High-temperature-resistant gear pump

Abstract

The invention relates to the technical field of gear pumps, in particular to a high-temperature-resistant gear pump which comprises a supporting base and a driving motor arranged on the upper end face of the supporting base, a gear pump body is arranged on one side of the driving motor, an inlet and outlet pipe is arranged on the gear pump body, and the inlet and outlet pipe is connected with a water inlet and outlet pipe through a connecting assembly. The gear pump body comprises a shell, a shell cover and a pump gear. According to the invention, the impurity cleaning brush can automatically sweep back and forth in the horizontal direction along with the rotation of the pump gear, impurities among teeth can be continuously cleaned without stopping a machine to disassemble a cover, and the cleaned impurities are immediately taken away by flowing liquid, so that the cost for regularly and manually cleaning and replacing a sealing element is saved by a disassembly-free structure, the stopping time is reduced, and the availability of equipment is improved; and the impurities attached to the meshing gaps of the pump gears are cleaned continuously, so that abrasion caused by the impurities attached to the meshing gaps of the pump gears can be reduced, and the service life of the pump gears can be prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gear pumps, and particularly relates to a high-temperature-resistant gear pump. BACKGROUND

[0002] The high-temperature-resistant gear pump is a gear pump capable of working normally in a high-temperature environment. It is usually used for conveying high-temperature fluid or can still work efficiently and stably under high-temperature working conditions.

[0003] At present, during the conveying process of the commonly used gear pump, solid particles and other impurities are usually mixed in the conveyed liquid. During the conveying process of the liquid mixed with impurities, the impurities in the conveyed liquid are prone to adhere to the gear of the gear pump, which accelerates the wear of the gear of the gear pump, thereby reducing the service life of the gear pump. In addition, the adhesion of the impurities on the gear is a continuous process, and therefore the gear pump needs to be disassembled regularly and the impurities on the gear inside the gear pump need to be cleaned, which increases the downtime of the gear pump and reduces the availability of the gear pump within a specified time.

[0004] Therefore, the application provides the high-temperature-resistant gear pump. SUMMARY

[0005] To solve the above problems, the application aims to provide a high-temperature-resistant gear pump.

[0006] To achieve the above-mentioned purpose, the application provides a high-temperature-resistant gear pump, which comprises a supporting base and a driving motor arranged on the upper end face of the supporting base. One side of the driving motor is provided with a gear pump body. An inlet and outlet pipe is arranged on the gear pump body. The inlet and outlet pipe is connected with an inlet and outlet water pipe through a connecting assembly. The gear pump body comprises a shell, a shell cover and a pump gear. The shell is arranged on the supporting base. The shell cover is arranged on the shell. The pump gear is rotatably connected to the inner side of the shell. The pump gear is provided with two gears. The two gears are engaged with each other. A gear cleaning assembly is arranged on the inner side of the shell.

[0007] Preferably, the gear cleaning assembly comprises a fixed block, a limiting port, a moving rod, a limiting plug, an impurity cleaning brush, a push rod, a disc, a first sinking groove, a second sinking groove and an inclined chamfer. Two groups of fixed blocks are arranged on the inner side of the shell and the side wall surface opposite to the shell of the shell cover. The positions of the two groups of fixed blocks correspond to each other. Each group of fixed blocks is provided with two fixed blocks. The two fixed blocks are located on one side of the two gears.

[0008] Preferably, the limiting hole is arranged on the fixed block, the moving rod is arranged inside the shell, the moving rod is provided with two, the two moving rods are located between the two groups of fixed blocks, the limiting plug rod is arranged at the two ends of the moving rod, the limiting plug rods at the two ends of the moving rod are respectively inserted into the limiting holes on the two sides of the fixed block, the limiting hole is polygonal in cross section, and the limiting plug rod inserted into the inside of the limiting hole is matched with the limiting hole in shape and size.

[0009] Preferably, the impurity cleaning brush is located on one side of the moving rod, and the impurity cleaning brush is connected to the moving rod through the mounting plate, one end of the impurity cleaning brush away from the moving rod abuts against the pump gear, and the push rods are arranged on the two sides of the impurity cleaning brush and connected to the moving rod.

[0010] Preferably, the disc is arranged at the two ends of the pump gear, the discs at the two ends of the pump gear are rotationally connected to the inside bottom end of the shell and the shell cover respectively, the output end of the driving motor is connected to one pump gear, the first sinking groove is arranged on the side wall opposite to the pump gear, and the first sinking groove is annular.

[0011] Preferably, the second sinking groove is arranged at the inside bottom end of the first sinking groove, the second sinking groove is semicircular, the inclined chamfer is arranged at the corner of the two ends of the second sinking groove, and the inclined chamfer is connected to the first sinking groove and the second sinking groove, and one end of the push rod away from the moving rod abuts against the disc.

[0012] Preferably, the connecting assembly comprises a first connecting ring, a second connecting ring, an arc-shaped through hole, a connecting plate, a groove, a plug hole, a reset spring, a limiting plug and a round corner, the first connecting ring is arranged on the side wall opposite to the inlet and outlet pipe of the water inlet and outlet pipe, and the second connecting ring is arranged on the side wall opposite to the inlet and outlet pipe of the inlet and outlet pipe.

[0013] Preferably, the arc-shaped through hole is arranged on the second connecting ring, the arc-shaped through hole is arranged in a circumferential array and provided with a plurality of arc-shaped through holes at equal intervals, the connecting plate is arranged on the side wall opposite to the first connecting ring and the second connecting ring, and the connecting plate is L-shaped.

[0014] Preferably, the cross-sectional shape and size of the connecting plate are adapted to the arc-shaped through hole, the plurality of connecting plates respectively pass through the plurality of arc-shaped through holes on the second connecting ring, and the connecting plate inside the arc-shaped through hole is clamped on the second connecting ring, the groove is arranged on the second connecting ring, the groove is located between two adjacent arc-shaped through holes, the socket is arranged on the connecting plate and faces the second connecting ring, the reset spring is arranged inside the bottom end of the socket, one end of the limiting plug is inserted into the inside of the socket, the end of the reset spring inside the socket is connected with the limiting plug inserted into the inside of the socket, the other end of the limiting plug is inserted into the groove on the second connecting ring, and the two fillets on one end of the limiting plug are arranged at two corner angles and are located inside the groove.

[0015] The cross section of the support base is in the shape of a n, a plurality of reinforcing plates are arranged at equal intervals inside the support base, the lower end surface of the driving motor is provided with a support frame, the support frame is connected to the upper end surface of the support base through bolts, the lower end surface of the gear pump body is provided with a supporting block, and the supporting block is connected to the upper end surface of the support base.

[0016] The high-temperature-resistant gear pump can bring the following beneficial effects: The cam-pusher mechanism formed by the first sinking groove, the second sinking groove and the inclined chamfer on the disc realizes automatic reciprocating brushing of the impurity cleaning brush in the horizontal direction with the rotation of the pump gear, and the interdental impurities can be continuously removed without stopping and disassembling, the cleaned impurities are immediately taken away by the flowing liquid, the disassembly-free structure saves the cost of regular manual cleaning and replacement of sealing elements, reduces downtime, and improves equipment availability; continuous cleaning can clean the impurities attached to the gap of the pump gear, which can reduce the wear caused by the impurities attached to the gap of the pump gear, thereby prolonging the service life of the pump gear. The first connecting ring and the second connecting ring adopt a three-step structure of "insertion-rotation-locking": the L-shaped connecting plate can be clamped after being lightly rotated after passing through the arc-shaped through hole; the limiting plug driven by the reset spring automatically pops into the groove to complete the locking, and the whole process does not need bolts or wrenches, and a single person can complete the assembly and disassembly within a few seconds. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application. In the drawings:

[0018] In the drawings: Figure 1 is a first perspective view of the overall structure of the present application; Figure 2 is a second perspective view of the overall structure of the present application; Figure 3 is a first perspective view of the inlet and outlet pipe and the inlet and outlet water pipe of the present application; Figure 4 is a second perspective view of the inlet and outlet pipe and the inlet and outlet water pipe of the present application; Figure 5 is a sectional view of the connecting plate of the present application; Figure 6 is a first perspective view of the gear pump body of the present application; Figure 5 is an enlarged view of A in the above figure; Figure 7 is a schematic view of the overall structure inside the housing of the present application; Figure 8 is a first perspective view of the gear pump body of the present application; Figure 9 is a second perspective view of the gear pump body of the present application; Figure 10 is a sectional view of the gear pump body of the present application; Figure 11 is a perspective view of the disc of the present application.

[0019] In the drawings: 1, support base; 2, drive motor; 3, gear pump body; 31, housing; 32, housing cover; 33, pump gear; 5, inlet and outlet pipe; 6, inlet and outlet water pipe; 7, connecting assembly; 71, first connecting ring; 72, second connecting ring; 73, arc-shaped through opening; 74, connecting plate; 75, groove; 76, socket; 77, return spring; 78, limiting plug; 79, rounded corner; 81, fixed block; 82, limiting opening; 83, moving rod; 84, limiting plug rod; 85, impurity cleaning brush; 86, push rod; 87, disc; 88, first sunken groove; 89, second sunken groove; 810, inclined chamfer. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0021] In the description of the application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0022] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0023] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present application, the description referring to the terms "one scheme", "some schemes", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more schemes or examples in a suitable manner.

[0025] As Figures 1-11As shown, the embodiment of the present application provides a high-temperature-resistant gear pump, which comprises a supporting base 1 and a driving motor 2 arranged on the upper end surface of the supporting base 1, one side of the driving motor 2 is provided with a gear pump body 3, the gear pump body 3 is provided with an inlet and outlet pipe 5, the inlet and outlet pipe 5 is connected with an inlet and outlet water pipe 6 through a connecting assembly 7, the gear pump body 3 comprises a shell 31, a shell cover 32 and a pump gear 33, the shell 31 is arranged on the supporting base 1, the shell cover 32 is arranged on the shell 31, and the pump gear 33 is rotatably connected to the inner side of the shell 31, the pump gear 33 is provided with two, the two pump gears 33 are engaged, and the inner side of the shell 31 is provided with a gear cleaning assembly.

[0026] It should be noted that the gear cleaning assembly is located between the pump gear 33 and the inlet and outlet pipe 5 for discharging liquid from the inner side of the shell 31.

[0027] In the embodiment, the inner side of the shell 31 is provided with two pump gears 33, and the number of pump gears 33 in the shell 31 is not limited to the present application, and a plurality of pump gears 33 can be arranged in the shell 31.

[0028] The gear cleaning assembly comprises a fixed block 81, a limiting hole 82, a moving rod 83, a limiting plug 84, a impurity cleaning brush 85, a push rod 86, a disc 87, a first sinking groove 88, a second sinking groove 89 and an inclined chamfer 810, the fixed block 81 is provided with two groups, the two groups of fixed blocks 81 are respectively arranged on the inner bottom end of the shell 31 and the side wall surface of the shell cover 32 opposite to the shell 31, the positions of the two groups of fixed blocks 81 correspond to each other, each group of fixed blocks 81 is provided with two, and the two fixed blocks 81 are respectively located on one side of the two pump gears 33.

[0029] The limiting hole 82 is formed in the fixed block 81, the moving rod 83 is arranged on the inner side of the shell 31, the moving rod 83 is provided with two, the two moving rods 83 are located between the two groups of fixed blocks 81, the limiting plug 84 is arranged at both ends of the moving rod 83, the limiting plugs 84 at both ends of the moving rod 83 are respectively inserted into the limiting holes 82 on the fixed blocks 81 on both sides of the moving rod 83, the limiting hole 82 is polygonal in cross section, and the limiting plug 84 inserted into the inner side of the limiting hole 82 is matched with the limiting hole 82 in shape and size.

[0030] The impurity cleaning brush 85 is located on one side of the moving rod 83, and the impurity cleaning brush 85 is connected to the moving rod 83 through a mounting plate, one end of the impurity cleaning brush 85 away from the moving rod 83 abuts against the pump gear 33, the push rod 86 is arranged on both sides of the impurity cleaning brush 85, and the push rods 86 on both sides of the impurity cleaning brush 85 are connected with the moving rod 83.

[0031] The brush of the impurity cleaning brush 85 is made of nylon material, the brush of nylon material has high wear resistance and elasticity, and has good water flow impact resistance. The nylon itself has strong corrosion resistance and is not easy to deform due to water flow or humid environment.

[0032] The disc 87 is arranged at two ends of the pump gear 33, and the disc 87 at the two ends of the pump gear 33 is rotationally connected to the inner bottom end of the shell 31 and the shell cover 32 respectively, the output end of the driving motor 2 is in butt joint with one pump gear 33, the first sunken groove 88 is arranged on the side wall opposite to the pump gear 33 of the disc 87, and the first sunken groove 88 is in a circular ring shape.

[0033] The second sunken groove 89 is arranged at the inner bottom end of the first sunken groove 88, the second sunken groove 89 is in a semicircular arc shape, the inclined chamfer 810 is arranged at the corner of the two ends of the second sunken groove 89, and the inclined chamfer 810 is in communication with the first sunken groove 88 and the second sunken groove 89, and the end of the push rod 86 away from the moving rod 83 is abutted against the disc 87.

[0034] The second sunken groove 89 arranged on the disc 87 at the two ends of the pump gear 33 is staggered.

[0035] It should be noted that the push rod 86 abutted against the disc 87 is located at the inner bottom end of the first sunken groove 88 on the disc 87, and the push rod 86 is abutted against the inner bottom end of the first sunken groove 88, the push rod 86 abutted against the inner bottom end of the first sunken groove 88 will be switched between the first sunken groove 88 and the second sunken groove 89 arranged at the inner bottom end of the first sunken groove 88 with the rotation of the disc 87.

[0036] In this embodiment, first start the drive motor 2, drive motor 2 with the pump gear 33 rotating butt joint, pump gear 33 with the meshing of another pump gear 33 rotating, two pump gear 33 meshing rotation will liquid through a water inlet and outlet pipe 6 into the housing 31 inside, then with the two pump gear 33 continue to rotate, the liquid inside the housing 31 from another water inlet and outlet pipe 6 discharge; pump gear 33 in the process of rotating with its both ends of the disc 87 rotating, the moving rod 83 one end of the push rod 86 is pressed on the pump gear 33 one end of the disc 87 on the first inside bottom of the sink groove 88, the moving rod 83 the other end of the push rod 86 is pressed on the pump gear 33 the other end of the disc 87 on the first inside bottom of the sink groove 88 second sink groove 89, at this time, the impurity cleaning brush 85 is located on one side of the pump gear 33, with the rotation of the disc 87, the push rod 86 pressed on the first inside bottom of the sink groove 88 will be switched to the second inside bottom of the sink groove 89 on the first inside bottom of the sink groove 88, at the same time, the push rod 86 pressed on the second inside bottom of the sink groove 89 will be switched to the first inside bottom of the sink groove 88 connected with the second inside bottom of the sink groove 89, with the position switching of the two push rods 86 on the moving rod 83, the impurity cleaning brush 85 moves in the horizontal direction, according to the above method, the impurity cleaning brush 85 can move back and forth in the horizontal direction, the back and forth movement of the impurity cleaning brush 85 can clean the gap impurities on the pump gear 33, the impurities cleaned on the pump gear 33 will be taken out of the housing 31 with the flow of water inside the housing 31.

[0037] The cam-push rod 86 mechanism formed by the first sink groove 88, the second sink groove 89 and the inclined chamfer 810 on the disc 87 realizes the automatic back and forth sweeping of the impurity cleaning brush 85 in the horizontal direction with the rotation of the pump gear 33, without stopping the machine to remove the cover, the interdental impurities can be continuously cleaned, the cleaned impurities are immediately taken away by the flowing liquid, so that the cost of periodic manual cleaning and replacement of sealing elements is saved, the downtime is reduced, and the equipment availability is improved; continuous cleaning can clean the impurities attached to the gap between the pump gears 33, which can reduce the wear caused by the impurities attached to the gap between the pump gears 33, thereby prolonging the service life of the pump gear 33. The modular fixing block 81-limiting hole 82-limiting plug 84 design can quickly plug in and replace the brush body, further reducing the maintenance time. The cleaning assembly is independent of the number of pump gears 33, which is suitable for double gear scheme and can be directly expanded to multi gear pump, keeping the technical consistency.

[0038] The connecting assembly 7 comprises a first connecting ring 71, a second connecting ring 72, arc-shaped through holes 73, connecting plates 74, grooves 75, sockets 76, return springs 77, limiting plugs 78 and rounded corners 79. The first connecting ring 71 is arranged on the side wall surface of the water inlet and outlet pipe 6 opposite to the water inlet and outlet pipe 5. The second connecting ring 72 is arranged on the side wall surface of the water inlet and outlet pipe 5 opposite to the water inlet and outlet pipe 6.

[0039] The arc-shaped through holes 73 are arranged on the second connecting ring 72. The arc-shaped through holes 73 are arranged in a circumferential array and are equally spaced. The connecting plates 74 are arranged on the side wall surface of the first connecting ring 71 opposite to the second connecting ring 72. The connecting plates 74 are in an L shape.

[0040] The cross-sectional shape and size of the connecting plates 74 are adapted to the arc-shaped through holes 73. The connecting plates 74 pass through the arc-shaped through holes 73 on the second connecting ring 72. The connecting plates 74 inside the arc-shaped through holes 73 are clamped on the second connecting ring 72. The grooves 75 are arranged on the second connecting ring 72. The grooves 75 are located between adjacent arc-shaped through holes 73. The sockets 76 are arranged on the connecting plates 74. The sockets 76 are towards the second connecting ring 72. The return springs 77 are arranged inside the bottom end of the sockets 76. One end of the limiting plugs 78 is inserted into the sockets 76. One end of the return springs 77 inside the sockets 76 is connected to the limiting plugs 78 inserted into the sockets 76. The other end of the limiting plugs 78 is inserted into the grooves 75 on the second connecting ring 72. The rounded corners 79 are arranged at two corners of one end of the limiting plugs 78. The two rounded corners 79 on the limiting plugs 78 are inside the grooves 75.

[0041] In this embodiment, before use, the first connecting ring 71 at one end of the water inlet and outlet pipe 6 is pressed against the second connecting ring 72 on the shell 31, and the plurality of connecting plates 74 on the first connecting ring 71 pass through the plurality of arc-shaped through openings 73 on the second connecting ring 72 in turn, then the first connecting ring 71 provided at one end of the water inlet and outlet pipe 6 is rotated by the water inlet and outlet pipe 6, the first connecting ring 71 drives the connecting plates 74 provided thereon, until the connecting plates 74 are clamped on the arc-shaped through openings 73 through which the connecting plates 74 pass; during clamping of the connecting plates 74 on the arc-shaped through openings 73, when the one end of the limiting plug 78 on the connecting plate 74 corresponds to the position of the groove 75 on the first connecting ring 71, the limiting plug 78 is inserted into the inside of the groove 75 on the second connecting ring 72 under the elastic force of the reset spring 77 inside the plug-in opening 76 where the limiting plug 78 is located, at this time, the connection between the water inlet and outlet pipe 6 and the inlet and outlet pipe 5 can be completed, then the driving motor 2 is started to extract the target liquid, when it is needed to separate the water inlet and outlet pipe 6 from the inlet and outlet pipe 5, the first connecting ring 71 on the water inlet and outlet pipe 6 is reversely rotated by force, during the forced rotation of the first connecting ring 71, the limiting plug 78 on the connecting plate 74 on the first connecting ring 71 is contracted downward to the bottom end inside the plug-in opening 76 where the limiting plug 78 is located through the round corner 79, the limiting plug 78 that is contracted inside the plug-in opening 76 presses the reset spring 77 inside the plug-in opening 76, when the limiting plug 78 is completely contracted inside the plug-in opening 76 where the limiting plug 78 is located, the first connecting ring 71 is further rotated by the water inlet and outlet pipe 6, when the connecting plate 74 clamped on the second connecting ring 72 is separated from the second connecting ring 72, the first connecting ring 71 at one end of the water inlet and outlet pipe 6 can be pulled off from the second connecting ring 72 on the inlet and outlet pipe 5.

[0042] The first connecting ring 71 and the second connecting ring 72 adopt a “plug-rotation-lock” three-step structure: the L-shaped connecting plate 74 can be clamped after being lightly rotated after passing through the arc-shaped through opening 73; the limiting plug 78 driven by the reset spring 77 is automatically popped into the groove 75 to complete the locking, without bolts or wrenches throughout the process, a single person can complete the assembly and disassembly within a few seconds. The arc-shaped through opening 73 and the L-shaped connecting plate 74 form axial tension and circumferential limiting double constraints, cooperating with the reset spring 77 to continuously exert locking force, which can effectively resist mechanical vibration and water hammer impact during pump operation, and prevent loosening and leakage. The groove 75-limiting plug 78-round corner 79 design can realize “overload slip” protection during overload or maintenance.

[0043] The cross section of the support base 1 is in the shape of a n, multiple reinforcing plates are arranged equidistantly on the inner side of the support base 1, the lower end surface of the driving motor 2 is provided with a support frame, the support frame is connected to the upper end surface of the support base 1 through bolts, the lower end surface of the gear pump body 3 is provided with a supporting block, the supporting block is connected to the upper end surface of the support base 1, a mounting flange is arranged between the support base 1 and the gear pump body 3, the two ends of the mounting flange are connected with the support base 1 and the gear pump body 3, and the gear pump body 3 is made of stainless steel.

[0044] The gear pump body 3 made of stainless steel has very high heat resistance and corrosion resistance, is suitable for high-temperature (can withstand up to 500°C or above) environment, can maintain good mechanical properties at a higher temperature, and has good corrosion resistance to various chemical media.

[0045] Working principle: the first connecting ring 71 of one end of the inlet and outlet pipe 6 is pressed against the second connecting ring 72 on the shell 31, and the plurality of connecting plates 74 on the first connecting ring 71 pass through the plurality of arc-shaped through openings 73 on the second connecting ring 72 in turn, then the first connecting ring 71 provided at one end of the inlet and outlet pipe 6 is rotated through the inlet and outlet pipe 6, the first connecting ring 71 drives the connecting plate 74 provided thereon, until the connecting plate 74 is clamped on the arc-shaped through opening 73 through which the connecting plate 74 passes; during the process of clamping the connecting plate 74 on the arc-shaped through opening 73, when the one end of the limiting plug 78 on the connecting plate 74 corresponds to the position of the groove 75 on the first connecting ring 71, the limiting plug 78 is inserted into the groove 75 on the second connecting ring 72 under the elastic force of the reset spring 77 inside the plug-in opening 76 where the limiting plug 78 is located, at this time, the connection between the inlet and outlet pipe 6 and the inlet and outlet pipe 5 can be completed, then the driving motor 2 is started to extract the target liquid, when it is needed to separate the inlet and outlet pipe 6 and the inlet and outlet pipe 5, the first connecting ring 71 on the inlet and outlet pipe 6 is reversely rotated by force, during the process of forcibly rotating the first connecting ring 71, the limiting plug 78 on the connecting plate 74 on the first connecting ring 71 is contracted downward to the bottom end inside the plug-in opening 76 where the limiting plug 78 is located through the round corner 79, the limiting plug 78 that is contracted inside the plug-in opening 76 extrudes the reset spring 77 inside the plug-in opening 76, when the limiting plug 78 is completely contracted inside the plug-in opening 76 where the limiting plug 78 is located, the first connecting ring 71 is further rotated through the inlet and outlet pipe 6, when the connecting plate 74 clamped on the second connecting ring 72 is separated from the second connecting ring 72, the first connecting ring 71 of one end of the inlet and outlet pipe 6 is pulled off from the second connecting ring 72 on the inlet and outlet pipe 5; when the connection between the inlet and outlet pipe 6 and the inlet and outlet pipe 5 is completed, the driving motor 2 is started, the driving motor 2 drives the pump gear 33 that is connected thereto to rotate, the pump gear 33 drives another pump gear 33 that is engaged therewith to rotate, the two pump gears 33 rotate to suck the liquid into the inside of the shell 31 through one inlet and outlet pipe 6, then the liquid in the inside of the shell 31 is discharged from another inlet and outlet pipe 6 with the continuous rotation of the two pump gears 33.The pump gear 33 drives the disc 87 at both ends to rotate in the process of rotation, at this time, the push rod 86 at one end of the moving rod 83 abuts against the first sunken groove 88 on the inner side bottom end of the disc 87 at one end of the pump gear 33, and the push rod 86 at the other end of the moving rod 83 abuts against the second sunken groove 89 on the inner side bottom end of the disc 87 at the other end of the pump gear 33, at this time, the impurity cleaning brush 85 abutting against the pump gear 33 is located on one side of the pump gear 33, with the rotation of the disc 87, the push rod 86 abutting against the first sunken groove 88 on the inner side bottom end of the disc 87 will switch to the second sunken groove 89 on the inner side bottom end of the first sunken groove 88 along the inclined chamfer 810, at the same time, the push rod 86 abutting against the second sunken groove 89 on the inner side bottom end of the disc 87 will switch to the first sunken groove 88 on the inner side bottom end connected with the second sunken groove 89 along the inclined chamfer 810, with the position switching of the two push rods 86 on the moving rod 83, the impurity cleaning brush 85 is driven to move in the horizontal direction, according to the above mode, the impurity cleaning brush 85 can move back and forth in the horizontal direction, the back and forth movement of the impurity cleaning brush 85 can clean the gap impurities on the pump gear 33, and the impurities cleaned on the pump gear 33 will be taken out of the shell 31 along with the water flow flowing in the inner side of the shell 31.

[0046] Each of the embodiments in the specification is described in a progressive manner, and the same and similar parts between the embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments. Especially, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the related parts can be referred to the part of the method embodiment.

[0047] The above only describes the embodiments of the present application and is not used to limit the present application. The present application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A high temperature resistant gear pump comprising a supporting base (1) and a driving motor (2) arranged on the upper end surface of the supporting base (1), characterized in that, The side of the driving motor (2) is provided with a gear pump body (3), the gear pump body (3) is provided with an inlet and outlet pipe (5), the inlet and outlet pipe (5) is connected with an inlet and outlet pipe (6) through a connecting assembly (7), the gear pump body (3) comprises a shell (31), a shell cover (32) and a pump gear (33), the shell (31) is arranged on the support base (1), the shell cover (32) is arranged on the shell (31), the pump gear (33) is rotatably connected to the inner side of the shell (31), the pump gear (33) is provided with two, the two pump gears (33) are engaged, and the inner side of the shell (31) is provided with a gear cleaning assembly.

2. A high temperature resistant gear pump as claimed in claim 1, wherein, The gear cleaning assembly comprises a fixed block (81), a limiting hole (82), a moving rod (83), a limiting plug (84), a impurity cleaning brush (85), a push rod (86), a disc (87), a first sinking groove (88), a second sinking groove (89) and an inclined chamfer (810), the fixed block (81) is provided with two groups, the two groups of fixed blocks (81) are respectively arranged on the inner side bottom end of the shell (31), the side wall surface opposite to the shell cover (32) of the shell (31), and the positions of the two groups of fixed blocks (81) correspond to each other, and each group of fixed blocks (81) is provided with two, and the two fixed blocks (81) are located on the side of the two pump gears (33).

3. A high temperature resistant gear pump as claimed in claim 2, wherein, The limiting hole (82) is opened on the fixed block (81), the moving rod (83) is arranged on the inner side of the shell (31), the moving rod (83) is provided with two, the two moving rods (83) are located between the two groups of fixed blocks (81), the limiting plug (84) is arranged at the two ends of the moving rod (83), the limiting plugs (84) at the two ends of the moving rod (83) are respectively inserted into the limiting holes (82) on the two sides of the fixed block (81), and the limiting hole (82) is polygonal in cross section, and the shape and size of the limiting plug (84) inserted into the inner side of the limiting hole (82) are matched with the limiting hole (82).

4. A high temperature resistant gear pump as claimed in claim 2, wherein, The impurity cleaning brush (85) is located on the side of the moving rod (83), and the impurity cleaning brush (85) is connected to the moving rod (83) through the mounting plate, one end of the impurity cleaning brush (85) away from the moving rod (83) abuts against the pump gear (33), and the push rod (86) is arranged on the two sides of the impurity cleaning brush (85). The push rod (86) on the two sides of the impurity cleaning brush (85) is connected with the moving rod (83).

5. A high temperature resistant gear pump as claimed in claim 2, wherein, The disc (87) is arranged at the two ends of the pump gear (33), the discs (87) at the two ends of the pump gear (33) are rotatably connected to the inner side bottom end of the shell (31) and the shell cover (32) respectively, the output end of the driving motor (2) is connected with one pump gear (33), the first sinking groove (88) is opened on the side wall surface opposite to the pump gear (33) of the disc (87), and the first sinking groove (88) is annular.

6. A high temperature resistant gear pump as claimed in claim 2, wherein, The second sinking groove (89) is arranged at the bottom end of the first sinking groove (88), the second sinking groove (89) is semicircular, the inclined chamfer (810) is arranged at the corner of the two ends of the second sinking groove (89), and the inclined chamfer (810) is connected with the first sinking groove (88) and the second sinking groove (89), and the end of the push rod (86) away from the moving rod (83) is pressed on the disc (87).

7. A high temperature resistant gear pump as claimed in claim 1, wherein, The connecting assembly (7) comprises a first connecting ring (71), a second connecting ring (72), an arc-shaped opening (73), a connecting plate (74), a groove (75), a socket (76), a reset spring (77), a limiting plug (78) and a round corner (79), the first connecting ring (71) is arranged on the side wall opposite to the inlet and outlet pipe (5) of the water inlet and outlet pipe (6), and the second connecting ring (72) is arranged on the side wall opposite to the water inlet and outlet pipe (6) of the inlet and outlet pipe (5).

8. A high temperature resistant gear pump as claimed in claim 7, wherein, The arc-shaped opening (73) is arranged on the second connecting ring (72), the arc-shaped opening (73) is arranged in a circular array and has a plurality of arc-shaped openings (73) arranged at equal intervals, the connecting plate (74) is arranged on the side wall opposite to the first connecting ring (71) and the second connecting ring (72), and the connecting plate (74) is L-shaped.

9. A high temperature resistant gear pump as claimed in claim 7, wherein, The cross-sectional shape and size of the connecting plate (74) are matched with the arc-shaped opening (73), a plurality of connecting plates (74) pass through the plurality of arc-shaped openings (73) on the second connecting ring (72), and the connecting plate (74) inside the arc-shaped opening (73) is clamped on the second connecting ring (72), the groove (75) is arranged on the second connecting ring (72), the groove (75) is located between the two adjacent arc-shaped openings (73), the socket (76) is arranged on the connecting plate (74), the socket (76) faces the second connecting ring (72), the reset spring (77) is arranged at the bottom end inside the socket (76), one end of the limiting plug (78) is inserted into the socket (76), one end of the reset spring (77) inside the socket (76) is connected with the limiting plug (78) inserted into the socket (76), the other end of the limiting plug (78) is inserted into the groove (75) on the second connecting ring (72), and the round corners (79) are arranged at the two corners of one end of the limiting plug (78), and the two round corners (79) on the limiting plug (78) are located inside the groove (75).

10. A high temperature resistant gear pump as claimed in claim 1, wherein, The cross section of the support base (1) is V-shaped, a plurality of reinforcing plates are arranged at equal intervals inside the support base (1), the lower end surface of the driving motor (2) is provided with a support frame, the support frame is connected to the upper end surface of the support base (1) through bolts, the lower end surface of the gear pump body (3) is provided with a supporting block, the supporting block is connected to the upper end surface of the support base (1), a mounting flange is arranged between the support base (1) and the gear pump body (3), the two ends of the mounting flange are connected with the support base (1) and the gear pump body (3), and the gear pump body (3) is made of stainless steel.

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