JP2001271762A - Plunger type pump device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pump device capable of facilitating maintenance such as exchange of a V-packing for a plunger in a pump, in the pump for applying high pressure on a fluid when a material in a raw material fluid is atomized. SOLUTION: The sleeve provided with a V-packing is detachably fixed to an anti-crankshaft side of a crank case, a tip end of the plunger connected to the crank shaft by a connecting rod is extendedly disposed in a space of the sleeve penetrating the V-packing, a hole communicated with the space, a recessed taper, and a female screw are disposed on an anti-fixing side end part of the sleeve, a hole communicating with a communicating hole, a recessed taper, and a female screw are disposed on one part of an adapter having a check valve for intake and deliver and having the communicating hole communicated with the both check valves. A piping member is disposed, which is composed of a pipe provided with projection tapers on both ends, a sheath for screwing in reverse into the pipe, and a hexagon cap nut with a female screw which is brought into contact with the sheath. The sleeve and the adapter are joined with each other by screwing the female screw by the pipe member, and the space and the communicating hole are constituted as a high pressure chamber at the time of delivery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plunger which is optimal for applying a high pressure to a fluid when pressurizing various raw material fluids in all industries such as chemicals, foods and pharmaceuticals and atomizing substances in the fluids. The present invention relates to a pump device.

[0002]

2. Description of the Related Art A plunger pump is well known as a pump which applies a high pressure to a fluid, particularly a triple pump. This is a triple type plunger which is connected to a crankshaft rotatably supported by a crankcase by a connecting rod and reciprocates to generate high pressure. The distal end of the plunger faces a space serving as a pressure chamber, and this space communicates with the suction side and the discharge side of the raw material fluid through a check valve for suction and a check valve for discharge. Thus, a single pressure chamber is formed by the chamber between the two check valves and the space. At this time, a strong V or square packing is fitted to the plunger tip shaft so as to prevent the fluid from leaking from the pressure chamber, thereby forming a seal for the shaft. In addition, since the discharge pressure is high in the triple type, a block that can be regarded as a lump of iron is used in consideration of the installation of the check valve and the connection of the pipes, and this is divided into ABC manifolds, and each of the blocks is divided into three blocks. Is formed and attached to the crankcase. Conventional pumps thereby provide one
By applying a high pressure of about 50 MPa and pouring into a generator for atomization at a high pressure and a high speed, the substance in the raw material can be atomized to the order of microns.

[0003]

However, the conventional pump has a major problem in performing maintenance such as maintenance and inspection. That is, the V or square packing is worn due to the reciprocating motion of the plunger, and the check valve is worn. For this reason, it is necessary to perform maintenance of the V or square packing and disassembly check and replacement of the check valve at any time.However, since the block attached to the crankcase is high in mass of iron because it holds high pressure, Difficult to handle,
Moreover, it was not economical in terms of resources.

Accordingly, the present invention has been made to solve the above-mentioned problems.
An object of the present invention is to provide a plunger-type pump device that is advantageous from the viewpoint of maintenance and resource economy.

[0005]

The present invention has the following configuration in order to solve the above-mentioned problems.

[0006] [1] A plunger is supported on a crankcase movably in an axial direction, and one end of the plunger is connected to a crankshaft rotatably provided on the crankcase by a connecting rod. A sleeve provided with a V or square packing is detachably fixed to the opposite side of the crankshaft, and the other end of the plunger extends through the V or square packing into the inner space of the sleeve. A hole communicating with the space at an end on the fixed side,
A concave or convex taper around the hole and a female or male screw are provided, and a check valve for suction and a check valve for discharge are provided,
And, an adapter having a communication hole communicating the two check valves is provided, and a hole communicating with the communication hole, a concave or convex taper around the hole, and a female or male screw are provided in a part of the adapter. On the other hand, on the other hand, a tube having a convex or concave taper at the tip, a sheath screwed in the tube with a reverse screw, and a male or female threaded cap nut in contact with the sheath at both ends are provided.
The cap nuts are respectively screwed to the end of the sleeve and a part of the adapter so that the convex taper is in close contact with the concave taper so that the space of the sleeve communicates with the communication hole of the adapter. A plunger type pump device comprising a high pressure pipe joint.

[Claim 2] In the plunger type pump device according to claim 1, the pump is a triple type pump whose phase is shifted by 120 ° in the rotational direction, and the three adapters are used for suction at both ends. A check valve communicates with the first communication pipe via a normal pressure pipe joint, and a discharge check valve communicates with the second communication pipe via another high pressure pipe joint. A plunger-type pump device characterized in that it communicates.

The present invention operates as follows by the above configuration.

That is, in the first aspect, a high-pressure pipe joint is constituted by an adapter having a check valve for suction and discharge, and a pipe member provided with a sheath of a reverse screw and a cap nut on both ends. By loosening the pipe joint from the sleeve on the crankcase side, the sleeve can be removed from the crankcase.Inspection, repair, replacement of the V or square packing on the sleeve, and disassembly and inspection of the check valve, Exchange is easy. The pipe joint can be composed of a hexahedron with a three-way opening for the main part of the adapter, and the pipe member can be made of a hollow circular tube, making it extremely lightweight, so that maintenance is easy and resources are economical. It becomes.

According to a second aspect of the present invention, the pump is a triple type plunger type pump, and the suction side of the three pipe joints is connected to the first communication pipe through a normal pipe joint, and the discharge side is another high pressure pipe joint. Since the second communication pipe communicates with the second communication pipe, the pressure is high, the vibration is small, the weight is small, and resources are economical.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A triple-type plunger type pump device according to an embodiment of the present invention will be described with reference to FIGS.

FIG. 2 showing a vertical cross section in the center of FIG. 1 shows the connecting rod 8 and the plunger 9 separately in a reciprocating state of upper and lower halves. FIG. 2 and FIG. , The crankcase 1 is formed of a horizontal box, in which the crankshaft 2 is rotatably supported around the horizontal axis, the lid 3 is fixed to the right end with bolts 4, and lubricating oil is lubricated inside. By removing it, it can be injected up to half height. At the center and under the lid 3, there are a viewing window 6 for checking lubricating oil and a drain plug 7 for discharging.

A large end of a connecting rod 8 is connected to the crankshaft 2 which is connected to be driven by a motor such as a motor. Since there are three connecting rods, a triple type having a phase shift of 120 degrees in the rotating direction is provided. It has become something. The small end of the connecting rod 8 is connected to a piston 9 a of a plunger 9 by a piston pin 10. The piston 9a can slide (reciprocate) in the cylinder portion 1a of the crankcase 1 with a stroke of 2R by the rotation of the large end of the connecting rod 8 accompanying the rotation of the crankshaft 2 with the crank radius R. I have.

In FIG. 2 and FIG. 3 showing the left half of FIG. 2, the plunger 9 has a bolt 9
And a small-diameter portion 9c made of ceramic connected to the middle-diameter portion 9b by a central thin screw.
Is incorporated. The small-diameter portion 9c is supported by a holder 13 that is detachably attached to the left end of the crankcase 1 with a stud nut 12. The holder 13 is positioned on the mounting surface with respect to the crankcase 1 by a knock pin 14 (see FIG. 6), and the bearing 15, the first oil seal 16, the second oil seal 17, and the bearing 18 are aligned well inside. Prepare. In addition, as needed, the holder 13
Connect a cooling water pipe to prevent heat generation due to plunger sliding.

A cylindrical sleeve 19 is screwed and fixed to the left end of the holder 13, and the tip of the small-diameter portion 9 c of the plunger 9 extends to its internal space 20. The rectangular packing 21 partitions the space 20 so as to be isolated from the lubricating oil chamber. At the left end of the sleeve 19, a hole 22 communicating with the space 20, a concave taper 23 around the hole 22, a female screw 24
Are provided.

In FIG. 3 and FIG. 5 showing the essential part of the pipe joint shown in FIG. 3, a pipe member 28 is screwed into the pipe 27 having a circular cross section having a convex taper 29 at both ends and a small pitch reverse screw. A sheath 25 and a cap nut 2 with an external thread in contact with the sheath 25
6

The adapter 30 has a check valve 31 for suction (open at the return stroke of the plunger and stops at the forward stroke) at the lower surface, and has a check valve for discharge at the upper surface (at the time of discharge, ie, at the time of discharge). The plunger has a hexahedral structure having a communication hole 33 for communicating the two check valves inside, and a part of the communication hole 33 communicating with the communication hole 33. , A concave taper 35, and a female screw 36.

Here, the connection between the sleeve 19 and the adapter 30 is performed as follows. That is, the both ends of the pipe member 28 are applied to the left end of the sleeve 19 and the right end of the adapter 30, respectively. When the cap nut 26 with the male thread is screwed into the female screw, the tip of the cap nut 26 pushes the sheath 25 and the sheath pressure is applied by the contact pressure. 25 is the number of times. However, since the sheath 25 and the tube 27 are reverse-threaded, the rotational force of the sheath 25 acts in the direction in which the tube 27 is pushed out, causing the convex and concave tapers at the tip to come into close contact with each other. The larger the rotational force of the cap nut 26, the closer the taper is to each other, and the co-rotation of the sheath 25 and the tube 27 is prevented, so that the degree of close contact of the tube tip is increased. Thereby, the sleeve 19
The space between the two check valves of the space 20 and the adapter 30, that is,
The communication hole 33 communicates with the pipe 27 to form one sealed pressure chamber. This chamber withstands high pressure during discharge (forward stroke). Therefore, the pipe member 28 and the adapter 3
Numeral 0 designates a high-pressure pipe joint 37 using lightweight components.

As shown in FIG. 7, the three adapters 30 each have a normal pressure (at the time of discharge) connected to a ball check valve 31 for suction (a suction of a raw material fluid indicated by an arrow 44). Is stopped by the check valve 31 and the pressure is not applied beyond the check valve 31).
At the time of inhalation, and the upper part is connected to the second through a high pressure pipe joint 40 connected to the ball-shaped check valve 32 for discharge (discharge of the raw material fluid indicated by the arrow 45). Are communicated with each other at the time of discharge by the communication pipe 41. Another high-pressure pipe joint 40 has substantially the same configuration as the high-pressure pipe joint 37 having the reverse-threaded sheath described above.

As described above, the above-described structure has an inhalation,
Even if the pressure chamber for discharge is of a triple type, three separate lightweight pipe joints are prepared and these are connected by one communication pipe, so the conventional branch passage is built in. It is not necessary to use such a block, and the weight is extremely reduced. Therefore, maintenance and inspection of the V or square packing 21, the check valve 31 for suction, and the check valve 32 for discharge can be easily performed.

In FIG. 1 and FIG. 2, the pump device has left and right bosses 4 for fixing the right main body to a base (not shown).
The pressure chamber components provided with the two check valves on the left side are appropriately fixed together with the piping group to a stand (not shown) or the like. Then, at the time of inspection and repair, by removing the fixed side of the base and making the balance free with the lifting eye bolt 43, the connection and loosening of the pipe joint 37 can be loosened and removed.

The present invention is not limited to the above embodiment, but may be a single plunger type or a type having four or more stations. In the former case, since the first and second communication pipes are unnecessary, only one pipe joint for high pressure is required, which is very lightweight and easy to handle.

[0023]

According to the present invention, there is provided a plunger type pump device which is lightweight, easy to maintain, and economical in resources, and is most suitable as a pump used for atomizing raw materials. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view of a triple-type plunger pump device according to the present invention.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, showing a plunger and a connecting rod divided into upper and lower reciprocating states.

FIG. 3 is a diagram showing a left half of FIG. 2;

FIG. 4 is a diagram showing a right half of FIG. 2;

FIG. 5 is a view showing a main part of the pipe joint shown in FIG. 3;

FIG. 6 is a view of FIG. 1 viewed from above.

FIG. 7 is a diagram of FIG. 1 viewed from the left.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crankcase 2 Crankshaft 3 Lid 8 Connecting rod 9 Plunger 9a Piston 9b Medium diameter part 9c Small diameter part 10 Piston pin 13 Holder 19 Sleeve 20 Space 21 V or square packing 22 Hole 23 Concave taper 24 Female screw 25 Sheath 26 Male screw cap nut 27 pipe 28 pipe member 29 convex taper 30 adapter 31 check valve for suction 32 check valve for discharge 33 communication hole 34 hole 35 concave taper 36 female screw 37 high-pressure pipe joint 38 normal-pressure pipe joint 39 first Communication pipe 40 Pipe joint for another high pressure 41 Second communication pipe

Continued on front page F term (reference) 3H070 AA04 AA07 BB02 BB07 BB23 BB25 CC33 CC34 DD01 DD91 3H071 AA01 BB01 BB12 BB13 CC33 CC35 DD06 3H075 AA01 AA09 AA16 BB03 BB16 BB20 CC34 CC37 DA03 DB03 DB29

Claims (2)

[Claims] 1. A crankshaft, wherein a plunger is movably supported in an axial direction, and one end of the plunger is connected to a crankshaft rotatably provided on the crankcase by a connecting rod. V on the side
Or fix the sleeve of square packing arrangement detachably,
The other end of the plunger extends through the V or the square packing into the inner space of the sleeve, and a hole communicating with the space at an end of the sleeve opposite to the fixed side, a recess around the hole or An adapter having a convex taper, a female or male screw, a check valve for suction and a check valve for discharge, and a communication hole communicating the two check valves is provided. A hole communicating with the communication hole, a concave or convex taper around the hole, and a female or male screw are provided in one part, while a tube having a convex or concave taper at the tip and a reverse A tube member provided at both ends with a sheath threaded with a screw and a male or female threaded cap nut in contact with the sheath is provided, and the cap nuts are respectively provided at an end of the sleeve and a part of the adapter. By screwing the convex taper closely to the concave taper, So as to communicate the space of the probe to the communication hole of the adapter, a plunger pump apparatus characterized by comprising constituting the tube contact hand for high pressure. 2. A plunger type pump device according to claim 1, wherein said pump is a triple type pump having a phase shift of 120 ° in the rotational direction, and said three adapters are suction check valves at both ends. Are connected with the first communication pipe via a normal pressure pipe joint, and the discharge check valve is communicated with the second communication pipe via another high pressure pipe joint. A plunger type pump device characterized in that: