Three-body type high-pressure pump
By setting through the pump chamber and sealing structure in the cavity of the high-pressure pump, the problem of difficulty in processing and maintenance of existing high-pressure pumps is solved, and higher initial performance and service life are achieved, and wear is further prevented through the filtering and unloading structure.
Patent Information
- Application Number
- CN202421934756.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-08-12
AI Technical Summary
The right-angle area in the pump chamber in the existing high-pressure pumps leads to high processing difficulties and difficulty in post-maintenance and cleaning, affecting initial performance and wear conditions.
A three-body high-pressure pump is designed, which reduces processing difficulty by directly setting the through pump chamber in the cavity, and a sealing structure is set between the pump body and the pump cover to facilitate later maintenance and cleaning.
It realizes the reduction of difficulty during processing and maintenance, improves the initial performance and service life of the pump, and further prevents wear and impurities from entering by setting up a filter and unloading tank.
Smart Images
Figure CN222823384U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-pressure pumps, in particular to a three-body high-pressure pump. Background Art
[0002] In the high-pressure pump in the prior art, since two gears need to be installed in the pump chamber, a right-angle area is formed in the pump chamber, which makes the processing difficulty high during the pump chamber manufacturing process. At the same time, in the later maintenance process, the pump chamber is difficult to clean or even incompletely cleaned due to the existence of the right-angle area. Incomplete cleaning will lead to low initial performance of the high-pressure pump and easy initial wear. Utility Model Content
[0003] The utility model aims to overcome the deficiencies of the prior art and provide a three-body high-pressure pump.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A three-body high-pressure pump, comprising a pump body, a cavity, a pump cover, a shaft sleeve and a gear assembly, wherein the pump body is sealed and fixedly arranged on one end of the cavity, the pump cover is sealed and fixedly arranged on the other end of the cavity, a pump cavity matched with the gear assembly is arranged in the cavity, one end of the gear assembly is arranged on the pump body, the other end of the gear assembly is arranged in the shaft sleeve, one end of the shaft sleeve is arranged in the pump cavity, and the other end of the shaft sleeve is sealed and arranged in the pump cover, a first oil inlet channel and a first oil outlet channel are arranged on the cavity, a second oil inlet channel and a second oil outlet channel are arranged on the pump body, one end of the first oil inlet channel and one end of the first oil outlet channel are both sealed and connected with the pump cavity, the other end of the first oil inlet channel is sealed and connected with one end of the second oil inlet channel, the other end of the first oil outlet channel is sealed and connected with one end of the second oil outlet channel, and the outlet of the first oil inlet channel and the inlet of the first oil outlet channel are respectively arranged on both sides of the gear assembly.
[0006] Furthermore, the gear assembly includes a main gear, a driven gear and a gear shaft, the main gear and the driven gear are respectively fixed on the two gear shafts, the main gear is meshed with the driven gear, the pump body is provided with two first axial holes that penetrate and cooperate with one end of the gear shaft, and the sleeve is provided with two second axial holes that penetrate and cooperate with the other end of the gear shaft.
[0007] Furthermore, the shaft sleeve is sealingly provided with two sleeves cooperating with the gear shaft, and the pump cover is provided with a stepped hole penetrating therethrough and sealingly cooperating with the outer wall of the sleeve.
[0008] Furthermore, a first sealing ring and a gasket are sleeved on the outer wall of the sleeve, the first sealing ring and the gasket are both matched with the stepped hole, and the first sealing ring is arranged between the gasket and the shaft sleeve.
[0009] Furthermore, a first sealing groove and a second sealing groove are respectively provided at both ends of the cavity, a second sealing ring which is sealed with the pump body is provided in the first sealing groove, and a third sealing ring which is sealed with the pump cover is provided in the second sealing groove.
[0010] Furthermore, a first filter screen is provided on the first oil outlet channel, and a second filter screen is provided on the second oil inlet channel.
[0011] Furthermore, a first positioning pin is provided between the pump body and the cavity, and a second positioning pin is provided between the cavity and the pump cover.
[0012] Furthermore, the pump body, the cavity and the pump cover are fixedly connected by bolts.
[0013] Furthermore, unloading grooves are provided on both sides of the end of the shaft sleeve, the unloading groove on one side is communicated with the first oil inlet channel, and the unloading groove on the other side is communicated with the first oil outlet channel.
[0014] The beneficial effects of the utility model are:
[0015] 1) In the present technology, the high-pressure pump includes a pump body, a cavity and a pump cover, and a through pump cavity is directly provided in the cavity, which reduces the difficulty of processing and facilitates cleaning during later maintenance.
[0016] 2) In the present technology, the first filter screen and the second filter screen are provided to better filter. The first filter screen prevents impurities in the liquid from entering the pump chamber and causing wear on the driving gear and the driven gear. The second filter screen ensures that the discharged liquid is free of impurities.
[0017] 3) In this technology, two unloading grooves are provided on the end of the sleeve, and the end surface pressure of the driving gear and the driven gear is reduced through the unloading grooves to prevent the driving gear and the driven gear from being worn due to the end surface pressure. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a three-dimensional connection structure diagram of the high-pressure pump;
[0019] Figure 2 The cross-sectional connection structure of the high-pressure pump Figure 1 ;
[0020] Figure 3 The cross-sectional connection structure of the high-pressure pump Figure 2 ;
[0021] Figure 4 This is the exploded diagram of the high pressure pump;
[0022] In the figure, 1-pump body, 2-cavity, 3-pump cover, 4-sleeve, 5-pump cavity, 6-first oil inlet channel, 7-first oil outlet channel, 8-second oil inlet channel, 9-second oil outlet channel, 10-main gear, 11-driven gear, 12-gear shaft, 13-first shaft hole, 14-second shaft hole, 15-sleeve, 16-step hole, 17-first sealing ring, 18-gasket, 19-first sealing groove, 20-second sealing groove, 21-second sealing ring, 22-third sealing ring, 23-first filter, 24-second filter, 25-first positioning pin, 26-second positioning pin, 27-bolt, 28-unloading groove. DETAILED DESCRIPTION
[0023] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-Figure 4 , the utility model provides a technical solution:
[0025] A three-body high-pressure pump comprises a pump body 1, a cavity 2, a pump cover 3, a shaft sleeve 4 and a gear assembly. The pump body 1 is sealed and fixedly arranged on one end of the cavity 2, and the pump cover 3 is sealed and fixedly arranged on the other end of the cavity 2. A pump cavity 5 matched with the gear assembly is arranged in the cavity 2. One end of the gear assembly is arranged on the pump body 1, and the other end of the gear assembly is arranged in the shaft sleeve 4. One end of the shaft sleeve 4 is arranged in the pump cavity 5, and the other end of the shaft sleeve 4 is sealed and arranged in the pump cover 3. A first oil inlet channel 6 and a first oil outlet channel 7 are arranged on the cavity 2. A second oil inlet channel 8 and a second oil outlet channel 9 are arranged on the pump body 1. One end of the first oil inlet channel 6 and one end of the first oil outlet channel 7 are both sealed and connected to the pump cavity 5, the other end of the first oil inlet channel 6 is sealed and connected to one end of the second oil inlet channel 8, the other end of the first oil outlet channel 7 is sealed and connected to one end of the second oil outlet channel 9, and the outlet of the first oil inlet channel 6 and the inlet of the first oil outlet channel 7 are respectively arranged on both sides of the gear assembly. A first locating pin 25 is provided between the pump body 1 and the cavity 2, and a second locating pin 26 is provided between the cavity 2 and the pump cover 3. The pump body 1, the cavity 2 and the pump cover 3 are fixedly connected by bolts 27. The pump body 1, the cavity 2 and the pump cover 3 are fixedly connected together by two symmetrically arranged bolts 27, the pump body 1 is fixed to the motor in the prior art through an oil circuit board, the oil circuit board is provided with an inlet and outlet oil circuit that cooperates with the second oil inlet channel 8 and the second oil outlet channel 9, the pump body 1, the cavity 2, the pump cover 3 and the oil circuit board are fixed together by a longer bolt, two first locating pins 25 and two second locating pins 26 are provided respectively, the pump body 1 and the cavity 2 are precisely positioned and matched by the two first locating pins 25, and the cavity 2 and the pump cover 3 are precisely positioned and matched by the two second locating pins 26. Liquid is input into the oil inlet channel on the oil circuit board, and then enters the pump chamber 5 through the second oil inlet channel 8 and the first oil inlet channel 6. The motor drives the gear assembly in the pump chamber 5 to rotate to pressurize the liquid, and then it is discharged through the first oil outlet channel 7, the second oil outlet channel 9 and the oil outlet channel on the oil circuit board in sequence.
[0026] In some embodiments, the gear assembly includes a main gear 10, a driven gear 11 and a gear shaft 12, the main gear 10 and the driven gear 11 are respectively fixed on two gear shafts 12, the main gear 10 is meshed with the driven gear 11, the pump body 1 is provided with two first shaft holes 13 that penetrate and match one end of the gear shaft 12, and the shaft sleeve 4 is provided with two second shaft holes 14 that penetrate and match the other end of the gear shaft 12. Among them, the two gear shafts 12 are arranged parallel to each other, the main gear 10 and the driven gear 11 are respectively fixed on the two gear shafts 12, the gear shaft 12 on the main gear 10 is connected to the motor in the prior art through the coupling in the prior art, the rotation of the main gear 10 drives the driven gear 11 to rotate, and the liquid realizes high-pressure liquid output through the action of the main gear 10 and the driven gear 11.
[0027] In some embodiments, the shaft sleeve 4 is sealed with two sleeves 15 that cooperate with the gear shaft 12, and the pump cover 3 is provided with a stepped hole 16 that penetrates and seals with the outer wall of the sleeve 15. The outer wall of the sleeve 15 is sleeved with a first sealing ring 17 and a gasket 18, both of which cooperate with the stepped hole 16, and the first sealing ring 17 is arranged between the gasket 18 and the shaft sleeve 4. Among them, the first sealing ring 17 is a sealing ring in the prior art, and the two sleeves 13 are arranged to better seal with the stepped hole 16 through the first sealing ring 17. The stepped hole 16 is set as a through hole to add lubricating oil, so that the gear shaft 12 can be better lubricated.
[0028] In some embodiments, a first sealing groove 19 and a second sealing groove 20 are respectively provided at both ends of the cavity 2, a second sealing ring 21 is provided in the first sealing groove 19 to seal with the pump body 1, and a third sealing ring 22 is provided in the second sealing groove 20 to seal with the pump cover 3. The second sealing ring 21 and the third sealing ring 22 are both sealing rings in the prior art, and the inner sides of the second sealing ring 21 and the third sealing ring 22 are respectively provided at both ends of the pump cavity 5, the second sealing ring 21 realizes the sealing between the pump body 1 and the cavity 2, and the third sealing ring 22 realizes the sealing between the cavity 2 and the pump cover 3.
[0029] In some embodiments, a first filter screen 23 is provided on the first oil outlet channel 7, and a second filter screen 24 is provided on the second oil inlet channel 8. The liquid will carry impurities during the flow process. If the impurities directly enter the pump chamber 5, it will cause wear between the main gear 10 and the driven gear 11. After the wear, the working efficiency of the high-pressure pump will decrease. Therefore, the second filter screen 20 is provided to filter the liquid entering the pump chamber 5. Part of the liquid enters between the cavity 2 and the pump cover 3 through the gap between the inner wall of the pump chamber 5 and the outer wall of the shaft sleeve 4. The impurities contained in this part of the liquid can be removed by the first filter screen 23. The first filter screen 23 and the second filter screen 24 are both filters in the prior art.
[0030] In some embodiments, unloading grooves 28 are provided on both sides of the end of the sleeve 4, the unloading groove 28 on one side is communicated with the first oil inlet channel 6, and the unloading groove 28 on the other side is communicated with the first oil outlet channel 7. In the operation of the high-pressure pump, part of the liquid will enter the end faces of the main gear 10 and the driven gear 11, so that the end faces of the main gear 10 and the driven gear 11 are squeezed, and friction occurs between the squeezed main gear 10 and the driven gear 11 and the end face of the pump body 1, which easily leads to the generation of debris, and is also easy to generate noise or even damage after long-term use. The provision of two unloading grooves 28 can effectively prevent the ends of the main gear 10 and the driven gear 11 from being squeezed by liquid, and also prevent the liquid from being discharged through the first shaft hole 13 and the second shaft hole 14.
[0031] In the description of the present invention, it should be understood that the terms "one end", "top", "middle", "the other end", "upper", "one side", "inside", "front", "center", "both ends" 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 invention and simplifying the description, and do not indicate or imply that the device or element referred to 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 invention.
[0032] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation", "hinge" 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 or an electrical connection; 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. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.
[0033] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.
Claims
1. Three-body high-pressure pump, characterized by: The invention comprises a pump body (1), a cavity (2), a pump cover (3), a shaft sleeve (4) and a gear assembly, wherein the pump body (1) is sealed and fixedly arranged on one end of the cavity (2), the pump cover (3) is sealed and fixedly arranged on the other end of the cavity (2), a pump cavity (5) matched with the gear assembly is arranged in the cavity (2), one end of the gear assembly is arranged on the pump body (1), the other end of the gear assembly is arranged in the shaft sleeve (4), one end of the shaft sleeve (4) is arranged in the pump cavity (5), the other end of the shaft sleeve (4) is sealed and arranged in the pump cover (3), and the cavity (2) is provided with a pump cavity (5) matched with the gear assembly. A first oil inlet channel (6) and a first oil outlet channel (7) are provided, and a second oil inlet channel (8) and a second oil outlet channel (9) are provided on the pump body (1); one end of the first oil inlet channel (6) and one end of the first oil outlet channel (7) are both sealedly connected to the pump chamber (5); the other end of the first oil inlet channel (6) is sealedly connected to one end of the second oil inlet channel (8); the other end of the first oil outlet channel (7) is sealedly connected to one end of the second oil outlet channel (9); the outlet of the first oil inlet channel (6) and the inlet of the first oil outlet channel (7) are respectively arranged on both sides of the gear assembly.
2. The three-body high-pressure pump according to claim 1, characterized in that: The gear assembly comprises a main gear (10), a driven gear (11) and a gear shaft (12); the main gear (10) and the driven gear (11) are respectively fixed on the two gear shafts (12); the main gear (10) and the driven gear (11) are meshed with the driven gear (11); the pump body (1) is provided with two first shaft holes (13) penetrating therethrough and cooperating with one end of the gear shaft (12); and the shaft sleeve (4) is provided with two second shaft holes (14) penetrating therethrough and cooperating with the other end of the gear shaft (12).
3. The three-body high-pressure pump according to claim 2, characterized in that: The shaft sleeve (4) is sealed with two sleeves (15) that cooperate with the gear shaft (12), and the pump cover (3) is provided with a stepped hole (16) that penetrates and seals with the outer wall of the sleeve (15).
4. The three-body high-pressure pump according to claim 3, characterized in that: A first sealing ring (17) and a gasket (18) are sleeved on the outer wall of the sleeve (15); the first sealing ring (17) and the gasket (18) are both matched with the stepped hole (16); the first sealing ring (17) is arranged between the gasket (18) and the shaft sleeve (4).
5. The three-body high-pressure pump according to any one of claims 1 to 4, characterized in that: A first sealing groove (19) and a second sealing groove (20) are respectively provided at both ends of the cavity (2); a second sealing ring (21) is provided in the first sealing groove (19) and is sealed with the pump body (1); and a third sealing ring (22) is provided in the second sealing groove (20) and is sealed with the pump cover (3).
6. The three-body high-pressure pump according to any one of claims 1 to 4, characterized in that: The first oil outlet passage (7) is provided with a first filter screen (23), and the second oil inlet passage (8) is provided with a second filter screen (24).
7. The three-body high-pressure pump according to any one of claims 1 to 4, characterized in that: A first positioning pin (25) is provided between the pump body (1) and the cavity (2), and a second positioning pin (26) is provided between the cavity (2) and the pump cover (3).
8. The three-body high-pressure pump according to any one of claims 1 to 4, characterized in that: The pump body (1), the cavity (2) and the pump cover (3) are fixedly connected by bolts (27).
9. The three-body high-pressure pump according to any one of claims 1 to 4, characterized in that: Unloading grooves (28) are provided on both sides of the end of the shaft sleeve (4); the unloading groove (28) on one side is connected to the first oil inlet channel (6), and the unloading groove (28) on the other side is connected to the first oil outlet channel (7).