CN208564959U

CN208564959U - A kind of double cam impeller pump preventing rotor displacement

Info

Publication number: CN208564959U
Application number: CN201821087301.2U
Authority: CN
Inventors: 姚蓉平
Original assignee: Rafa Pump Technology (ningbo) Co Ltd
Current assignee: Rafa Pump Technology (ningbo) Co Ltd
Priority date: 2018-07-10
Filing date: 2018-07-10
Publication date: 2019-03-01
Anticipated expiration: 2028-07-10

Abstract

The utility model discloses a kind of double cam impeller pumps for preventing rotor displacement, including pump cover, main shaft and helical gear, the pump housing is provided on the right side of the pump cover, and gear-box is installed on the right side of the pump housing, hanging ring is provided with above the right side of the gear-box, and oil filler plug is installed on the right side of hanging ring, positioning pin is provided on the right side of the oil filler plug, and bearing block is installed on the inside of positioning pin, the surface of the main shaft is provided with shaft coupling flat key, and main shaft is located at the inside of gear-box, the helical gear surface is fixed with gear flat key, and helical gear is located at the left side of locked spacer.This is prevented in the double cam impeller pump of rotor displacement, the fixed form of gear and axis is all in such a way that flat key is fixed, and in order to which effect is more preferable, two gears also use the helical teeth wheel construction of low pulse, the overall performance of impeller pump is set not only to have the function of preventing displacement, there are also the effect of distribution cavity internal impact power, improve service life and stability.

Description

A kind of double cam impeller pump preventing rotor displacement

Technical field

The utility model relates to rotor pump technical field, specially a kind of double cam impeller pump for preventing rotor displacement.

Background technique

Impeller pump, which refers to through the relative motion between rotor and the pump housing, changes swept volume, and then increases the energy of liquid The pump added, impeller pump are a kind of positive displacement pumps of rotation, have positive discharge capacity property, flow does not change with economy, double Lobed rotor pump belongs to one kind of impeller pump, also referred to as Cam type double-rotor pump, is with no blocking, strong self-priming, positive and negative rotation, corrosion resistant Lose wear-resistant, gas liquid solid blending transportation feature no-valve type, positive displacement volume formula pump.

However the fixed form of the transmission gear and axis pumped on the market is all using a gear flat key, a gear is used Expansion set or tapered sleeve, this fixed form is excessive or while having large granular materials to enter cavity can be displaced in pump chamber pressure, causes The friction damage of rotor and rotor shortens the service life of product, for this purpose, it is proposed that a kind of the service life is longer and stability Higher double cam impeller pump.

Utility model content

The purpose of this utility model is to provide a kind of double cam impeller pumps for preventing rotor displacement, to solve above-mentioned background The fixed form of the transmission gear pumped on the market and axis that propose in technology is all using a gear flat key, and a gear is used Expansion set or tapered sleeve, this fixed form is excessive or while having large granular materials to enter cavity can be displaced in pump chamber pressure, causes The friction damage of rotor and rotor, the problem of shortening the service life of product.

To achieve the above object, the utility model provides the following technical solutions: a kind of biconvex preventing rotor displacement rotates Son pumps, including pump cover, main shaft and helical gear, is provided with the pump housing on the right side of the pump cover, and gear-box is equipped on the right side of the pump housing, It is provided with hanging ring above the right side of the gear-box, and oil filler plug is installed on the right side of hanging ring, the right side setting of the oil filler plug Have positioning pin, and bearing block be installed on the inside of positioning pin, the right side of the bearing block is provided with rear end cap, and bearing block with O-ring is inlaid between rear end cap, the surface of the main shaft is provided with shaft coupling flat key, and main shaft is located at the inside of gear-box, Outside framework oil seal is mounted at left and right sides of the main shaft, and outside framework oil seal is provided with axis close to the side of main shaft vertical centerline It holds, is mounted with countershaft on the downside of the main shaft, the intermediate outside of the main shaft and countershaft is provided with gear nut, and gear spiral shell Locked spacer is installed, the helical gear surface is fixed with gear flat key, and helical gear is located at locked spacer on the left of cap Left side is mounted on drive end bearing bracket on the left of the left side of the main shaft and countershaft, and is provided with mechanical seal on the left of drive end bearing bracket, institute The left-hand face of the left-hand face and countershaft of stating main shaft is provided with axis flat key, and on the outside of the left end of main shaft and outside the left end of countershaft Side is mounted on rotor, is provided with rotor press plate between the rotor and pump cover, and the inside of rotor press plate is through there is rotor lock Tight screw.

Preferably, the horizontal center line between the main shaft and countershaft about pump cover is symmetrical, and main shaft and countershaft pass through Gear flat key is connect with helical gear.

Preferably, the helical gear about pump cover horizontal center line be symmetrical arranged there are two, and between helical gear mutually Engagement, and connected by gear nut and locked spacer between helical gear and main shaft and countershaft.

Preferably, size matches the outside framework oil seal between main shaft and countershaft respectively, and the lateral surface of outside framework oil seal It is fitted closely between the medial surface of rear end cap and the medial surface of drive end bearing bracket respectively.

Preferably, between the right side of the bearing block and the medial surface of rear end cap, the medial surface and gear-box of bearing block Right side between, between the medial surface of rear end cap and the right side of bearing, the left side of the medial surface of drive end bearing bracket and gear-box Between, between the medial surface of drive end bearing bracket and the left side of bearing, between the left side of the pump housing and the right side of pump cover be provided with O Type circle, and size is equal between O-ring.

Preferably, the rotor is connect by rotor lock-screw and rotor press plate with pump cover, and rotor respectively with main shaft It is cooperatively connected between countershaft by axis flat key.

Compared with prior art, the utility model has the beneficial effects that this is prevented in the double cam impeller pump of rotor displacement, For the fixed form of gear and axis all in such a way that flat key is fixed, and in order to which effect is more preferable, two gears also use low pulse Helical teeth wheel construction, make the overall performance of impeller pump not only have prevent displacement function, there are also distribution cavity internal impact power Effect, improves service life and stability, double cam impeller pump include two helical gears, a main shaft and a countershaft, main shaft With being symmetrical arranged for countershaft, it ensure that double cam impeller pump transmission process will not deviate or unbalance, main shaft and countershaft are logical It crosses gear flat key to connect with helical gear, in such a way that flat key is fixed, both ensure that stable transmission, in turn ensure impeller pump itself Close structure is intermeshed between two helical gears, can be realized kinetic energy transmitting, and two helical gears are all made of the helical teeth of low pulse Wheel construction makes the overall performance of impeller pump not only have the function of preventing displacement, and there are also the effects of distribution cavity internal impact power, mention The service life and stability of high rotor pump, the setting of outside framework oil seal ensure that main shaft and each comfortable rear end cap of countershaft and front end After running through in lid, impeller pump self structure can also keep preferable leakproofness, in rear end cap, bearing block, drive end bearing bracket and pump Lid position is provided with O-ring, ensure that rear end cap, bearing block, position and associated contact are deposited at drive end bearing bracket and pump cover In preferable safeguard structure, weaken colliding forces, to ensure that the service life and imporosity of impeller pump, rotor with Main shaft and countershaft are also respectively cooperatively connected using the connection type of axis flat key, make when rotor pump work structure be completely embedded and Stablize, the setting of rotor lock-screw rotor easy to disassemble, and facilitates personnel in time and rapidly to the installation elasticity of rotor It is adjusted.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model main shaft and countershaft mounting structure schematic diagram；

Fig. 3 is enlarged structure schematic diagram at A in the utility model Fig. 1.

In figure: 1, pump cover；2, the pump housing；3, gear-box；4, hanging ring；5, oil filler plug；6, positioning pin；7, bearing block；8, rear end Lid；9, O-ring；10, shaft coupling flat key；11, main shaft；12, outside framework oil seal；13, bearing；14, countershaft；15, gear nut；16, Locked spacer；17, helical gear；18, gear flat key；19, drive end bearing bracket；20, mechanical seal；21, axis flat key；22, rotor；23, turn Sub- pressing plate；24, rotor lock-screw.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of double cam rotor preventing rotor displacement Pump, including pump cover 1, main shaft 11 and helical gear 17, the right side of pump cover 1 is provided with the pump housing 2, and the right side of the pump housing 2 is equipped with gear Case 3, the right side top of gear-box 3 is provided with hanging ring 4, and the right side of hanging ring 4 is equipped with oil filler plug 5, the right side setting of oil filler plug 5 There is positioning pin 6, and the inside of positioning pin 6 is equipped with bearing block 7, the right side of bearing block 7 is provided with rear end cap 8, and bearing block 7 O-ring 9 is inlaid between rear end cap 8, the surface of main shaft 11 is provided with shaft coupling flat key 10, and main shaft 11 is located at gear-box 3 Inside, the left and right sides of main shaft 11 is mounted on outside framework oil seal 12, and outside framework oil seal 12 is close to 11 vertical centerline of main shaft Side is provided with bearing 13, and the downside of main shaft 11 is mounted with countershaft 14, and the intermediate outside of main shaft 11 and countershaft 14 is respectively provided with teeth Nut 15 is taken turns, and the left side of gear nut 15 is equipped with locked spacer 16, the surface of helical gear 17 is fixed with gear flat key 18, and Helical gear 17 is located at the left side of locked spacer 16, and the horizontal center line between main shaft 11 and countershaft 14 about pump cover 1 is symmetrical, and main Axis 11 and countershaft 14 connects by gear flat key 18 with helical gear 17, main shaft 11 and countershaft 14 it is arranged symmetrically, ensure that pair Lobed rotor pump transmission process will not deviate or unbalance, and main shaft 11 and countershaft 14 pass through gear flat key 18 and helical gear 17 Connection both ensure that stable transmission, in turn ensure that impeller pump self structure is close, helical gear 17 in such a way that flat key is fixed There are two horizontal center line about pump cover 1 is symmetrical arranged, and it is intermeshed between helical gear 17, and helical gear 17 and main shaft It is connected by gear nut 15 and locked spacer 16 between 11 and countershaft 14, is intermeshed between two helical gears 17, it can Realize kinetic energy transmitting, two helical gears 17 are all made of the helical teeth wheel construction of low pulse, have the overall performance of impeller pump not only anti- The function of only shifting, there are also the effects of distribution cavity internal impact power, improve the service life and stability of impeller pump, main shaft 11 Left side and the left side of countershaft 14 be mounted on drive end bearing bracket 19, and the left side of drive end bearing bracket 19 is provided with mechanical seal 20, skeleton oil Size matches envelope 12 between main shaft 11 and countershaft 14 respectively, and the lateral surface of outside framework oil seal 12 is respectively and in rear end cap 8 It is fitted closely between side and the medial surface of drive end bearing bracket 19, the setting of outside framework oil seal 12, ensure that main shaft 11 and countershaft 14 are respective After running through in rear end cap 8 and drive end bearing bracket 19, impeller pump self structure can also keep preferable leakproofness, the right side of bearing block 7 Between end face and the medial surface of rear end cap 8, between the medial surface of bearing block 7 and the right side of gear-box 3, the inside of rear end cap 8 Between face and the right side of bearing 13, between the medial surface of drive end bearing bracket 19 and the left side of gear-box 3, the medial surface of drive end bearing bracket 19 Between the left side of bearing 13, O-ring 9, and O-ring 9 are provided between the left side of the pump housing 2 and the right side of pump cover 1 Between size be equal, be provided with O-ring 9 in rear end cap 8, bearing block 7, drive end bearing bracket 19 and 1 position of pump cover, guarantee At rear end cap 8, bearing block 7, drive end bearing bracket 19 and pump cover 1 there is preferable safeguard structure in position and associated contact, cut Weak collision active force, thus ensure that the service life and imporosity of impeller pump, the left-hand face and countershaft 14 of main shaft 11 Left-hand face be provided with axis flat key 21, and be mounted on rotor on the outside of the left end of main shaft 11 and on the outside of the left end of countershaft 14 22, it is provided with rotor press plate 23 between rotor 22 and pump cover 1, and the inside of rotor press plate 23 is through there is rotor lock-screw 24, Rotor 22 is connect by rotor lock-screw 24 and rotor press plate 23 with pump cover 1, and rotor 22 respectively with main shaft 11 and countershaft 14 Between be cooperatively connected by axis flat key 21, rotor 22 and main shaft 11 and countershaft 14 also respectively using the connection type of axis flat key 21 into Row is cooperatively connected, and so that structure when rotor pump work is completely embedded and is stablized, the setting of rotor lock-screw 24 rotor easy to disassemble 22, and facilitate personnel in time and rapidly the installation elasticity of rotor 22 is adjusted.

Working principle: for this kind of double cam impeller pump, two helical gears, 17, masters are internally provided in impeller pump Axis 11 and a countershaft 14, and main shaft 11 and countershaft 14 are connect by gear flat key 18 with helical gear 17, it is solid using flat key Fixed mode, both ensure that stable transmission, in turn ensure that impeller pump self structure is close, and main shaft 11 and countershaft 14 are respectively and rear end Outside framework oil seal 12 is loaded between lid 8 and drive end bearing bracket 19 respectively, main shaft 11 and countershaft 14 respectively install mechanical seal between the pump housing 2 20, make impeller pump internal structure high-seal, other than ensure that main shaft 11 and countershaft 14 can be operating normally, and will not be to rotor Pump causes leakage contribution, and axis flat key 21 is all made of between rotor 22 and main shaft 11 and countershaft 14 and is attached, so that rotor 22 exists It after rotation, is able to drive main shaft 11 and countershaft 14 is respectively rotated, remove and pass through between helical gear 17 and main shaft 11 and countershaft 14 Outside gear flat key 18 is cooperatively connected, in order to guarantee that helical gear 17 is completely embedded with main shaft 11 and countershaft 14, it is also necessary to add at one Connection structure, i.e. gear nut 15 and locked spacer 16 when installation, need for locked spacer 16 to be attached to the right-hand end of helical gear 17 Face is then again locked to helical gear 17 with gear nut 15, in order to guarantee that main shaft 11 and countershaft 14 firmly install, passes Dynamic stability needs respectively to add bearing 13 in the left and right sides of main shaft 11 and countershaft 14, during assemble rotor pump, needs The placement of great care O-ring 9, between the right side of bearing block 7 and the medial surface of rear end cap 8, the medial surface of bearing block 7 with Between the right side of gear-box 3, between the medial surface of rear end cap 8 and the right side of bearing 13, the medial surface and tooth of drive end bearing bracket 19 Between the left side of roller box 3, between the medial surface of drive end bearing bracket 19 and the left side of bearing 13, the left side of the pump housing 2 and pump cover 1 O-ring 9 is respectively provided between right side, O-ring 9 can play the role of buffering, sealing to each connecting portion, finally, by internal The gear-box 3 and the pump housing 2 that element installs carry out assembly connection, are installed between bearing block 7 and gear-box 3 by positioning pin 6 It is fixed, rear end cap 8 is installed to the right side of bearing block 7, pump cover 1 is installed to the left side of the pump housing 2, and entire impeller pump installation terminates, It can come into operation after detection check, complete the use process of entire double cam impeller pump like this.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of double cam impeller pump for preventing rotor displacement, including pump cover (1), main shaft (11) and helical gear (17), feature It is: is provided with the pump housing (2) on the right side of the pump cover (1), and gear-box (3), the gear-box are installed on the right side of the pump housing (2) (3) it is provided with hanging ring (4) above right side, and oil filler plug (5) is installed on the right side of hanging ring (4), the right side of the oil filler plug (5) It is provided with positioning pin (6), and bearing block (7) is installed on the inside of positioning pin (6), the right side of the bearing block (7) is provided with Rear end cap (8), and O-ring (9) are inlaid between bearing block (7) and rear end cap (8), the surface of the main shaft (11) is provided with connection Axis device flat key (10), and main shaft (11) is located at the inside of gear-box (3), is mounted on skeleton at left and right sides of the main shaft (11) Oil sealing (12), and outside framework oil seal (12) is provided with bearing (13), the main shaft close to the side of main shaft (11) vertical centerline (11) it is mounted on the downside of countershaft (14), the intermediate outside of the main shaft (11) and countershaft (14) is provided with gear nut (15), it and on the left of gear nut (15) is equipped with locked spacer (16), it is flat that the surface of the helical gear (17) is fixed with gear Key (18), and helical gear (17) is located at the left side of locked spacer (16), the left side of the main shaft (11) and the left side of countershaft (14) It is mounted on drive end bearing bracket (19), and is provided with mechanical seal (20) on the left of drive end bearing bracket (19), the left side table of the main shaft (11) The left-hand face of face and countershaft (14) is provided with axis flat key (21), and on the outside of the left end of main shaft (11) and the left end of countershaft (14) Outside is mounted on rotor (22), is provided with rotor press plate (23) between the rotor (22) and pump cover (1), and rotor press plate (23) inside, which is run through, rotor lock-screw (24).

2. a kind of double cam impeller pump for preventing rotor displacement according to claim 1, it is characterised in that: the main shaft (11) horizontal center line between countershaft (14) about pump cover (1) is symmetrical, and main shaft (11) and countershaft (14) pass through gear Flat key (18) is connect with helical gear (17).

3. a kind of double cam impeller pump for preventing rotor displacement according to claim 1, it is characterised in that: the helical gear (17) it there are two being symmetrical arranged about the horizontal center line of pump cover (1), and is intermeshed between helical gear (17), and helical gear (17) it is connect by gear nut (15) and locked spacer (16) between main shaft (11) and countershaft (14).

4. a kind of double cam impeller pump for preventing rotor displacement according to claim 1, it is characterised in that: the skeleton oil Seal that (12) size matches between main shaft (11) and countershaft (14) respectively, and the lateral surface of outside framework oil seal (12) respectively with rear end It covers between the medial surface of (8) and the medial surface of drive end bearing bracket (19) and fits closely.

5. a kind of double cam impeller pump for preventing rotor displacement according to claim 1, it is characterised in that: the bearing block (7) between the medial surface of right side and rear end cap (8), between the medial surface of bearing block (7) and the right side of gear-box (3), Between the medial surface of rear end cap (8) and the right side of bearing (13), the left side of the medial surface of drive end bearing bracket (19) and gear-box (3) Between, between the medial surface of drive end bearing bracket (19) and the left side of bearing (13), the right side of the left side of the pump housing (2) and pump cover (1) It is provided between face O-ring (9), and size is equal between O-ring (9).

6. a kind of double cam impeller pump for preventing rotor displacement according to claim 1, it is characterised in that: the rotor (22) connect by rotor lock-screw (24) and rotor press plate (23) with pump cover (1), and rotor (22) respectively with main shaft (11) It is cooperatively connected between countershaft (14) by axis flat key (21).