Cylinder hole pretreatment device for multi-cylinder engine

Abstract

The invention relates to the technical field of engine manufacturing, and discloses a cylinder hole pretreatment device used for a multi-cylinder engine, the cylinder hole pretreatment device comprises an upper pressing mechanism used for being arranged at the top of a multi-cylinder engine cylinder body in a pressing mode and a lower pressing mechanism used for being arranged at the bottom of the multi-cylinder engine cylinder body in a pressing mode, the upper pressing mechanism comprises an upper seat plate and a plurality of water spraying pipes, the downward pressing mechanism comprises a lower seat plate and one or more backflow pipes, the lower seat plate is provided with a first liquid passing hole, second liquid passing holes communicating with cylinder holes of the multi-cylinder engine cylinder body in a one-to-one correspondence mode and a liquid passing cavity communicating with the first liquid passing hole and the second liquid passing holes, the top face of the lower seat plate is matched with the bottom face of the multi-cylinder engine cylinder body in a sealed mode, and the backflow pipes are connected with the first liquid passing hole and the second liquid passing hole in a sealed mode. The return pipe penetrates through the lower seat plate, the upper part of the return pipe extends into the cylinder hole, the top surface of the return pipe is sealed, and a return hole is formed in the side wall of the top of the return pipe; the pipeline design is simplified, the liquid channeling risk can be reduced, the operation time is greatly shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of engine manufacturing, and in particular to a cylinder bore pre-treatment device for a multi-cylinder engine. Background Art

[0002] The pretreatment of the wear-resistant layer coating of the cylinder bore of a multi-cylinder engine is carried out by injecting liquid medicine into the cylinder bore (not full immersion). During the pretreatment process, the liquid medicine needs to fill the entire cylinder bore. After the liquid medicine treatment, the liquid medicine on the surface of the cylinder bore needs to be cleaned in a short time to avoid overreaction. Therefore, it is necessary to spray water inside the cylinder bore for cleaning. Therefore, the pipeline design requirements for the supply, reflux, cleaning and sealing of the liquid medicine are relatively high. The existing cylinder bore pretreatment method is mainly to squeeze and install a rubber seal on the top of each cylinder bore so that the top of the cylinder bore is sealed, and each cylinder bore is provided with a liquid medicine return pipe. During the pretreatment, the liquid medicine enters from the bottom of the cylinder bore, and then enters from the pipe opening on the top surface of the liquid medicine return pipe, and returns to the liquid medicine tank through the liquid medicine return pipe (the three-way valve at the end of the liquid medicine return pipe is switched to reflux); after the liquid medicine treatment is completed, the liquid medicine in the cylinder bore returns to the liquid medicine tank from the bottom of the cylinder bore. At the same time, the flow direction of the three-way valve at the end of the liquid medicine return pipe is switched, and the cylinder bore is sprayed through the water spraying part. Water and washing waste liquid will also enter the medicine liquid return pipe from the pipe opening on the top surface of the medicine liquid return pipe, and be discharged to the wastewater collection point through the three-way valve at the end of the medicine liquid return pipe. The washing waste liquid in the cylinder hole is discharged to the wastewater collection point from the bottom of the cylinder hole. After completing the pre-treatment of the cylinder hole of the multi-cylinder engine, there will still be a certain amount of medicine liquid residue on the sealing surface of the rubber seal. Therefore, the rubber seal needs to be cleaned after removal. It takes at least 2 minutes to install, remove and clean the rubber seal each time, which reduces production efficiency. In addition, the medicine liquid return pipe needs to return the medicine liquid and discharge the wastewater, and there is a risk of tank liquid leakage. Summary of the invention

[0003] The purpose of the present invention is to provide a cylinder bore pre-treatment device for a multi-cylinder engine, which simplifies the pipeline design, can reduce the risk of liquid blowby, greatly shorten the operation time, and improve production efficiency.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a cylinder bore pre-treatment device for a multi-cylinder engine, comprising an upper pressing mechanism for pressing on the top of a cylinder block of the multi-cylinder engine and a lower pressing mechanism for pressing on the bottom of the cylinder block of the multi-cylinder engine, the upper pressing mechanism comprising an upper seat plate and a water spray pipe, the water spray pipe being provided with a plurality of water spray pipes and being arranged one-to-one with the cylinder bores of the cylinder block of the multi-cylinder engine, the lower pressing mechanism comprising a lower seat plate and a return pipe, the lower seat plate being provided with a first liquid passage hole, a second liquid passage hole being connected one-to-one with the cylinder bores of the cylinder block of the multi-cylinder engine, and a liquid passage cavity connecting the first liquid passage hole and the second liquid passage hole, the top surface of the lower seat plate being sealed with the bottom surface of the cylinder block of the multi-cylinder engine, the return pipe being provided with one or more, the return pipe penetrating the lower seat plate and the upper part of the return pipe extending into the cylinder bore of the cylinder block of the multi-cylinder engine, the top surface of the return pipe being sealed, and the top side wall of the return pipe being provided with a return hole.

[0005] As a preferred solution of the present invention, the upper seat plate is provided with a plurality of water retaining panels which are arranged one-to-one corresponding to the cylinder holes of the multi-cylinder engine block, the water spray pipe is located in the inner cavity of the water retaining panel, the bottom surface of the water retaining panel is pressed against the top surface of the multi-cylinder engine block, and the water retaining panel is provided with an avoidance position which cooperates with the multi-cylinder engine block.

[0006] As a preferred solution of the present invention, the length of the water spray pipe is smaller than the length of the water retaining wall.

[0007] As a preferred solution of the present invention, the top of the reflux pipe is in an inverted cone shape, and the reflux hole is arranged on the top side wall of the inverted cone shaped reflux pipe.

[0008] As a preferred solution of the present invention, the return pipe is provided with one and extends into the cylinder hole at the center of the cylinder block of the multi-cylinder engine, and the return pipe is detachably connected to the lower seat plate.

[0009] As a preferred solution of the present invention, the bottom of the return pipe is provided with an external thread, the bottom of the return pipe is threadedly connected to the lower seat plate, and the bottom of the return pipe passes through the outside of the lower seat plate, and the upper part of the return pipe passes through the liquid passage chamber, the second liquid passage hole in sequence and extends into the cylinder hole of the multi-cylinder engine block.

[0010] As a preferred solution of the present invention, a sealing gasket is provided on the top surface of the lower seat plate and is sealed with the bottom surface of the multi-cylinder engine block.

[0011] As a preferred solution of the present invention, the inner wall of the first liquid passage hole is provided with an internal thread.

[0012] As a preferred solution of the present invention, the upper seat plate, the lower seat plate and the return pipe are all made of ABS plastic.

[0013] Compared with the prior art, the cylinder bore pre-treatment device for a multi-cylinder engine according to the embodiment of the present invention has the following beneficial effects:

[0014] When the present invention performs liquid medicine pretreatment, the upper pressing mechanism and the lower pressing mechanism respectively press the upper and lower ends of the cylinder body of the multi-cylinder engine, and the liquid medicine enters the upper seat plate from the first liquid passage hole and fills the liquid passage cavity, and then enters the cylinder hole of the multi-cylinder engine cylinder body through the second liquid passage hole. The liquid medicine in each cylinder hole is connected to the liquid passage cavity to balance the liquid level height in each cylinder hole. The liquid medicine in each cylinder hole can enter the reflux pipe from the reflux hole on the reflux pipe and directly flow back to the liquid medicine tank, and the reflux liquid level height of the liquid medicine can be adjusted by adjusting the installation height of the reflux hole on the reflux pipe. After the liquid medicine pretreatment is completed, water spray cleaning treatment is performed, and the multi-cylinder engine The medicine liquid in the cylinder hole of the cylinder body returns to the medicine liquid tank along the second liquid hole, the liquid cavity and the second liquid hole. Then the water spray pipe starts to spray water to clean the inner cavity of each cylinder hole to remove the residual medicine liquid. At the same time, the top surface sealing design of the return pipe can effectively block the spray water flow from entering the return pipe, avoiding the water washing waste liquid from flowing into the medicine liquid tank from the return pipe. There is no need to set a three-way reversing valve on the return pipe, reducing the risk of liquid leakage in the medicine liquid tank and simplifying the pipeline design. The upper seat plate is pressed on the top of the multi-cylinder engine cylinder body in an open press-fit manner, replacing the complex rubber seals, which can greatly shorten the operation time and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0016] Figure 1 It is a structural schematic diagram of an existing cylinder bore pre-treatment device during liquid pre-treatment;

[0017] Figure 2 It is a structural schematic diagram of the existing cylinder hole pre-treatment device during cleaning treatment;

[0018] Figure 3 A schematic diagram of the structure of a cylinder bore pre-treatment device for a multi-cylinder engine provided by the present invention during liquid pre-treatment;

[0019] Figure 4 A schematic structural diagram of a cylinder bore pre-treatment device for a multi-cylinder engine during cleaning treatment provided by the present invention;

[0020] Figure 5 A schematic diagram of the structure of the pressing mechanism provided by the present invention;

[0021] Figure 6 A schematic diagram of the structure of the pressing mechanism provided by the present invention;

[0022] In the figure, there are an upper pressure mechanism 1; an upper seat plate 11; a water spray pipe 12; a water retaining plate 13; a lower pressure mechanism 2; a lower seat plate 21; a first liquid hole 211; a second liquid hole 212; a liquid cavity 213; a reflux pipe 22; a reflux hole 221; a sealing gasket 23; a multi-cylinder engine block 3; a cylinder hole 31; a rubber seal 4; a three-way valve 5; a liquid medicine reflux pipe 6; and a water spray member 7. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top” and “bottom” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] like Figures 3 to 6 As shown, a cylinder bore pre-treatment device for a multi-cylinder engine according to a preferred embodiment of the present invention comprises an upper pressing mechanism 1 for pressing on the top of a cylinder block 3 of the multi-cylinder engine and a lower pressing mechanism 2 for pressing on the bottom of the cylinder block 3 of the multi-cylinder engine, wherein the upper pressing mechanism 1 comprises an upper seat plate 11 and a water spray pipe 12, wherein the water spray pipe 12 is provided with a plurality of water spray pipes 12 and is provided one-to-one with the cylinder bores 31 of the cylinder block 3 of the multi-cylinder engine, wherein the lower pressing mechanism 2 comprises a lower seat plate 21 and a return pipe 22, wherein the lower seat plate 21 is provided with a first liquid passage hole 211 and a return pipe 22 corresponding to the cylinder bores 31 of the cylinder block 3 of the multi-cylinder engine. The cylinder holes 31 of the cylinder block 3 are connected to the second liquid holes 212 and the liquid chamber 213 connecting the first liquid holes 211 and the second liquid holes 212 in a one-to-one correspondence. The top surface of the lower seat plate 21 is sealed with the bottom surface of the multi-cylinder engine block 3. One or more return pipes 22 are provided. The return pipe 22 passes through the lower seat plate 21 and the upper part of the return pipe 22 extends into the cylinder hole 31 of the multi-cylinder engine block 3. The top surface of the return pipe 22 is sealed, and the top side wall of the return pipe 22 is provided with a return hole 221.

[0026] When the present invention performs liquid medicine pretreatment, the upper pressing mechanism 1 and the lower pressing mechanism 2 respectively press the upper and lower ends of the multi-cylinder engine cylinder body 3, firstly place the multi-cylinder engine cylinder body 3 on the lower pressing mechanism 2, and then lower the upper pressing mechanism 1 to press the top of the multi-cylinder engine cylinder body 3, the liquid medicine first enters the upper seat plate 11 from the first liquid hole 211 and fills the liquid cavity 213, and then enters the cylinder hole 31 of the multi-cylinder engine cylinder body 3 through the second liquid hole 212, and the liquid medicine in each cylinder hole 31 is balanced under the effect of the connection of the liquid cavity 213, and the liquid medicine in each cylinder hole 31 can enter the reflux pipe 22 from the reflux hole 221 on the reflux pipe 22 and directly flow back to the liquid medicine tank, and the reflux liquid level of the liquid medicine can be adjusted by adjusting the installation height of the reflux hole 221 on the reflux pipe 22; After the pre-treatment of the medicine liquid is completed, a water spray cleaning treatment is performed. The medicine liquid in the cylinder hole 31 of the multi-cylinder engine cylinder body 3 returns to the medicine liquid tank along the second liquid hole 212, the liquid cavity 213 and the second liquid hole 212. Then the water spray pipe 12 starts the water spraying operation to clean the inner cavity of each cylinder hole 31 to remove the residual medicine liquid. At the same time, the top surface sealing design of the return pipe 22 effectively blocks the spray water flow from entering the return pipe 22, and prevents the washing waste liquid from flowing into the medicine liquid tank from the return pipe 22. There is no need to set a three-way reversing valve on the return pipe 22, which reduces the risk of liquid leakage in the medicine liquid tank, increases the life of the tank liquid, and simplifies the pipeline design; the upper seat plate 11 is pressed on the top of the multi-cylinder engine cylinder body 3 in an open press-fit manner, replacing the complex rubber seals, which can greatly shorten the operation time and improve production efficiency.

[0027] For example, Figure 5 As shown, the upper seat plate 11 is provided with a plurality of water retaining panels 13 which are arranged one by one corresponding to the cylinder holes 31 of the multi-cylinder engine block 3, the water spray pipe 12 is located in the inner cavity of the water retaining panel 13, the bottom surface of the water retaining panel 13 is pressed against the top surface of the multi-cylinder engine block 3, the water retaining panel 13 is provided with an avoidance position which cooperates with the multi-cylinder engine block 3, the water retaining panel 13 can prevent the overflow of the medicine at a certain height, and prevent the water spraying flow of the water spray pipe 12 from spraying out of the multi-cylinder engine block 3.

[0028] Specifically, the length of the water spray pipe 12 is shorter than the length of the water retaining panel 13 , so that the water spray pipe 12 can effectively flush the water retaining panel 13 and the entire cylinder hole 31 to avoid residual liquid medicine.

[0029] For example, Figure 6 As shown, the top of the reflux pipe 22 is in an inverted cone shape, and the reflux hole 221 is arranged on the top side wall of the inverted cone reflux pipe 22, so that the reflux hole 221 is located at the inclined surface to cooperate with the top surface of the reflux pipe 22 to block, effectively blocking the washing waste liquid from entering the reflux pipe 22 from the reflux hole 221.

[0030] Exemplarily, the return pipe 22 is provided with one and extends into the cylinder hole 31 at the center position of the multi-cylinder engine block 3. The return pipe 22 is detachably connected to the lower seat plate 21. The design of providing one return pipe 22 allows only the lower seat plate 21 to be replaced when the spacing between cylinder holes 31 of different cylinder blocks is different, and the return line (liquid supply line) connected to the lower seat plate 21 does not need to be replaced or adjusted. The design is compatible with more different types of cylinder blocks and has wider versatility.

[0031] Exemplarily, the bottom of the return pipe 22 is provided with an external thread, the bottom of the return pipe 22 is threadedly connected to the lower seat plate 21, and the bottom of the return pipe 22 passes through the lower seat plate 21, and the upper part of the return pipe 22 passes through the liquid chamber 213 and the second liquid hole 212 in sequence and extends into the cylinder hole 31 of the multi-cylinder engine block 3, so as to facilitate the rapid installation and disassembly of the return pipe 22.

[0032] Furthermore, if Figure 6 As shown, a sealing gasket 23 is provided on the top surface of the lower seat plate 21 to seal with the bottom surface of the multi-cylinder engine block 3, thereby improving the sealing performance between the lower seat plate 21 and the bottom surface of the multi-cylinder engine block 3.

[0033] Exemplarily, the inner wall of the first liquid passage hole 211 is provided with an internal thread. Specifically, the lower seat plate 21 is provided with a plurality of first liquid passage holes 211, and the pipeline is threadedly connected to the first liquid passage holes 211 on the lower seat plate 21 for easy assembly.

[0034] In this embodiment, since the pretreatment liquid is acid-base corrosive, the upper seat plate 11, the lower seat plate 21 and the return pipe 22 are all made of ABS plastic, which effectively prolongs the service life of the cylinder bore pretreatment device for a multi-cylinder engine.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A cylinder bore pre-treatment device for a multi-cylinder engine, characterized in that: The invention comprises an upper pressing mechanism for pressing on the top of a multi-cylinder engine block and a lower pressing mechanism for pressing on the bottom of the multi-cylinder engine block, the upper pressing mechanism comprises an upper seat plate and a water spray pipe, the water spray pipe is provided with a plurality of them and is arranged one-to-one with the cylinder holes of the multi-cylinder engine block, the lower pressing mechanism comprises a lower seat plate and a return pipe, the lower seat plate is provided with a first liquid hole, a second liquid hole connected with the cylinder holes of the multi-cylinder engine block in a one-to-one correspondence, and a liquid cavity connecting the first liquid hole and the second liquid hole, the top surface of the lower seat plate is sealed with the bottom surface of the multi-cylinder engine block, one or more return pipes are provided, the return pipe passes through the lower seat plate and the upper part of the return pipe extends into the cylinder hole of the multi-cylinder engine block, the top surface of the return pipe is sealed, and the top side wall of the return pipe is provided with a return hole.

2. The cylinder bore pre-treatment device for a multi-cylinder engine according to claim 1, characterized in that: The upper seat plate is provided with a plurality of water retaining panels corresponding to the cylinder holes of the multi-cylinder engine block, the water spray pipe is located in the inner cavity of the water retaining panel, the bottom surface of the water retaining panel is pressed against the top surface of the multi-cylinder engine block, and the water retaining panel is provided with an avoidance position cooperating with the multi-cylinder engine block.

3. The cylinder bore pre-treatment device for a multi-cylinder engine according to claim 2, characterized in that: The length of the water spray pipe is smaller than the length of the water retaining wall.

4. The cylinder bore pre-treatment device for a multi-cylinder engine according to claim 1, characterized in that: The top of the reflux pipe is in an inverted cone shape, and the reflux hole is arranged on the top side wall of the inverted cone shaped reflux pipe.

5. The cylinder bore pre-treatment device for a multi-cylinder engine according to claim 1, characterized in that: The return pipe is provided with one and extends into the cylinder hole at the center of the cylinder block of the multi-cylinder engine. The return pipe is detachably connected to the lower seat plate.

6. The cylinder bore pre-treatment device for a multi-cylinder engine according to claim 1, characterized in that: The bottom of the return pipe is provided with an external thread, the bottom of the return pipe is threadedly connected to the lower seat plate, and the bottom of the return pipe passes through the lower seat plate, and the upper part of the return pipe passes through the liquid passage cavity and the second liquid passage hole in sequence and extends into the cylinder hole of the multi-cylinder engine cylinder block.

7. The cylinder bore pre-treatment device for a multi-cylinder engine according to claim 1, characterized in that: A sealing gasket is provided on the top surface of the lower seat plate and is sealed with the bottom surface of the multi-cylinder engine body.

8. The cylinder bore pre-treatment device for a multi-cylinder engine according to claim 1, characterized in that: The inner wall of the first liquid passage hole is provided with an internal thread.

9. The cylinder bore pre-treatment device for a multi-cylinder engine according to claim 1, characterized in that: The upper seat plate, the lower seat plate and the return pipe are all made of ABS plastic.

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