RU2536464C2 - Telescopic casing of rod coupling element - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to a casing 10 intended for pumping of liquid for slot packing (TSL) 12 by the hydraulic pressure line 14. The coupling element 18 connecting the rod 20 of the hydraulic pump piston to the rod 22 of the chemical pump can be demounted to perform maintenance of the chemical or hydraulic pump 24. Afterwards the joint of two casing parts 28 and 30 can be loosened. After in the course of loosening the end of the thread is reached, a small casing part 30 is moved inside the big casing part 28 to provide easy access to the coupling element 19 connecting the rods.

EFFECT: improved design.

2 cl, 2 dwg

Description

FIELD OF THE INVENTION

The invention relates to a housing for a piston rod connecting element.

State of the art

The invention is intended for use in multicomponent metering systems. Known ISO lubrication designs (for lubrication meeting the requirements of the International Organization for Standardization ISO) use a single housing-forming element made with a small hole to access the connection assembly. During the working cycle, this hole is closed with a plug, and before performing maintenance, it is removed with a tool. The use of the tool is necessary to remove the connecting element for connecting the rods through the access hole.

Disclosure of invention

The casing is designed for injection of packing fluid for slotted seals (TSL) through a hydraulic discharge line. The housing is telescopically folding, which allows easier and faster access to the pump connection without using a tool. The injection of ISO grease is essential for any pump containing moisture-sensitive chemicals, such as isocyanites, in order to isolate the chemical from moisture.

When the pump is operating, the ISO grease housing will be completely filled with ISO grease. For maintenance of a chemical or hydraulic pump, it is necessary to remove the connecting element that connects the piston rod of the hydraulic pump to the rod of the chemical pump. First, liquid must be removed from the housing by draining it, and then the lock nut can be removed by removing and removing it from a large part of the housing. After that, the threaded connection of two parts of the housing (two housing-forming parts) can be loosened manually. After the end of the thread is reached during the aforementioned weakening of the threaded connection, a small part of the housing is inserted inside a large part of the housing and as a result easy access to the rod connecting element is provided. The telescopic case when folded is shown in figure 2.

In order to eliminate the need to use tools in the proposed design, consisting of three elements, use corrugated surfaces. In addition, the structure is telescopically collapsible, and therefore, inspection or removal of the connecting element can easily be carried out if there is no need for a small access hole or any tool.

These and other objectives and advantages of the invention will be more fully disclosed in the following description, set forth in conjunction with the accompanying drawings, in which reference numbers in different images refer to the same or similar elements.

Brief Description of the Drawings

Figure 1 shows the connection node of the pumps with the housing in accordance with the invention installed in the working position, a sectional view;

figure 2 shows the connection node of the pumps with the housing according to the present invention installed in the position for maintenance, sectional view.

The implementation of the invention

The housing 10 is designed to pump fluid 12 for slotted seals (TSL) through a hydraulic discharge line 14. During operation, part 16 of the ISO grease housing (isocyanites) will be completely filled with ISO 12 grease. For maintenance of the chemical or hydraulic pump 24, the connector 18, which connects the piston rod 20 of the hydraulic pump to the chemical pump stem 22, must be removed . For this, the liquid 12 must first be drained from the housing 16 by draining, and then the connection of the two housing parts 28 and 30 can be loosened manually by screwing a small housing part 30 into a large housing part 28. After reaching the end of the connecting thread, a small part 30 of the housing is introduced into the large part 28 of the housing, which provides easy access to the connecting element 18 for connecting the rods. Figure 2 shows the telescopic housing in the folded state. For re-installation, the housing parts 28 and 30 are extended to the engagement position of the threads 32, while the housing 10 extends until it is located between the hydraulic actuator 36 and the pump 24. To seal the housing 10 and hold the TSL 12, o-rings 38 mounted on each end of the case.

In order to eliminate the need to use tools, corrugated surfaces 34 are used in a three-piece structure (parts). In addition, the structure is telescopic, which makes it easy to maintain the connecting unit when there is no need for a small access window or any tool .

Obviously, various changes and modifications can be made to the housing design without going beyond the essence and scope of the invention as defined by the following claims.

Claims (2)

1. A housing for holding lubricant in a pump assembly comprising a drive with a piston rod and a chemical pump with a rod, said rods being connected by means of a removable connecting element, characterized in that the housing contains first and second essentially cylindrical parts, the geometrical dimensions of which allow the first part casings to move telescopically inside the second part and to be in a threaded connection with it, while these parts engage with each other with the possibility of separation, ensuring the possibility of selective engagement to bring in the first and second positions, while in the first position, the first part of the housing is slid into the second part, and in the second position, the first and second parts of the housing are hermetically connected to the drive and pump. 2. The housing according to claim 1, in which these parts of the housing contain external surfaces containing corrugation to perform manual manipulations to change the relative position of these parts between the specified first and second positions.

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