CN215521241U

CN215521241U - Plunger steel bushing structure of emulsion pump

Info

Publication number: CN215521241U
Application number: CN202121464369.XU
Authority: CN
Inventors: 王博; 石文利; 陈仁建; 郑巨静; 郑铠
Original assignee: Zhejiang Zhongmei Machinery Technology Co ltd
Current assignee: Zhejiang Zhongmei Machinery Technology Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-14
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a plunger steel sleeve structure of an emulsion pump, which is connected with a crankcase and a pump head assembly and comprises a plunger hole and a general assembly pipe sleeve, wherein the general assembly pipe sleeve comprises a limiting part and a middle cavity, a plunger rod and a sealing assembly are arranged in the middle cavity, when the emulsion pump is assembled, the pump head assembly is firstly installed on the crankcase, then the plunger rod and the sealing assembly are installed on the general assembly pipe sleeve, then the general assembly pipe sleeve is inserted into the plunger hole from an opening end and is connected with a driving slide block of the crankcase, and finally the general assembly pipe sleeve is fixed on the pump head assembly through a fixing structure, so that the assembly of the emulsion pump is completed, the plunger rod, the sealing assembly and the general assembly pipe sleeve are externally assembled into an integral structure in advance, and then the plunger hole can be quickly inserted into or pulled out when the emulsion pump is installed or overhauled and maintained, so as to realize the integral installation and disassembly, the disassembly is convenient, and the damaged parts can be quickly replaced when spare parts exist, so that the machine halt time is shortened.

Description

Plunger steel bushing structure of emulsion pump

Technical Field

The utility model relates to the technical field of emulsion pumps, in particular to a plunger steel sleeve structure of an emulsion pump.

Background

The emulsion pump is used for a coal face and provides emulsion for the hydraulic support, and the working principle drives the piston to do reciprocating motion by the rotation of the crankshaft, so that liquid suction and liquid discharge are realized. The emulsion pump is used as essential equipment of a mine, is an important power hydraulic component of special liquid injection equipment of an external injection type single hydraulic prop and a hydraulic support in underground coal mine support operation, and is also an indispensable tool for replacement and maintenance of the support operation.

The existing emulsion pump, as shown in fig. 1, includes a crankcase 01, a pump head assembly 02 and a plunger structure connecting the crankcase 01 and the pump head assembly 02, where the plunger structure includes a high-pressure steel sleeve assembly 03 disposed on one side of the pump head assembly 02, a plunger seal assembly 04 disposed in the high-pressure steel sleeve assembly 03, and a plunger rod 05 driven by the crankcase 01 and cooperating with the pump head assembly 02 to suck and discharge liquid. However, when the damaged plunger seal assembly 04 is replaced, the pump head assembly 02 needs to be disassembled first, and then the plunger seal assembly 03 in the high-pressure steel sleeve assembly 03 needs to be replaced.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the problems that the pump head assembly needs to be disassembled first to replace the plunger sealing assembly in the prior art, the replacement process is troublesome, time and labor are wasted, and therefore, the plunger steel sleeve structure of the emulsion pump, which can rapidly replace the sealing assembly, is convenient to disassemble, and saves time and labor, is provided.

The utility model provides a plunger steel sleeve structure of an emulsion pump, which connects a crankcase and a pump head assembly and comprises:

a plunger bore extending between the crankcase and the pump head assembly and having an open end extending through to an outer wall of the pump head assembly;

the assembly pipe sleeve is inserted into the plunger hole from the opening end, and is provided with a limiting part which is matched and abutted on the outer wall of the pump head assembly; a plunger rod connected with a driving slide block of the crankcase and a sealing component arranged between the plunger rod and the inner wall of the general assembly pipe sleeve are movably arranged in the middle cavity of the general assembly pipe sleeve in a penetrating manner;

and the fixing structure is arranged between the limiting part and the pump head assembly, so that the assembly pipe sleeve and the pump head assembly keep fixed relative positions.

In the plunger steel sleeve structure of the emulsion pump, the limiting part is a limiting boss arranged at one end of the assembly pipe sleeve, and the limiting boss abuts against the outer wall of the pump head assembly when the assembly pipe sleeve is inserted into the plunger hole.

In the plunger steel sleeve structure of the emulsion pump, the fixing structure comprises a through hole arranged on the limiting boss, a threaded hole arranged on the side wall of the pump head assembly, and a fastening bolt penetrating through the through hole and connected in the threaded hole in a threaded manner, and the assembly pipe sleeve and the pump head assembly are fixedly connected after the fastening bolt is fastened.

In the plunger steel sleeve structure of the emulsion pump, the pump head assembly is provided with a liquid channel which is perpendicular to the axial direction of the assembly pipe sleeve, and the circumferential side wall of the assembly pipe sleeve is provided with a connecting hole which is communicated with the liquid channel along the radial direction of the circumferential side wall of the assembly pipe sleeve in a penetrating manner.

In the plunger steel sleeve structure of the emulsion pump, two first sealing rings which are respectively arranged on the left side and the right side of the connecting hole are arranged between the final assembly pipe sleeve and the inner wall of the plunger hole.

In the plunger steel sleeve structure of the emulsion pump, the sealing component is a sealing shaft sleeve which is sleeved on the plunger rod and is abutted against the inner wall of the general assembly pipe sleeve, and a threaded sleeve is connected to one end, opposite to the opening end, of the middle cavity in a threaded manner.

In the plunger steel sleeve structure of the emulsion pump, a second sealing ring is arranged between the threaded sleeve and the inner wall of the middle cavity.

In the plunger steel sleeve structure of the emulsion pump, the plunger rod comprises a driving end which is inserted into the middle cavity and can be opposite to the thread sleeve, and a driven end which is connected with the driving sliding block, and the driving sliding block drives the driving end to do linear reciprocating motion in the middle cavity through the driven end.

In the plunger steel sleeve structure of the emulsion pump, a clamping groove structure is arranged between the driven end and the driving slider, the clamping groove structure comprises an installation clamping groove formed in the driving slider and an annular boss arranged at one end of the driven end, and the annular boss is clamped in the installation clamping groove when the final assembly pipe sleeve is inserted into the middle cavity.

In the plunger steel sleeve structure of the emulsion pump, a sealing baffle cover is further arranged between the driven end and the inner wall of the crankcase, and the sealing baffle cover and the crankcase keep fixed in relative position through a bolt.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

1. the plunger steel sleeve structure of the emulsion pump provided by the utility model is characterized in that when the emulsion pump is assembled, the pump head component is firstly arranged on the crankcase, the plunger rod and seal assembly is then installed onto the final assembly sleeve, which is then inserted into the plunger bore from the open end, and the plunger rod is connected with the driving slide block of the crankcase, and finally the assembly pipe sleeve is fixed on the pump head assembly through a fixing structure, thereby completing the assembly of the emulsion pump, which is advantageous in that the plunger rod, the sealing assembly and the assembly sleeve are externally pre-assembled into a unitary structure, then the plunger piston hole can be quickly inserted or pulled out during installation or maintenance, so that the integrated installation and disassembly are realized, the disassembly is convenient, the time and the labor are saved, and can quickly replace damaged parts when spare parts are available, thereby reducing the downtime of the machine.

2. According to the plunger steel sleeve structure of the emulsion pump, the other end of the middle cavity is provided with the threaded sleeve in threaded connection with the middle cavity, and through the threaded sleeve, a maintainer can open the middle cavity of the assembly pipe sleeve only by disassembling the threaded sleeve, so that foreign matters remained in the middle cavity of the emulsion pump in long-term use can be quickly cleaned, and the later daily maintenance is facilitated.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below.

FIG. 1 is a cross-sectional view of a conventional emulsion pump;

FIG. 2 is a schematic structural diagram of a plunger steel sleeve structure of the emulsion pump provided by the utility model;

FIG. 3 is an enlarged partial schematic view of the spherical connecting rod and the plunger rod shown in FIG. 2;

FIG. 4 is an enlarged partial schematic view of the final assembly sleeve of FIG. 2 installed in the bore of the plunger;

FIG. 5 is a schematic view of the final assembly sleeve shown in FIG. 2;

description of reference numerals:

1-a crankcase; 11-driving the slide block; 12-installing a clamping groove; 13-sealing the blocking cover; 14-a latch;

2-a pump head assembly; 21-a liquid channel;

3-plunger hole; 31-open end;

4-final assembly of pipe sleeves; 41-a limiting part; 42-a central cavity; 43-a seal assembly; 44-connecting hole; 45-a first sealing ring; 46-a threaded sleeve; 47-a second seal ring;

5-a plunger rod; 51-a drive end; 52-driven end; 53-annular boss;

6-a fixed structure; 61-fastening bolts.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

the utility model provides a plunger steel sleeve structure of an emulsion pump as shown in figures 2-5, which connects a crankcase 1 and a pump head assembly 2 and comprises:

a plunger bore 3 extending between the crankcase 1 and the pump head assembly 2 and having an open end 31 extending through to an outer wall of the pump head assembly 2;

the general assembly pipe sleeve 4 is inserted into the plunger hole 3 from the opening end 31, and is provided with a limiting part 41 which is matched and abutted on the outer wall of the pump head assembly 2; a plunger rod 5 connected with a driving slide block 11 of the crankcase 1 and a sealing component 43 arranged between the plunger rod 5 and the inner wall of the general assembly pipe sleeve 4 are movably arranged in the middle cavity 42 of the general assembly pipe sleeve 4 in a penetrating way;

and the fixing structure 6 is arranged between the limiting part 41 and the pump head assembly 2, so that the assembly pipe sleeve 4 and the pump head assembly 2 keep fixed relative positions.

The above embodiment is the core technical solution of this embodiment, when the emulsion pump is assembled, the pump head assembly 2 is first installed on the crankcase 1, then the plunger rod 5 and the sealing assembly 43 are installed on the assembly sleeve 4, then the assembly sleeve 4 is inserted into the plunger hole 3 from the open end 31, and the plunger rod 5 is connected to the driving slider 11 of the crankcase 1, and finally the assembly sleeve 4 is fixed on the pump head assembly 2 through the fixing structure 6, thereby completing the assembly of the emulsion pump, which is advantageous in that the plunger rod 5, the sealing assembly 43 and the assembly sleeve 4 are externally pre-assembled into an integrated structure, and then the plunger hole 3 can be quickly inserted or pulled out during installation or maintenance, so as to achieve the integrated assembly and disassembly, which is convenient to disassemble, saves time and labor, and can quickly replace damaged parts when spare parts are available, thereby reducing the down time of the machine.

As a specific structure, the limiting portion 41 is a limiting boss disposed at one end of the assembly pipe sleeve 4, and the limiting boss abuts against the outer wall of the pump head assembly 2 when the assembly pipe sleeve 4 is inserted into the plunger hole 3, so as to perform a limiting installation function, and remind an operator that the assembly pipe sleeve 4 is installed in place.

As shown in fig. 4, the fixing structure 6 includes a through hole disposed on the limiting boss, a threaded hole disposed on the side wall of the pump head assembly 2, and a fastening bolt 61 passing through the through hole and screwed into the threaded hole, and the final assembly pipe sleeve 4 and the pump head assembly 2 are fixedly connected through the fastening fit between the fastening bolt 61 and the threaded hole, so that the structure is simple, and the assembly and disassembly are convenient and fast.

In order to realize pump head assembly 2 inhales the flowing back function, be equipped with the perpendicular to on pump head assembly 2 the liquid channel 21 that final assembly pipe box 4 axial set up, it is provided with the intercommunication radially to run through along it on the circumferential side wall of final assembly pipe box 4 liquid channel 21's connecting hole 44 makes final assembly pipe box 4 can not influence after the installation pump head assembly 2 inhales the flowing back function, further sets up, final assembly pipe box 4 with be provided with the branch between the inner wall in plunger hole 3 and establish two first sealing washer 45 in the connecting hole 44 left and right sides, improve liquid channel 21's leakproofness avoids appearing the weeping problem.

As a specific structural arrangement, the sealing assembly 43 is a sealing shaft sleeve which is sleeved on the plunger rod 5 and abuts against the inner wall of the assembly pipe sleeve 4, a threaded sleeve 46 is connected to one end of the middle cavity 42 opposite to the open end 31 in a threaded manner, and a maintainer can open the middle cavity 42 of the assembly pipe sleeve 4 by only disassembling the threaded sleeve 46, so that foreign matters remained in the middle cavity 42 when the emulsion pump is used for a long time can be cleaned quickly, and therefore, the later daily maintenance is facilitated, and further, a second sealing ring 47 is arranged between the threaded sleeve 46 and the inner wall of the middle cavity 42, so that liquid is prevented from flowing out from the threaded sleeve 46, and the sealing performance of the liquid channel 21 is improved.

As shown in fig. 3-4, the plunger rod 5 includes a driving end 51 inserted into the central cavity 42 and opposite to the threaded sleeve 46, and a driven end 52 connected to the driving slider 11, the driving slider 11 drives the driving end 51 to reciprocate linearly in the central cavity 42 through the driven end 52, and the plunger rod 5 changes the internal air pressure of the central cavity 42 during the movement, so as to guide the liquid to be sucked into or discharged from the liquid channel 21.

In order to facilitate the assembly of the plunger rod 5 and the driving slider 11, a slot structure is provided between the driven end 52 and the driving slider 11, the slot structure includes a mounting slot 12 provided on the driving slider 11, and an annular boss 53 provided at one end of the driven end 52, the mounting slot 12 is in a semicircular arrangement with an upward opening, when the final assembly sleeve 4 is inserted into the middle cavity 42, the annular boss 53 is engaged in the semicircular mounting slot 12 under the action of gravity, so that the plunger rod 5 is integrally connected with the driving slider 11, and further, a sealing stop cover 13 is further provided between the driven end 52 and the inner wall of the crankcase 1, the sealing stop cover 13 is kept fixed relative to the crankcase 1 by a bolt 14, and the sealing stop cover 13 is fastened to limit the plunger rod 5, therefore, the phenomenon that the annular boss 53 is separated from the installation clamping groove 12 due to the fact that the plunger rod 5 shakes is avoided, meanwhile, the sealing blocking cover 13 can also prevent foreign matters such as dust in the crankcase 1 from falling into the installation clamping groove 12, and the safety of a product in use is improved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. The utility model provides a plunger steel bushing structure of emulsion pump connects crankcase (1) and pump head subassembly (2), its characterized in that includes:

a plunger hole (3) extending between the crankcase (1) and the pump head assembly (2) and having an open end (31) penetrating to an outer wall of the pump head assembly (2);

the general assembly pipe sleeve (4) is inserted into the plunger hole (3) from the opening end (31), and is provided with a limiting part (41) which is matched and abutted on the outer wall of the pump head assembly (2); a plunger rod (5) connected with a driving slide block (11) of the crankcase (1) is movably arranged in a middle cavity (42) of the assembly pipe sleeve (4) in a penetrating way, and a sealing component (43) is arranged between the plunger rod (5) and the inner wall of the assembly pipe sleeve (4);

and the fixing structure (6) is arranged between the limiting part (41) and the pump head assembly (2) to ensure that the general assembly pipe sleeve (4) and the pump head assembly (2) keep fixed relative positions.

2. The plunger steel sleeve structure of the emulsion pump according to claim 1, wherein the limiting part (41) is a limiting boss arranged at one end of the assembly pipe sleeve (4), and the limiting boss abuts against the outer wall of the pump head assembly (2) when the assembly pipe sleeve (4) is inserted into the plunger hole (3).

3. The plunger steel sleeve structure of the emulsion pump according to claim 2, characterized in that the fixing structure (6) comprises a through hole arranged on the limit boss, a threaded hole arranged on the side wall of the pump head assembly (2), and a fastening bolt (61) threaded in the threaded hole through the through hole, wherein the fastening bolt (61) is fastened to keep the assembly sleeve (4) and the pump head assembly (2) fixedly connected.

4. The plunger steel sleeve structure of the emulsion pump according to any one of claims 1 to 3, wherein the pump head assembly (2) is provided with a liquid passage (21) which is arranged perpendicular to the axial direction of the assembly pipe sleeve (4), and the circumferential side wall of the assembly pipe sleeve (4) is provided with a connecting hole (44) which is communicated with the liquid passage (21) in a penetrating way along the radial direction.

5. The plunger steel sleeve structure of the emulsion pump according to claim 4, characterized in that two first sealing rings (45) respectively arranged at the left and right sides of the connecting hole (44) are arranged between the assembly pipe sleeve (4) and the inner wall of the plunger hole (3).

6. The plunger steel sleeve structure of the emulsion pump according to claim 5, wherein the sealing component (43) is a sealing shaft sleeve which is sleeved on the plunger rod (5) and is abutted against the inner wall of the assembly pipe sleeve (4), and a threaded sleeve (46) is connected with the middle cavity (42) in a threaded manner at one end opposite to the open end (31).

7. The plunger steel bushing structure of the emulsion pump according to claim 6, wherein a second sealing ring (47) is arranged between the threaded sleeve (46) and the inner wall of the middle cavity (42).

8. The plunger steel sleeve structure of the emulsion pump according to claim 6 or 7, characterized in that the plunger rod (5) comprises a driving end (51) inserted into the middle cavity (42) and opposite to the threaded sleeve (46), and a driven end (52) connected with the driving slider (11), and the driving slider (11) drives the driving end (51) to do linear reciprocating motion in the middle cavity (42) through the driven end (52).

9. The plunger steel sleeve structure of the emulsion pump according to claim 8, characterized in that a clamping groove structure is arranged between the driven end (52) and the driving slider (11), the clamping groove structure comprises a mounting clamping groove (12) arranged on the driving slider (11) and an annular boss (53) arranged at one end of the driven end (52), and when the assembly pipe sleeve (4) is inserted into the middle cavity (42), the annular boss (53) is clamped in the mounting clamping groove (12).

10. The plunger steel bushing structure of the emulsion pump according to claim 9, characterized in that a sealing stop cover (13) is further arranged between the driven end (52) and the inner wall of the crankcase (1), and the sealing stop cover (13) is kept in a fixed relative position with the crankcase (1) through a bolt (14).