KR200244093Y1 - Structure of combination with a front cover for high pressure pump cylinder - Google Patents

Abstract

The present invention relates to a coupling structure of a cylinder front cover for a high pressure pump coupled with a stud bolt and a nut to a coupling hole formed at both ends of the cylinder body of the high pressure pump for transporting various liquids using pressure, and more specifically, the coupling The coupling groove is inserted into the ball but one side outer peripheral surface is formed in the fixing groove for the packing can be elastically fixed, a relatively large outer diameter flange is formed on the other side and the inclined surface formed toward the other end, and at least one inserted into the coupling hole Receiving holes for accommodating the above-mentioned couplings at the same time is formed at a distance corresponding to the coupling hole, and includes a coupling plate correspondingly formed through the stud bolt formed in the cylinder body to pass through.

Therefore, the packing that is elastically fixed to the coupling hole by the high pressure generated inside the cylinder body is prevented from being separated from the inside of the coupling hole to the outside of the coupling hole, and by forming the receiving hole in the metal plate, cracking is also caused by the high pressure. This prevents damage caused by this occurrence, and provides a coupling structure of the cylinder front cover for the high pressure pump that can achieve a stable use even if bent by long use.

Description

Structure of combination with a front cover for high pressure pump cylinder}

The present invention relates to a coupling structure of a cylinder front cover for a high pressure pump coupled with a stud bolt and a nut to a coupling hole formed at both ends of the cylinder body of a high pressure pump for transporting various liquids using pressure, in particular, inside the cylinder body. It provides a coupling structure of the cylinder front cover for the high-pressure pump to ensure that the front cover maintains a strong coupling force even by high pressure generated, and at the same time not to be damaged even after long use.

In general, the high-pressure pump 1 is composed of a crankshaft powered by an electric motor, a connecting rod and a piston connected to the crankshaft, and means for generating pressure by linearly reciprocating the piston in a cylinder, as is well known. It is.

The high pressure pump 1 has an integrated front cover 3 and a rear cover 4 to simultaneously cover the three cylinders 2 on both sides of the high pressure pump 1 having the three cylinders 2 therein. Is fixed to the plurality of stud bolts (5) formed on both sides of the cylinder body (9), the front cover (3) and the rear cover (4) a plurality of through holes (6) to be fitted to the stud bolt (5) Is formed.

Here, a grease injection hole 8 is formed in the upper surface of the rear cover 4 so that grease can be supplied to the piston rod (not shown) and the packing 7, and the grease injection hole 8 is formed in the upper surface of the rear cover 4. By allowing the copper cap (not shown) or the nipple (not shown) to be combined, the grease may be more easily injected into the packing 7 installed inside the rear cover 4 and 4.

Therefore, when assembling the front cover 3 or the rear cover 4 to the cylinder body 9, the assembling time is shortened to improve workability. However, the conventional front cover 3 is integrally formed by casting. There is a disadvantage in that the durability is weak because it is a casting, accordingly, cracks occur in the front cover (3) that does not overcome the high pressure applied from the inside of the cylinder body (9) for a long time.

In addition, the packing (7) that is fixed by the front cover (3) is inserted into the front end of the coupling hole (10) to which the cover (3) is coupled is not squeezed or stretched due to high pressure, the fine gap This problem occurs, and this minute gap causes the development of a very fatal problem that reduces the efficiency of the high-pressure pump 1, thereby shortening the life of the product.

The present invention devised to solve the above problems, the higher the pressure is applied, the more the adhesion between the packing and the coupling hole is strengthened to maintain a more complete sealing state, the crack occurs in the front cover even under high pressure and eventually breakage The present invention also provides an object of providing a high-pressure pump excellent in assemblability as in the prior art while solving the problems.

1 is a view showing a coupling structure of a conventional front cover for a high pressure pump.

Figure 2 is a view showing a coupling structure of the cylinder front cover of the present invention.

Figure 3 is a view showing the structure of the coupler according to the present invention.

Explanation of Drawings

101-High pressure pump 102-Cylinder body 103-Joint hole

104-Stud Bolt 105-Nut 106-Packing

107-fixed groove 108-flange 109-inclined

110-Combination 111-Receptor 112-Through

113-mate plate (front cover) 114-rear cover

The above object, according to the present invention, the stud bolt 104 and the nut 105 in the coupling hole 103 formed on both ends of the cylinder body 102 of the high pressure pump 101 for transporting various liquids using pressure. In the coupling structure of the cylinder front cover for the high-pressure pump to be coupled, the coupling groove 103 is inserted into the coupling groove 103, the fixing groove 107 to which the packing 106 can be elastically fixed is linked, the relatively large outer diameter Receiving hole for accommodating the coupling hole 110 is formed on the other side and the inclined surface 109 is formed toward the other end and at least one coupling hole 110 inserted into the coupling hole 103 at the same time (111) is formed at an interval corresponding to the coupling hole 103, characterized in that it comprises a coupling plate 113 is formed through the through hole 112 corresponding to the stud bolt 104 formed in the cylinder body (102) It is achieved by the coupling structure of the cylinder front cover for the high pressure pump.

In addition, the coupling plate 113 is preferably formed by sheet metal processing of a metal plate material having a predetermined thickness.

Hereinafter, the configuration and operation of the present invention will be described in Figures 2 to 3.

First, as shown in the coupling hole 103 is inserted into the coupling hole 103 of the cylinder body 102, the packing 106 is elastically on the outer circumferential surface of the one direction in which the coupling sphere 110 is inserted The fixing groove 107 is formed to be connected to be fixed, and the elastic packing 106 is coupled to the fixing groove 107.

Here, the packing 106 coupled to the fixing groove 107 of the coupler 110 protrudes somewhat higher than the outer circumferential surface of the coupler 110, the coupling hole 110 is a predetermined depth in the coupling hole 103. A flange 108 having an outer diameter relatively larger than the inner diameter of the coupling hole 103 is formed in the coupling hole 110 to be inserted into the coupling hole 110.

Therefore, when the coupler 110 is coupled to the coupling hole 103, the fitting is prevented by the packing 106, and thus the elastic packing 106 contracts and is in close contact with the inner circumferential surface of the coupling hole 103. In this case, a seal is made.

When the coupler 110 is inserted into each coupling hole 103 by the above-described method, the receiving hole 111 of the coupling plate 113 may be firmly fixed to the coupling hole 103. The coupling plate 113 is coupled to the coupling sphere 110 so that the coupling plate 113 may be inserted into the inclined surface 109 formed at the other end of the coupling sphere 110.

At this time, the stud bolt 104 formed in the cylinder body 102 is inserted into the through hole 112 of the coupling plate 113, the nut to the stud bolt 104 protruding into the through hole 112 of the coupling plate 113. Tighten the 105 to maintain a firm coupling state.

After the front cover 113 is coupled to the cylinder body 102 in this way, a piston (not shown) and a piston rod (not shown) are coupled to the rear cover 114 side, and each component is assembled. When high pressure is generated in the cylinder body 102, the high pressure acts on the coupler 110, the packing 106 coupled to the fixing groove 107 of the coupler 110 by the high pressure expands Is elastically coupled by the fixing groove 107, because the state is in close contact with the inner circumferential surface of the coupling hole 103, even if it is expanded and pushed out of the cylinder body 102, rather coupled with the coupling sphere 110 It is tightly adhered to the lessons and acts as a strong sealing force.

In addition, the high pressure acting as the coupler 110 is firmly fastened and supported by the coupling plate 113, thereby maintaining a stable coupling state.

Here, the bonding plate 113 is formed using a metal plate material, so the durability is very strong and excellent ductility than the casting, so that the bonding plate 113 itself does not cause cracks or cracks can be achieved for a long time, For example, even if the coupling plate 113 itself is slightly bent by high pressure, the coupling plate 113 is rotated in the opposite direction to recombine, or simply replaced with a new component, the compatibility is very good.

As described above, the present invention can prolong the life of the product by preventing cracks or cracks in the joining plate even by high pressure generated inside the cylinder, and, of course, inserted into the joining hole by the generated high pressure. It is a very good design to improve the reliability of the product by preventing the high pressure in the cylinder to be released to the outside so that excellent sealing force can be generated when the packing is expanded.

Claims (2)

In the coupling structure of the cylinder front cover for the high pressure pump is coupled to the coupling hole formed at both ends of the cylinder body of the high pressure pump for transporting various liquids using pressure with a stud bolt and a nut, Inserted into the coupling hole, but the one side outer peripheral surface is formed in the coupling groove that the packing can be elastically fixed, the coupling of the relatively large outer surface flange is formed on the other side and the inclined surface toward the other end, High-pressure pump, characterized in that the receiving hole for accommodating at least one or more coupling holes inserted into the coupling hole at a time corresponding to the coupling hole, and the coupling plate corresponding to the through hole so that the stud bolt formed in the cylinder body passes therethrough. Structure of cylinder front cover. The method of claim 1, The coupling plate is a coupling structure of the cylinder front cover for a high-pressure pump, characterized in that formed by processing a sheet metal sheet metal of a predetermined thickness.