Pump body airtightness testing device and airtightness detection equipment

Abstract

The utility model discloses a pump body air tightness testing device and air tightness detection equipment, the pump body air tightness testing device comprises a sealing mechanism and an air pressure detection mechanism, the sealing mechanism comprises at least one plugging module, each plugging module comprises at least one plugging device, each plugging device comprises a driving assembly and a sealing assembly, a driving end of the driving assembly is connected with the sealing assembly, and a driving end of the sealing assembly is connected with the sealing assembly. The driving assembly is configured to drive the sealing assembly to be close to and block a hole site in the pump body; the air pressure detection mechanism comprises an inflation assembly and a detection assembly; the inflation assembly is configured to inflate the closed pump body after the pump body is sealed by the sealing mechanism; the detection assembly is configured to monitor the air pressure value in the inflated pump body. The automatic pump body air tightness testing device can reduce errors caused by manual operation and improve the efficiency and accuracy of pump body air tightness detection; the air tightness testing device for the pump body can judge whether the air tightness of the pump body is qualified or unqualified according to a value measured by a sensor in the air pressure detection mechanism, and meanwhile, waste water can be prevented from being generated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pump body airtightness test, more particularly to a pump body airtightness test device and airtightness detection equipment. BACKGROUND

[0002] In the prior art, the pump body as a key component, its airtightness is directly related to the overall performance, therefore in the manufacturing and maintenance process, the detection of the airtightness of pump body is particularly important. The traditional airtightness detection method usually relies on manual operation, and the detection process needs to manually install the plug to close the interfaces of the pump body. This way not only is cumbersome to operate, but also requires high skills of the operator, and the detection result is inaccurate due to human factors. In addition, due to the difficulty in completely ensuring the sealing between the plug and the interface, a small amount of leakage often occurs during the detection process, further reducing the reliability of the detection.

[0003] Taking a high-pressure common rail oil pump as an example, as a core component of the modern diesel engine fuel injection system, the requirement for airtightness is more stringent. The high-pressure common rail system significantly improves the combustion efficiency and emission performance of the engine by precisely controlling the fuel injection pressure and timing. However, the pump body of the high-pressure common rail oil pump is subjected to extremely high pressure during operation, and any small leakage can cause inaccurate fuel injection, thereby affecting the performance and emissions of the engine. The existing airtightness detection device has low automation, and the detection process requires manual installation of the plug to close the interfaces of the pump body, and then uses water to detect the airtightness of the pump body. The worker needs to observe the generation of bubbles in real time to determine whether there is leakage. This method not only is inefficient, but also requires high concentration of the operator, and long-time observation can easily lead to fatigue, thereby affecting the accuracy of the detection; and a small amount of wastewater is also generated. SUMMARY

[0004] The utility model discloses a pump body airtightness test device and airtightness detection equipment to overcome at least one technical problem in the prior art.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0006] A pump body airtightness test device includes a sealing mechanism and a gas pressure detection mechanism, wherein:

[0007] The sealing mechanism includes at least one plugging module, each plugging module includes at least one plugging device, the plugging device includes a driving assembly and a sealing assembly, the driving end of the driving assembly is connected with the sealing assembly, and the driving assembly is configured to drive the sealing assembly to approach and plug the hole position on the pump body;

[0008] The air pressure detection mechanism comprises an inflation assembly and a detection assembly; the inflation assembly is in communication with the pump body and is configured to inflate the enclosed pump body after the pump body is sealed by the sealing mechanism; the detection assembly is configured to monitor the air pressure value in the pump body inflated by the inflation assembly.

[0009] Further, the sealing mechanism comprises three sealing modules, which are a first sealing module, a second sealing module and a third sealing module respectively.

[0010] The first sealing module, the second sealing module and the third sealing module are configured to cooperate to seal various hole positions on the pump body, so that the pump body is in a closed state.

[0011] Further, the third sealing module comprises a carrier, a first sealing device and a second sealing device, wherein:

[0012] The carrier comprises a bottom plate, a sliding plate, a sixth driving member and at least one sixth sealing head; the sliding plate is slidingly installed on the bottom plate; each sixth sealing head is fixedly installed on the upper end of the sliding plate, and is used to seal the bottom side hole position of the pump body placed on the sliding plate; the driving end of the sixth driving member is connected with the sliding plate, and the sixth driving member is configured to drive the sliding plate to slide in a first horizontal direction;

[0013] The first sealing device comprises a first support plate, a first driving assembly and a first sealing assembly; the fixed end of the first driving assembly is installed on the first support plate, the driving end of the first driving assembly is connected with the first sealing assembly, and the first driving assembly is configured to drive the first sealing assembly to move in a second horizontal direction perpendicular to the first horizontal direction;

[0014] The second sealing device comprises a second support plate, a second driving assembly and a second sealing assembly; the fixed end of the second driving assembly is installed on the second support plate, the driving end of the second driving assembly is connected with the second sealing assembly, and the second driving assembly is configured to drive the second sealing assembly to move in the second horizontal direction;

[0015] The first support plate and the second support plate are oppositely arranged on both sides of the first end of the bottom plate, and an open accommodation space is enclosed between the first end of the bottom plate and the first support plate and the second support plate;

[0016] The sixth driving member is configured to drive the sliding plate to slide in the first horizontal direction to the second end of the bottom plate to receive the pump body; the sixth driving member is further configured to drive the sliding plate receiving the pump body to slide in the first horizontal direction to the first end of the bottom plate, so that the pump body on the sliding plate enters the accommodation space;

[0017] The first sealing assembly and the second sealing assembly are both towards the accommodation space, and the first sealing assembly and the second sealing assembly are used for respectively sealing left side hole positions and right side hole positions of a pump body located in the accommodation space.

[0018] Further, the carrier further comprises two parallel and spaced guide rails installed on the bottom plate, and the two guide rails both extend along the first horizontal direction, and the sliding plate is slidably installed on the bottom plate through the two guide rails.

[0019] Further, the first driving assembly comprises a third driving member and a fourth driving member, and the first sealing assembly comprises a first sealing part and a second sealing part.

[0020] The first sealing part comprises a seventh sealing head, the driving end of the third driving member is connected with the seventh sealing head, and the third driving member is configured to drive the seventh sealing head to move along the second horizontal direction.

[0021] The second sealing part comprises a third pressing plate and at least one fifth sealing head installed on the third pressing plate, the driving end of the fourth driving member is connected with the third pressing plate, and the fourth driving member is configured to drive the third pressing plate to move along the second horizontal direction.

[0022] Further, a fifth driving member is installed on the first side of the first support plate, and the driving end of the fifth driving member is connected with one end of a top rod.

[0023] The other end of the top rod passes through the first support plate, and the fifth driving member is configured to drive the top rod to move along the second horizontal direction.

[0024] Further, the second sealing module comprises a third sealing part, a third driving assembly and a third sealing assembly.

[0025] The fixed end of the third driving assembly is installed on the third support plate, the driving end of the third driving assembly is connected with the third sealing assembly, the third sealing assembly is towards the accommodation space, the third driving assembly is configured to drive the third sealing assembly to move along the first horizontal direction, and the third sealing assembly is used for sealing a rear side hole position of a pump body located in the accommodation space.

[0026] Further, the third driving assembly comprises a second driving member, and the third sealing assembly comprises a third sealing part and a fourth sealing part.

[0027] The third sealing part and the fourth sealing part are installed on the second pressing plate, the third sealing part comprises at least one third sealing head, and the fourth sealing part comprises a sealing plate and at least one fourth sealing head installed on the sealing plate;

[0028] The two side edges of the third support plate are connected with the rear side edges of the first support plate and the second support plate respectively;

[0029] The third support plate is provided with a plurality of third linear bearings, and one side of the second pressing plate is provided with a plurality of second pipes corresponding to the third linear bearings respectively; each second pipe is connected with a second linkage plate by penetrating through the corresponding third linear bearing and sliding in the corresponding third linear bearing;

[0030] The fixed end of the second driving member is installed on the third support plate, the driving end of the second driving member is connected with the second pressing plate, the second driving member is configured to drive the second pressing plate to move in the first horizontal direction, so as to make the third sealing part and the fourth sealing part installed on the second pressing plate close to or away from the rear side hole position of the pump body in the accommodation space.

[0031] Further, each second pipe is provided with a shock-absorbing pad on the part of the pipe body between the second pressing plate and the third support plate.

[0032] Further, the first plugging module comprises a fourth plugging device, and the fourth plugging device comprises a fourth support plate, a fourth driving assembly and a fourth sealing assembly;

[0033] The fixed end of the fourth driving assembly is installed on the fourth support plate, the driving end of the fourth driving assembly is connected with the fourth sealing assembly, the fourth sealing assembly faces the accommodation space, and the fourth driving assembly is configured to drive the fourth sealing assembly to move in the height direction, so that the fourth sealing assembly is used for plugging the top side hole position of the pump body in the accommodation space.

[0034] Further, the third sealing assembly comprises a fifth sealing part and a sixth sealing part;

[0035] The fifth sealing part and the sixth sealing part are installed on the first pressing plate, the fifth sealing part comprises at least one second sealing head, and the sixth sealing part comprises at least one first sealing head;

[0036] The two side edges of the fourth support plate are connected with the upper side edges of the first support plate and the second support plate respectively;

[0037] The fourth support plate is provided with a plurality of second linear bearings, and the first pressing plate is provided with a plurality of first pipes corresponding to the second linear bearings; the first pipes are connected with the first linkage plate through the corresponding second linear bearings and slide in the second linear bearings;

[0038] The first pressing plate is provided with a support frame away from the first sealing head, and the fourth support plate is provided with an opening for the support frame to pass through;

[0039] The fixed end of the first driving member is arranged on the support frame, and the driving end of the first driving member is connected with a sliding shaft through a connecting head; the sliding shaft is connected with the second sealing head through a first linear bearing arranged on the first pressing plate; the first driving member is configured to drive the second sealing head to move in the height direction, so that the second sealing head is close to or away from the top hole of the pump body in the accommodating space.

[0040] Further, the first pressing plate is further provided with a linear bearing pad block, and the fourth sealing device further comprises a detection assembly comprising at least one pressure sensor for detecting whether the pressure is too high.

[0041] A pump body air tightness detection device comprises a base and at least one pump body air tightness testing device as described above arranged on the base.

[0042] Further, the base is further provided with a viewing window, a three-color lamp, an operation box and an electrical box; the viewing window is made of transparent material, facilitating manual observation of the operation of the device; the three-color lamp is used to display the operation state of the device; the operation box is electrically connected with the pump body air tightness testing device and is used to control the operation of the pump body air tightness testing device; and the electrical box is used to provide power for the pump body air tightness testing device and the operation box.

[0043] Compared with the prior art, the beneficial effects of the technical scheme of the utility model are as follows:

[0044] The pump body air tightness testing device can reduce errors caused by manual operation and improve the efficiency and accuracy of pump body air tightness detection; the pump body air tightness testing device can determine whether the pump body air tightness is qualified or unqualified according to the sensor measurement value in the air pressure detection mechanism, and can also avoid waste water. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0046] Figure 1 Figure 1 is a structural schematic diagram of a pump body airtight testing device provided in an embodiment of the present application;

[0047] Figure 2 Figure 2 is a structural schematic diagram of a third plugging module in the pump body airtight testing device provided in an embodiment of the present application;

[0048] Figure 3 Figure 3 is a structural schematic diagram of a second plugging module in the pump body airtight testing device provided in an embodiment of the present application;

[0049] Figure 4 Figure 4 is a structural schematic diagram of a first plugging module in the pump body airtight testing device provided in an embodiment of the present application;

[0050] Figure 5 Figure 5 is a structural schematic diagram of a pump body airtight testing device provided in an embodiment of the present application;

[0051] Marking in the figure:

[0052] 1, base; 2, observation window; 3, three-color lamp; 4, operating box; 5, electrical box;

[0053] 6, first plugging module; 601, first sealing head; 602, second sealing head; 603, first pressing plate; 604, linear bearing pad; 605, first linear bearing; 606, sliding shaft; 607, connecting head; 608, first driving piece; 609, pressure sensor; 610, first linkage plate; 611, fourth support plate; 612, second linear bearing; 613, first guide pipe;

[0054] 7, second plugging module; 701, sealing plate; 702, second pressing plate; 703, third support plate; 704, second guide pipe; 705, second linkage plate; 706, second driving piece; 707, third linear bearing; 708, shock absorbing pad; 709, third sealing head; 710, fourth sealing head;

[0055] 8, third plugging module; 801, bottom plate; 802, guide rail; 803, first support plate; 804, top rod; 805, third pressing plate; 806, fifth sealing head; 807, sliding plate; 808, sixth sealing head; 809, third driving member; 810, fourth driving member; 811, fifth driving member; 812, sixth driving member; 813, seventh sealing head. DETAILED DESCRIPTION

[0056] In the following description, numerous specific details are set forth to provide a more thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without one or more of these details. In other instances, well-known features have not been described in order to avoid obscuring the present application. The features and advantages of the present application will become more apparent from the detailed description in conjunction with the accompanying drawings.

[0057] It should be understood that the present application can be carried out in various forms and should not be construed to be limited to the embodiments set forth herein. Rather, these embodiments have been provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. In the drawings, the size and relative sizes of layers and regions can be exaggerated for clarity. Like reference numerals designate like elements throughout.

[0058] In the description of the present application, it should be understood that the terms "left side", "right side", "upper portion", "lower portion" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. The specific dimensions used in the embodiments are only for the purpose of illustrating the technical solutions, and do not limit the protection scope of the present application. It is understandable that some well-known structures and their descriptions in the drawings can be omitted for those skilled in the art.

[0059] Unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connection", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or can be integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] In order to thoroughly understand the present application, detailed structures will be presented in the following description in order to illustrate the technical solutions proposed by the present application. In addition to these detailed descriptions, the present application can also have other implementation manners.

[0061] Embodiment 1:

[0062] As Figure 1 shown, the utility model provides a technical scheme:

[0063] A pump body airtightness testing device, it includes sealing mechanism and air pressure detection mechanism (not shown), wherein:

[0064] The sealing mechanism includes at least one plugging module ( Figure 1 As shown, the sealing mechanism includes three plugging modules, three plugging modules are first plugging module 6, second plugging module 7 and third plugging module 8 respectively, this case can be applicable to the sealing of high-pressure common rail pump), each plugging module includes at least one plugging device, the plugging device includes drive assembly and sealing assembly (can be simply understood as the sealing head of each pump body hole position in the drawing), the drive end of drive assembly is connected with sealing assembly, drive assembly is configured to drive sealing assembly to close and block the hole position on the pump body;

[0065] The air pressure detection mechanism includes inflation assembly and detection assembly;The inflation assembly is communicated with the pump body, and the inflation assembly is configured to inflate the closed pump body after the pump body is sealed by the sealing mechanism;The detection assembly is configured to monitor the air pressure value in the pump body after inflation by the inflation assembly;If the air pressure value is continuously smaller, it proves that the pump body is not airtight.

[0066] Wherein, the air pressure detection mechanism is prior art, and can be purchased in the market, which will not be repeated here.

[0067] Embodiment 2:

[0068] On the basis of embodiment 1, referring to Figure 1 , the sealing mechanism includes three plugging modules, three plugging modules are first plugging module 6, second plugging module 7 and third plugging module 8 respectively;

[0069] The first plugging module 6, the second plugging module 7 and the third plugging module 8 are configured to cooperate to block each hole position on the pump body, so that the pump body is in a closed state.

[0070] Further, referring to Figure 2 , the third plugging module 8 includes a carrier, a first plugging device and a second plugging device, wherein:

[0071] The carrier comprises a bottom plate 801, a sliding plate 807, a sixth driving member 812 (magnetic coupling type rodless cylinder) and at least one sixth sealing head 808; the sliding plate 807 is slidingly installed on the bottom plate 801; each sixth sealing head 808 is fixedly installed on the upper end of the sliding plate 807, and the sixth sealing head 808 is used for plugging the bottom side hole position of the pump body placed on the sliding plate 807; the driving end of the sixth driving member 812 is connected with the sliding plate 807, and the sixth driving member 812 is configured to drive the sliding plate 807 to slide along the first horizontal direction (front-rear direction).

[0072] The first plugging device comprises a first support plate 803, a first driving assembly and a first sealing assembly; the fixed end of the first driving assembly is installed on the first support plate 803, the driving end of the first driving assembly is connected with the first sealing assembly, and the first driving assembly is configured to drive the first sealing assembly to move along the second horizontal direction (left-right direction) which is perpendicular to the first horizontal direction.

[0073] The second plugging device comprises a second support plate, a second driving assembly and a second sealing assembly; the fixed end of the second driving assembly is installed on the second support plate, the driving end of the second driving assembly is connected with the second sealing assembly, and the second driving assembly is configured to drive the second sealing assembly to move along the second horizontal direction.

[0074] The first support plate 803 and the second support plate are oppositely arranged on the two sides of the first end of the bottom plate 801, and the first end of the bottom plate 801 is enclosed between the first support plate 803 and the second support plate to form an open accommodation space.

[0075] The sixth driving member 812 is configured to drive the sliding plate 807 to slide along the first horizontal direction to the second end of the bottom plate 801 to accommodate the pump body; the sixth driving member 812 is also configured to drive the sliding plate 807 with the pump body to slide along the first horizontal direction to the first end of the bottom plate 801, so that the pump body on the sliding plate 807 enters the accommodation space.

[0076] The first sealing assembly and the second sealing assembly are both directed to the accommodation space, and the first sealing assembly and the second sealing assembly are respectively used for plugging the left side hole position and the right side hole position of the pump body in the accommodation space.

[0077] Further, with reference to Figure 2 , the carrier further comprises two parallel and spaced guide rails 802 installed on the bottom plate 801, and the two guide rails 802 both extend along the first horizontal direction; the sliding plate 807 is slidingly installed on the bottom plate 801 through the two guide rails 802.

[0078] Further, referring to Figure 2 , the first driving assembly comprises a third driving member 809 (a thin cylinder) and a fourth driving member 810 (a thin cylinder), and the first sealing assembly comprises a first sealing part and a second sealing part;

[0079] The first sealing part comprises a seventh sealing head 813, and a driving end of the third driving member 809 is connected with the seventh sealing head 813, and the third driving member 809 is configured to drive the seventh sealing head 813 to move along the second horizontal direction;

[0080] The second sealing part comprises a third pressing plate 805 and at least one fifth sealing head 806 mounted on the third pressing plate 805, and a driving end of the fourth driving member 810 is connected with the third pressing plate 805, and the fourth driving member 810 is configured to drive the third pressing plate 805 to move along the second horizontal direction.

[0081] Further, referring to Figure 2 , a fifth driving member 811 (a thin cylinder) is mounted on a first side of the first support plate 803, and a driving end of the fifth driving member 811 is connected with one end of a top rod 804;

[0082] The other end of the top rod 804 penetrates through the first support plate 803, and the fifth driving member 811 is configured to drive the top rod 804 to move along the second horizontal direction.

[0083] Further, referring to Figure 3 , the second plugging module 7 comprises a third plugging device, and the third plugging device comprises a third support plate 703, a third driving assembly and a third sealing assembly;

[0084] A fixed end of the third driving assembly is mounted on the third support plate 703, a driving end of the third driving assembly is connected with the third sealing assembly, the third sealing assembly faces the accommodation space, the third driving assembly is configured to drive the third sealing assembly to move along the first horizontal direction, and the third sealing assembly is used for plugging a rear hole position of a pump body located in the accommodation space.

[0085] Further, referring to Figure 3 , the third driving assembly comprises a second driving member 706, and the third sealing assembly comprises a third sealing part and a fourth sealing part;

[0086] The third sealing part and the fourth sealing part are mounted on a second pressing plate 702, the third sealing part comprises at least one third sealing head 709, and the fourth sealing part comprises a sealing plate 701 and at least one fourth sealing head 710 mounted on the sealing plate 701;

[0087] Two side edges of the third support plate 703 are connected with a rear side edge of the first support plate 803 and a rear side edge of the second support plate respectively;

[0088] A plurality of third linear bearings 707 are mounted on the third support plate 703, and one side of the second pressing plate 702 is provided with a plurality of second conduits 704 corresponding to the third linear bearings 707 respectively; each second conduit 704 is connected with a second linkage plate 705 by penetrating through the corresponding third linear bearing 707, and slides in the corresponding third linear bearing 707;

[0089] A fixed end of the second driving member 706 is mounted on the third support plate 703, and a driving end of the second driving member 706 is connected with the second pressing plate 702; the second driving member 706 is configured to drive the second pressing plate 702 to move along the first horizontal direction, so as to make the third sealing part and the fourth sealing part mounted on the second pressing plate 702 close to or away from the rear hole position of the pump body in the accommodation space.

[0090] Further, referring to Figure 3 The second conduit 704 is provided with a shock-absorbing pad 708 on the part of the pipe body between the second pressing plate 702 and the third support plate 703.

[0091] Further, referring to Figure 4 The first plugging module 6 comprises a fourth plugging device, and the fourth plugging device comprises a fourth support plate 611, a fourth driving assembly and a fourth sealing assembly;

[0092] A fixed end of the fourth driving assembly is mounted on the fourth support plate 611, and a driving end of the fourth driving assembly is connected with the fourth sealing assembly; the fourth sealing assembly faces the accommodation space, and the fourth driving assembly is configured to drive the fourth sealing assembly to move along the height direction; the fourth sealing assembly is used for plugging the top hole position of the pump body in the accommodation space.

[0093] Further, referring to Figure 4 The third sealing assembly comprises a fifth sealing part and a sixth sealing part;

[0094] The fifth sealing part and the sixth sealing part are mounted on the first pressing plate 603; the fifth sealing part comprises at least one second sealing head 602, and the sixth sealing part comprises at least one first sealing head 601;

[0095] Two side edges of the fourth support plate 611 are connected with an upper side edge of the first support plate 803 and an upper side edge of the second support plate respectively;

[0096] The fourth support plate 611 is provided with a plurality of second linear bearings 612, and one side of the first pressing plate 603 is provided with a plurality of first guide pipes 613 corresponding to the second linear bearings 612 respectively; each first guide pipe 613 is connected with the first linkage plate 610 by penetrating through the corresponding second linear bearing 612, and each first guide pipe 613 slides in the corresponding second linear bearing 612;

[0097] The first pressing plate 603 is provided with a support frame on the side away from the first sealing head 601, and the fourth support plate 611 is provided with an opening for the support frame to pass through.

[0098] The fixed end of the first driving part 608 is installed on the support frame, the driving end of the first driving part 608 is connected with the sliding shaft 606 through the connecting head 607, the sliding shaft 606 is connected with the second sealing head 602 by penetrating through the first linear bearing 605 installed on the first pressing plate 603, and the first driving part 608 is configured to drive the second sealing head 602 to move in the height direction, so that the second sealing head 602 is close to or away from the top hole position of the pump body in the containing space.

[0099] Further, with reference to Figure 4 The first pressing plate 603 is further provided with a linear bearing pad 604, and the fourth plugging device further comprises a detection assembly, and the detection assembly comprises at least one pressure sensor for detecting whether the pressure is too high.

[0100] Working principle of the pump body air tightness testing device:

[0101] The pump body is installed on the sliding plate 807, the start button is clicked, the sliding plate 807 is driven into the working area by the sixth driving part 812, the left and right pressure module cylinders work to compress and seal the left and right hole positions of the pump body, the upper pressure module and the rear pressure module work to compress and seal the upper and rear hole positions of the pump body, the pump body is inflated to reach the specified pressure, the pressure change condition in the pump body is detected, and whether the pump body is air-tight is judged.

[0102] Embodiment 3:

[0103] As shown in Figure 5 The utility model provides a technical scheme:

[0104] A pump body air tightness detection equipment, the pump body air tightness detection equipment includes the base 1 and installs at least one preceding pump body air tightness testing device on the base 1.

[0105] Embodiment 4:

[0106] On the basis of embodiment 3, with reference to Figure 5The machine base 1 is further provided with a viewing window 2, a three-color lamp 3, an operating box 4, and an electrical box 5. The viewing window 2 is made of transparent material, facilitating manual observation of the equipment operation. The three-color lamp 3 is used to display the equipment operation state. The operating box 4 is electrically connected with the pump body airtightness testing device, and is used to control the operation of the pump body airtightness testing device. The electrical box 5 is used to provide power for the pump body airtightness testing device and the operating box 4.

[0107] Each device (parts without specific structure) selected in the present application is a general standard part or a part known to those skilled in the art, the structure and principle of which can be known by the skilled person through a technical manual or through a conventional experimental method. Moreover, the software programs involved in the present application are prior art, and the present application does not involve any improvement on the software programs.

[0108] Although example embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the above description is merely of exemplary embodiments and is not intended to limit the scope of the present application. Various changes and modifications can be made thereto by those skilled in the art without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as claimed in the appended claims.

[0109] Similarly, it is to be understood that, in order to simplify the present application and to help understand one or more of the various application aspects, in the description of the exemplary embodiments of the present application, various features of the present application are sometimes grouped together in a single embodiment, figure, or description thereof. However, this should not be interpreted to reflect an intention that the claimed application requires more features than those explicitly recited in each claim. Rather, as reflected by the corresponding claims, the application point is that the corresponding technical problem can be solved with fewer features than all the features of a certain disclosed single embodiment. Therefore, the claims following the specific embodiments are hereby expressly incorporated into the specific embodiments, wherein each claim itself is a separate embodiment of the present application.

[0110] In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means to be within the scope of the present application and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0111] It should be noted that the foregoing examples have been provided merely for the purpose of explanation and are in no way to be construed as limiting of the present application. While the application has been described with reference to preferred embodiments and illustrations, the person of ordinary skill in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The use of the words "first", "second", and "third", etc. does not imply any order. These words are to be interpreted as names.

Claims

1. A pump body air tightness testing apparatus, characterized by, The pump body airtightness testing device comprises a sealing mechanism and an air pressure detection mechanism, wherein: The sealing mechanism comprises at least one sealing module, each of the sealing modules comprises at least one sealing device, the sealing device comprises a driving assembly and a sealing assembly, the driving end of the driving assembly is connected with the sealing assembly, and the driving assembly is configured to drive the sealing assembly to approach and seal the hole position on the pump body; The air pressure detection mechanism comprises an inflation assembly and a detection assembly; the inflation assembly is in communication with the pump body, and the inflation assembly is configured to inflate the enclosed pump body after the pump body is sealed by the sealing mechanism; and the detection assembly is configured to monitor the air pressure value in the pump body inflated by the inflation assembly.

2. The pump body air tightness testing apparatus of claim 1, wherein, The sealing mechanism comprises three sealing modules, which are a first sealing module, a second sealing module and a third sealing module; The first sealing module, the second sealing module and the third sealing module are configured to cooperate to seal each hole position on the pump body, so that the pump body is in a closed state.

3. The pump body air tightness testing apparatus of claim 2, wherein, The third sealing module comprises a carrier, a first sealing device and a second sealing device, wherein: The carrier comprises a bottom plate, a sliding plate, a sixth driving member and at least one sixth sealing head; the sliding plate is slidingly installed on the bottom plate; each sixth sealing head is fixedly installed on the upper end of the sliding plate, and the sixth sealing head is used to seal the bottom side hole position of the pump body placed on the sliding plate; the driving end of the sixth driving member is connected with the sliding plate, and the sixth driving member is configured to drive the sliding plate to slide in a first horizontal direction; The first sealing device comprises a first support plate, a first driving assembly and a first sealing assembly, the fixed end of the first driving assembly is installed on the first support plate, the driving end of the first driving assembly is connected with the first sealing assembly, and the first driving assembly is configured to drive the first sealing assembly to move in a second horizontal direction perpendicular to the first horizontal direction; The second sealing device comprises a second support plate, a second driving assembly and a second sealing assembly, the fixed end of the second driving assembly is installed on the second support plate, the driving end of the second driving assembly is connected with the second sealing assembly, and the second driving assembly is configured to drive the second sealing assembly to move in the second horizontal direction; The first support plate and the second support plate are oppositely arranged on both sides of the first end of the bottom plate, and the first end of the bottom plate and the first support plate and the second support plate form an open accommodation space; The sixth driving member is configured to drive the sliding plate to slide in the first horizontal direction to the second end of the bottom plate to receive the pump body; the sixth driving member is also configured to drive the sliding plate receiving the pump body to slide in the first horizontal direction to the first end of the bottom plate, so that the pump body located on the sliding plate enters the accommodation space; The first sealing assembly and the second sealing assembly are both towards the accommodation space, and the first sealing assembly and the second sealing assembly are used to seal the left side hole position and the right side hole position of the pump body in the accommodation space, respectively.

4. The pump body air tightness testing apparatus of claim 3, wherein, The carrier further comprises two parallel and spaced guide rails installed on the bottom plate, both of which extend along the first horizontal direction, and the sliding plate is slidingly installed on the bottom plate through the two guide rails.

5. The pump body air tightness testing apparatus of claim 3, wherein, The first driving assembly comprises a third driving member and a fourth driving member, and the first sealing assembly comprises a first sealing part and a second sealing part; The first sealing part comprises a seventh sealing head, the driving end of the third driving member is connected with the seventh sealing head, and the third driving member is configured to drive the seventh sealing head to move along the second horizontal direction; The second sealing part comprises a third pressing plate and at least one fifth sealing head installed on the third pressing plate, the driving end of the fourth driving member is connected with the third pressing plate, and the fourth driving member is configured to drive the third pressing plate to move along the second horizontal direction.

6. The pump body air tightness testing apparatus of claim 3, wherein, The second sealing assembly comprises a third sealing part and a fourth sealing part; The third driving assembly comprises a second driving member, the third sealing assembly comprises a third sealing part and a fourth sealing part; 7. The pump body air tightness testing apparatus of claim 6, wherein, The third sealing part and the fourth sealing part are installed on a second pressing plate, the third sealing part comprises at least one third sealing head, and the fourth sealing part comprises a sealing plate and at least one fourth sealing head installed on the sealing plate; The two side edges of the third support plate are respectively connected with the rear side edge of the first support plate and the rear side edge of the second support plate; The third support plate is provided with a plurality of third linear bearings, and the second pressing plate is provided with a plurality of second pipes corresponding to the third linear bearings one by one; each second pipe is connected with a second linkage plate through the corresponding third linear bearing and slides in the corresponding third linear bearing; The fixed end of the second driving member is installed on the third support plate, the driving end of the second driving member is connected with the second pressing plate, and the second driving member is configured to drive the second pressing plate to move along the first horizontal direction, so as to make the third sealing part and the fourth sealing part installed on the second pressing plate close to or away from the rear side hole position of the pump body in the accommodation space. The second pipes are provided with shock-absorbing pads on the pipe bodies between the second pressing plate and the third support plate.

8. The pump body air tightness testing apparatus of claim 7, wherein, The first sealing assembly comprises a fourth sealing part and a fourth sealing assembly; 9. The pump body air tightness testing apparatus of claim 6, wherein, ​ The fixed end of the fourth driving assembly is mounted on the fourth supporting plate, and the driving end of the fourth driving assembly is connected with the fourth sealing assembly, which faces the accommodating space. The fourth driving assembly is configured to drive the fourth sealing assembly to move in the height direction, and the fourth sealing assembly is used to block the top side hole of the pump body in the accommodating space.

10. A pump body air tightness testing apparatus characterized by, The pump body air tightness detection equipment comprises a base and at least one pump body air tightness testing device as claimed in any one of claims 1-9 mounted on the base.

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