a first thread, a second thread, a third thread, and a fourth thread; the first circular sealing groove is arranged concentrically with the first channel hole, and the second circular sealing groove is arranged concentrically with the second channel hole; sealing elements are installed in the first circular sealing groove and the second circular sealing groove respectively to prevent leakage at the contact surface of the first channel hole and the second channel hole.

[0009] Preferably, the gear assembly includes a driving gear, a driven gear, a plug, and a countersunk bolt disposed within the front end housing, wherein the driving gear and the driven gear mesh; the driving gear has a first gear shaft on one side and a second gear shaft on the other side, a first bushing and a second bushing are respectively installed on the first gear shaft and the second gear shaft, respectively, the first gear shaft has a first tenon groove inside, and the second gear shaft has a first tenon outside, the first tenon groove and the first tenon are fitted in size; the driven gear has a third gear shaft on one side and a fourth gear shaft on the other side, the third bushing and the fourth bushing are respectively installed on the third gear shaft and the fourth gear shaft; the first gear shaft and the second gear shaft are both fitted in size with the first shaft hole, and the third gear shaft and the fourth gear shaft are both fitted in size with the second shaft hole.

[0010] Preferably, the first bushing, the second bushing, the third bushing, and the fourth bushing are all outer edge sliding bearings used to protect the front end housing, the end cap, the driving gear, and the driven gear; the plug has a first internal hexagonal tenon groove on its inner side and a first external thread on its outer side, and the plug has a pre-reserved sealing position with the first channel hole, the second channel hole, the third channel hole, and the fourth channel hole, and after being installed by the thread, it does not exceed the outer surface of the front end housing.

[0011] Preferably, the countersunk bolt has a second external thread on the outer side and a second internal hexagonal tenon groove and a first internal thread on the inner side. The second external thread and the first internal thread are matched in size. The multiple countersunk bolts are respectively matched with the first countersunk hole, the second countersunk hole, the third countersunk hole and the fourth countersunk hole.

[0012] Preferably, the end cap has a first through hole, a second through hole, a third through hole, and a fourth through hole in the four corner areas, and a first blind hole and a second blind hole are respectively provided on the upper and lower sides of the end cap; the first blind hole and the second blind hole are respectively matched with the dimensions of the first gear shaft and the third gear shaft; the first through hole, the second through hole, the third through hole, and the fourth through hole correspond one-to-one with the first countersunk hole, the second countersunk hole, the third countersunk hole, and the fourth countersunk hole.

[0013] The beneficial effects of this utility model are as follows: This utility model enables simple, quick, safe, and convenient on-site modification of the oil pump capacity, allows for arbitrary adjustment of the inlet and outlet ports, and can provide individual delivery of various grades of oil, effectively reducing production and operating costs and saving energy. It solves the problems of complex and variable external structures of traditional gear pumps and their inability to efficiently change the pressure medium required by the gear pump. Furthermore, due to its simple structure, straightforward control, safety, reliability, and mature technology, this utility model allows for the simple and efficient on-site installation of oil pumps or the increase of the maximum displacement of existing oil pumps. Attached Figure Description

[0014] Figure 1 A schematic diagram of the front housing structure of a gear pump that can be quickly expanded; Figure 2 for Figure 1 A schematic diagram of the right-side view structure; Figure 3 for Figure 1 A schematic diagram of the AA cross-sectional structure; Figure 4 for Figure 1 Schematic diagram of the BB cross-sectional structure; Figure 5 for Figure 1 A schematic diagram of the FF cross-sectional structure; Figure 6 for Figure 1 Schematic diagram of the cross-sectional structure of GG; Figure 7 A schematic diagram of the end cap structure of a gear pump that can be quickly expanded. Figure 8 for Figure 7 Schematic diagram of the DD cross-sectional structure; Figure 9 for Figure 7 A schematic diagram of the EE cross-sectional structure; Figure 10 This is a schematic diagram of the drive gear. Figure 11 for Figure 10 A schematic diagram of the right-side view structure; Figure 12 for Figure 10 A schematic diagram of the left-side view structure; Figure 13 for Figure 12 Schematic diagram of the HH cross-sectional structure; Figure 14 This is a schematic diagram of the driven gear. Figure 15 for Figure 14 A schematic diagram of the right-side view structure; Figure 16 for Figure 14A schematic diagram of the left-side view structure; Figure 17 for Figure 16 Schematic diagram of the II section structure; Figure 18 The diagram shows the front view, top view, and cross-sectional view of the plug. Figure 19 This is a schematic diagram of the front view, left view, and CC section view of the countersunk bolt. Figure 20 This is a schematic diagram showing the operating state of the gear pump. Figure 21 After the three-layer pump body is assembled, Figure 1 Schematic diagram of the cross-sectional structure of region AA; Figure 22 After the three-layer pump body is assembled, Figure 1 Schematic diagram of the cross-sectional structure of region BB. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Example 1: As Figure 1-22 As shown, a gear pump that can be quickly added and expanded includes a front housing 1, a gear assembly, and an end cap 21. The gear assembly is assembled inside the front housing 1, and the end cap 21 is installed in correspondence with one or more front housings 1, which is used to realize the individual addition of the gear pump, independent operation of multiple pumps, and parallel expansion of multiple pumps.

[0017] The front housing 1 has a volume chamber 13 on one side, and an annular sealing groove 2 is formed on the outer edge of the volume chamber 13. The front housing 1 has a first countersunk hole 3, a second countersunk hole 4, a third countersunk hole 5, and a fourth countersunk hole 6 in the four corner areas. The front housing 1 has a first shaft hole 14 and a second shaft hole 16 on the other side. The first shaft hole 14 and the second shaft hole 16 have a first axial sealing groove 15 and a second axial sealing groove 17 on their outer edges, respectively. The first shaft hole 14 and the first axial sealing groove 15 are arranged in concentric circles, and the second shaft hole 16 and the second axial sealing groove 17 are arranged in concentric circles. A sealing element is installed in the annular sealing groove 2 to prevent the medium from leaking from the contact end face of the front housing 1.

[0018] The front end housing 1 has an internally connected first channel hole 8 and a third channel hole 11 at one end, and an internally connected second channel hole 10 and a fourth channel hole 12 at the other end. The first channel hole 8 and the second channel hole 10 are respectively provided with a first circular sealing groove 7 and a second circular sealing groove 9 on their outer sides. The first channel hole 8, the second channel hole 10, the third channel hole 11, and the fourth channel hole 12 are respectively provided with a first thread 50, a second thread 51, a third thread 52, and a fourth thread 53. The first circular sealing groove 7 and the first channel hole 8 are arranged in a concentric circle, and the second circular sealing groove 9 and the second channel hole 10 are arranged in a concentric circle. Sealing elements are installed in the first circular sealing groove 7 and the second circular sealing groove 9 to prevent leakage at the contact surface of the first channel hole 8 and the second channel hole 10.

[0019] The gear assembly includes a driving gear 31, a driven gear 41, a plug 38, and a countersunk bolt 46 disposed within the front housing 1. The driving gear 31 and the driven gear 41 mesh. The driving gear 31 has a first gear shaft 32 on one side and a second gear shaft 34 on the other side. A first bushing 36 and a second bushing 37 are respectively installed on the first gear shaft 32 and the second gear shaft 34. The first gear shaft 32 has a first tenon 33 inside, and the second gear shaft 34 has a first tenon 35 outside. The first tenon 33 and the first tenon 35 are sized to fit together. The driven gear 41 has a third gear shaft 42 on one side and a fourth gear shaft 43 on the other side. A third bushing 44 and a fourth bushing 45 are respectively installed on the third gear shaft 42 and the fourth gear shaft 43. The first gear shaft 32 and the second gear shaft 34 are both sized to fit the first shaft hole 14, and the third gear shaft 42 and the fourth gear shaft 43 are both sized to fit the second shaft hole 16.

[0020] The first bushing 36, the second bushing 37, the third bushing 44, and the fourth bushing 45 are all outer edge sliding bearings used to protect the front end housing 1, the end cap 21, the driving gear 31, and the driven gear 41. The plug 38 has a first internal hexagonal tenon groove 39 on its inner side and a first external thread 40 on its outer side. The plug 38 has a pre-reserved sealing position with the first channel hole 8, the second channel hole 10, the third channel hole 11, and the fourth channel hole 12, and after being installed by thread, it does not exceed the outer surface of the front end housing 1. The countersunk bolt 46 has a second external thread 47 on its outer side and a second internal hexagonal tenon groove 48 and a first internal thread 49 on its inner side. The second external thread 47 and the first internal thread 49 are matched in size. The multiple countersunk bolts 46 respectively mate with the first countersunk hole 3, the second countersunk hole 4, the third countersunk hole 5, and the fourth countersunk hole 6.

[0021] The end cap 21 has a first through hole 22, a second through hole 23, a third through hole 24, and a fourth through hole 25 at its four corners. The end cap 21 has a first blind hole 26 and a second blind hole 27 on its upper and lower sides, respectively. The first blind hole 26 and the second blind hole 27 are respectively matched with the dimensions of the first gear shaft 32 and the third gear shaft 42. The first through hole 22, the second through hole 23, the third through hole 24, and the fourth through hole 25 correspond one-to-one with the first countersunk hole 3, the second countersunk hole 4, the third countersunk hole 5, and the fourth countersunk hole 6, respectively.

[0022] Example 2: A method for installing and operating a single gear pump that can be quickly upgraded with a gear pump, comprising the following steps: Step 1: Insert the four countersunk bolts 46 into the first countersunk hole 3, the second countersunk hole 4, the third countersunk hole 5, and the fourth countersunk hole 6 of the front housing 1 respectively; Step 2: Use plug 38 to plug the first channel hole 8 and the second channel hole 10 of the front housing 1; Step 3: Assemble and fix the end cap 21 to the front housing 1; Step 4: The torque is applied through the first tenon 35 of the drive gear 31, which drives the drive gear 31 to rotate and can synchronously drive the driven gear 41 to rotate; the medium flows through the fourth channel hole 12 into the volume chamber 13, and after being compressed and increased in pressure by the rotation of the drive gear 31 and the driven gear 41, it flows out from the third channel hole 11, realizing the operation process of a single gear pump.

[0023] Example 3: A method for the independent installation and operation of a multi-gear pump that can be quickly upgraded with a gear pump, comprising the following steps: Step 1: Insert the four countersunk bolts 46 into the first countersunk hole 3, the second countersunk hole 4, the third countersunk hole 5, and the fourth countersunk hole 6 of the front housing 1 respectively; Step 2: Use plug 38 to plug the first channel hole 8 and the second channel hole 10 of the front housing 1; Step 3: Then, use countersunk bolts 46 to install and fix the second front end housing 1 onto the first front end housing 1 that has already been installed. In the actual installation process, directly pass a set of countersunk bolts 46 through the first through hole 22, the second through hole 23, the third through hole 24, and the fourth through hole 25 respectively. Then, screw the second external thread 47 of the bolt into the first internal thread 49 of the countersunk bolt 46 in the front end housing 1 to complete the installation process. The second internal hexagonal tenon 48 can be easily screwed in using tools.

[0024] Step 4: Use plug 38 to plug the first channel hole 8 and the second channel hole 10 of the second front end housing 1; Step 5: Insert the first tenon 35 of the drive gear 31 inside the second front housing 1 into the first tenon 33 of the first drive gear 31; Step 6: Repeat the above process, that is, install and fix the next front end housing 1 on the installed previous front end housing 1 by using countersunk bolts 46, then use plugs 38 to block the first channel hole 8 and the second channel hole 10 of the next front end housing 1, and finally insert the first tenon 35 of the drive gear 31 in the next front end housing 1 into the first tenon 33 of the previous drive gear 31. Step 7: Assemble and fix the end cap 21 to the front housing 1; Step 8: After the first tenon 35 of the first front housing 1 is connected to the torque, it can synchronously drive the driving gear 31 and driven gear 41 in the front housing 1, realize the continuous and independent operation of multiple gear pumps, form multiple gear pumps with independent inlet and outlet, and can transport different media.

[0025] Example 4: A method for parallel expansion and operation of multi-gear pumps with rapidly installable and expanded gear pumps, comprising the following steps: Step 1: Insert the four countersunk bolts 46 into the first countersunk hole 3, the second countersunk hole 4, the third countersunk hole 5, and the fourth countersunk hole 6 of the front housing 1 respectively; Step 2: Use plug 38 to block the third channel hole 11 and the fourth channel hole 12 of the front housing 1; Step 3: Then, use countersunk bolts 46 to install and fix the second front end housing 1 onto the already installed first front end housing 1; Step 4: Use plug 38 to plug the third channel hole 11 and the fourth channel hole 12 of the second front end housing 1; Step 5: Insert the first tenon 35 of the drive gear 31 inside the second front housing 1 into the first tenon 33 of the first drive gear 31; Step 6: Repeat the above process, that is, install and fix the next front end housing 1 to the installed previous front end housing 1 by using countersunk bolts 46, then use plugs 38 to block the third channel hole 11 and the fourth channel hole 12 of the next front end housing 1, and finally insert the first tenon 35 of the drive gear 31 in the next front end housing 1 into the first tenon 33 of the previous drive gear 31. Step 7: Assemble and fix the end cap 21 to the front housing 1; Step 8: After the first tenon 35 of the first front housing 1 is connected to the torque, it can synchronously drive the driving gear 31 and driven gear 41 in the front housing 1, so as to realize the continuation and parallel expansion of multiple gear pumps and form a shared inlet and outlet expansion gear pump.

[0026] Preferably, in the above embodiment, when the end cap 21 is assembled and fixed with the front housing 1, a set of countersunk bolts 46 or ordinary bolts are passed through the first through hole 22, the second through hole 23, the third through hole 24, and the fourth through hole 25 respectively. Then, the external thread of the bolt is screwed into the first internal thread 49 of the countersunk bolt 46 in the front housing 1. The exposed part of the countersunk bolt 46 located on the outside of the front housing 1 extends into the drive mechanism mounting hole, and then is installed on the surface of the second external thread 47 of the countersunk bolt 46 by a nut, thereby clamping and fixing the end cap 21 with the front housing 1.

[0027] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A gear pump that can be quickly expanded in capacity, characterized in that, The gear pump includes a front housing (1), a gear assembly, and an end cap (21); the gear assembly is assembled inside the front housing (1), and the end cap (21) is installed in correspondence with one or more front housings (1) to realize the individual installation of the gear pump, independent operation of multiple pumps, and parallel expansion of multiple pumps.

2. The gear pump with rapid capacity expansion according to claim 1, characterized in that, The front end housing (1) has a volume chamber (13) on one side, and an annular sealing groove (2) is provided on the outer edge of the volume chamber (13). The front end housing (1) has a first countersunk hole (3), a second countersunk hole (4), a third countersunk hole (5), and a fourth countersunk hole (6) in the four corner areas. The front end housing (1) has a first shaft hole (14) and a second shaft hole (16) on the other side.

3. A gear pump with rapid capacity expansion according to claim 2, characterized in that, The first shaft hole (14) and the second shaft hole (16) are respectively provided with a first sealing axial sealing groove (15) and a second sealing axial sealing groove (17). The first shaft hole (14) and the first sealing axial sealing groove (15) are arranged in concentric circles, and the second shaft hole (16) and the second sealing axial sealing groove (17) are arranged in concentric circles. A sealing element is installed in the annular sealing groove (2) to prevent the medium from leaking from the contact end face of the front housing (1).

4. A gear pump with rapid capacity expansion according to claim 2, characterized in that, The front end housing (1) has an internally connected first channel hole (8) and a third channel hole (11) at one end, and an internally connected second channel hole (10) and a fourth channel hole (12) at the other end. The first channel hole (8) and the second channel hole (10) are respectively provided with a first circular sealing groove (7) and a second circular sealing groove (9) on the outside.

5. A gear pump with rapid capacity expansion according to claim 4, characterized in that, The first channel hole (8), the second channel hole (10), the third channel hole (11), and the fourth channel hole (12) are respectively provided with a first thread (50), a second thread (51), a third thread (52), and a fourth thread (53); the first circular sealing groove (7) is arranged concentrically with the first channel hole (8), and the second circular sealing groove (9) is arranged concentrically with the second channel hole (10); sealing elements are installed in the first circular sealing groove (7) and the second circular sealing groove (9) respectively to prevent leakage at the contact surface of the first channel hole (8) and the second channel hole (10).

6. A gear pump with rapid capacity expansion according to claim 2, characterized in that, The gear assembly includes a driving gear (31), a driven gear (41), a plug (38), and a countersunk bolt (46) disposed in the front housing (1). The driving gear (31) and the driven gear (41) mesh. The driving gear (31) has a first gear shaft (32) on one side and a second gear shaft (34) on the other side. The first bushing (36) and the second bushing (37) are respectively installed on the first gear shaft (32) and the second gear shaft (34). The first gear shaft (32) has a first tenon (33) inside and the second gear shaft (34) has a first tenon (33) outside. A first tenon (35) is provided, and a first mortise (33) is provided with the size of the first tenon (35); a third gear shaft (42) is provided on one side of the driven gear (41), and a fourth gear shaft (43) is provided on the other side; a third bushing (44) and a fourth bushing (45) are respectively installed on the third gear shaft (42) and the fourth gear shaft (43); the first gear shaft (32) and the second gear shaft (34) are both provided with the size of the first shaft hole (14), and the third gear shaft (42) and the fourth gear shaft (43) are both provided with the size of the second shaft hole (16).

7. A gear pump with rapid capacity expansion according to claim 6, characterized in that, The first bushing (36), the second bushing (37), the third bushing (44), and the fourth bushing (45) are all outer edge sliding bearings used to protect the front end housing (1), the end cap (21), the driving gear (31), and the driven gear (41). The plug (38) has a first internal hexagonal tenon groove (39) on its inner side and a first external thread (40) on its outer side. The plug (38) has a pre-reserved sealing position with the first channel hole (8), the second channel hole (10), the third channel hole (11), and the fourth channel hole (12), and after being installed by thread, it is not higher than the outer surface of the front end housing (1).

8. A gear pump with rapid capacity expansion according to claim 6, characterized in that, The countersunk bolt (46) has a second external thread (47) on the outside and a second internal hexagonal tenon groove (48) and a first internal thread (49) on the inside. The second external thread (47) and the first internal thread (49) are matched in size. The multiple countersunk bolts (46) are respectively matched with the first countersunk hole (3), the second countersunk hole (4), the third countersunk hole (5) and the fourth countersunk hole (6).

9. A gear pump with rapid capacity expansion according to claim 4, characterized in that, The end cap (21) has a first through hole (22), a second through hole (23), a third through hole (24), and a fourth through hole (25) in the four corner areas respectively. The end cap (21) has a first blind hole (26) and a second blind hole (27) on the upper and lower sides respectively. The first blind hole (26) and the second blind hole (27) are respectively matched with the dimensions of the first gear shaft (32) and the third gear shaft (42). The first through hole (22), the second through hole (23), the third through hole (24), and the fourth through hole (25) correspond one-to-one with the first countersunk hole (3), the second countersunk hole (4), the third countersunk hole (5), and the fourth countersunk hole (6).

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