CN112727750B - Gear pump and preparation process thereof - Google Patents

Abstract

The invention discloses a gear pump and a preparation process thereof, and the technical scheme is as follows: including the pump body, pump body both sides are provided with preceding pump cover and back pump cover respectively, have all seted up the annular caulking groove on the pump body both sides wall, all are provided with on preceding pump cover and the back pump cover to be used for the card to go into the annular abaculus of annular caulking groove, and a plurality of slots have all been seted up to the outer wall both sides of the pump body, and the inside interference fit of slot has ball bearing, sets up the logical groove that is linked together with the annular caulking groove on the diapire in the slot, and ball bearing's inner circle is inside to be provided with the rotation piece. The invention has the following beneficial effects: owing to be provided with and rotate the piece for when the screw rod rotates, can drive the bayonet lock and be reciprocating motion along the length direction of screw rod, thereby make the bayonet lock can move and finally inside the card goes into the draw-in groove towards the direction of draw-in groove on the annular abaculus outer wall gradually, spacing through the bayonet lock to the annular abaculus, make the annular abaculus can't break away from the pump body, connect convenient operation swift.

Description

Gear pump and preparation process thereof

Technical Field

The invention relates to the technical field of gear pumps, in particular to a gear pump and a preparation process thereof.

Background

The gear pump is a rotary pump which conveys liquid or pressurizes the liquid by means of the change and movement of the working volume formed between a pump cylinder and a meshing gear, and two closed spaces are formed by two gears and a shell, wherein the shell comprises a pump body, and a front pump cover and a rear pump cover which are arranged at two ends of the pump body.

When the gear pump works, the two gears start to rotate, the space volume of the gear disengagement side is changed from small to large to form vacuum, liquid is sucked, the space volume of the gear engagement side is changed from large to small to squeeze the liquid into the pipeline, the suction cavity and the discharge cavity are separated by the meshing line of the two gears, and the pressure of the discharge port of the gear pump is completely determined by the resistance of the pump outlet.

Among the prior art, preceding pump cover and back pump cover adopt a plurality of hexagon socket head cap bolts to install usually at the casing both ends, because the assembling process of present bolt is gone on for the manual work usually, the feed volume of bolt is also not good assurance when the troublesome poeration, feeds and leads to the bolt to slide the silk deeply easily for the bolt loses the wireless connection effect, feeds and then can make the bolt not hard up easily shallow, influences the sealed effect of preceding pump cover and back pump cover to the pump body.

Therefore, a new solution is needed to solve this problem.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a gear pump convenient to assemble and a preparation process thereof.

The technical purpose of the invention is realized by the following technical scheme: a gear pump comprises a pump body, wherein a front pump cover and a rear pump cover are respectively arranged on two sides of the pump body, annular caulking grooves are respectively arranged on two side walls of the pump body, the front pump cover and the rear pump cover are both provided with annular embedded blocks which are clamped into the annular embedded grooves, both sides of the outer wall of the pump body are both provided with a plurality of slots, the inside of the slot is in interference fit with a ball bearing, the bottom wall in the slot is provided with a through groove communicated with the annular caulking groove, a rotating part is arranged in the inner ring of the ball bearing, the rotating part comprises an optical axis which is connected to the inner part of the inner ring of the ball bearing in a sliding way, one end of the optical axis facing the through groove is provided with a screw rod, the other end is provided with a knob, the knob is rotatably connected inside the slot, threaded connection has the bayonet lock on the screw rod periphery wall, the length direction sliding connection that the bayonet lock led to the groove along logical groove is inside logical, offer the draw-in groove that is used for bayonet lock bottom card to go into on the annular abaculus outer wall.

Through adopting above-mentioned technical scheme, owing to be provided with the rotation piece, when preceding pump cover and back pump cover assemble, go into the annular caulking groove of the pump body both sides with the annular abaculus card on preceding pump cover and the back pump cover, rotate the knob afterwards, make the screw rod rotate thereupon, because bayonet lock threaded connection just can only slide along the length direction who leads to the groove on the screw rod, thereby make when the screw rod rotates, can drive the bayonet lock and be reciprocating motion along the length direction of screw rod, thereby make the bayonet lock move and finally inside the bayonet lock is gone into to the direction of draw-in groove on the annular abaculus outer wall gradually, it is spacing to the annular abaculus to pass through the bayonet lock, make the annular abaculus can't break away from the pump body, connect convenient operation and fast.

The invention is further configured to: the spout has all been seted up along length direction to the internal perisporium both sides that lead to the groove, the bayonet lock both sides all are provided with the slider that is used for the card to go into the spout.

Through adopting above-mentioned technical scheme, because logical inslot perisporium both sides have all been seted up the spout, the bayonet lock both sides are provided with the slider, slide in the spout behind the spout through the slider card income, have realized the bayonet lock at the sliding connection who leads to inslot portion to spacing through the spout to the slider, make the bayonet lock can only slide along the length direction of spout, and the slip process is more stable smooth and easy.

The invention is further configured to: a plurality of positioning pins are arranged on the bottom wall in the annular embedding groove, and a plurality of positioning grooves used for clamping the positioning pins are formed in the outer wall of the annular embedding block.

Through adopting above-mentioned technical scheme, because be provided with the locating pin on the diapire in the annular abaculus, the constant head tank has been seted up on the annular abaculus, goes into the in-process of annular abaculus card, and in the constant head tank was gone into to the locating pin card thereupon, through the location effect of locating pin to the constant head tank for the logical groove of alignment that the draw-in groove can be accurate, and spacing through the locating pin to the annular abaculus, make the annular abaculus difficult emergence rock, connect more stably.

The invention is further configured to: the knob periphery wall is provided with the semicircular annular lug of transversal personally submitting along the circumferencial direction, set up the annular groove that is used for annular lug card to go into on the internal perisporium of slot.

Through adopting above-mentioned technical scheme, because be provided with annular lug on the knob periphery wall, the annular groove has been seted up on the internal perisporium of slot, through going into annular groove with annular lug card for annular lug can be at the annular groove internal rotation, thereby realized the rotation of knob in the slot and connected, and spacing through annular groove to annular lug, make the knob can only rotate in the slot, unable upper and lower slip, thereby make the rotation process of knob more stable.

The invention is further configured to: be provided with the spline on ball bearing's the inner circle internal perisporium, offer the keyway that is used for the spline card to go into along length direction on the optical axis periphery wall.

Through adopting above-mentioned technical scheme, because the ball bearing inner race is provided with the spline, seted up the keyway on the optical axis periphery wall, spacing through the keyway to the spline for the optical axis can link to each other with ball bearing, and realized the optical axis at the inside sliding connection of ball bearing, and connect convenient operation swift.

The invention is further configured to: offer the mounting groove that is used for optical axis top card to go into on the knob bottom surface, the fixed slot has all been seted up to mounting groove internal perisporium both sides, optical axis top periphery wall both sides all are provided with the fixed block that is used for the card to go into the fixed slot.

Through adopting above-mentioned technical scheme, because the mounting groove has been seted up on the knob bottom surface, when linking to each other knob and optical axis, aim at the mounting groove and the card of knob with the optical axis top and go into, when the mounting groove is gone into to optical axis top card, the fixed block card of optical axis both sides is gone into the fixed slot of mounting groove both sides thereupon, spacing to the fixed block through the fixed slot for the knob rotates and can drive the optical axis and rotate, and make the knob difficult extract from the optical axis top, connect more stably.

The invention is further configured to: the pump body, the front pump cover and the rear pump cover are all made of stainless steel materials.

Through adopting above-mentioned technical scheme, because the pump body, preceding pump cover and back pump cover are made by stainless steel material, stainless steel material has better intensity and corrosion resisting property for the pump body, preceding pump cover and back pump cover intensity are better, and difficult damage, and corrosion resisting property is outstanding, and be difficult for rustting, have prolonged the life of gear pump greatly.

A process for preparing a gear pump, which is used for preparing the gear pump as claimed in claims 1 to 7, comprising the following steps:

step 1: preparing and inspecting raw materials, namely preparing a pump body, a front pump cover, a rear pump cover, a plurality of rotating pieces, a knob and a ball bearing, and inspecting whether the surface of the pump body is damaged or not;

step 2: roughly milling the end face of the pump body, and roughly milling the surface of the pump body by using a common milling machine to ensure that the thicknesses of the upper surface and the lower surface of the pump body are consistent;

and step 3: roughly grinding the end face of the pump body, roughly grinding the surface of the pump body by using a grinding machine, and removing burrs and laces;

and 4, step 4: boring a pump body, clamping the pump body on a common lathe, turning the pump body by a numerical control lathe, processing annular caulking grooves on two sides of the pump body, processing positioning pins at the bottoms of the annular caulking grooves at reserved positions during cutting, and then processing a plurality of slots on the outer surface of the pump body by using a boring machine;

and 5: drilling a pump body, machining a through groove on the bottom wall in the slot by using a drilling machine, and then machining sliding grooves on two sides of the through groove by using a lathe;

step 6: finely grinding the pump body, namely finely grinding the surface of the pump body, the annular caulking groove, the through groove and the sliding groove by using a grinding machine to ensure that the surface of the pump body, the annular caulking groove, the through groove and the sliding groove are smooth;

and 7: a pump body leakage test, namely, a pump body is immersed in water after being pressurized and sealed by using an air pressure immersion leakage test method, and the water surface is confirmed to have no bubbles escaping within a specified time;

and step 8: pump body inspection, wherein the pump body subjected to a leakage test is inspected, the surface thickness of the pump body is confirmed, the sizes of the slot, the through groove and the sliding groove are all within standard tolerance, and the pump body is processed after the pump body is confirmed to be error-free;

and step 9: processing a joint surface of the front pump cover and the pump body, and processing a bearing hole at the front pump cover by using a boring machine;

step 10: processing the end face of the front pump cover, grinding the front pump cover by using a numerical control machine, processing an annular embedded block, and processing a clamping groove and a positioning groove on the outer surface of the annular embedded block;

step 11: the front pump cover is inspected, the thickness of the annular embedded block and the sizes of the clamping groove and the positioning groove are confirmed to be within the standard tolerance, and after the front pump cover is confirmed to be correct, the machining process of the front pump cover is finished;

step 12: processing a joint surface of the rear pump cover and the pump body, and processing a bearing hole at the rear pump cover by using a boring machine;

step 13: processing the end face of the rear pump cover, grinding the rear pump cover by using a numerical control machine, processing an annular embedded block, and processing a clamping groove and a positioning groove on the outer surface of the annular embedded block;

step 14: inspecting the rear pump cover, confirming that the thickness of the annular embedded block and the sizes of the clamping groove and the positioning groove are within the standard tolerance, and finishing the machining process of the rear pump cover after confirming that no error exists;

step 15: assembling, namely assembling the rotating part, the two gears, the front pump cover, the rear pump cover and the pump body mutually to form a complete gear pump;

step 16: a gear pump leakage test, namely, a gear pump is pressurized and sealed and then is immersed in water by using an air pressure immersion leakage test method, and no bubble escapes from the water surface within a specified time;

and step 17: testing and inspecting the gear pump, debugging the gear pump and confirming that the gear pump can work normally;

step 18: warehousing

In conclusion, the invention has the following beneficial effects: owing to be provided with the rotation piece, when preceding pump cover and back pump cover assemble, go into the annular caulking groove of pump body both sides with the annular abaculus card on preceding pump cover and the back pump cover, rotate the knob afterwards, make the screw rod rotate thereupon, because bayonet lock threaded connection just can only slide along the length direction who leads to the groove on the screw rod, thereby make when the screw rod rotates, can drive the bayonet lock and be reciprocating motion along the length direction of screw rod, thereby make the bayonet lock move and finally block into the draw-in groove inside towards the direction of draw-in groove on the annular abaculus outer wall gradually, spacing through the bayonet lock to the annular abaculus, make the annular abaculus can't break away from the pump body, connect convenient operation and fast.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a pump body, a front pump cover and a rear pump cover in the present invention;

FIG. 3 is a half-sectional view of a pump body, a front pump cover and a rear pump cover in the present invention;

fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Reference numerals are as follows: 1. a pump body; 2. a front pump cover; 3. a rear pump cover; 4. an annular caulking groove; 5. an annular insert; 6. a slot; 7. a ball bearing; 8. a through groove; 9. an optical axis; 10. a screw; 11. a knob; 12. a bayonet lock; 13. a card slot; 14. a chute; 15. a slider; 16. positioning pins; 17. positioning a groove; 18. an annular projection; 19. an annular groove; 20. a spline; 21. a keyway; 22. mounting grooves; 23. fixing grooves; 24. and fixing blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1 to 4, a gear pump comprises a pump body 1, a front pump cover 2 and a rear pump cover 3 are respectively arranged on two sides of the pump body 1, the front pump cover 2 and the rear pump cover 3 are made of stainless steel material, annular caulking grooves 4 are respectively arranged on two side walls of the pump body 1, annular caulking blocks 5 for clamping the annular caulking grooves 4 are respectively arranged on the front pump cover 2 and the rear pump cover 3, a plurality of positioning pins 16 are arranged on the inner bottom wall of the annular caulking grooves 4, a plurality of positioning grooves 17 for clamping the positioning pins 16 are arranged on the outer wall of the annular caulking blocks 5, a plurality of slots 6 are respectively arranged on two sides of the outer wall of the pump body 1, ball bearings 7 are in interference fit in the slots 6, through grooves 8 communicated with the annular caulking grooves 4 are arranged on the inner bottom wall of the slots 6, rotating pieces are arranged in the inner rings of the ball bearings 7, and comprise optical axes 9 slidably connected to the inner rings of the ball bearings 7, spline 20 is arranged on the inner circumferential wall of an inner ring of ball bearing 7, a key groove 21 for clamping spline 20 is arranged on the outer circumferential wall of optical axis 9 along the length direction, a screw 10 is arranged at one end of optical axis 9 facing to through groove 8, a knob 11 is arranged at the other end, a mounting groove 22 for clamping the top end of optical axis 9 is arranged on the bottom surface of knob 11, fixing grooves 23 are arranged on both sides of the inner circumferential wall of mounting groove 22, fixing blocks 24 for clamping into fixing grooves 23 are arranged on both sides of the outer circumferential wall of the top end of optical axis 9, knob 11 is rotatably connected inside slot 6, annular convex block 18 with semicircular cross section is arranged on the outer circumferential wall of knob 11 along the circumference direction, annular groove 19 for clamping annular convex block 18 is arranged on the inner circumferential wall of slot 6, bayonet lock 12 is connected with the outer circumferential wall of screw 10 by screw thread, bayonet lock 12 is slidably connected inside through groove 8 along the length direction of through groove 8, sliding grooves 14 are arranged on both sides of the inner circumferential wall of through groove 8 along the length direction, the two sides of the clamping pin 12 are both provided with a sliding block 15 for being clamped into the sliding groove 14, and the outer wall of the annular embedded block 5 is provided with a clamping groove 13 for clamping the bottom end of the clamping pin 12.

Owing to be provided with the rotation piece, when preceding pump cover 2 and back pump cover 3 assemble, go into the annular caulking groove 4 of the pump body 1 both sides with annular abaculus 5 card on preceding pump cover 2 and the back pump cover 3, rotate knob 11 afterwards, make screw rod 10 rotate along with it, because bayonet lock 12 threaded connection just can only slide along the length direction who leads to groove 8 on screw rod 10, thereby make when screw rod 10 rotates, can drive bayonet lock 12 and be reciprocating motion along the length direction of screw rod 10, thereby make bayonet lock 12 can move and finally inside the card goes into bayonet lock 13 towards the direction of draw-in groove 13 on the 5 outer walls of annular abaculus gradually, spacing to annular abaculus 5 through bayonet lock 12, make annular abaculus 5 can's the unable pump body 1 that breaks away from, connect convenient operation is swift.

Because logical groove 8 internal perisporium both sides have all been seted up spout 14, bayonet lock 12 both sides are provided with slider 15, slide in spout 14 after going into spout 14 through slider 15 card, have realized bayonet lock 12 at the inside sliding connection of logical groove 8 to spacing through spout 14 to slider 15, make bayonet lock 12 can only slide along the length direction of spout 14, and the slip process is more stable smooth and easy.

Because be provided with locating pin 16 on the diapire in the annular abaculus 4, the constant head tank 17 has been seted up on the annular abaculus 5, go into the in-process of annular abaculus 4 at the card of annular abaculus 5, locating pin 16 goes into the constant head tank 17 thereupon in, through the location effect of locating pin 16 to constant head tank 17 for draw-in groove 13 can accurate alignment lead to groove 8, and spacing to annular abaculus 5 through locating pin 16, make annular abaculus 5 difficult the emergence rock, connect more stably.

Because be provided with annular lug 18 on the 11 periphery walls of knob, annular groove 19 has been seted up on the internal perisporium of slot 6, through going into annular lug 18 card annular groove 19 in, make annular lug 18 can be at annular groove 19 internal rotation, thereby realized the rotation of knob 11 in slot 6 and connected, and spacing through annular groove 19 to annular lug 18, make knob 11 only can rotate in slot 6, unable upper and lower slip, thereby make the rotation process of knob 11 more stable.

Because ball bearing 7 circles in and is provided with spline 20, has seted up keyway 21 on the 9 periphery walls of optical axis, through keyway 21 to spline 20 spacing for optical axis 9 can link to each other with ball bearing 7, and realized optical axis 9 at the inside sliding connection of ball bearing 7, and connect convenient operation swift.

Because mounting groove 22 has been seted up on the 11 bottom surfaces of knob, when linking to each other knob 11 with optical axis 9, with the mounting groove 22 and the card of optical axis 9 top alignment knob 11, when mounting groove 22 is gone into to optical axis 9 top card, the fixed block 24 of optical axis 9 both sides is gone into the fixed slot 23 of mounting groove 22 both sides thereupon, it is spacing to fixed block 24 through fixed slot 23, make knob 11 rotate and to drive optical axis 9 and rotate, and make knob 11 be difficult for extracting from optical axis 9 top, it is more stable to connect.

Because the pump body 1, preceding pump cover 2 and back pump cover 3 are made by stainless steel material, stainless steel material has better intensity and corrosion resisting property for pump body 1, preceding pump cover 2 and 3 intensity of back pump cover are better, and difficult damage, and corrosion resisting property is outstanding, and be difficult for rustting, have prolonged the life of gear pump greatly.

The working principle is as follows:

when the front pump cover 2 and the rear pump cover 3 are assembled, the annular embedded blocks 5 on the front pump cover 2 and the rear pump cover 3 are clamped into the annular embedded grooves 4 on two sides of the pump body 1, the positioning pins 16 in the annular embedded grooves 4 are clamped into the positioning grooves 17 on the annular embedded blocks 5, so that the clamping grooves 13 are aligned with the clamping pins 12, then the knob 11 in the slot 6 is rotated, so that the annular convex blocks 18 on two sides of the knob 11 rotate in the annular embedded grooves 4, the fixing blocks 24 clamped in the fixing grooves 23 are driven to rotate, the optical axis 9 clamped in the ball bearing 7 rotates and drives the screw rod 10 to rotate along with the optical axis, the clamping pins 12 in threaded connection with the screw rod 10 are limited by the sliding blocks 15, the screw rod 10 rotates to drive the clamping pins 12 to gradually feed towards the clamping grooves 13 on the annular embedded blocks 5 along the axial direction and finally clamp into the clamping grooves 13, so that the installation of the annular embedded blocks 5 is completed, and when the pump is disassembled, the knob 11 is rotated reversely, and the operation is convenient.

Example two:

a process for preparing a gear pump, which is used for preparing the gear pump as claimed in claims 1 to 7, comprising the following steps:

step 1: preparing and checking raw materials, namely preparing a pump body 1, a front pump cover 2, a rear pump cover 3, a plurality of rotating pieces, a knob 11 and a ball bearing 7, and checking whether the surface of the pump body is damaged or not;

step 2: roughly milling the end face of the pump body 1, roughly milling the surface of the pump body 1 by using a common milling machine, and ensuring the thickness of the upper surface and the lower surface of the pump body 1 to be consistent;

and step 3: roughly grinding the end face of the pump body 1, and roughly grinding the surface of the pump body 1 by using a grinding machine to remove burrs and laces;

and 4, step 4: boring a hole in a pump body 1, clamping the pump body 1 on a common lathe, turning the pump body 1 by a numerical control lathe, machining annular caulking grooves 4 on two sides of the pump body 1, machining positioning pins 16 at the bottoms of the annular caulking grooves 4 at reserved positions during cutting, and then machining a plurality of slots 6 in the outer surface of the pump body 1 by using a boring machine;

and 5: drilling a hole in the pump body 1, machining a through groove 8 in the inner bottom wall of the slot 6 by using a drilling machine, and then machining sliding grooves 14 in two sides of the through groove 8 by using a lathe;

and 6: finely grinding the pump body 1, and finely grinding the surface of the pump body 1, the annular caulking groove 4, the through groove 8 and the sliding groove 14 by using a grinding machine to ensure that the surface of the pump body 1, the annular caulking groove 4, the through groove 8 and the sliding groove 14 are smooth and flat;

and 7: a pump body 1 is tested for leakage, the pump body 1 is pressurized and sealed by using an air pressure immersion leakage test method and then is immersed in water, and it is confirmed that no bubbles escape from the water surface within a specified time;

and 8: the pump body 1 is inspected, the pump body 1 subjected to a leakage test is inspected, the surface thickness of the pump body and the sizes of the slot 6, the through groove 8 and the sliding groove 14 are determined to be within a standard tolerance, and after the pump body is determined to be correct, the machining process of the pump body 1 is completed;

and step 9: processing a joint surface of the front pump cover 2 and the pump body 1, and processing a bearing hole at the front pump cover 2 by using a boring machine;

step 10: processing the end face of the front pump cover 2, grinding the front pump cover 2 by using a numerical control machine, processing an annular embedded block 5, and processing a clamping groove 13 and a positioning groove 17 on the outer surface of the annular embedded block 5;

step 11: the front pump cover 2 is inspected, the thickness of the annular embedded block 5 and the sizes of the clamping groove 13 and the positioning groove 17 are determined to be within the standard tolerance, and after the accuracy is determined, the machining process of the front pump cover 2 is completed;

step 12: processing a joint surface of the rear pump cover 3 and the pump body 1, and processing a bearing hole at the rear pump cover 3 by using a boring machine;

step 13: processing the end face of the rear pump cover 3, grinding the rear pump cover 3 by using a numerical control machine, processing an annular embedded block 5, and processing a clamping groove 13 and a positioning groove 17 on the outer surface of the annular embedded block 5;

step 14: inspecting the rear pump cover 3, confirming that the thickness of the annular embedded block 5 and the sizes of the clamping groove 13 and the positioning groove 17 are within the standard tolerance, and finishing the machining process of the rear pump cover 3 after confirming that no error exists;

step 15: assembling, the rotating piece, the two gears, the front pump cover 2, the rear pump cover 3 and the pump body 1 are assembled with each other to form a complete gear pump, wherein during the specific assembly, the ball bearing 7 is firstly knocked into the slot 6 until the ball bearing 7 is abutted against the inner bottom wall of the slot 6, then the bayonet 12 is screwed on the screw rod 10 of the rotating piece, the optical axis 9 of the rotating piece is upwards clamped into the ball bearing 7 from the inside of the pump body 1, the annular embedded blocks 5 of the front pump cover 2 and the rear pump cover 3 are clamped into the annular embedded slot 4, then the knob 11 is aligned with the slot 6 and clamped into the annular embedded slot, so that the annular convex block 18 on the outer peripheral wall of the knob 11 is clamped into the annular groove 19, the top end of the optical axis 9 is clamped into the mounting groove 22, the fixed blocks 24 on the two sides of the optical axis 9 are clamped into the fixed grooves 23, then the two gears are installed in the pump body 1, the annular embedded blocks 5 on the front pump cover 2 and the rear pump cover 3 are aligned with the annular embedded slot 4 and clamped into the rotary knob 11, so that the bayonet 12 is clamped into the bayonet 13;

step 16: a gear pump leakage test, namely, a gear pump is pressurized and sealed and then is immersed in water by using an air pressure immersion leakage test method, and no bubble escapes from the water surface within a specified time;

and step 17: testing and inspecting the gear pump, debugging the gear pump and confirming that the gear pump can work normally;

step 18: and (7) warehousing.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.

Claims (8)

1. The utility model provides a gear pump, includes the pump body (1), pump body (1) both sides are provided with preceding pump cover (2) and back pump cover (3) respectively, its characterized in that: the pump comprises a pump body (1), wherein two side walls of the pump body (1) are respectively provided with an annular caulking groove (4), the two sides of the outer wall of the pump body (1) are respectively provided with an annular caulking block (5) used for being clamped into the annular caulking groove (4), the two sides of the outer wall of the pump body (1) are respectively provided with a plurality of slots (6), ball bearings (7) are arranged in the slots (6) in an interference fit manner, the inner bottom walls of the slots (6) are provided with through grooves (8) communicated with the annular caulking grooves (4), rotating parts are arranged in inner rings of the ball bearings (7), each rotating part comprises an optical axis (9) which is slidably connected to the inner parts of the inner rings of the ball bearings (7), one ends of the optical axes (9) facing the through grooves (8) are provided with screw rods (10), the other ends of the optical rods are provided with knobs (11), the knobs (11) are rotatably connected to the inner parts of the slots (6), and bayonet locks (12) are in threaded connection with the outer peripheral walls of the screw rods (10), bayonet lock (12) are inside leading to groove (8) along the length direction sliding connection who leads to groove (8), offer draw-in groove (13) that are used for bayonet lock (12) bottom card to go into on annular abaculus (5) outer wall.

2. A gear pump according to claim 1, characterized in that: the interior perisporium both sides that lead to groove (8) have all seted up spout (14) along length direction, bayonet lock (12) both sides all are provided with slider (15) that are used for the card to go into spout (14).

3. A gear pump according to claim 1, characterized in that: a plurality of positioning pins (16) are arranged on the inner bottom wall of the annular embedding groove (4), and a plurality of positioning grooves (17) for clamping the positioning pins (16) are formed in the outer wall of the annular embedding block (5).

4. A gear pump according to claim 1, characterized in that: the rotary knob is characterized in that an annular convex block (18) with a semicircular cross section is arranged on the outer peripheral wall of the rotary knob (11) along the circumferential direction, and an annular groove (19) for clamping the annular convex block (18) is formed in the inner peripheral wall of the slot (6).

5. A gear pump according to claim 1, characterized in that: be provided with spline (20) on ball bearing (7)'s the inner circle inner wall, offer keyway (21) that are used for spline (20) card to go into along length direction on optical axis (9) periphery wall.

6. A gear pump according to claim 5, characterized in that: offer on knob (11) the bottom surface and be used for mounting groove (22) that optical axis (9) top card was gone into, fixed slot (23) have all been seted up to mounting groove (22) internal perisporium both sides, optical axis (9) top periphery wall both sides all are provided with fixed block (24) that are used for the card to go into fixed slot (23).

7. A gear pump according to claim 1, characterized in that: the pump body (1), the front pump cover (2) and the rear pump cover (3) are all made of stainless steel materials.

8. A preparation process of a gear pump is characterized by comprising the following steps: the gear pump according to claims 1 to 7, comprising the steps of:

step 1: preparing and checking raw materials, namely preparing a pump body (1), a front pump cover (2), a rear pump cover (3), a plurality of rotating parts, a knob (11) and a ball bearing (7), and checking whether the surfaces of the rotating parts, the knob and the ball bearing are damaged or not;

step 2: roughly milling the end face of the pump body (1), roughly milling the surface of the pump body (1) by using a common milling machine, and ensuring the thickness of the upper surface and the lower surface of the pump body (1) to be consistent;

and step 3: roughly grinding the end face of the pump body (1), and roughly grinding the surface of the pump body (1) by using a grinding machine to remove burrs and laces;

and 4, step 4: boring a hole in a pump body (1), clamping the pump body (1) on a common lathe, turning the pump body (1) by using a numerical control lathe, machining annular caulking grooves (4) on two sides of the pump body (1), machining positioning pins (16) at the bottoms of the annular caulking grooves (4) at reserved positions during cutting, and then machining a plurality of slots (6) in the outer surface of the pump body (1) by using a boring machine;

and 5: drilling a pump body (1), machining a through groove (8) on the inner bottom wall of the slot (6) by using a drilling machine, and then machining sliding grooves (14) on two sides of the through groove (8) by using a lathe;

and 6: finely grinding the pump body (1), and finely grinding the surface of the pump body (1), the annular caulking groove (4), the through groove (8) and the sliding groove (14) by using a grinding machine to ensure that the surface of the pump body (1), the annular caulking groove (4), the through groove (8) and the sliding groove (14) are smooth and flat;

and 7: a pump body (1) is tested for leakage, the pump body (1) is immersed in water after being pressurized and sealed by using an air pressure immersion leakage test method, and no bubbles escape from the water surface within a specified time;

and 8: inspecting the pump body (1), inspecting the pump body (1) subjected to a leakage test, confirming that the surface thickness of the pump body and the sizes of the slot (6), the through groove (8) and the sliding groove (14) are within standard tolerance, and finishing the machining process of the pump body (1) after confirming that no errors exist;

and step 9: processing a joint surface of the front pump cover (2) and the pump body (1), and processing a bearing hole at the front pump cover (2) by using a boring machine;

step 10: processing the end face of the front pump cover (2), grinding the front pump cover (2) by using a numerical control machine tool, processing an annular embedded block (5), and processing a clamping groove (13) and a positioning groove (17) on the outer surface of the annular embedded block (5);

step 11: the front pump cover (2) is inspected, the thickness of the annular embedded block (5) and the sizes of the clamping groove (13) and the positioning groove (17) are determined to be within the standard tolerance, and after the sizes are determined to be correct, the machining process of the front pump cover (2) is completed;

step 12: processing a joint surface of the rear pump cover (3) and the pump body (1), and processing a bearing hole at the position of the rear pump cover (3) by using a boring machine;

step 13: processing the end face of the rear pump cover (3), grinding the rear pump cover (3) by using a numerical control machine tool, processing an annular embedded block (5), and processing a clamping groove (13) and a positioning groove (17) on the outer surface of the annular embedded block (5);

step 14: inspecting the rear pump cover (3), confirming that the thickness of the annular embedded block (5) and the sizes of the clamping groove (13) and the positioning groove (17) are within the standard tolerance, and finishing the machining process of the rear pump cover (3) after confirming that no error exists;

step 15: assembling, namely assembling the rotating part, the two gears, the front pump cover (2), the rear pump cover (3) and the pump body (1) to form a complete gear pump;

step 16: a gear pump leakage test, namely, a gear pump is pressurized and sealed and then is immersed in water by using an air pressure immersion leakage test method, and no bubble escapes from the water surface within a specified time;

and step 17: testing and inspecting the gear pump, debugging the gear pump and confirming that the gear pump can work normally;

step 18: and (7) warehousing.

Images