Mechanical seal pressing device

Abstract

The utility model discloses a mechanical seal pressing device which comprises a pressing cylinder and a fixing assembly, the pressing cylinder is provided with a pressing cavity, and an inflation hole is formed in the pressing cavity; the fixing assembly is used for fixing the mechanical seal, and the mechanical seal is detachably connected with the connecting part of the pressing cylinder. The mechanical seal pressing device is simple in structure, the mechanical seal is fixed through the fixing assembly, then the mechanical seal is connected with the connecting part of the pressing cylinder, the mechanical seal is arranged in the pressing cavity, pressing can be conducted through a pressing instrument, operation is convenient, pressing can be conducted on site, and compared with the prior art, the mechanical seal pressing device has the advantages of being simple in structure and convenient to use. The pressurizing efficiency of the mechanical seal can be improved, the labor intensity of workers is reduced, time is saved, and the overhauling process is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical seal technical field more particularly, relate to a mechanical seal press device. BACKGROUND

[0002] Mechanical seal is one of common sealing forms of water pump, and main role is preventing fluid medium from leaking out of pump through pump shaft, and whether mechanical seal is qualified is very important for normal operation of water pump. Mechanical seal overall spare pressurization of nuclear power plant conventional island cooling water pump set has been the work with relatively high operation risk on site, and the existing pressurization mode needs to take mechanical seal to laboratory, installs on test water pump, adopts pressurization equipment and pressurizes, and needs to disassemble mechanical seal again after pressurization is completed and returns to cooling water pump, and pressurization efficiency is low, and the labor intensity of staff is big.

[0003] Therefore, how to improve the pressurization efficiency of mechanical seal and optimize the maintenance process become technical problems to be solved by the technical personnel in the field. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a mechanical seal press device to improve the pressurization efficiency of mechanical seal and optimize the maintenance process.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A mechanical seal press device, comprising:

[0007] A press cylinder, the press cylinder has a press chamber, and the press chamber is provided with an inflation hole;

[0008] A fixing assembly is used for fixing the mechanical seal, and the connecting part of the mechanical seal and the press cylinder is detachably connected.

[0009] Optionally, in the above-mentioned mechanical seal press device, the fixing assembly comprises:

[0010] A fixing seat;

[0011] A screw rod, the fixing seat is connected with the screw rod;

[0012] A movable part, the movable part is connected with the screw rod and can move along the axial direction of the screw rod, and the mechanical seal is arranged between the fixing seat and the movable part.

[0013] Optionally, in the above-mentioned mechanical seal press device, the fixing seat and the screw rod are threadedly connected or weldedly connected.

[0014] Optionally, in the above-mentioned mechanical seal press device, the screw rod is provided with a nut, the movable part is provided with a through hole, and the end of the screw rod away from the fixing seat passes through the through hole and is threadedly matched with the nut.

[0015] Optionally, in the mechanical seal pressing device, a boss matched with the mechanical seal is arranged on the fixed seat.

[0016] Optionally, in the mechanical seal pressing device, a sealing gasket is arranged on the fixed seat.

[0017] Optionally, in the mechanical seal pressing device, the connecting part is a flange, and the mechanical seal is connected with the connecting part through bolts.

[0018] Optionally, in the mechanical seal pressing device, the cross section of the fixed seat is circular, rectangular or elliptical.

[0019] Optionally, in the mechanical seal pressing device, the cross section of the movable part is rectangular, circular or elliptical.

[0020] Optionally, in the mechanical seal pressing device, the inflation hole is provided with an internal thread.

[0021] From the above scheme, it can be seen that the mechanical seal pressing device disclosed by the utility model has the advantages of simple structure, convenient operation, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0023] Figure 1 The structure diagram of the mechanical seal pressing device disclosed by the utility model embodiment Figure 1 ;

[0024] Figure 2 The structure diagram of the mechanical seal pressing device disclosed by the utility model embodiment Figure 2 .

[0025] Among them, 10 is the pressing cylinder, 11 is the pressing chamber, 12 is the inflation hole, 13 is the connecting part;

[0026] 20 is the fixed assembly, 21 is the fixed seat, 211 is the boss, 22 is the screw rod, 23 is the movable part, and 24 is the nut. DETAILED DESCRIPTION

[0027] The core of the utility model lies in disclose a kind of mechanical seal pressurizing device, to improve the pressurizing efficiency of mechanical seal, optimization maintenance process.

[0028] The technical solutions in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0029] As shown in Figure 1 And Figure 2 The utility model embodiment discloses a kind of mechanical seal pressurizing device, including pressurizing cylinder 10 and fixed assembly 20.

[0030] Wherein, pressurizing cylinder 10 has pressurizing chamber 11, pressurizing chamber 11 is provided with inflation hole 12, fixed assembly 20 is used to fix mechanical seal, and the connecting portion 13 of mechanical seal and pressurizing cylinder 10 is detachably connected.

[0031] When mechanical seal needs to be pressed, mechanical seal is fixed using fixed assembly 20, then the connecting portion 13 of mechanical seal and pressurizing cylinder 10 is connected, so that mechanical seal is packed into pressurizing chamber 11, pressurizing instrument is connected inflation hole 12, and pressurizing chamber 11 is inflated, and the leakage and pressure drop of mechanical seal are observed after rising to preset pressure, if there is no leakage and pressure drop in preset time, then mechanical seal pressurizing is qualified.

[0032] The mechanical seal pressurizing device disclosed in the utility model embodiment is simple in structure, mechanical seal is fixed using fixed assembly 20, then the connecting portion 13 of mechanical seal and pressurizing cylinder 10 is connected, so that mechanical seal is placed in pressurizing chamber 11, and pressurizing instrument is used to press, so that it is convenient to operate, and pressurizing can be carried out on site, compared with prior art, the pressurizing efficiency of mechanical seal can be improved, the labor intensity of worker is reduced, time is saved, maintenance process is optimized, and the quality of mechanical seal of cooling water pump group can be improved.

[0033] Further, as shown in Figure 1As shown, the fixing assembly 20 comprises a fixing base 21, a screw rod 22 and a movable piece 23, the fixing base 21 and the movable piece 23 are connected with the screw rod 22 respectively, the movable piece 23 can move along the axial direction of the screw rod 22, and the mechanical seal is arranged between the fixing base 21 and the movable piece 23. In use, the movable piece 23 is removed, the screw rod 22 passes through the mounting hole of the mechanical seal, and then the movable piece 23 is mounted on the screw rod 22, so that the two ends of the mechanical seal abut against the fixing base 21 and the movable piece 23 respectively, and the fixing of the mechanical seal is realized. The setting of the movable piece 23 can adapt to the pressing requirements of mechanical seals of various sizes.

[0034] Further, the fixing base 21 and the screw rod 22 are connected in a threaded or welded manner, preferably in a threaded manner, and the fixing base 21 is arranged at one end of the screw rod 22.

[0035] Further, the screw rod 22 is provided with a nut 24, the movable piece 23 is provided with a through hole, and the end of the screw rod 22 away from the fixing base 21 passes through the through hole of the movable piece 23 and is screwed with the nut 24. The screw rod 22 is preferably a double-headed screw rod, one end of which is screwed with the fixing base 21, and the other end passes through the through hole of the movable piece 23 and is screwed with the nut 24.

[0036] In other embodiments, the movable piece 23 can be screwed with the screw rod 22.

[0037] Further, as shown, Figure 1 The fixing base 21 is provided with a boss 211 matched with the mechanical seal, and the mechanical seal is inserted into the boss 211. Preferably, the size and shape of the boss 211 match the size and shape of the mounting hole of the end of the mechanical seal, and the size of the bottom plate of the fixing base 21 is larger than that of the boss 211, so that the mechanical seal is sleeved on the boss 211 and abuts against the bottom plate.

[0038] Further, in order to improve the sealing performance, the fixing base 21 is provided with a sealing gasket.

[0039] Further, the connecting part 13 of the pressing cylinder 10 is a flange, and the mechanical seal is connected with the connecting part 13 through bolts. The connecting part 13 is integrally formed with the pressing cylinder 10 or is connected through welding.

[0040] Further, the cross section of the fixing base 21 is circular, rectangular or elliptical, or other shapes, which can be adjusted according to actual conditions. Figure 1 As shown in the middle, the cross section of the fixing base 21 is circular, and the size of the bottom plate of the fixing base 21 is larger than that of the end face of the mechanical seal.

[0041] Further, the cross section of the movable piece 23 is rectangular, circular or elliptical, or other shapes, and the specific shape can be determined according to actual conditions.Figure 2 and Figure 2 The shape of the cross section of the movable part 23 shown in FIG. 6 is rectangular, and when the mechanical seal is installed in place, the two ends of the mechanical seal are in abutment with the end faces of the fixed seat 21 and the movable part 23, respectively.

[0042] Further, in some specific embodiments, the inflation hole 12 is provided with an internal thread, and the air pipe of the pressurizing instrument is a threaded air pipe, which is screwed with the inflation hole 12.

[0043] It should be noted that each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other.

[0044] Hereinafter, the terms "first" and "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features.

[0045] It should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0046] The principles and implementation modes of the present application are described by applying specific examples in this paper, and the above description of the embodiments is only used to help understand the core idea of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A mechanical seal press device characterized by, The utility model relates to a pressurizing cylinder (10) with a pressurizing chamber (11) provided with an inflation hole (12), a fixing assembly (20) for fixing a mechanical seal detachably connected with a connecting part (13) of the pressurizing cylinder (10). The fixing assembly (20) comprises: a fixing seat (21); 2. The mechanical seal press device of claim 1, wherein a screw rod (22) connected with the fixing seat (21); a movable element (23) connected with the screw rod (22) and movable along the axial direction of the screw rod (22), and the mechanical seal is arranged between the fixing seat (21) and the movable element (23). The fixing seat (21) is threadedly connected or weldedly connected with the screw rod (22). A nut (24) is arranged on the screw rod (22), a through hole is arranged on the movable element (23), and the end of the screw rod (22) away from the fixing seat (21) penetrates through the through hole and threadedly cooperates with the nut (24).

3. The mechanical seal press device of claim 2, wherein, A boss (211) matched with the mechanical seal is arranged on the fixing seat (21).

4. The mechanical seal press device of claim 3, wherein A sealing gasket is arranged on the fixing seat (21).

5. The mechanical seal press device of claim 2, wherein The connecting part (13) is a flange, and the mechanical seal is connected with the connecting part (13) through bolts.

6. The mechanical seal press device of claim 5, wherein, The shape of the cross section of the fixing seat (21) is circular, rectangular or elliptical.

7. The mechanical seal press device of claim 1, wherein The shape of the cross section of the movable element (23) is rectangular, circular or elliptical.

8. The mechanical seal press device of claim 2, wherein, The inflation hole (12) is provided with an internal thread.

9. The mechanical seal press device of claim 2, wherein, ​ 10. The mechanical seal press device of any one of claims 1-9, wherein, ​

Images