Electric crankshaft pump and pump end cover connecting structure thereof

Abstract

The utility model provides an electric crankshaft pump and a pump end cover connecting structure thereof, the pump end cover connecting structure comprises a box body, one end of the box body is connected with a bottom plate, one end of the box body back to the bottom plate is provided with a piston hole, one side of the box body is provided with a mounting hole, the box body is fixedly connected with a fixed cover, and the fixed cover is fixedly connected with the bottom plate. A mounting hole is formed in the box body, the mounting hole is located in the fixing cover, a placement hole is formed in the side, back to the mounting hole, of the box body, a protective cover is fixedly connected to the box body, the placement hole is located in the protective cover, a connecting hole is formed in the protective cover, a supporting rod is fixedly connected to the inner wall of the placement hole, and the end cover is fixedly connected to the box body. A vertical groove and a transverse groove are formed in the side wall of the end cover, the vertical groove is communicated with the end face of the end cover, after the supporting rod corresponds to the vertical groove, the end cover is rotated, the supporting rod is made to move into the transverse groove, a supporting rod is connected to the outer wall of the end cover, and the purpose of conveniently pumping water is achieved.

Description

Technical Field

[0001] The utility model relates to the field of pumps, in particular to an electric crankshaft pump and a pump end cover connection structure thereof. Background Art

[0002] At present, a Chinese patent with authorization announcement number CN211039010U discloses a reciprocating pump crankcase, including a case, in which a transmission gear set and a crankshaft are arranged. The transmission gear set drives the crankshaft to swing, and the crankshaft connecting plug drives it to reciprocate directly. A downward protrusion is arranged at the bottom of the shell of the case, and a flow stabilizing baffle is arranged in the cavity surrounded by the inner wall of the protrusion. The flow stabilizing baffle and the inner wall of the protrusion form an oil-water separation chamber, and the oil-water separation chamber is connected to the inner cavity of the case.

[0003] By installing a flow-stabilizing baffle in the oil-water separation chamber, the flowing lubricating oil is made to stop in this area. The density of water is greater than that of lubricating oil, and the oil and water are separated. The water is deposited at the bottom of the separation chamber to form sediment water. After the oil and water are separated, the water content of the lubricating oil above the flow-stabilizing baffle is reduced, which reduces the risk of emulsification and deterioration and improves the reliability of the machine.

[0004] However, in actual production, the deposited water needs to be cleaned regularly to avoid excessive deposited water causing lubrication failure of the transmission gear set. This requires disassembling the entire box to extract the deposited water. It requires using a screwdriver to remove multiple screws from the box, and then disassembling the box before the water pipe can be inserted into the box, resulting in inconvenient maintenance. Utility Model Content

[0005] In view of this, the utility model aims to provide an electric crankshaft pump and a pump end cover connection structure thereof, so as to facilitate the extraction of accumulated water.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a pump end cover connection structure, including a box body, one end of the box body is connected to a bottom plate, the end of the box body facing away from the bottom plate is provided with a piston hole, one side of the box body is provided with a mounting hole, the box body is fixedly connected with a fixing cover, the mounting hole is located inside the fixing cover, the side of the box body facing away from the mounting hole is provided with a placement hole, the box body is fixedly connected with a protective cover, the placement hole is located inside the protective cover, and also includes an end cover, the protective cover is provided with a connecting hole, the inner wall of the placement hole is fixedly connected with a support rod, the side wall of the end cover is provided with a vertical groove and a horizontal groove, the vertical groove is connected with the end face of the end cover, one end of the horizontal groove is connected with the vertical groove, the support rod corresponds to the vertical groove, the end cover is rotated and the support rod is moved into the horizontal groove, and the outer wall of the end cover is connected with a support rod.

[0007] To implement the above technical solution, the deposited water is located on the bottom plate, and the end cover is driven to rotate by the support rod, so that the support rod is moved from the horizontal groove to the vertical groove, and the end cover can be removed from the placement hole. The water pipe is inserted from the placement hole into the box body to extract the deposited water. The operation is convenient and the purpose of easy maintenance is achieved; the end cover is removed from the box body by the support rod contacting the inner wall of the horizontal groove.

[0008] As a preferred solution of the utility model, a positioning recessed hole is provided on the edge of the end cover, a mounting recessed hole is provided on the inner wall of the placement hole, an elastic member is fixedly connected in the mounting recessed hole, a positioning bead for being embedded in the positioning recessed hole is fixedly connected to the elastic member, and the positioning bead is slidably connected in the mounting recessed hole.

[0009] To implement the above technical solution, the end cover is moved toward the direction close to the support rod so that the support rod is slidably connected in the straight groove, and then the end cover is rotated to place the support rod in the transverse groove. As the end cover rotates further, when the support rod collides with the bottom wall of the transverse groove, the positioning bead corresponds to the positioning recessed hole, and the outer wall of the positioning bead is embedded in the positioning recessed hole through the elastic force of the elastic part. The friction force generated realizes the positioning of the end cover, and a small part of the positioning bead is located in the positioning recessed hole, and most of the positioning bead is located in the installation recessed hole.

[0010] As a preferred solution of the utility model, an anti-slip block is fixedly connected to the side of the protective cover facing away from the box body, the anti-slip block is inclined in a direction away from the end cover, and the anti-slip block is used to abut against the end cover.

[0011] By implementing the above technical solution and setting the anti-dropping block, the protectiveness of the end cover is improved.

[0012] As a preferred solution of the utility model, a water storage arc surface is provided on one side of the bottom plate facing the box body.

[0013] The implementation of the above technical solution increases the storage capacity of sedimentary water.

[0014] As a preferred solution of the utility model, an oil filling pipe is fixedly connected to the bottom plate, the oil filling pipe extends from the water storage arc surface, the oil filling pipe faces the piston hole, and a sealing plug is connected to the oil filling pipe.

[0015] To implement the above technical solution, the oil pipe is injected into the box body from the oil filling pipe, which facilitates lubrication of the piston rod. In addition, the deposited water is not easy to submerge the oil filling pipe, so that the deposited water is not easy to enter the oil pipe.

[0016] The utility model also provides an electric crankshaft pump, including a crankshaft, a connecting sleeve, a piston rod, a main engine, and a pump end cover connecting structure, wherein the crankshaft is located in a casing and one end is rotatably connected to a fixed cover, the other end of the crankshaft is rotatably connected to the end cover, the connecting sleeve is rotatably connected to the crankshaft, one end of the piston rod is hinged to the connecting sleeve, the other end of the piston rod passes through a piston hole and is slidably connected to the main engine, and the main engine is fixed to the casing.

[0017] To implement the above technical solution, the crankshaft rotates, the connecting sleeve and the crankshaft rotate relative to each other, the piston rod moves along the length direction of the piston hole, and the piston rod is slidably connected to the main engine to realize water pumping operation. After the end cover is removed from the protective cover, the water pipe is inserted into the box body through the gap between the crankshaft and the placement hole to facilitate the extraction of deposited water. The operation is simple.

[0018] As a preferred solution of the utility model, an oil storage concave hole is opened on the inner wall of the fixed cover, and the oil storage concave hole is filled with a sponge block.

[0019] To implement the above technical solution, lubricating oil is injected into the oil storage recess, and the sponge block absorbs the lubricating oil. During the rotation of the crankshaft, the sponge block releases the lubricating oil due to being squeezed by the crankshaft, thereby achieving long-term lubrication of the crankshaft and greatly extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the external structure of Example 1;

[0021] Figure 2 This is a schematic diagram of the explosion structure of Example 1;

[0022] Figure 3 Schematic diagram of the position of the piston hole in Example 1;

[0023] Figure 4 is a schematic diagram of the structure of the end cover in Example 1;

[0024] Figure 5 This is a schematic diagram of the connection structure of the straight groove and the transverse groove in Example 1;

[0025] Figure 6 This is a schematic diagram of the position of the positioning beads in Example 1;

[0026] Figure 7 It is a structural schematic diagram of Example 2;

[0027] Figure 8 This is a schematic diagram of the explosion structure of Example 2;

[0028] Fig. 9 This is a schematic diagram of the position of the sponge block in Example 2.

[0029] Figure numerals: 1. Box body; 2. Bottom plate; 21. Water storage arc surface; 22. Oil filling pipe; 3. Piston hole; 4. Mounting hole; 41. Fixing cover; 42. Oil storage recessed hole; 43. Sponge block; 5. Placement hole; 51. Protective cover; 511. Anti-slip block; 52. Connecting hole; 6. End cover; 61. Support rod; 62. Vertical groove; 63. Horizontal groove; 64. Support rod; 65. Positioning recessed hole; 66. Mounting recessed hole; 67. Elastic part; 68. Positioning bead; 7. Sealing ring; 81. Crankshaft; 82. Connecting sleeve; 83. Piston rod; 84. Main engine. DETAILED DESCRIPTION

[0030] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0031] Embodiment 1: A pump end cover connection structure includes a box body 1, and a bottom plate 2 is fixedly connected to the lower end of the box body 1 by bolts. A water storage arc surface 21 is provided on the side of the bottom plate 2 facing the box body 1. A vertically arranged oil injection pipe 22 is fixedly connected to the bottom plate 2, and the upper end of the oil injection pipe 22 extends from the water storage arc surface 21. A sealing plug (not shown in the figure) is fixedly connected to the oil injection pipe 22.

[0032] A piston hole 3 is formed at one end of the box body 1 facing away from the bottom plate 2. A mounting hole 4 is formed at one side of the box body 1. A fixing cover 41 is fixedly connected to the box body 1. The mounting hole 4 is located inside the fixing cover 41.

[0033] A placement hole 5 is provided on a side of the box body 1 facing away from the mounting hole 4 . A protection cover 51 is fixedly connected to the box body 1 by bolts. The placement hole 5 is located inside the protection cover 51 .

[0034] A connecting hole 52 coaxially arranged with the placement hole 5 is provided on the protective cover 51, and a support rod 61 is fixedly connected to the inner wall of the placement hole 5, and the support rod 61 is coaxially arranged with the placement hole 5. A vertical groove 62 and a horizontal groove 63 are provided on the side wall of the end cover 6, and the vertical groove 62 is connected with the end surface of the end cover 6, and the length direction of the vertical groove 62 is arranged along the axial direction of the end cover 6. One end of the horizontal groove 63 is connected with the vertical groove 62, so that an L-shaped structure is formed between the vertical groove 62 and the horizontal groove 63. After the support rod 61 corresponds to the vertical groove 62, the end cover 6 is rotated and the support rod 61 is moved into the horizontal groove 63, and a support rod 64 arranged in an L shape is fixedly connected to the outer wall of the end cover 6.

[0035] A positioning recessed hole 65 is provided on the edge of the end cover 6, a mounting recessed hole 66 with a circular cross section is provided on the inner wall of the placement hole 5, and an elastic member 67 is fixedly connected to the bottom wall of the mounting recessed hole 66. The elastic member 67 is a spring. A positioning bead 68 for embedding in the positioning recessed hole 65 is fixedly connected to one end of the elastic member 67 away from the bottom wall of the mounting recessed hole 66. The positioning bead 68 is slidably connected to the mounting recessed hole 66.

[0036] The end cap 6 is placed in the connection hole 52 and moved toward the placement hole 5, the support rod 61 is placed in the vertical groove 62, and the support rod 64 is grasped and the end cap 6 is rotated to place the support rod 61 in the horizontal groove 63. At the same time, a small part of the positioning bead 68 is embedded in the positioning concave hole 65, and most of the positioning bead 68 is located in the installation concave hole 66. Due to the elastic force of the elastic member 67, there is a large friction between the positioning bead 68 and the positioning concave hole 65 to limit the rotation of the end cap 6.

[0037] A sealing ring 7 is fixedly connected to the outer wall of the end cover 6 , and the sealing ring 7 is tightly pressed against the inner wall of the placement hole 5 .

[0038] An anti-dropping block 511 is fixedly connected to the side of the protective cover 51 facing away from the box body 1 . The anti-dropping block 511 is inclined in a direction away from the end cover 6 . The anti-dropping block 511 is used to abut against the end cover 6 .

[0039] Embodiment 2: An electric crankshaft pump, comprising a crankshaft 81, a connecting sleeve 82, a piston rod 83, a main engine 84 and a pump end cover 6 connection structure in Embodiment 1. The crankshaft 81 is located in the housing 1 and one end is rotatably connected to the fixed cover 41, and the other end of the crankshaft 81 is rotatably connected to the end cover 6. The connecting sleeve 82 is rotatably connected to the crankshaft 81. One end of the piston rod 83 is hinged to the connecting sleeve 82, and the other end of the piston rod 83 passes through the piston hole 3 and is slidably connected to the main engine 84. The main engine 84 is fixed to the upper end of the housing 1.

[0040] An oil storage recess 42 is formed on the inner wall of the fixed cover 41 , and a sponge block 43 is filled in the oil storage recess 42 .

[0041] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A pump end cover connection structure, comprising a box body (1), one end of the box body (1) is connected to a bottom plate (2), the end of the box body (1) facing away from the bottom plate (2) is provided with a piston hole (3), one side of the box body (1) is provided with a mounting hole (4), a fixing cover (41) is fixedly connected to the box body (1), the mounting hole (4) is located inside the fixing cover (41), a placement hole (5) is provided on the side of the box body (1) facing away from the mounting hole (4), a protective cover (51) is fixedly connected to the box body (1), the placement hole (5) is located inside the protective cover (51), and the characteristics are: The protective cover (51) further comprises an end cover (6), wherein a connecting hole (52) is provided on the protective cover (51), a support rod (61) is fixedly connected to the inner wall of the placement hole (5), a vertical groove (62) and a horizontal groove (63) are provided on the side wall of the end cover (6), the vertical groove (62) is communicated with the end surface of the end cover (6), one end of the horizontal groove (63) is communicated with the vertical groove (62), and after the support rod (61) corresponds to the vertical groove (62), the end cover (6) is rotated and the support rod (61) is moved into the horizontal groove (63), and a support rod (64) is connected to the outer wall of the end cover (6).

2. A pump end cover connection structure according to claim 1, characterized in that: A positioning recessed hole (65) is provided on the edge of the end cover (6), a mounting recessed hole (66) is provided on the inner wall of the placement hole (5), an elastic member (67) is fixedly connected inside the mounting recessed hole (66), a positioning bead (68) for embedding in the positioning recessed hole (65) is fixedly connected to the elastic member (67), and the positioning bead (68) is slidably connected in the mounting recessed hole (66).

3. A pump end cover connection structure according to claim 2, characterized in that: An anti-slip block (511) is fixedly connected to the side of the protective cover (51) facing away from the box body (1); the anti-slip block (511) is inclined in a direction away from the end cover (6); and the anti-slip block (511) is used to contact the end cover (6).

4. A pump end cover connection structure according to claim 1, characterized in that: A water storage arc surface (21) is provided on one side of the bottom plate (2) facing the box body (1).

5. A pump end cover connection structure according to claim 4, characterized in that: An oil injection pipe (22) is fixedly connected to the bottom plate (2), the oil injection pipe (22) extends from the water storage arc surface (21), the oil injection pipe (22) faces the piston hole (3), and a sealing plug is connected to the oil injection pipe (22).

6. An electric crankshaft pump, comprising a crankshaft (81), a connecting sleeve (82), a piston rod (83), and a main engine (84), characterized in that: It also includes a pump end cover connection structure as described in any one of claims 1 to 5, wherein the crankshaft (81) is located in the casing (1) and one end is rotatably connected to the fixed cover (41), the other end of the crankshaft (81) is rotatably connected to the end cover (6), the connecting sleeve (82) is rotatably connected to the crankshaft (81), one end of the piston rod (83) is hinged to the connecting sleeve (82), the other end of the piston rod (83) passes through the piston hole (3) and is slidably connected to the main engine (84), and the main engine (84) is fixed to the casing (1).

7. An electric crankshaft pump according to claim 6, characterized in that: An oil storage concave hole (42) is provided on the inner wall of the fixed cover (41), and a sponge block (43) is filled in the oil storage concave hole (42).

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