Single-plunger pump shell connecting structure

Abstract

The utility model discloses a single plunger pump shell connecting structure which comprises a right side shell body, the left side end of the right side shell body extends into an inner hole of a left side shell body, annular clamping grooves are formed in the peripheries of the adjacent head ends of the right side shell body and the left side shell body, and the vertical part of a connecting sleeve with the section of a U-shaped structure is clamped into the two annular clamping grooves. And a fixing sleeve is sleeved outside the connecting sleeve. The shell is divided into the left part and the right part, the left part and the right part are respectively processed and cut by using a processing center, so that the two parts are relatively easy to process and cut, the abrasion of a cutter is relatively small, and the cutter is replaced once when hundreds of parts are processed, so that the processing difficulty is reduced, the processing efficiency of shell parts is improved, and the percent of pass of products is also easy to guarantee. And after the shell is divided into the left section and the right section, the length of an inner hole of each section of the shell is at least shortened by more than 1 / 3 compared with an integral structure, so that the grinding of the inner hole of each section of the shell becomes easier.

Description

Technical Field

[0001] This utility model relates to a single plunger pump housing connection structure, belonging to the field of plunger pump technology. Background Technology

[0002] The plunger pump structure includes a housing section, and currently, the housing structure is all made of integral stainless steel, making the machining of the housing structure quite difficult. Furthermore, some housing structures have special shapes for installation and connection parts, requiring machining centers for these types of housing structures. The difficulty of cutting integral structures results in long machining times and significant tool wear. Tools need to be replaced after machining only a few housing structures, leading to low machining efficiency and a decrease in product yield as tool wear progresses.

[0003] Another issue is that the inner hole of the shell structure needs to be machined using a grinding process, and the inner hole of the integral shell structure is relatively long, which makes grinding more difficult. Utility Model Content

[0004] The purpose of this invention is to provide a single-plunger pump housing connection structure. This housing is divided into left and right side housings, which reduces the difficulty of machining, shortens the machining time, minimizes tool wear, eliminates the need for repeated tool replacements, and makes internal hole grinding easier.

[0005] The technical solution of this utility model is as follows: a single plunger pump housing connection structure, including a right side housing, the left end of the right side housing extending into the inner hole of the left side housing, and annular grooves provided on the outer periphery of adjacent ends of the right side housing and the left side housing. The vertical part of the connecting sleeve with a U-shaped cross-section is inserted into the two annular grooves, and a fixing sleeve is sleeved on the outside of the connecting sleeve.

[0006] In the aforementioned single-plunger pump housing connection structure, the outer periphery of the left end of the right housing has a multi-stage stepped structure that gradually increases from left to right, and the inner hole on the right side of the left housing has a multi-stage stepped hole structure that gradually increases from right to left.

[0007] In the aforementioned single-plunger pump housing connection structure, the connecting sleeve is composed of two semi-circular ring structures.

[0008] In the aforementioned single-plunger pump housing connection structure, a keyway is provided on the surface of the right and left housings between the two annular slots, and a flat key is placed in the keyway.

[0009] In the aforementioned single-plunger pump housing connection structure, a convex ring is provided on the left side of the annular groove of the left housing, and a fixed step is provided on the right side of the annular groove of the right housing. The left end of the fixed sleeve abuts against the convex ring, and the thin-walled structure on the right end abuts against the fixed step after the opening is closed.

[0010] In the aforementioned single-plunger pump housing connection structure, the left housing is made of aluminum alloy.

[0011] The beneficial effects of this utility model are as follows: Compared with the prior art, the shell of this utility model is divided into two parts, left and right. It is much easier to process and cut the two parts using a machining center. The tool wear is relatively small, and the tool only needs to be changed once every few hundred parts are processed. This reduces the processing difficulty, improves the processing efficiency of the shell parts, and makes it easier to ensure the product qualification rate.

[0012] Furthermore, after the shell is divided into left and right sections, the inner hole length of each section is shortened by at least one-third compared to the integral structure, making the grinding of the inner hole of each section much easier. In addition, the use of aluminum alloy for the left shell further reduces the cutting difficulty, making processing easier, while reducing the overall weight and facilitating handling and installation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the left side shell.

[0015] Figure 3 This is a schematic diagram of the right-side shell structure;

[0016] Figure 4 This is a schematic diagram of the fixed sleeve structure;

[0017] Figure 5 This is a schematic diagram of the connecting sleeve.

[0018] Reference numerals: 1-Right side housing, 2-Left side housing, 3-Annular groove, 4-Connecting sleeve, 5-Fixing sleeve, 6-Flat key, 7-Protruding ring, 8-Fixing step, 9-Thin-walled structure, 10-Keyway. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0020] An embodiment of this utility model: A single-plunger pump housing connection structure includes a right-side housing 1, the left end of which extends into the inner hole of the left-side housing 2. The inner holes of the right-side housing 1 and the left-side housing 2 are combined to form a complete housing structure inner hole. Annular grooves 3 are provided on the outer periphery of adjacent ends of the right-side housing 1 and the left-side housing 2. That is, an annular groove 3 is provided on the outer periphery of the right end of the left-side housing 2, and an annular groove 3 is provided on the outer periphery of the left end of the right-side housing 1. The vertical portions on both sides of the connecting sleeve 4, which has a U-shaped cross-section, are respectively inserted into the two annular grooves 3. Thus, the connecting sleeve 4 fixes the right-side housing 1 and the left-side housing 2 in the axial upper limit, preventing axial displacement between them. A fixing sleeve 5 is sleeved on the outside of the connecting sleeve 4, which limits and fixes the connecting sleeve 4, preventing it from falling out of the annular grooves 3.

[0021] The outer periphery of the left end of the right shell 1 has a multi-level stepped structure that gradually increases from left to right. The inner hole on the right side of the left shell 2 has a multi-level stepped hole structure that gradually increases from right to left. The multi-level stepped structure of the right shell 1 extends into the multi-level stepped hole structure of the left shell 2. When the stepped surface contacts the stepped surface, it means that the two are connected in place. At this time, the two can no longer move towards each other, which facilitates mutual nesting and positioning.

[0022] The connecting sleeve 4 consists of two semi-circular ring structures, which facilitates the installation and processing of the connecting sleeve 4.

[0023] A keyway 10 is provided on the surface of the right housing 1 and the left housing 2 between the two annular slots 3. Part of the keyway 10 is located on the surface of the right housing 1 and part is located on the surface of the left housing 2. A flat key 6 is placed in the keyway 10. The keyway 10 and the flat key 6 can prevent the right housing 1 from rotating relative to the left housing 2.

[0024] A raised ring 7 is provided on the outer left side of the annular groove 3 of the left housing 2, and a fixing step 8 is provided on the outer right side of the annular groove 3 of the right housing 1. During the installation of the fixing sleeve 5, its left end abuts against the raised ring 7, and the thin-walled structure 9 on the right end abuts against the fixing step 8 after the opening is closed, thereby fixing the fixing sleeve 5 and preventing the fixing sleeve 5 from sliding along the axial direction. When it is necessary to replace the parts, the thin-walled structure 9 can be cut off and the fixing sleeve 5 can be removed.

[0025] The left side shell 2 is made of aluminum alloy, which further reduces the cutting difficulty of the left side shell 2, makes it easier to process, and at the same time reduces the overall structural weight, making it easier to handle and install.

Claims

1. A single-plunger pump housing connection structure, characterized in that: It includes a right shell (1), the left end of the right shell (1) extends into the inner hole of the left shell (2), and annular grooves (3) are provided on the outer periphery of adjacent ends of the right shell (1) and the left shell (2). The vertical part of the connecting sleeve (4) with a U-shaped cross section is inserted into the two annular grooves (3), and a fixing sleeve (5) is sleeved on the outside of the connecting sleeve (4).

2. The single-plunger pump housing connection structure according to claim 1, characterized in that: The outer periphery of the left end of the right shell (1) has a multi-level stepped structure that gradually increases from left to right, and the inner hole of the right side of the left shell (2) has a multi-level stepped hole structure that gradually increases from right to left.

3. The single-plunger pump housing connection structure according to claim 1, characterized in that: The connecting sleeve (4) consists of two semi-circular ring structures.

4. The single-plunger pump housing connection structure according to claim 1, characterized in that: A keyway (10) is provided on the surface of the right housing (1) and the left housing (2) between the two annular slots (3), and a flat key (6) is placed in the keyway (10).

5. The single-plunger pump housing connection structure according to claim 1, characterized in that: The left side of the annular groove (3) of the left shell (2) is provided with a protruding ring (7), and the right side of the annular groove (3) of the right shell (1) is provided with a fixed step (8). The left end of the fixed sleeve (5) abuts against the protruding ring (7), and the thin-walled structure (9) on the right end abuts against the fixed step (8) after closing.

6. The single-plunger pump housing connection structure according to claim 1, characterized in that: The left side shell (2) is made of aluminum alloy.

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