Crankshaft pump with long service life

Abstract

The utility model discloses a long-service-life crankshaft pump which comprises a pump body, a crankshaft is arranged in the pump body, a pump water tank is arranged on one side of the pump body, and a water inlet channel and a water outlet channel are respectively arranged in the pump water tank. A water inlet channel and a water outlet channel of the pump water tank are communicated through a plurality of water channels, plunger cavities communicated with the water channels are formed in the pump body, and plungers corresponding to the plunger cavities are arranged on the crankshaft. A ceramic plug block moving along the plunger cavity is arranged on the plunger; the ceramic plug block is fixed to the end of the plunger through a dismounting mechanism, the dismounting mechanism comprises a threaded section arranged at the front end of the plunger, and a threaded hole for the threaded section to be screwed in through threads is formed in the ceramic plug block. According to the utility model, the plunger is provided with the ceramic plug block which moves along the plunger cavity, and the ceramic plug block has the characteristic of good wear resistance, so that the ceramic plug block is not easy to wear in the process of reciprocating along the plunger cavity, and the service life is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field related to crankshaft pumps, in particular to a long-life crankshaft pump. Background Art

[0002] The crankshaft pump is an important device in the hydraulic system. It relies on the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber to achieve water absorption and water pressure. The crankshaft pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow regulation. Crankshaft pumps are widely used in high pressure, large flow and flow regulation occasions, such as hydraulic presses, engineering machinery and ships. Existing crankshaft pumps usually use metal rods as plungers, which have poor wear resistance and short service life. Utility Model Content

[0003] In order to solve the defects in the prior art that the existing crankshaft pumps usually use metal rods as plungers, have poor wear resistance and short service life, the utility model provides a crankshaft pump with a long service life.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model discloses a long-life crankshaft pump, comprising a pump body, a crankshaft is arranged in the pump body, a pump water box is arranged on one side of the pump body, a water inlet channel and a water outlet channel are respectively arranged in the pump water box; the water inlet channel and the water outlet channel of the pump water box are connected by a plurality of water passages, a plunger cavity connected with each water passage is arranged in the pump body, plungers corresponding to the plunger cavity are respectively arranged on the crankshaft; a ceramic plug block moving along the plunger cavity is arranged on the plunger; the ceramic plug block is fixed to the end of the plunger via a disassembly mechanism, the disassembly mechanism comprises a threaded section arranged at the front end of the plunger, a threaded hole for the threaded section to be screwed in is arranged on the ceramic plug block, and a counter-locking nut is arranged on the threaded section.

[0006] As a preferred technical solution of the utility model, the cross section of the plunger cavity is elliptical, and the cross section of the ceramic plug block is adapted to the cross-sectional profile of the plunger cavity.

[0007] As a preferred technical solution of the utility model, the ceramic plug block includes an internal center block, and a ceramic wear-resistant layer is arranged on the periphery of the center block.

[0008] As a preferred technical solution of the utility model, the thickness of the ceramic wear-resistant layer is 5-10 mm.

[0009] As a preferred technical solution of the utility model, the center block is made of steel, and the counter-locking nut is provided with a magnet that attracts the center block.

[0010] As a preferred technical solution of the utility model, a rubber pad is provided between the counter-locking nut and the center block.

[0011] As a preferred technical solution of the present utility model, the plastic part is provided with a groove for installing the charging interface.

[0012] The beneficial effects of the utility model are:

[0013] 1. This type of long-life crankshaft pump has a ceramic plug block on the plunger that moves along the plunger cavity. The ceramic plug block has the characteristic of good wear resistance. It is not easy to be worn during the reciprocating movement along the plunger cavity, thereby effectively improving the service life. The ceramic plug block is connected to the front end of the plunger by a thread, which is convenient for installation and disassembly. The connection is hidden on the back side of the ceramic plug block, which does not affect the normal movement of the ceramic plug block. The reverse locking is performed by a reverse locking nut to prevent the ceramic plug block from rotating and falling off.

[0014] 2. The cross section of the plunger cavity in this long-life crankshaft pump is elliptical, and the cross section of the ceramic plug block is adapted to the cross-sectional profile of the plunger cavity, which serves to limit the ceramic plug block and prevents it from rotating.

[0015] 3. The ceramic plug block in this long-life crankshaft pump includes an internal center block, and a ceramic wear-resistant layer is arranged on the periphery of the center block, which effectively reduces the usage of ceramic wear-resistant materials and thus reduces the use cost.

[0016] 4. In this type of long-life crankshaft pump, a magnet that attracts the center block is provided on the anti-locking nut. Under the action of the magnet, a certain fixing force is provided between the anti-locking nut and the center block, thereby preventing the anti-locking nut from separating from the center block. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a long-life crankshaft pump of the utility model;

[0019] Figure 2 This is a schematic diagram of the installation of a ceramic plug block of a long-life crankshaft pump of the utility model;

[0020] Figure 3 This is a structural schematic diagram of a ceramic plug block of a long-life crankshaft pump of the utility model;

[0021] Figure 4The utility model is a schematic structural diagram of a water outlet channel of a long-life crankshaft pump.

[0022] In the figure: 1. pump body; 2. crankshaft; 3. water inlet channel; 4. water outlet channel; 6. water channel; 7. plunger; 8. ceramic plug block; 9. threaded section; 10. threaded hole; 11. anti-locking nut; 12. center block; 13. ceramic wear-resistant layer; 14. magnet. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0024] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model is a long-life crankshaft pump, comprising a pump body 1, wherein a crankshaft 2 is arranged in the pump body 1, a pump water box 15 is arranged on one side of the pump body 1, and a water inlet channel 3 and a water outlet channel 4 are respectively arranged in the pump water box 15; the water inlet channel 3 and the water outlet channel 4 of the pump water box 15 are connected through a plurality of water channels, a plunger cavity 6 connected with each water channel is arranged in the pump body 1, and plungers 7 corresponding to the plunger cavity 6 are respectively arranged on the crankshaft 2; a ceramic plug block 8 moving along the plunger cavity 6 is arranged on the plunger 7; the ceramic plug block 8 is fixed to the end of the plunger 7 via a disassembly mechanism, and the disassembly mechanism includes a threaded section 9 arranged at the front end of the plunger 7, a threaded hole 10 for the threaded section 9 to be screwed into is arranged on the ceramic plug block 8, and a counter-locking nut 11 is arranged on the threaded section 9. By providing a ceramic plug block 8 on the plunger 7 to move along the cavity of the plunger 7, wherein the ceramic plug block 8 has the characteristic of good wear resistance, it is not easy to be worn during the reciprocating movement along the cavity of the plunger 7, thereby effectively improving the service life; wherein the ceramic plug block 8 and the front end of the plunger 7 are connected by threads, which has the characteristics of easy installation and disassembly, and the connection is hidden on the back side of the ceramic plug block 8, which does not affect the normal movement of the ceramic plug block 8, and reverse locking is performed by the anti-locking nut 11 to prevent the ceramic plug block 8 from rotating and falling off.

[0025] The cross section of the plunger cavity 6 is elliptical, and the cross section of the ceramic plug block 8 is adapted to the cross-sectional profile of the plunger cavity 6, which serves to limit the ceramic plug block and prevents it from self-rotating.

[0026] The ceramic plug block 8 includes an inner central block 12, and a ceramic wear-resistant layer 13 is arranged on the periphery of the central block 12, which effectively reduces the usage of ceramic wear-resistant materials and thus reduces the usage cost.

[0027] The ceramic plug block 8 includes an inner central block 12 , and a ceramic wear-resistant layer 13 is disposed on the periphery of the central block 12 .

[0028] The center block 12 is made of steel, and the reverse locking nut 11 is provided with a magnet 14 that attracts the center block 12, so that there is a certain fixing force between the reverse locking nut and the center block, thereby preventing the reverse locking nut and the center block from separating.

[0029] A rubber pad is provided between the reverse locking nut 11 and the center block 12 to prevent the reverse locking nut 11 and the center block 12 from contacting each other and rusting together.

[0030] When working, this kind of long-life crankshaft pump has a ceramic plug block 8 that moves along the plunger 7 cavity on the plunger 7, wherein the ceramic plug block 8 has the characteristic of good wear resistance, and is not easily worn during the reciprocating movement along the plunger 7 cavity, thereby effectively improving the service life; wherein the ceramic plug block 8 and the front end of the plunger 7 are connected by threads, which has the characteristics of easy installation and disassembly, and the connection is hidden on the back side of the ceramic plug block 8, which does not affect the normal movement of the ceramic plug block 8, and is reversely locked by the anti-locking nut 11 to prevent the ceramic plug block 8 from rotating and falling off.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A long-life crankshaft pump, comprising a pump body (1), wherein a crankshaft (2) is arranged in the pump body (1), a pump water box (15) is arranged on one side of the pump body (1), wherein a water inlet channel (3) and a water outlet channel (4) are respectively arranged in the pump water box (15); the water inlet channel (3) and the water outlet channel (4) of the pump water box (15) are connected through a plurality of water channels, a plunger cavity (6) connected to each water channel is arranged in the pump body (1), and plungers (7) corresponding to the plunger cavities (6) are respectively arranged on the crankshaft (2); the characteristics are as follows: The plunger (7) is provided with a ceramic plug (8) that moves along the plunger cavity (6); the ceramic plug (8) is fixed to the end of the plunger (7) via a disassembly mechanism, the disassembly mechanism comprising a threaded section (9) arranged at the front end of the plunger (7), the ceramic plug (8) being provided with a threaded hole (10) for the threaded section (9) to be screwed into, and the threaded section (9) being provided with a counter-locking nut (11).

2. A long-life crankshaft pump according to claim 1, characterized in that: The cross section of the plunger cavity (6) is elliptical, and the cross section of the ceramic plug block (8) is compatible with the cross-sectional profile of the plunger cavity (6).

3. A long-life crankshaft pump according to claim 1, characterized in that: The ceramic plug block (8) comprises an internal central block (12), and a ceramic wear-resistant layer (13) is arranged on the periphery of the central block (12).

4. A long-life crankshaft pump according to claim 3, characterized in that: The thickness of the ceramic wear-resistant layer (13) is 5-10 mm.

5. A long-life crankshaft pump according to claim 3, characterized in that: The central block (12) is made of steel, and the counter-locking nut (11) is provided with a magnet (14) that attracts the central block (12).

6. A long-life crankshaft pump according to claim 5, characterized in that: A rubber pad is provided between the counter-locking nut (11) and the center block (12).

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