阅读说明：本技术 一种柱塞沿圆周分布的阀配流卧式高速往复泵 (Valve flow distribution horizontal high-speed reciprocating pump with circumferentially distributed plungers ) 是由 付家全 于 2020-05-19 设计创作，主要内容包括：本发明提供一种柱塞沿圆周分布的阀配流卧式高速往复泵,包括驱动轴、十字头驱动机构、十字头、十字头缸体、十字头油封、柱塞、柱塞主密封组件、泵头、入口单向阀、出口单向阀、泵入口和泵出口,其中所述十字头有多个,沿所述驱动轴的中心线的圆周均匀的布置在所述十字头缸体的滑道内,对应于每个所述十字头,布置有一个所述十字头油封、一个所述柱塞、一个所述柱塞主密封组件、一个所述入口单向阀和一个所述出口单向阀。本发明提供一种柱塞沿圆周分布的阀配流卧式高速往复泵,结构紧凑,流量脉动小,安装维护容易,柱塞在柱塞套中运动,防护性好,增加填料腔的长度时,节省液力端材料,介质和驱动端润滑油分隔彻底,不会污染驱动端润滑油。(The invention provides a valve flow distribution horizontal high-speed reciprocating pump with plungers distributed along the circumference, which comprises a driving shaft, a crosshead driving mechanism, a crosshead cylinder body, a crosshead oil seal, a plunger main sealing assembly, a pump head, an inlet check valve, an outlet check valve, a pump inlet and a pump outlet, wherein a plurality of crossheads are arranged, the number of crossheads is uniform along the circumference of the central line of the driving shaft and is arranged in a slideway of the crosshead cylinder body, and one crosshead oil seal, one plunger main sealing assembly, one inlet check valve and one outlet check valve are arranged corresponding to each crosshead. The invention provides a valve flow distribution horizontal high-speed reciprocating pump with circumferentially distributed plungers, which has the advantages of compact structure, small flow pulsation, easy installation and maintenance, good protection performance when the plungers move in plunger sleeves, saving of hydraulic end materials when the length of a packing cavity is increased, thorough separation of media and drive end lubricating oil, and no pollution to the drive end lubricating oil.)

1. The utility model provides a horizontal high-speed reciprocating pump of class is joined in marriage to valve that plunger distributes along circumference, characterized in that, including drive shaft (1), cross head actuating mechanism (2), cross head (3), cross head cylinder body (4), cross head oil blanket (5), plunger (6), plunger main seal subassembly (7), pump head (8), entry check valve (9), export check valve (10), pump inlet (11) and pump export (12), wherein cross head (3) have a plurality ofly, follow the circumference of drive shaft (1) central line is evenly arranged in the slide of cross head cylinder body (4), drive shaft (1) are followed drive shaft (1) central line is rotatory, cross head actuating mechanism (2) drive cross head (3) are reciprocating motion, corresponding to every cross head (3), arrange one cross head oil blanket (5), One said plunger (6), one said plunger main seal assembly (7), one said inlet check valve (9) and one said outlet check valve (10), said crosshead oil seal (5) is arranged on the outer circumference of the corresponding crosshead (3), said plunger (6) is arranged concentrically with the corresponding crosshead (3), one end of the plunger (6) is fixed with one end of the corresponding crosshead (3), said plunger main seal assembly (7) is arranged on the outer circumference of the corresponding crosshead of said plunger (6), said pump head (8) is fixed with said cylinder block (4), said pump head (8) is arranged with a plunger hole on the side of said crosshead cylinder block (4) corresponding to each said plunger (6), said plunger (6) is connected with the corresponding plunger hole of said pump head (8), said pump inlet (11) is connected with the corresponding plunger hole of said pump head (8) through said inlet check valve (9) The holes are communicated in a one-way mode, the plunger holes of the pump heads (8) are communicated with the pump outlets (12) in a one-way mode through the corresponding outlet one-way valves (10), the plungers (6) are consistent with the corresponding crosshead (3) in movement, the plungers (6) are in suction stroke, the corresponding outlet one-way valves (10) are closed, the corresponding inlet one-way valves (9) are opened, media in the pump inlets (11) enter the corresponding plunger holes of the pump heads (8) through the corresponding inlet one-way valves (9), the corresponding inlet one-way valves (9) are closed, the corresponding outlet one-way valves (10) are opened when the plungers (6) are in discharge stroke, and the corresponding media in the plunger holes of the pump heads (8) are discharged into the pump outlets (12) through the corresponding outlet one-way valves (10).

2. The valve-distributing horizontal high-speed reciprocating pump with circumferentially distributed plungers according to claim 1, characterized by comprising a pump cover (13), a pump cover pressure plate (14), and a sump recess (18), wherein the crosshead cylinder (4), the pump head (8), the pump cover (13), and the pump cover pressure plate (14) are sequentially arranged in order, the inlet check valve (9) and the outlet check valve (10) are horizontally arranged between the pump head (8) and the pump cover (13), the pump cover (13) is provided with the sump recess (18) at one side of the pump cover pressure plate (14), the plunger hole of the pump head (8) is unidirectionally communicated with the sump recess (18) through the corresponding outlet check valve (10), the sump recess (18) is communicated with the pump outlet (12), and the pressure plate (14) presses on the sump recess (18), the pump inlet (11) is arranged in the center of the pump head (8).

3. A valve-gated horizontal high-speed reciprocating pump with circumferentially distributed plungers according to claim 1, characterized by comprising plunger sleeves (15), one plunger sleeve (15) being arranged for each plunger (6), said plunger sleeves (15) being fitted over the corresponding plunger (6) and the corresponding crosshead (3).

4. A plunger circumferentially distributed valving horizontal high-speed reciprocating pump according to claim 1, characterized by comprising a secondary seal assembly (16) and a water isolating ring (17), one secondary seal assembly (16) and one water isolating ring (17) being arranged in correspondence of each plunger main seal assembly (7), the spacing space between the secondary seal assembly (16) and the corresponding plunger main seal assembly (7) being in communication with the pump inlet (11), the water isolating ring (17) being arranged on the side of the corresponding secondary seal assembly (16) close to the corresponding crosshead (3).

Technical Field

The invention relates to the technical field of high-speed reciprocating pumps, in particular to a valve flow distribution horizontal high-speed reciprocating pump with circumferentially distributed plungers.

Background

As described in chapter eleventh section of "reciprocating pump design", the high-speed reciprocating pump can be directly driven by a motor without a speed reducer, so that the structure of the pump is simplified, the volume is reduced, the weight is reduced, and the production cost is reduced; in addition, the high-speed multi-cylinder structure can also obviously reduce flow pulsation.

As described in chapter eleventh section of the design of reciprocating pumps, conventional high-speed reciprocating pumps, in which the plungers are arranged in a balanced or radial arrangement, are large, require a high-pressure pump to be very compact in some applications requiring the pump volume, such as an integrated reverse osmosis system, and are generally difficult to arrange in conventional high-speed reciprocating pumps.

For example, patent 202010330128X discloses a high speed reciprocating pump drive end based on nutation principle, wherein the crosshead is distributed along the circumference of the drive shaft, the structure is compact, the flow pulsation is small, and the pump is suitable for running at high speed.

Disclosure of Invention

The invention aims to solve the technical problem of providing a valve flow distribution horizontal high-speed reciprocating pump with circumferentially distributed plungers, which has the advantages of compact structure, small flow pulsation, easy installation and maintenance, good protection, capability of saving hydraulic end materials when the plungers move in plunger sleeves and increasing the length of a packing cavity, thorough separation of media and drive end lubricating oil and no pollution to the drive end lubricating oil.

In order to solve the above technical problems, the present invention provides a horizontal high-speed reciprocating pump with distributed plungers along the circumference, comprising a driving shaft, a crosshead driving mechanism, a crosshead cylinder body, a crosshead oil seal, a plunger main sealing assembly, a pump head, an inlet check valve, an outlet check valve, a pump inlet and a pump outlet, wherein a plurality of crossheads are arranged in a slideway of the crosshead cylinder body uniformly along the circumference of the center line of the driving shaft, the driving shaft rotates along the center line of the driving shaft, the crosshead driving mechanism drives the crosshead to reciprocate, one crosshead oil seal, one plunger main sealing assembly, one inlet check valve and one outlet check valve are arranged corresponding to each crosshead, the oil seals are arranged on the outer circumferential surface of the corresponding crosshead, the plungers are concentrically arranged with the corresponding crosshead, one end of the plunger is fixed with one end of the corresponding crosshead, the plunger main sealing assembly is arranged on the outer circumferential surface of the corresponding plunger, the pump heads are fixed with the crosshead cylinder body, one plunger hole is arranged on one side of the crosshead cylinder body of the pump head corresponding to each plunger, the plunger is communicated with the corresponding plunger hole of the pump head, the pump inlet is communicated with the corresponding plunger hole of the pump head in a one-way mode through the inlet one-way valve, the plunger hole of the pump head is communicated with the pump outlet in a one-way mode through the corresponding outlet one-way valve, the plunger is consistent with the movement of the corresponding crosshead, the corresponding outlet one-way valve is closed, the corresponding inlet one-way valve is opened, and the medium pumped into the pump inlet enters the corresponding plunger hole of the pump head through the corresponding inlet one-way valve, when the plunger is in a discharge stroke, the corresponding inlet one-way valve is closed, the corresponding outlet one-way valve is opened, and the medium in the plunger hole of the pump head is discharged into the pump outlet through the corresponding outlet one-way valve.

Optionally, including pump cover, pump cover clamp plate and collection liquid recess, wherein the cross head cylinder body the pump head the pump cover with pump cover clamp plate arranges in proper order, the entry check valve with the export check valve level is arranged the pump head with between the pump cover, the pump cover is in pump cover clamp plate one side is arranged collection liquid recess, the plunger hole of pump head is through corresponding the export check valve with the one-way intercommunication of collection liquid recess, collection liquid recess with pump export intercommunication, pump cover clamp plate presses on the collection liquid recess, the pump entry is arranged the center of pump head.

Optionally, a plunger sleeve is included, one for each plunger, the plunger sleeve being sleeved over the corresponding plunger and the corresponding crosshead.

Optionally, the plunger main sealing assembly comprises a secondary sealing assembly and a water-proof ring, one secondary sealing assembly and one water-proof ring are arranged corresponding to each plunger main sealing assembly, a space between the secondary sealing assembly and the corresponding plunger main sealing assembly is communicated with the pump inlet, and the water-proof ring is arranged on one side, close to the corresponding crosshead, of the corresponding secondary sealing assembly.

Compared with the prior art, the invention has the following advantages:

the invention adopts the multiple plungers to distribute along the circumference, the structure is compact, and the flow pulsation is small.

The parts of the invention are sequentially assembled and disassembled, and the assembly and maintenance are easy.

The plunger and the crosshead of the invention run in the plunger sleeve, the operation is safe, when the length of the sealing filler needs to be increased, the purpose can be achieved by increasing the length of the plunger sleeve, and the material of a hydraulic end is saved.

The plunger and the crosshead are sealed by respective sealing parts, the spacing distance is long, the separation is thorough, the leakage of a medium is reduced by arranging the secondary sealing assembly, and the medium is prevented from polluting the lubricating oil at the driving end by arranging the water isolating ring.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a top view of a valve-ported horizontal high-speed reciprocating pump with circumferentially distributed plungers according to one embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of the valve-fed horizontal high-speed reciprocating pump of FIG. 1 with circumferentially distributed plungers;

FIG. 3 is a schematic cross-sectional view of the valve-fed horizontal high-speed reciprocating pump of FIG. 2 with circumferentially distributed plungers, taken along line B-B;

Detailed Description

The present invention is further described in the following description with reference to specific embodiments and the accompanying drawings, wherein the details are set forth in order to provide a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms other than described herein, and it will be readily apparent to those skilled in the art that the invention is susceptible to considerable generalization and deduction without departing from the spirit of the invention and therefore the scope of the invention should not be limited by the contents of this specific embodiment.

Fig. 1 is a plan view of a valve-fed horizontal high-speed reciprocating pump with circumferentially distributed plungers according to an embodiment of the present invention, and fig. 2 is a schematic sectional view of the valve-fed horizontal high-speed reciprocating pump with circumferentially distributed plungers of fig. 1 taken along line a-a. As shown in fig. 2, the valve-valving horizontal high-speed reciprocating pump with circumferentially distributed plungers may include a drive shaft 1, a crosshead drive mechanism 2, a crosshead 3, a crosshead cylinder 4, a crosshead oil seal 5, a plunger 6, a plunger main seal assembly 7, a pump head 8, an inlet check valve 9, an outlet check valve 10, a pump inlet 11, and a pump outlet 12, wherein a plurality of crossheads 3 are uniformly arranged in a slide way of the crosshead cylinder 4 along the circumference of the center line of the drive shaft 1, the drive shaft 1 rotates along the center line of the drive shaft 1, the crosshead drive mechanism 2 drives the crosshead 3 to reciprocate, one crosshead oil seal 5, one plunger 6, one plunger main seal assembly 7, one inlet check valve 9, and one outlet check valve 10 are arranged corresponding to each crosshead 3, the crosshead oil seal 5 is arranged on the outer circumferential surface of the corresponding crosshead 3, the plungers 6 are arranged concentrically with the corresponding crosshead 3, one end of each plunger 6 is fixed with one end of the corresponding crosshead 3, the plunger main sealing assembly 7 is arranged on the outer circumferential surface of the corresponding plunger 6, the pump heads 8 are fixed with the crosshead cylinder 4, one plunger hole is arranged on one side of the crosshead cylinder 4 of each pump head 8 corresponding to each plunger 6, the plungers 6 are communicated with the corresponding plunger holes of the pump heads 8, the pump inlets 11 are communicated with the corresponding plunger holes of the pump heads 8 in a one-way mode through inlet one-way valves 9, the plunger holes of the pump heads 8 are communicated with the pump outlets 12 in a one-way mode through corresponding outlet one-way valves 10, the plungers 6 are consistent with the movement of the corresponding crosshead 3, the corresponding outlet one-way valves 10 are closed when the plungers 6 are in the suction stroke, the corresponding inlet one-way valves 9 are opened, the medium in the pump inlets 11 enters the corresponding plunger holes of the pump heads 8 through the corresponding inlet one-way valves 9, during the discharge stroke of the plunger 6, the corresponding inlet check valve 9 is closed, the corresponding outlet check valve 10 is opened, and the medium in the plunger bore of the corresponding pump head 8 is discharged through the corresponding outlet check valve 10 into the pump outlet 12.

The crosshead driving mechanism 2 may refer to patent 202010330128X, and the moving speed curve of the crosshead 3 is approximate to a sine curve, and the moving phase intervals of the adjacent crosshead 3 are the same.

When the number of the plungers 6 is more than or equal to 7 and is odd, the flow pulsation of the high-speed reciprocating fluid end is very small, and a pulsation damper is not needed.

The crosshead oil seal 5 seals the gear oil at the driving end, the plunger main seal assembly 7 seals the hydraulic end medium, and the two seals operate independently and cannot influence each other.

When the required flow parameters are changed, the crosshead 3 and corresponding drive end part are usually unchanged and the diameter of the plunger 6 is changed accordingly.

This horizontal high-speed reciprocating pump of valve flow distribution that plunger distributes along circumference can also include pump cover 13, pump cover clamp plate 14 and collection liquid recess 18, wherein cross head cylinder body 4, pump head 8, pump cover 13 arranges in proper order with pump cover clamp plate 14, entry check valve 9 and 10 levels of export check valve are arranged between pump head 8 and pump cover 13, pump cover 13 is opened at pump cover clamp plate 14 one side has album liquid recess 18, 8 plunger holes of pump head are through corresponding export check valve 10 and album liquid recess 18 one-way intercommunication, album liquid recess 18 and pump outlet 12 intercommunication, pump cover clamp plate 14 is pressed on album liquid recess 18, pump inlet 11 arranges the center at pump head 8.

The pump inlet 11 is arranged on the inlet connector 50, the inlet connector 50 is in threaded connection with the pump head 8, the inlet connector 50 compresses the inner side of the pump cover pressing plate 14, the outer side of the pump cover pressing plate 14 is fixed on the pump cover 13 through bolts, and the space between the pump cover 13 and the pump cover pressing plate 14 is sealed through an O-shaped ring.

The circumference of the inlet joint 50 is provided with a through hole, a certain gap is arranged between the pump head 8 and the pump cover 13, the circumference of the one-way valve body 52 is provided with a medium suction hole, and the pump inlet 11 is communicated with the valve core of the inlet one-way valve 9 through the through hole on the circumference of the inlet joint 50, the gap between the pump head 8 and the pump cover 13 and the medium suction hole on the circumference of the one-way valve body 52.

The check valve body 52 is provided with a medium discharge hole which is offset from the medium suction hole, and the plunger hole of the pump head 8 communicates with the valve element of the outlet check valve 10 through the medium discharge hole of the check valve body 52.

The valve-distribution horizontal high-speed reciprocating pump with circumferentially distributed plungers may further include plunger sleeves 15, one plunger sleeve 15 being disposed corresponding to each plunger 6, and the plunger sleeves 15 being fitted over the corresponding plungers 6 and the corresponding crosshead 3.

The plunger sleeve 15 has a protection effect, the plunger 6 in motion can be prevented from being injured by mistakenly touching the plunger by an operator, meanwhile, when the sealing length needs to be increased, the length of the plunger sleeve 15 only needs to be increased, the material of a hydraulic end can be saved, and when special materials are adopted, the saved material cost is very considerable.

The valve flow distribution horizontal high-speed reciprocating pump with the circumferentially distributed plungers further comprises a secondary sealing assembly 16 and a water stop ring 17, one secondary sealing assembly 16 and one water stop ring 17 are arranged corresponding to each plunger main sealing assembly 7, a sealing interval space between each secondary sealing assembly 16 and the corresponding plunger main sealing assembly 7 is communicated with the pump inlet 11, and the water stop ring 17 is arranged on one side, close to the corresponding crosshead 3, of the corresponding secondary sealing assembly 16.

Fig. 3 is a schematic sectional view of the valve-fed horizontal high-speed reciprocating pump of fig. 2, wherein the plungers are circumferentially arranged, along the line B-B. As shown in fig. 3, the space between all the plunger main seal assemblies 7 and the secondary seal assembly 16 is communicated with the pump inlet 11 through a hole in the middle of the inlet joint 50, so as to ensure that the space between all the plunger main seal assemblies 7 and the secondary seal assembly 16 is filled with a medium, and prevent the plunger 6 from dry rubbing with the secondary seal assembly 16 when the pump is started and burning the secondary seal assembly 16.

The vent valve 51 is disposed at the top of the pump head 8 to facilitate venting of gas from the pump head 8 prior to pump start.

The secondary seal assembly 16 seals the inlet pressure, the pressure is generally low, the service life is long, the time that the hydraulic end of the reciprocating pump does not have obvious external leakage is prolonged, and the user experience is good. The medium between the secondary seal assembly 16 and the plunger main seal assembly 7 can also play a role in lubricating and cooling the plunger main seal assembly 7.

The arrangement of the water isolating ring 17 can prevent the medium leaked from the secondary sealing assembly 16 from being blocked by the water isolating ring 17, and prevent the medium from mixing into the driving end to damage the quality of the gear oil.

The valve cores of the inlet check valve 9 and the outlet check valve 10 are consistent with the shape of the spring, so that the universality of spare parts is improved.

Compared with a vertical reciprocating pump, the horizontal reciprocating pump has the advantages of low gravity center, stability and convenience in maintenance. The hydraulic end and the driving end of the vertical reciprocating pump are vertically arranged, and the upper parts need to be firstly dismounted for repairing the lower parts, so that the maintenance is relatively unchanged.

The invention adopts the multiple plungers to distribute along the circumference, the structure is compact, and the flow pulsation is small. The shapes of all parts are regular, the processing and the manufacturing are simple, the whole hydraulic end is sequentially installed, and the installation and the maintenance are easy.

Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the invention, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.