阅读说明：本技术 一种新型双螺旋传动结构装置的往复泵 (Reciprocating pump with novel double-screw transmission structure device ) 是由 易李力 杨昭义 于 2021-09-14 设计创作，主要内容包括：本发明介绍了一种新型双螺旋传动结构装置的往复泵,包括：动力端和液力端,动力端与液力端相连进；动力端由曲轴箱箱体、曲轴组件、连杆滑块组件、小齿轮轴组件组成；小齿轮轴一端与驱动电机连接,一端与曲轴组件连接；曲轴组件和连杆滑块组件连接；曲轴组件、连杆滑块组件、小齿轮轴组件内嵌于曲轴箱箱体内；液力端装置包括柱塞、高压钢套、阀座、吸液阀芯、排液阀芯,阀座的一端与阀套平面接触,一端与泵头体接触；阀座内在柱塞往复运动相同方向设置吸液阀芯。本发明通过设计新型双螺旋传动结构装置的往复泵结构,解决了应力集中,泵头产生开裂等技术问题,达到了噪音低、节省劳动力、减少维修时间、体积小、传动范围小、成本低等技术效果。(The invention introduces a reciprocating pump of a novel double-helix transmission structure device, which comprises: the power end and the hydraulic end are connected with each other; the power end consists of a crankcase body, a crankshaft assembly, a connecting rod sliding block assembly and a pinion shaft assembly; one end of the pinion shaft is connected with the driving motor, and the other end of the pinion shaft is connected with the crankshaft assembly; the crankshaft assembly is connected with the connecting rod sliding block assembly; the crankshaft assembly, the connecting rod sliding block assembly and the pinion shaft assembly are embedded in the crankcase body; the hydraulic end device comprises a plunger, a high-pressure steel sleeve, a valve seat, a liquid suction valve core and a liquid discharge valve core, wherein one end of the valve seat is in contact with the plane of the valve sleeve, and the other end of the valve seat is in contact with the pump head body; and a liquid suction valve core is arranged in the valve seat in the same direction as the reciprocating motion of the plunger. The reciprocating pump structure of the novel double-helix transmission structure device is designed, so that the technical problems of stress concentration, pump head cracking and the like are solved, and the technical effects of low noise, labor force saving, maintenance time reduction, small size, small transmission range, low cost and the like are achieved.)

1. A novel reciprocating pump with a double-helix transmission structure device comprises: the power end and the hydraulic end are connected for power output; the power end includes: the crankshaft box body (1), the crankshaft assembly (2), the connecting rod sliding block assembly (3) and the pinion shaft assembly (4); one end of the pinion shaft assembly (4) is connected with the driving motor, and the other end of the pinion shaft assembly is connected with the crankshaft assembly (2); the crankshaft assembly (2) is connected with the connecting rod sliding block assembly (3); the crankshaft assembly (2), the connecting rod sliding block assembly (3) and the pinion shaft assembly (4) are embedded in the crankcase body (1).

2. The reciprocating pump of the novel double-helix transmission structure device as claimed in claim 1, wherein the number of the connecting rod sliding block assemblies (3) is multiple.

3. The reciprocating pump of the novel double-helix transmission structure device is characterized in that the crankcase body (1) comprises an upper cover (5) and a body seat (6), and the upper cover (5) can be perforated according to actually combined devices.

4. The reciprocating pump of the novel double-helix transmission structure device according to claim 3, wherein the crankshaft assembly (2) comprises a crankshaft (7), a helical gear (8), a bearing (9) and a bearing cap (10), the bearing caps (10) are arranged at two ends of the crankshaft assembly (2), the helical gear (8), the bearing (9) and the helical gear (8) are sequentially arranged at a certain interval in the middle, the bearing (9) can be additionally arranged in the middle according to needs, the interval is increased, and the crankshaft is equally divided at the interval in the middle according to 360 degrees.

5. The reciprocating pump of the novel double-helix transmission structure device as claimed in claim 4, wherein the connecting rod sliding block component (3) comprises a connecting rod (11) and a sliding block (12), a round hollow part is reserved at one end of the connecting rod, and the radius is set to be the radius of the crankshaft (7) and clamped at the middle interval of the crankshaft (7).

6. The reciprocating pump of the novel double-helix transmission structure device according to claim 5, wherein the pinion shaft assembly (4) comprises an end cover (13), a bearing (9), a gear (14) and a bearing (9), the gear (14), the bearing and the gear (14) are sequentially arranged in the middle at a certain interval, the bearing (9) and the gear (14) can be additionally arranged as required, and the end covers (13) are arranged at two ends.

7. The reciprocating pump of the novel double-helix transmission structure device according to any one of claims 1 to 6, characterized in that the hydraulic end device comprises a plunger (15), a high-pressure steel sleeve (16), a valve seat (17), a liquid suction valve core (18) and a liquid discharge valve core (19), the liquid suction valve core (18) which slides in the same direction as the reciprocating motion of the plunger (15) in the valve seat (17), one end of the valve seat (17) is in contact with a valve sleeve plane and forms a working cavity around the liquid suction valve core (18), the other end of the valve seat (17) is in contact with a pump head body and forms a high-pressure cavity outlet around the liquid discharge valve core (19), and the high-pressure steel sleeve (16), the valve sleeve (20), the valve seat (17) and the pump head body (21) form a linear installation structure.

8. The reciprocating pump of the novel double-helix transmission structure device as claimed in claim 7, wherein the number of the hydraulic end devices is set according to the number of the connecting rod sliding block assemblies.

9. The reciprocating pump of a new double helix drive structure device according to claim 8, characterized in that the suction spool includes a drum main body portion (22) defining a flow path and an umbrella valve portion (23) extending behind the drum main body, and the liquid discharge spool (19) is mounted on the front end of the drum main body portion (22) of the suction spool (18).

10. The reciprocating pump of the novel double-helix transmission structure device as claimed in any one of claims 1 to 9, wherein the high-pressure steel sleeve (16) is connected with the valve sleeve (20) in a nested manner, the valve sleeve (20) is connected with the valve seat (17) in a nested manner, the valve seat (17) is connected with the pump head in a nested manner, the liquid inlet pipe (24) sequentially passes through the interior of the pump head and the valve seat (17), the umbrella-shaped part is connected with the plunger through a liquid suction valve spring (25), the liquid discharge valve core is connected with a limit screw (27) through a liquid discharge valve spring (26), and the limit screw (27) is tightly connected with the pump head body (21).

Technical Field

The invention belongs to the field of design of reciprocating pumps in a coal mine extreme environment, and particularly relates to a novel reciprocating pump with a double-spiral transmission structure device.

Background

A hydraulic system of a reciprocating pump on a fully mechanized coal mining face is important equipment in underground production of a coal mine, and is a heart of a hydraulic support system and a liquid supply system, and the hydraulic support is used for cutting coal immediately along with a coal cutter and moving in a follow-up manner in time so as to ensure that a top plate of the working face supports a coal bed and is normally pushed; the liquid supply system provides power for the hydraulic support system, and the main core of the liquid supply system is a reciprocating pump.

The underground coal mine is compared with the previous generations. Higher support force, larger strut diameter and faster advancement speed are required. These holding forces and speeds are achieved depending on the performance of the reciprocating pump. With the development of the national 'intellectualization' and 'digitalization', the concept of 'human' center is adopted. The requirements for improving energy utilization rate and noise are stricter and stricter, and along with the limited underground space, the requirements for the compact structure of equipment are higher and higher.

The prior reciprocating pump for underground equipment adopts a reciprocating pump of a single-stage speed reduction device, the noise of the reciprocating pump is over 130dB through the tested data, the efficiency of emulsion is low, the prior reciprocating pump is difficult to meet the requirement of noise (85dB) when in operation, and the cross head of a transmission part of the prior reciprocating pump is asymmetrical when a plunger moves, so that the strong vibration is caused, and the noise reduction is difficult to realize without a damping element.

The design of reciprocating pump is many, like a plunger reciprocating pump that chinese patent CN204692076U announced, still relate to a plunger reciprocating pump system, the utility model provides a plunger reciprocating pump and system thereof, contain the pipe in this plunger reciprocating pump, plunger reciprocating pump system has disposed the filling pump, has broken through the entry and has been responsible for, and entry and outlet valve ball can freely move on the disk seat to solved the inside easy deposit of reciprocating pump when the pumping medium and blockked up the technological problem, this plunger reciprocating pump can satisfy the requirement of carrying high temperature, high pressure, high solid content and high viscosity medium on devices such as coal industry, coal system oil and coal-oil smelts altogether conscientiously. The technical scheme for solving the technical problem is as follows: the utility model provides a plunger reciprocating pump, includes the pump body, and the upper portion of the pump body is equipped with the export, and the lower part of the pump body is equipped with the entry, contains the pump chamber in the pump body, contains the pipe in this pump chamber, and the lower extreme of pipe is towards the pump body the entry, the upper end and the pump body of pipe the export intercommunication, plunger reciprocating pump still includes the plunger that can send the pumping medium in this pump chamber into the pipe. Although the requirements of conveying high-temperature, high-pressure, high-solid content and high-viscosity media on devices such as coal chemical industry, coal-to-liquid and kerosene co-refining devices can be met practically, the single-stage reduction gear device commonly used at present is still adopted, and the single-stage reduction gear device has the advantages of high noise, low utilization rate and large integral volume in the process of operation at present.

A novel high-pressure reciprocating pump as chinese patent CN202441556U discloses, including stop valve, pipeline centrifugal pump, chassis, delivery port joint, flowmeter, filter, manometer, check valve, right angle joint, motor, shaft coupling, overflow valve, hydraulic end, air-vent valve, power end and lubricating arrangement, the motor passes through the screw fixation on the chassis, the motor passes through coupling joint power end, the front portion of power end is hydraulic end, hydraulic end left side is equipped with the air-vent valve, and the right side is equipped with the overflow valve, the overflow valve passes through right angle joint connection check valve, the check valve right side is equipped with manometer and stop valve and connects flowmeter and delivery port, pipeline centrifugal pump left side is equipped with the filter and passes through metal pipe connection hydraulic end.

Preferably, a lubricating device is arranged on one side of the power end. The power end adopts forced lubrication, the transmission is stable and reliable, the friction coefficient is reduced, the lubricity is improved, the temperature rise of the power end is low, and the power end is suitable for long-time continuous operation and the like. However, a single-stage reduction gear device is still adopted, and the hydraulic end of the emulsion pump still adopts a split pump head, so that the assembly and disassembly are difficult.

At present, most of reciprocating pumps commonly used in the market or underground have single-stage reduction gear devices, have high noise, low utilization rate and large integral volume, adopt split pump heads, are difficult to disassemble and assemble, and are even not suitable for being used in the field of high pressure and high flow rate.

Disclosure of Invention

In order to solve the problems, the size of the reciprocating pump is reduced, the structure of the reciprocating pump is simplified, the flow channel is reasonably designed, the reciprocating pump can be used in a high-pressure large-flow range, and the technical effects of low noise, low failure rate, convenience in disassembly and assembly and low maintenance cost are achieved.

In order to achieve the effect, the invention designs a novel reciprocating pump with a double-helix transmission structure device.

A novel reciprocating pump with a double-helix transmission structure device comprises: the power end and the hydraulic end are connected for power output; the power end consists of a crankcase body, a crankshaft assembly, a connecting rod sliding block assembly and a pinion shaft assembly; one end of the pinion shaft assembly is connected with the driving motor, and the other end of the pinion shaft assembly is connected with the crankshaft assembly; the crankshaft assembly is connected with the connecting rod sliding block assembly; the crankshaft assembly, the connecting rod sliding block assembly and the pinion shaft assembly are embedded in the crankcase body.

Preferably, the number of the connecting rod sliding block assemblies is multiple groups.

Preferably, the crankcase body consists of an upper cover and a body seat, and the upper cover can be provided with holes according to actually combined devices.

Preferably, the crankshaft assembly consists of a crankshaft, helical gears, bearings and bearing caps, the bearing caps are arranged at two ends of the crankshaft assembly, the helical gears, the bearings and the helical gears are sequentially arranged at intervals in the middle, the bearings can be added in the crankshaft assembly according to needs, the intervals are increased, and the crankshaft at the intervals in the middle is equally divided according to 360 degrees. .

Preferably, the connecting rod sliding block assembly consists of a connecting rod and a sliding block, wherein a round hollow part is reserved at one end of the connecting rod, the radius of the connecting rod is set to be the radius of a crankshaft, and the connecting rod sliding block assembly is clamped at the middle interval of the crankshaft.

Preferably, the pinion shaft assembly comprises end covers, bearings, gears and bearings, the gears, the bearings and the gears are sequentially arranged in the middle at certain intervals, and the bearings and the end covers are arranged at the two ends of the gears as required, so that a multi-spiral structure is realized.

Preferably, the hydraulic end device comprises a plunger, a high-pressure steel sleeve, a valve seat, a liquid suction valve core and a liquid discharge valve core, wherein the liquid suction valve core slides in the same direction as the plunger in a reciprocating motion mode in the valve seat, one end of the valve seat is in contact with a valve sleeve plane and forms a working cavity around the liquid suction valve core, the other end of the valve seat is in contact with a pump head body and forms a high-pressure cavity outlet around the liquid discharge valve core, and the high-pressure steel sleeve, the valve seat and the pump head body form a linear installation structure.

Preferably, the number of the hydraulic end devices is set according to the number of the connecting rod sliding block assemblies.

Preferably, the suction spool includes a drum-shaped main body portion defining the flow path and an umbrella-shaped valve portion extending behind the drum-shaped main body, and the liquid discharge spool is mounted to a front end of the drum-shaped main body portion of the suction spool.

Preferably, the high-pressure steel sleeve is connected with the valve sleeve in a nested mode, the valve sleeve is connected with the valve seat in a nested mode, the valve seat is connected with the pump head in a nested mode, the liquid inlet pipe sequentially passes through the interior of the pump head and the interior of the valve seat, the umbrella-shaped portion is connected with the plunger through the liquid suction valve spring, the liquid discharge valve core is connected with the limiting screw through the liquid discharge valve spring, and the limiting screw is fixedly connected to the pump head body.

The application has the advantages and effects as follows:

1. the reciprocating pump product of the novel double-screw transmission structure device adopts a linear structure, is convenient to disassemble and assemble, greatly reduces the labor intensity of workers in the underground coal mine extreme environment, and reduces the maintenance time and the maintenance frequency of the product.

2. The reciprocating pump of the novel double-screw transmission structure device has the advantages of fewer parts, low price, high product value, small transmission ratio range, stable operation, low noise, long service life and reliable product.

3. The novel double-spiral transmission structure designed by the invention has the advantages of compact structure of the power end, small volume and small pulsation, and solves the problems of stress concentration and cracking of the pump head.

4. The invention designs the linear structure arrangement of the hydraulic end, and has low use cost at medium flow rate.

5. Adopt double helix transmission structure, can be better carry out power transmission, solved the not enough problem of reciprocating pump power before, adopt multiunit link assembly and multiunit fluid end design, the power that will be originally has enlarged the multiunit from a set of, can make novel double helix transmission structure reciprocating pump power stronger, has reduced the possibility that reciprocating pump received the external environment influence.

The foregoing description is only an overview of the technical solutions of the present application, so that the technical means of the present application can be more clearly understood and the present application can be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the present application more clearly understood, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of the operation of a reciprocating pump;

FIG. 2 is a front view of the reciprocating pump of the novel double-helix transmission structure device provided by the invention

FIG. 3 is a top view of the power end of the reciprocating pump of the novel double-helix transmission structure device provided by the invention;

FIG. 4 is a diagram of a reciprocating pump casing of the novel double-helix transmission structure device provided by the invention;

FIG. 5 is a diagram of a crankshaft assembly of a reciprocating pump of the novel double-helix transmission structure device;

FIG. 6 is a view of a reciprocating pump pinion shaft assembly of the novel double helix transmission structure device provided by the invention;

FIG. 7 is a drawing of a hydraulic end device of a reciprocating pump of a novel double-helix transmission structure device provided by the invention;

fig. 8 is a sectional view of a connecting rod assembly of a reciprocating pump of the novel double-helix transmission structure device provided by the invention.

Reference numerals: 1. a crankcase body; 2. a crankshaft assembly; 3. a connecting rod slider assembly; 4. a pinion shaft assembly; 5. an upper cover; 6. a case base; 7. a crankshaft; 8. a helical gear; 9. a bearing; 10. a bearing cap; 11. a connecting rod; 12. a slider; 13. an end cap; 14. a gear; 15. a plunger; 16. high-pressure steel sleeves; 17. a valve seat; 18. a liquid suction valve core; 19. a liquid discharge valve core; 20. a valve housing; 21. a pump head body; 22. a drum shaped body portion; 23. an umbrella valve portion; 24. a liquid inlet pipe; 25. a liquid suction valve spring; 26. a drain valve spring; 27. and a limiting screw.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted in the embodiments for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "the embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrase "one embodiment" or "the present embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Further, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.

The term "at least one" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, at least one of a and B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.

Example 1

The present embodiment mainly describes the working principle of the reciprocating pump.

Referring to fig. 1, fig. 1 is a schematic diagram of a reciprocating pump.

The reciprocating pump is driven by a motor, the crankshaft is driven to rotate through gear reduction, the crank throw drives the two banks to make the sliding block and the plunger piston do reciprocating motion when rotating, so that working fluid is sucked and discharged through the suction and liquid discharge one-way valve in the pump head, electric energy is converted into mechanical energy, the mechanical energy is converted into hydraulic energy, and the output pressure fluid is supplied to the working face hydraulic support to work.

The embodiment simply introduces the operation principle of the reciprocating pump, and is convenient for understanding the structure of the reciprocating pump of the novel double-helix transmission structure device.

Example 2

Based on the above embodiment 1, the present embodiment mainly introduces the structure of the reciprocating pump of the novel double helix transmission structure device.

Referring to fig. 2-8, fig. 2 is a front view of a reciprocating pump of a novel double-screw transmission structure device according to the present invention;

FIG. 3 is a top view of the power end of the reciprocating pump of the novel double-helix transmission structure device provided by the invention; FIG. 4 is a diagram of a reciprocating pump casing of the novel double-helix transmission structure device provided by the invention; FIG. 5 is a diagram of a crankshaft assembly of a reciprocating pump of the novel double-helix transmission structure device; FIG. 6 is a view of a reciprocating pump pinion shaft assembly of the novel double helix transmission structure device provided by the invention; FIG. 7 is a drawing of a hydraulic end device of a reciprocating pump of a novel double-helix transmission structure device provided by the invention; fig. 8 is a sectional view of a connecting rod assembly of a reciprocating pump of the novel double-helix transmission structure device provided by the invention.

It has demonstrated a novel reciprocating pump of double helix transmission structure device, includes: the power end and the hydraulic end are connected for power output; the power end consists of a crankcase body 1, a crankshaft assembly 2, a connecting rod 11, a sliding block 12 assembly 3 and a pinion shaft assembly 4; one end of the pinion shaft is connected with the driving motor, and the other end of the pinion shaft is connected with the crankshaft assembly 2; the crankshaft assembly 2 is connected with the connecting rod 11, the sliding block 12 and the assembly 3; the crankshaft assembly 2, the connecting rod 11, the sliding block 12 assembly 3 and the pinion shaft assembly 4 are embedded in the crankcase body 1.

Furthermore, the crankcase body 1 consists of an upper cover 5 and a body seat 6, and the upper cover 5 can be perforated according to actually combined devices.

Furthermore, the pinion shaft assembly 4 is composed of an end cover 13, a bearing 9, a gear shaft and a bearing 9, the middle of the pinion shaft assembly is sequentially arranged into a gear 14, the bearing 9 and the gear 14 at a certain interval, and the end covers 13 are arranged at two ends of the pinion shaft assembly.

Furthermore, the hydraulic end device comprises a plunger 15, a high-pressure steel sleeve 16, a valve seat 17, a liquid suction valve core 18 and a liquid discharge valve core 19, wherein the liquid suction valve core 18 slides in the same direction as the plunger 15 in the valve seat 17 in a reciprocating motion, one end of the valve seat 17 is in plane contact with the valve sleeve 20 and forms a working cavity around the liquid suction valve core 18, the other end of the valve seat 17 is in contact with the pump head body 21 and forms a high-pressure cavity outlet around the liquid discharge valve core 19, and the high-pressure steel sleeve, the valve sleeve 20, the valve seat 17 and the pump head body 21 form a linear installation structure.

Further, the suction spool 18 includes a drum-shaped main body portion 22 defining a flow path and an umbrella-shaped valve portion 23 extending rearward of the drum-shaped main body, and the discharge spool 19 is mounted to the front end of the drum-shaped main body portion 22 of the suction spool 18.

Furthermore, the high-pressure steel sleeve 16 is connected with the valve sleeve 20 in a nested mode, the valve sleeve 20 is connected with the valve seat 17 in a nested mode, the valve seat 17 is connected with the pump head in a nested mode, the liquid inlet pipe 24 sequentially passes through the interior of the pump head and the valve seat 17, the umbrella-shaped portion is connected with the plunger 15 through the liquid suction valve spring 25, the liquid discharge valve core 19 is connected with the limiting screw 27 through the liquid discharge valve spring 26, and the limiting screw 27 is fixedly connected to the pump head body 21.

The reciprocating pump product of the novel double-screw transmission structure device adopts an integrated linear structure, is convenient to disassemble and assemble, greatly reduces the labor intensity of workers in the underground coal mine extreme environment, and reduces the maintenance time and the maintenance frequency of the product.

The reciprocating pump of the novel double-screw transmission structure device has the advantages of fewer parts, low price, high product value, small transmission ratio range, stable operation, low noise, long service life and reliable product.

Example 3

Based on the above embodiment 2, this embodiment mainly introduces the innovation of the reciprocating pump power end of the novel double-helix transmission structure device.

Referring to fig. 3, fig. 5 and fig. 8, fig. 3 is a top view of a power end of a reciprocating pump of a novel double-helix transmission structure device provided by the present invention; FIG. 5 is a diagram of a crankshaft assembly of a reciprocating pump of the novel double-helix transmission structure device;

fig. 8 is a sectional view of a connecting rod assembly of a reciprocating pump of the novel double-helix transmission structure device provided by the invention.

A novel reciprocating pump with a double-helix transmission structure device comprises: the power end and the hydraulic end are connected for power output; the power end consists of a crankcase body 1, a crankshaft assembly 2, a connecting rod 11, a sliding block 12 assembly 3 and a pinion shaft assembly 4; one end of the pinion shaft is connected with the driving motor, and the other end of the pinion shaft is connected with the crankshaft assembly 2; the crankshaft assembly 2 is connected with the connecting rod 11, the sliding block 12 and the assembly 3; the crankshaft assembly 2, the connecting rod 11, the sliding block 12 assembly 3 and the pinion shaft assembly 4 are embedded in the crankcase body 1.

Furthermore, the crankshaft assembly 2 is composed of a crankshaft 7, a helical gear 8, a bearing 9 and a bearing cap 10, the bearing caps 10 are arranged at two ends of the crankshaft assembly 2, and the bearing 9, the helical gear 8, the bearing 9, the helical gear 8 and the bearing 9 are sequentially arranged in the middle at a certain interval.

Further, the number of the connecting rod sliding block assemblies is 5.

Further, connecting rod 11 slider 12 subassembly 3 constitute by connecting rod 11 and slider 12, connecting rod 11 one end leaves circular cavity, and the radius sets up to bent axle 7 radius, block with in bent axle 7 middle interval department, because bent axle 7's unique shape, can drive 5 groups connecting rod 11 (two liang of connecting rod angle difference 72 °) hollow one end and carry out 360 rotations around bent axle 7 center, and then drive slider 12 and slide.

Further, the number of the hydraulic end devices is set to be 5.

Reciprocating pump adopts double helix transmission structure, can be better carry out power transmission, has solved the not enough problem of reciprocating pump power before, adopts 5 connecting rod 11 subassemblies of group and 5 hydraulic end designs, has enlarged 5 from one to the power originally, can make novel double helix transmission structure reciprocating pump power stronger, has reduced reciprocating pump and has received the possibility of external environment influence.

The flow velocity in the hydraulic end is reduced by adopting 5 groups of connecting rod 11 components and 5 groups of hydraulic end structures and applying linear structure arrangement, so that the cost is reduced and the power is increased; the final stress is concentrated, and the technical effect that the pump head is not cracked and the power is doubled is achieved.

The above description is only a preferred embodiment of the present invention, and it is not intended to limit the scope of the present invention, and various modifications and changes may be made by those skilled in the art. Variations, modifications, substitutions, integrations and parameter changes of the embodiments may be made without departing from the principle and spirit of the invention, which may be within the spirit and principle of the invention, by conventional substitution or may realize the same function.