Pump body sealing performance detection tool clamp

Abstract

The pump body is provided with a shell and a plunger, the pump body comprises a bottom plate and a top plate which are arranged in parallel up and down, and the upper end of a positioning column is provided with a first sealing plug; a first cylinder assembly is installed on the top plate, a rubber pad is installed at the output end of the first cylinder assembly and used for abutting against the upper end of the plunger, and a second cylinder assembly is installed on the side, corresponding to the positioning column, of the bottom plate and used for making contact with the second connector to complete sealing. The side wall of the positioning column is provided with an air hole used for connecting an air tightness detection device. After the air cylinder assembly is started, the rubber mat moves downwards and abuts against the upper end of the plunger, the first sealing plug and the rubber mat are both made of soft rubber materials and deform after being pressed, the sealing performance of the connector is improved, and under the condition that the two ends are stressed at the same time, the stability of the pump body is kept in the vertical direction. And then the second air cylinder assembly is started to enable the first sealing plug to move upwards to make contact with and seal the second connector. The whole pump body is fixedly clamped, and meanwhile it is guaranteed that the sealing performance of the connector is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of air tightness detection tool fixture, especially relates to pump body leakproofness detection tool fixture. BACKGROUND

[0002] The water pump is composed of multiple components, first of all, the pump body, which is the main housing of the pump, is usually made of cast iron steel plate or steel casting, used to accommodate and support other components, and usually has an inlet and an outlet on the pump body for water inflow and outflow. The impeller is the core component of the pump, used to convert the mechanical energy of the pump into fluid energy. The sealing device is used to prevent the working medium of the pump from leaking or external air from entering. The shaft is a transmission device connecting the driving device and the impeller, usually made of alloy steel, and needs to have sufficient strength and rigidity.

[0003] The pump body is a shell structure, the inner cavity has multiple interface structures, and guide columns are fixed on the side of the shell. The pump body is mainly prepared by pouring, and needs to be detected for air tightness before being put into use to ensure that the pump body structure is complete, without cracks and air holes. The air tightness detection needs to fix the pump body while ensuring that the corresponding interfaces of the pump body are well sealed. The utility model is mainly a tool fixture for preparing the pump body for air tightness detection, used to fix the pump body while keeping the interface side of the pump body well sealed. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing pump body leakproofness detection tool fixture, mainly is the tool fixture for preparing the pump body for air tightness detection, is used to fix the pump body, and keeps the interface side of the pump body well sealed.

[0005] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0006] The pump body leakproofness detection tool fixture has a shell and a plunger, the shell has a first interface and a second interface communicating with the inner cavity of the shell, and comprises a bottom plate and a top plate arranged in parallel, the bottom plate is provided with a positioning column on the upper side for positioning the first interface, and the positioning column is provided with a first sealing plug on the upper end, the top plate is provided with a first cylinder assembly, the first cylinder assembly is located directly above the positioning column and coaxially arranged with the positioning column, and the output end of the first cylinder assembly is provided with a rubber pad for abutting against the upper end of the plunger to make the first sealing plug contact with the first interface to complete the sealing.

[0007] The bottom plate is provided with a second cylinder assembly on the side corresponding to the positioning column, the output end of the second cylinder assembly is provided with a second sealing plug for contacting with the second interface to complete the sealing.

[0008] The side wall of the positioning column is provided with a gas hole for connecting the air tightness detection device.

[0009] Further, the output end of the first cylinder assembly has a positioning plate, the rubber pad is installed on the lower side of the positioning plate, the positioning plate is parallel to the top plate, and a guide column is installed between the positioning plate and the top plate, the top plate is provided with a guide sleeve for the guide column to pass through and telescopic cooperation.

[0010] Further, a supporting rod is arranged between the top plate and the bottom plate, and a first limiting block for limiting the plunger is arranged, the first limiting block is installed on the supporting rod through a mounting block, the mounting block is provided with a mounting hole for sleeing the supporting rod on both sides, and the mounting block is adjustable in up-down position.

[0011] The first limiting block is provided with a groove for accommodating the plunger, and the upper side of the groove is projected as a V-shaped structure for abutting against the side wall of the limiting plunger.

[0012] Further, a second limiting block for limiting the side wall of the shell is arranged, and the second limiting block is supported on the bottom plate through a supporting block.

[0013] The utility model has the following beneficial effects: the first interface corresponding to the pump body is aligned with the first sealing plug, the plunger is a vertical structure, the upper end corresponds to the output end of the first cylinder assembly, after the cylinder assembly is started, the rubber pad moves downward and abuts against the upper end of the plunger, the first sealing plug and the rubber pad are both soft rubber materials, and are deformed after being pressed, the sealing property of the interface is improved, and the stability of the pump body is maintained in the vertical direction under the condition that both ends are stressed simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used for the embodiment description.

[0015] Figure 1 : the structure schematic diagram under the pump body installation state of the utility model.

[0016] Figure 2 : the structure schematic diagram under the pump body dismounting state of the utility model.

[0017] Figure 3 : the structure schematic diagram of the body and the bottom of the positioning plate of the utility model.

[0018] Figure 4 : the structure schematic diagram of the rear side of the clamp of the utility model.

[0019] In the drawings, the component list represented by each reference numeral is as follows: housing 3, plunger 33, first interface 31, second interface 32, bottom plate 1, top plate 2, positioning column 11, first sealing plug 12, first cylinder assembly 21, rubber pad 22, second cylinder assembly 5, second sealing plug 51, air hole 14, positioning plate 4, guide column 41, guide sleeve 23, support rod 13, first limiting block 61, mounting block 6, second limiting block 7, magnetic attraction block 8. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0021] As shown in the drawings, the pump body sealing detection tool fixture is provided with a housing 3 and a plunger 33, the housing 3 is provided with a first interface 31 and a second interface 32 communicating with the inner cavity of the housing, the first interface and the second interface are both circular openings, the center of the first interface corresponds to the axis of the plunger, the plunger is integrally formed by cylindrical bodies with different diameters, is used for inserting sealing sleeves with different diameters, and the cylindrical bodies are provided with obvious stepped grooves. Figures 1-3 The bottom plate 1 and the top plate 2 are arranged in parallel, the top plate and the bottom plate are projected and overlapped, and are both rectangular plate structures, the bottom plate 1 is provided with a positioning column 11 for positioning the first interface 31, and the positioning column 11 is provided with a first sealing plug 12 at the upper end; the positioning column is coaxially arranged with the plunger.

[0022] The top plate 2 is provided with a first cylinder assembly 21, the first cylinder assembly 21 is located directly above the positioning column 11 and is coaxially arranged with the positioning column 11, the first cylinder assembly 21 is provided with a rubber pad 22 at the output end, is used for abutting against the upper end of the plunger 33, and makes the first sealing plug 12 contact the first interface 31 to complete sealing;

[0023] The bottom plate 1 is provided with a second cylinder assembly 5 corresponding to the side of the positioning column 11, the second cylinder assembly 5 is provided with a second sealing plug 51 at the output end, and is used for contacting the second interface 32 to complete sealing;

[0024] The side wall of the positioning column 11 is provided with an air hole 14 for connecting an air tightness detection device. The first sealing plug is internally provided with a gas passage for communicating with the air hole, and after the gas is injected, the gas can be introduced into the housing.

[0025]

[0026] ​The first interface corresponding to the pump body is aligned with the first sealing plug, the plunger is in a vertical structure, the upper end corresponds to the output end of the first cylinder assembly, after the cylinder assembly is started, the rubber pad moves downward and abuts against the upper end of the plunger, the first sealing plug and the rubber pad are both made of soft rubber material and are deformed after being pressed, the sealing performance of the interface is improved, and the stability of the pump body in the vertical direction is maintained under the condition that both ends are simultaneously stressed. Then the second cylinder assembly is started to move the first sealing plug upward to contact and seal the second interface. The overall fixing and clamping of the pump body are completed, and the sealing performance of the interface is ensured to be good.

[0027] The air tightness detection device comprises a gas guide pipe, a gas pump and a gas pressure gauge. The gas guide pipe is connected to the air hole to fill the cavity in the shell with air. After the air is filled to a specified air pressure, the air injection is stopped. The air pressure gauge value is observed. If the value remains constant for a period of time, it indicates that the shell has good air tightness and no cracks or air holes.

[0028] As shown in Figure 2 : the output end of the first cylinder assembly 21 has a positioning plate 4, the rubber pad 22 is installed on the lower side of the positioning plate 4, the positioning plate 4 is parallel to the top plate 2, and a guide column 41 is installed between the positioning plate 4 and the top plate 2. The top plate 2 is provided with a guide sleeve 23 for the guide column 41 to pass through and telescopic cooperation. The positioning plate is in a rectangular structure, the guide column is four, and is uniformly distributed at the four corner positions of the positioning column. The lower end of the guide column is vertically fixed to the positioning plate for stable movement of the output shaft of the first cylinder assembly in the vertical direction.

[0029] It comprises a support rod 13 located between the top plate 2 and the bottom plate 1, and a first limiting block 61 for limiting the plunger 33. The first limiting block 61 is installed on the support rod 13 through an installation block 6. The installation block 6 is provided with an installation hole for sleeving the two sides of the support rod 13, so as to adjust the position of the installation block 6 up and down. The support rod is a circular rod body located between the corners of the top plate and the bottom plate. The installation block is provided with a notch at the edge of the installation hole. The installation block is provided with a fastening screw at the notch. The notch is reduced by rotating the screw, so as to finely adjust the caliber of the installation hole, so as to cooperate with the clamping of the support rod. After adjusting the position of the installation block, the installation block can be positioned by the screw, so that the first limiting block accurately corresponds to the side wall of the plunger. According to the caliber change of the plunger, the position of the first limiting block is adjusted.

[0030] As shown in Figure 4 : the first limiting block 61 is provided with a groove for accommodating the plunger 33. The upper side of the groove is projected as a V-shaped structure, which is used to abut against the side wall of the limiting plunger 33. It comprises a second limiting block 7 for limiting the side wall of the shell 3, which is supported on the bottom plate 1 through a support block. The contact surface between the second limiting block and the shell is a plane, which is used to abut against the side wall of the shell and limit the position during installation.

[0031] The inner side wall of the groove body and the corresponding contact surface of the second limiting block 7 are both provided with magnetic attraction blocks 8.

[0032] The embodiments are selected and specifically described in the specification in order to better explain the principles and practical applications of the utility model, so that the skilled in the art can well understand and utilize the utility model.

Claims

1. A pump body sealing detection tool clamp, the pump body having a housing (3) and a plunger (33), the housing (3) having a first interface (31) and a second interface (32) communicating with the housing cavity; characterized in that: it comprises a bottom plate (1) and a top plate (2) arranged in parallel, the bottom plate (1) having a positioning column (11) installed on the upper side for positioning the first interface (31), the positioning column (11) having a first sealing plug (12) installed on the upper end; the top plate (2) is installed with a first cylinder assembly (21), the first cylinder assembly (21) being located directly above the positioning column (11) and being coaxially arranged with the positioning column (11), the first cylinder assembly (21) having a rubber pad (22) installed on the output end for abutting against the upper end of the plunger (33), so that the first sealing plug (12) contacts the first interface (31) to complete the sealing; the bottom plate (1) is installed with a second cylinder assembly (5) corresponding to the side of the positioning column (11), the second cylinder assembly (5) having a second sealing plug (51) on the output end for contacting the second interface (32) to complete the sealing; the side wall of the positioning column (11) is provided with an air hole (14) for connecting an air tightness detection device.

2. The pump body leak detection fixture of claim 1, wherein: the output end of the first cylinder assembly (21) has a positioning plate (4), the rubber pad (22) is installed on the lower side of the positioning plate (4), the positioning plate (4) is parallel to the top plate (2), and a guide column (41) is installed between the positioning plate (4) and the top plate (2), the top plate (2) is installed with a guide sleeve (23) corresponding to the position of the guide column (41) for the guide column (41) to pass through and cooperate with the guide sleeve (23) in extension and retraction.

3. The pump body leak detection fixture of claim 1, wherein: it comprises a support rod (13) located between the top plate (2) and the bottom plate (1), and a first limiting block (61) for limiting the plunger (33), the first limiting block (61) being installed on the support rod (13) through a mounting block (6), the mounting block (6) being provided with a mounting hole sleeving the support rods (13) on both sides for adjusting the up-down position of the mounting block (6).

4. The pump body leak detection fixture of claim 3, wherein: the first limiting block (61) is provided with a groove accommodating the plunger (33), the upper side of the groove is projected as a V shape for abutting against the side wall of the plunger (33).

5. The pump body leak detection fixture of claim 4, wherein: it comprises a second limiting block (7) for limiting the side wall of the housing (3), the second limiting block (7) being supported on the bottom plate (1) through a support block.

6. The pump body leak detection fixture of claim 5, wherein: the inner side wall of the groove and the corresponding contact surface of the second limiting block (7) are both installed with a magnetic block (8).

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