Slurry pump power end shell

Abstract

The utility model relates to the technical field of slurry pumps, and provides a slurry pump power end shell which comprises a gear reduction box, the gear reduction box comprises a bearing seat, and the bearing seat is arranged in the shell in a welded mode. By means of the technical scheme, the problems that in the prior art, a power end shell of a slurry pump is complex in process, high in material consumption and large in weight are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mud pump, specifically, and relates to a mud pump power end shell. BACKGROUND

[0002] In the early design of mud pump power end shell, more attention is usually paid to ensuring strength and rigidity to meet the working requirements. For example, the bearing seat is usually made of casting structure, because the casting process has certain advantages in forming complex shapes and parts requiring high strength. The main purpose is to ensure that the power end can stably support the key components such as bearings during the operation of the mud pump, and to ensure the accuracy and stability of power transmission. At the same time, the design of the guide plate seat also mainly considers that it can bear various loads in work, so the optimization of weight and cost may not be the primary consideration.

[0003] With the development of technology and further consideration of comprehensive factors such as equipment performance and cost, the bearing seat of the casting structure has a series of problems at the present stage:

[0004] (1) Complex processing technology. Taking the bearing seat of the casting structure as an example, the casting process involves multiple complex links such as mold making, melting and cooling. The design and manufacture of the mold need high precision to ensure the size precision and surface quality of the bearing seat. Moreover, the parts after casting may need a lot of subsequent machining, such as mechanical machining, to achieve the designed size and precision, which makes the whole processing technology complex and time-consuming.

[0005] (2) More materials and heavier weight. The bearing seat of the casting structure and the relatively thick guide plate seat usually need more materials to manufacture. This not only increases the material cost, but also the heavy power end shell will also bring a burden to the overall weight of the mud pump. In some cases where the equipment needs to be moved or installed, the over-heavy equipment will increase the transportation cost and installation difficulty.

[0006] (3) High processing cost. Due to the complexity of the casting process itself, including equipment investment, energy consumption and labor cost and many other factors, the processing cost of the bearing seat with casting structure is high. Moreover, the complex processing technology is also prone to increase the scrap rate, further increasing the cost.

[0007] In summary, the mud pump power end shell needs to be improved, so as to realize the simplification of processing technology, the reduction of material consumption and weight, the saving of cost and many other goals without affecting the strength and rigidity. CONTENT OF THE UTILITY MODEL

[0008] The utility model provides a mud pump power end shell, which solves the problem of complex process, high material consumption and heavy weight of the power end shell of the mud pump in the related art.

[0009] The technical scheme of the utility model discloses

[0010] A mud pump power end shell, including gear reduction box, gear reduction box including bearing seat, bearing seat set in the shell.

[0011] As a further technical scheme, the bearing seat is welded or cast, and the bearing seat includes,

[0012] The driving shaft bearing seat is arranged in the shell.

[0013] The crankshaft bearing seat is arranged in the shell and located on one side of the driving shaft bearing seat.

[0014] The crankshaft bearing gland is arranged on the crankshaft bearing seat.

[0015] As a further technical scheme, the bearing seat further includes,

[0016] The rib plate is arranged in the shell and used for supporting the driving shaft bearing seat and the crankshaft bearing seat.

[0017] As a further technical scheme, the crankshaft bearing seat has a square edge.

[0018] As a further technical scheme, the crankshaft bearing gland is fixed on the crankshaft bearing seat through bolts.

[0019] As a further technical scheme, the crankshaft bearing gland has a square edge.

[0020] As a further technical scheme, the bearing seat is welded, and the driving shaft bearing seat, the crankshaft bearing seat and the rib plate are welded in the shell,

[0021] As a further technical scheme, the rib plate has a plurality of rib plates and is arranged in a direction parallel to the center line of the crankshaft bearing seat.

[0022] As a further technical scheme, the bearing seat further includes,

[0023] The oil inlet oil conveying main pipe is arranged in the shell.

[0024] The oil pool is arranged below the oil inlet oil conveying main pipe and at the bottom of the gear reduction box.

[0025] The oil suction port filter core cover is arranged on the wall plate on one side of the oil pool.

[0026] As a further technical scheme, the crosshead guide plate box and the pull rod box are sequentially arranged in the shell with the gear reduction box.

[0027] The working principle and beneficial effects of the utility model are as follows:

[0028] In the utility model, the bearing seat installation mode is changed, the processing technology is simplified, and the shell weight is reduced without affecting the strength and rigidity of the power end shell.

[0029] Specifically, the first structure is that the bearing seats are welded, that is, the driven shaft bearing seat, the crankshaft bearing seat and the rib plate are all welded in the shell. The driven shaft bearing seat is made of high-quality steel and is accurately arranged in the corresponding position in the shell through the welding process. The size and shape thereof are designed according to the installation requirements of the driven shaft to ensure the stable support and accurate transmission of the driven shaft during operation. The crankshaft bearing seat is also made of appropriate steel and has a square edge design. The square edge structure enhances the local strength and stability thereof. The crankshaft bearing seat is welded and fixed on one side of the driven shaft bearing seat in the shell to provide a reliable support point for the crankshaft and ensure the stability and reliability of the crankshaft during operation, effectively reducing vibration and wear. The crankshaft bearing gland is also made of steel and has a square edge. The crankshaft bearing gland is firmly fixed on the crankshaft bearing seat through bolts and tightly cooperates with the crankshaft bearing seat to play a good sealing and fastening role on the crankshaft bearing, preventing lubricating oil from leaking and ensuring the normal lubrication and working environment of the bearing.

[0030] The second structure is different from the first structure in that the bearing seat part adopts a casting structure and part adopts a welding structure. For example, the main part of the driven shaft bearing seat and the crankshaft bearing seat is made by casting to meet the preliminary forming requirements of the complex shape and high strength. Then, the rib plate is connected with the driven shaft bearing seat and the crankshaft bearing seat through welding and is integrally fixed in the shell. This mixed structure mode of casting and welding combines the advantages of casting and welding to some extent. For some parts with complex shape and high strength requirements, casting is used to ensure the basic shape and performance thereof, and welding is used for the auxiliary support structure such as the rib plate, which can simplify the overall processing technology, reduce the consumption materials and weight to some extent, and also reduce the processing cost.

[0031] The two structures described above can use the box-type rib plate structure to ensure the strength of the rack and modify the light weight of the guide plate seat to ensure the strength and save the cost. BRIEF DESCRIPTION OF DRAWINGS

[0032] The above-mentioned features, technical characteristics, advantages and implementation modes of the utility model will be further described in the following in a clear and understandable manner in combination with the preferred embodiments and the attached drawings.

[0033] Figure 1 It is a top view structural schematic diagram of the utility model;

[0034] Figure 2 It is Figure 1Schematic diagram of sectional structure along A-A direction;

[0035] Figure 3 Schematic diagram of three-dimensional structure of the utility model;

[0036] In the figure: 1, shell, 100, gear reduction box, 101, bearing seat, 102, driving shaft bearing seat, 103, crank bearing seat, 104, crank bearing gland, 105, rib plate, 106, oil inlet oil main pipe, 107, oil pool, 108, oil suction filter core cover, 200, cross head guide plate box, 201, guide plate seat, 300, pull rod box, 301, board, 302 front bottom plate. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, specific implementation manners of the utility model will be described below with reference to the drawings. Obviously, the drawings in the following description only some embodiments of the utility model, for those skilled in the art, without creative effort, other drawings can also be obtained according to these drawings, and other implementation manners can also be obtained.

[0038] In order to make the drawing simple, only the part related to the utility model is shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0039] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] As Figures 1-3As shown, a mud pump power end housing is provided, which comprises a gear reduction box 100, the gear reduction box 100 comprises a bearing seat 101, the bearing seat 101 is arranged in the housing 1. Further, the bearing seat 101 is welded or cast, the bearing seat 101 is a symmetrical structure, and there is a group on the left and right in the housing 1, which is arranged on the wall plate; the bearing seat 101 comprises a driving shaft bearing seat 102, which is arranged in the housing 1; a crankshaft bearing seat 103 is arranged in the housing 1 and located on one side of the driving shaft bearing seat 102; a crankshaft bearing cover 104 is arranged on the crankshaft bearing seat 103. Further, the bearing seat 101 further comprises a rib plate 105, which is arranged in the housing 1 and used for supporting the driving shaft bearing seat 102 and the crankshaft bearing seat 103.

[0042] In the embodiment, in order to solve the problems of complex process, high material consumption and large weight of the power end housing of the mud pump in the related art, the existing bearing seat installation mode is changed, the machining process is simplified, and the material consumption and the weight of the housing are reduced without affecting the strength and rigidity of the power end housing.

[0043] Specifically, the first structure is that the bearing seat is welded, that is, the driving shaft bearing seat 102, the crankshaft bearing seat 103 and the rib plate 105 are all welded in the housing. The driving shaft bearing seat 102 is made of high-quality steel and is accurately arranged in the corresponding position in the housing by welding process, the size and shape of which are designed according to the installation requirements of the driving shaft, so as to ensure the stable support and accurate transmission of the driving shaft during operation. The crankshaft bearing seat 103 is also made of appropriate steel and has a square edge design, which enhances the local strength and stability. It is welded and fixed in the housing on one side of the driving shaft bearing seat 102 to provide a reliable support point for the crankshaft, ensure the stability and reliability of the crankshaft during operation, and effectively reduce vibration and wear. The crankshaft bearing cover 104 is also made of steel and has a square edge, which is firmly fixed on the crankshaft bearing seat 103 by bolts and closely cooperates with the crankshaft bearing seat 103 to play a good sealing and fastening role on the crankshaft bearing, prevent lubricating oil leakage, and ensure normal lubrication and working environment of the bearing.

[0044] The second structure is different from the first structure in that the bearing seat part is made of a cast structure and part is made of a welded structure. For example, the main body part of the main shaft bearing seat 102 and the crankshaft bearing seat 103 is made of casting to meet the preliminary forming requirements of the complex shape and high strength, and then the rib plate 105 is connected with the main shaft bearing seat 102 and the crankshaft bearing seat 103 by welding and is fixed in the shell 1 as a whole. The mixed structure of casting and welding combines the advantages of casting and welding to some extent. For some parts with complex shape and high strength requirement, casting is used to ensure the basic shape and performance, and welding is used for the auxiliary support structure such as the rib plate 105, which can simplify the overall processing technology, reduce the material consumption and weight to some extent, and also reduce the processing cost.

[0045] Both the above two structures can use the box type rib plate 105 structure to ensure the strength of the rack and modify the lightweight guide plate seat 201 to ensure the strength and save the cost.

[0046] Further, the crankshaft bearing seat 103 has a square edge.

[0047] In the embodiment, the crankshaft bearing seat 103 has a square edge design. The original circular edge is cast and processed, and the discontinuous circular edge needs to be manually polished, which is time-consuming and laborious. The square edge is changed to use thick steel plate blanking, which is to solve the problem of uneven burr on the edge of laser blanking, especially for thicker plate, which must be trimmed. The design of square edge only needs milling processing, which is more simple and convenient.

[0048] Further, the crankshaft bearing cover 104 is fixed on the crankshaft bearing seat 103 by bolts. Further, the crankshaft bearing cover 104 has a square edge.

[0049] In the embodiment, the crankshaft bearing cover 104 is firmly fixed on the crankshaft bearing seat 103 by bolts, and the crankshaft bearing cover 104 also has a square edge, which is the same as the square edge of the crankshaft bearing seat 103.

[0050] Further, the bearing seat 101 is welded, the main shaft bearing seat 102, the crankshaft bearing seat 103 and the rib plate 105 are welded in the shell 1,

[0051] Further, the rib plate 105 has a plurality of rib plates, which are arranged in the direction of the center line of the crankshaft bearing seat 103 or parallel to the center line.

[0052] In this embodiment, a plurality of ribs 105 are arranged in the housing along the center line of the crankshaft bearing seat 103 in parallel direction to support the main shaft bearing seat 102 and the crankshaft bearing seat 103. The presence of these ribs 105 significantly enhances the overall rigidity of the bearing seat, enabling it to withstand greater loads and vibrations, ensuring the reliability of the mud pump under long-term high-intensity operation. For example, in actual operation, when the mud pump is subjected to a larger impact force, the ribs 105 can effectively disperse the stress, preventing the bearing seat from deforming or being damaged.

[0053] Further, the bearing seat 101 also includes an oil inlet main pipe 106 arranged in the housing 1; an oil pool 107 is fully welded on all sides and located below the oil inlet main pipe 106 and at the bottom of the gear reduction box 100; an oil suction filter core cover 108 is arranged on the wall plate on one side of the oil pool 107.

[0054] In this embodiment, the oil pool 107 includes a bottom oil pool 107, a sedimentation tank, and a crosshead upper oil pool 107. The bottom oil pool 107 is a sunken structure composed of left and right side plates and a bent inclined bottom plate, fully welded on all sides, located at the bottom of the gear reduction box 100, below the power end housing foot plate, and at the lowest point of the central end. An oil drain plug is provided, and an oil level gauge is provided on the back baffle. The sedimentation tank is composed of left and right wall plates, a bottom horizontal rib, and an oil gauge inner baffle, used to collect lubricating oil flowing from the crosshead guide plate box 200, where impurities are deposited. The dirty oil can be periodically drained through the screw plugs on the left and right wall plates for easy maintenance. The crosshead upper oil pool 107 is composed of the upper plate of the crosshead guide plate box 200, the inclined upper cover plate of the power end housing, and the oil baffle, which can collect lubricating oil splashed by the gear meshing in the gear reduction box 100. The upper plate has a circular pipe passing through and welded to it, with the position pointing to the corresponding oil hole of the crosshead guide plate, used to guide the lubricating oil splashed into the oil pool 107 and the lubricating oil discharged by the pressure lubrication system to the crosshead.

[0055] The oil suction filter core cover 108 is used to connect the oil suction pipeline in the pressure lubrication oil circuit and is composed of two sealed pipe threaded joints and a flange plate welded together. It uses oil-resistant rubber gasket for sealing and makes the contact surface of the gasket flush to improve smoothness. It is connected and fixed to the wall plate by an internal hexagonal screw, and the threaded fixing hole is a blind hole.

[0056] The oil inlet main pipe 106 is used to connect the oil discharge pipeline in the pressure lubrication oil circuit and the lubricating oil branch pipeline leading to each lubrication point. It is composed of a circular pipe with a sealed pipe thread and two baffle plates welded together, located above the crosshead guide plate box 200, and passing through and welded to the wall plate.

[0057] The oil receiving box is formed by stamping or welding thin steel plates and is fixed by threaded connection at the bottom side of the main shaft bearing seat 102 and the top of the crankshaft bearing cover 104.

[0058] Further, the crosshead guide box 200 and the tie rod box 300 are sequentially arranged in the housing 1 with the gear reduction box 100.

[0059] In the embodiment, the crosshead guide box 200 includes eight guide seat 201, upper plate, lower plate, left wall plate, right wall plate and observation window cover plate.

[0060] The guide seat 201 is divided into four groups, and each group is symmetrically distributed up and down according to the axis of reciprocating motion of the crosshead. The two groups of guide seats 201 on the side of the fluid end have positioning surfaces for positioning the upper and lower guide plates of the crosshead.

[0061] The upper cover plate spans the crosshead guide box 200 and the tie rod box 300, and has a round rectangular hole above the tie rod box 300 for observing and disassembling the parts in the tie rod box, and has a round tube above the crosshead guide box 200 for guiding the flow of lubricating oil to the crosshead.

[0062] The left wall plate and the right wall plate have observation holes corresponding to the crosshead for observing the working condition of the crosshead and disassembling the parts at the crosshead, characterized in that the observation holes are oblong to reduce the stress concentration problem of the power end housing under stress.

[0063] The observation window cover plate is a colorless transparent acrylic cover plate, and the sealing form is a sealing gasket. The outer part of the observation window cover plate has a ring-shaped metal pressing plate with the same contour, which can reduce the local deformation of the acrylic plate and the resulting leakage of lubricating oil due to poor sealing. The metal pressing plate is fastened by screw connection, and the threaded fixing hole is a blind hole.

[0064] The tie rod box 300 includes a front wall plate, a batten 301, a front bottom plate 302, an upper cover plate and a spray pipe:

[0065] The batten 301 is located at the center of two adjacent cylinders and is parallel to the left and right wall plates, and is arranged along the upper cover plate, the front wall plate and the front bottom plate 302, respectively. When the power end housing is stressed, it acts as a reinforcing rib to share the stress of the above-mentioned parts, so that a more lightweight structure design can be adopted.

[0066] The front bottom plate 302 has a backwater hole corresponding to the cylinder and the spray tank sedimentation tank, and the backwater hole is made by stamping process. The slope around the backwater hole can guide the spray water in the tie rod box 300 to reduce the storage and splashing of water outside the spray tank. The front bottom plate 302 has a through hole for the spray pipe, which is used for welding the spray pipe.

[0067] There is an observation window on the wall plate, and there is an observation window on the inclined upper cover plate.

[0068] In summary, in addition to the gear reduction box 100, the housing is sequentially provided with a cross head guide plate box 200 and a pull rod box 300. The cross head guide plate box 200 provides accurate guidance for the reciprocating movement of the cross head, ensuring the stability and accuracy of its movement; the pull rod box 300 is used to accommodate and protect the pull rod, so that it can work stably and reliably in the process of power transmission. The three parts work together in the housing to form a complete mud pump power end structure, providing a solid foundation for the efficient and stable operation of the mud pump.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A mud pump power end housing characterized by, The gear reduction box (100) comprises a bearing seat (101) arranged in the housing (1), which is welded or cast, and part of the bearing seat (101) is cast and part is welded.

2. A power end housing for a slurry pump as claimed in claim 1, wherein, The bearing seat (101) comprises, A driving shaft bearing seat (102) arranged in the housing (1); A crankshaft bearing seat (103) arranged in the housing (1) on one side of the driving shaft bearing seat (102); A crankshaft bearing cover (104) arranged on the crankshaft bearing seat (103).

3. A power end housing for a slurry pump as claimed in claim 2, wherein, The bearing seat (101) further comprises, A rib plate (105) arranged in the housing (1) for supporting the driving shaft bearing seat (102) and the crankshaft bearing seat (103).

4. A power end housing for a slurry pump as claimed in claim 2, wherein, The crankshaft bearing seat (103) has a square side.

5. A power end housing for a slurry pump as claimed in claim 2, wherein, The crankshaft bearing cover (104) is fixed on the crankshaft bearing seat (103) by bolts.

6. A power end housing for a slurry pump as claimed in claim 2, wherein, The crankshaft bearing cover (104) has a square side.

7. A power end housing for a slurry pump as claimed in claim 3, wherein The bearing seat (101) is welded, and the driving shaft bearing seat (102), the crankshaft bearing seat (103) and the rib plate (105) are welded in the housing (1).

8. A slurry pump power end housing according to claim 7, wherein, The rib plate (105) has several, arranged along the center line of the crankshaft bearing seat (103) or in parallel to the center line.

9. A power end housing for a slurry pump as claimed in claim 1 or 2, wherein, The bearing seat (101) further comprises, An oil inlet main pipe (106) arranged in the housing (1); An oil pool (107) arranged in the housing (1) and welded on all sides, located below the oil inlet main pipe (106) and at the bottom of the gear reduction box (100); An oil inlet filter core cover (108) arranged on the wall plate on one side of the oil pool (107).

10. A power end housing for a slurry pump as claimed in claim 1, wherein, Further comprising a crosshead guide plate box (200) and a pull rod box (300), which are arranged in the housing (1) in sequence with the gear reduction box (100).

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