A dry pump testing device

Abstract

The present invention discloses a dry pump testing device, comprising: a base frame, a silo, a conveying structure and a transfer and storage structure; wherein, the silo is used for accommodating dust, the conveying structure is installed on the base frame, and the conveying structure is connected to the silo to convey dust; the transfer and storage structure includes a transfer and storage member, a first opening and closing member and a second opening and closing member; the first opening and closing member and the second opening and closing member are respectively installed on both sides of the transfer and storage member; the transfer and storage member further includes a transfer and storage cavity; the dry pump testing device has a powder conveying state and a testing state; in the powder conveying state, the first opening and closing member is opened, and the second opening and closing member is closed, and the conveying structure conveys dust into the transfer and storage cavity; in the testing state, the first opening and closing member is closed, and the second opening and closing member is opened, and the dry pump sucks the dust inside the transfer and storage cavity. This structure conveys powder quantitatively and regularly, simulates the environment when the dry pump is working normally, and makes the simulated working environment more stable, so that the test result of the dry pump's high-dust treatment ability is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum pump bodies, and particularly to a dry pump testing device. Background Art

[0002] Currently, major manufacturers in the vacuum industry have successively launched different models of vacuum pumps adapted to various processes. Before the products leave the factory, various performances and parameters of the products will be tested, and for new products, whole-machine type tests will also be carried out. Among them, the whole-machine dust type test mainly tests the processing ability of the dry pump for high-dust processes.

[0003] However, the existing dry pump testing requires manual operation, and the dry pump is directly connected to the powder bin; during the process of testing the powder feeding ability, quantitative and timed powder feeding cannot be accurately and effectively carried out, and the simulated working environment of the dry pump is unstable, which will lead to inaccurate test results of the dry pump's high-dust processing ability. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the existing dry pump testing requires manual operation, and the dry pump is directly connected to the powder bin; during the process of testing the powder feeding ability, quantitative and timed powder feeding cannot be accurately and effectively carried out, and the simulated working environment of the dry pump is unstable, which will lead to inaccurate test results of the dry pump's high-dust processing ability.

[0005] To this end, the present invention provides a dry pump testing device, including:

[0006] A base frame;

[0007] A material bin for accommodating dust;

[0008] A conveying structure installed on the base frame and connected to the material bin to convey dust;

[0009] A transfer structure including a transfer member, a first opening and closing member, and a second opening and closing member; the first opening and closing member and the second opening and closing member are respectively installed on both sides of the transfer member; the first opening and closing member is connected to the conveying structure; the second opening and closing member is adapted to be connected to a dry pump;

[0010] Wherein, the transfer member further includes a transfer cavity; the dry pump testing device has a powder conveying state and a testing state; in the powder conveying state, the first opening and closing member is opened, and the second opening and closing member is closed, and the conveying structure conveys dust into the transfer cavity; in the testing state, the first opening and closing member is closed, the second opening and closing member is opened, and the dry pump sucks the dust inside the transfer cavity.

[0011] Optionally, the above transfer structure further includes a third opening and closing member; the third opening and closing member is installed on the transfer member;

[0012] The dry pump testing device further has a flat pressure state. In the flat pressure state, the third opening and closing member is open, and the first opening and closing member and the second opening and closing member are closed; the third opening and closing member guides air to enter the inside of the transfer chamber.

[0013] Optionally, the above-mentioned transfer member is a three-way pipe, and the three-way pipe includes a first end, a second end, and a third end; the first end is connected to the first opening and closing member, the second end is connected to the second opening and closing member, and the third end is connected to the third opening and closing member.

[0014] Optionally, the above-mentioned conveying structure includes a conveying pipe, a power member, and a conveying member;

[0015] One end of the conveying pipe is connected to the first opening and closing member, the other end of the conveying pipe is communicated with the silo, the conveying member is connected to the power member, and the conveying member is arranged in the conveying pipe to transport the dust in the silo to the transfer structure.

[0016] Optionally, the above-mentioned first end and the second end are vertically arranged along the direction of gravity.

[0017] Optionally, the above-mentioned further includes a lifting structure, the lifting structure is installed on the base frame, and the lifting structure is used to drive the conveying structure to move in the direction of gravity or the opposite direction of gravity.

[0018] Optionally, the above-mentioned further includes a recovery structure; the recovery structure includes a box body and a box cover, and the box cover is detachably covered on the box body; one side of the box body is provided with a powder inlet, the other side of the box body is provided with an air outlet, and the powder inlet is connected to the dry pump.

[0019] Optionally, the above-mentioned recovery structure further includes a filter element, and the filter element is arranged between the box body and the box cover and is close to the air outlet.

[0020] Optionally, the above-mentioned recovery structure further includes a first blocking portion and a second blocking portion, the first blocking portion is arranged in the box body, the second blocking portion is arranged on the box cover, and the first blocking portion and the second blocking portion are alternately and spaced apart.

[0021] Optionally, the above-mentioned recovery structure further includes a recovery port, and the recovery port is arranged on the side of the box body away from the box cover, and the recovery port is used to recover the dust in the box body.

[0022] The technical solution provided by the present invention has the following advantages:

[0023] 1. This embodiment provides a dry pump testing device, including: a base frame, a silo, a conveying structure, and a transfer and storage structure; wherein, the silo is used to accommodate dust, the conveying structure is installed on the base frame, and the conveying structure is connected to the silo to convey dust; the transfer and storage structure includes a transfer and storage member, a first opening and closing member, and a second opening and closing member; the first opening and closing member and the second opening and closing member are respectively installed on both sides of the transfer and storage member; the first opening and closing member is connected to the conveying structure; the second opening and closing member is adapted to be connected to a dry pump; the transfer and storage member further includes a transfer and storage cavity; the dry pump testing device has a powder conveying state and a testing state; in the powder conveying state, the first opening and closing member is open, and the second opening and closing member is closed, and the conveying structure conveys dust into the transfer and storage cavity; in the testing state, the first opening and closing member is closed, the second opening and closing member is open, and the dry pump sucks the dust inside the transfer and storage cavity.

[0024] This structure is provided with a silo; one side of the conveying structure is connected to the discharge port of the silo, the other end of the conveying structure is connected to the upper end of the first opening and closing member, the lower end of the first opening and closing member is communicated with the upper end of the transfer and storage member, the lower end of the transfer and storage member is connected to the upper end of the second opening and closing member, and the lower end of the second opening and closing member is connected to the dry pump; when testing the dust handling capacity of the dry pump, first fill the silo with dust, then set a series of parameters such as the experimental powder feeding weight and the simulated beat cycle time on the control terminal, both the first opening and closing member and the second opening and closing member are closed, and press the start button to start timing; when the set time is reached, the first opening and closing member opens, and the conveying structure conveys the preset dust through the first opening and closing member into the transfer and storage cavity of the transfer and storage member. When the dust in the transfer and storage cavity reaches the set mass, the first opening and closing member closes, and the conveying mechanism stops powder feeding. At this time, the inside of the transfer and storage cavity is in a normal atmospheric pressure state; then the second opening and closing member opens, and at the same time the dry pump opens to suck the dust in the transfer and storage cavity. The dust handling capacity of the dry pump is tested by the time and mass of sucking the dust in the transfer and storage cavity. After the sucking is completed, the second opening and closing member closes. At this time, the inside of the transfer and storage cavity is in a negative pressure state; both the first opening and closing member and the second opening and closing member are solenoid valves; the dust handling capacity of the dry pump is tested through the above steps. Controlled by the control terminal, using the powder bin, the conveying structure and the transfer and storage structure, the powder is fed quantitatively and timed, simulating the environment when the dry pump is working normally, and making the simulated working environment more stable, so that the test results of the dry pump's high dust handling capacity are more accurate. And by setting the powder bin, the testers do not need to enter the simulation environment frequently, avoiding the easy occurrence of occupational diseases of the staff due to long-term artificial simulation or inadequate protection during artificial simulation, and reducing the labor cost.

[0025] 2. In this embodiment, the transfer structure further includes a third opening / closing member; the third opening / closing member is installed on the transfer member; the dry pump testing device further has a pressure equalizing state, in which the third opening / closing member is open, and the first opening / closing member and the second opening / closing member are closed; the third opening / closing member guides air into the interior of the transfer cavity. The transfer member is a three-way pipe, and the three-way pipe includes a first end, a second end, and a third end; the first end is connected to the first opening / closing member, the second end is connected to the second opening / closing member, and the third end is connected to the third opening / closing member.

[0026] This structure is provided with a third opening / closing member; and the transfer member is a three-way pipe, with its first end connected to the first opening / closing member, the second end connected to the second opening / closing member, and the third end connected to the third opening / closing member; after the test state, both the first opening / closing member and the second opening / closing member are closed, and at this time, the interior of the transfer cavity is in a negative pressure state; when the third opening / closing member is opened, the left end of the third opening / closing member is connected to the air, and air is infused into the interior of the transfer cavity, so that the air pressure in the transfer cavity returns to the atmospheric pressure state again. Then the third opening / closing member is closed, and the powder feeding operation continues to test the dust handling ability of the dry pump. During the powder feeding test, the working life of the dry pump is also tested. When testing the working life of the dry pump, the powder bin can be kept with powder all the time; or it can be tested with air. That is, under normal conditions, the first opening / closing member, the second opening / closing member, and the third opening / closing member are all closed. Then the second opening / closing member is opened, and the test unit runs normally for a period of time. After reaching the set time, the third opening / closing member is opened, and after a certain set time, the opening / closing member is closed. Repeating this process can test the service life of the dry pump and save dust raw materials.

[0027] 3. In this embodiment, a recovery structure is further included; the recovery structure includes a box body and a box cover, and the box cover is detachably covered on the box body; an inlet for powder is provided on one side of the box body, and an air outlet is provided on the other side of the box body, and the inlet for powder is connected to the dry pump. The recovery structure further includes a filter element, and the filter element is arranged between the box body and the box cover and is close to the air outlet.

[0028] This structure is provided with a recovery structure, which includes a box body and a box cover. The box cover is detachably covered on the box body. The powder inlet on the right side of the box body is connected to the dry pump, and an air outlet is opened on the left side of the box body. The filter element is fixedly connected between the box cover and the box body. The dry pump discharges dust, and the dust enters the box body through the powder inlet. The dust is blocked by the filter element and stays in the box body. Finally, all the dust remains inside the recovery box, which can be recycled and reused, and prevents dust from polluting the environment. Among them, the box body and the box cover are matched by a lock catch, which is convenient for disassembly and assembly during maintenance. Description of the Drawings

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is the overall schematic diagram of the dry pump testing device provided in this embodiment;

[0031] Figure 2 It is the installation schematic diagram of the base frame and the lifting structure provided in this embodiment;

[0032] Figure 3 It is the installation schematic diagram of the recycling structure provided in this embodiment;

[0033] Figure 4 It is the side view of the recycling structure provided in this embodiment;

[0034] Figure 5 For Figure 4 the internal sectional view of the recycling structure in the A-A direction;

[0035] Explanation of reference numerals:

[0036] 1 - Base frame;

[0037] 2 - Silo;

[0038] 3 - Conveying structure; 31 - Conveying pipeline; 32 - Power component;

[0039] 4 - Transfer storage structure; 41 - Transfer storage part; 411 - Transfer storage cavity; 42 - First opening and closing part; 43 - Second opening and closing part; 44 - Third opening and closing part;

[0040] 5 - Lifting structure;

[0041] 6 - Recycling structure; 61 - Box body; 611 - Powder inlet; 612 - Air outlet; 613 - Recycling port; 62 - Box cover; 63 - Filter element; 64 - First blocking part; 65 - Second blocking part. Specific embodiments

[0042] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] Embodiment 1

[0047] This embodiment provides a dry pump testing device, as Figures 1 to 5 shown, including: a base frame 1, a silo 2, a conveying structure 3, and a transfer and storage structure 4; wherein, the silo 2 is used to accommodate dust, the conveying structure 3 is installed on the base frame 1, and the conveying structure 3 is connected to the silo 2 to convey dust; the transfer and storage structure 4 includes a transfer and storage member 41, a first opening and closing member 42, and a second opening and closing member 43; the first opening and closing member 42 and the second opening and closing member 43 are respectively installed on both sides of the transfer and storage member 41; the first opening and closing member 42 is connected to the conveying structure 3; the second opening and closing member 43 is adapted to be connected to a dry pump; the transfer and storage member 41 further includes a transfer and storage cavity 411; the dry pump testing device has a powder conveying state and a testing state; in the powder conveying state, the first opening and closing member 42 is opened, and the second opening and closing member 43 is closed, and the conveying structure 3 conveys dust into the transfer and storage cavity 411; in the testing state, the first opening and closing member 42 is closed, the second opening and closing member 43 is opened, and the dry pump sucks the dust inside the transfer and storage cavity 411.

[0048] This structure is configured by setting a silo 2; one side of a conveying structure 3 is connected to the discharge port of the silo 2, the other end of the conveying structure 3 is connected to the upper end of a first opening and closing member 42, the lower end of the first opening and closing member 42 communicates with the upper end of a transfer member 41, the lower end of the transfer member 41 is connected to the upper end of a second opening and closing member 43, and the lower end of the second opening and closing member 43 is connected to a dry pump; when it is necessary to test the dust handling capacity of the dry pump, first fill the silo 2 with dust, and then set a series of parameters such as the experimental powder feeding weight and the simulated beat cycle time on the control terminal. Both the first opening and closing member 42 and the second opening and closing member 43 are closed, and the start button is pressed to start timing; when the set time is reached, the first opening and closing member 42 opens, and the conveying structure 3 conveys the preset dust through the first opening and closing member 42 into the transfer cavity 411 of the transfer member 41. When the dust in the transfer cavity 411 reaches the set mass, the first opening and closing member 42 closes, and the conveying mechanism stops powder feeding. At this time, the transfer cavity 411 is in a normal atmospheric pressure state; then the second opening and closing member 43 opens, and at the same time the dry pump opens to suck the dust in the transfer cavity 411. The dust handling capacity of the dry pump is tested by the time and mass of sucking the dust in the transfer cavity 411. After the sucking is completed, the second opening and closing member 43 closes. At this time, the transfer cavity 411 is in a negative pressure state; both the first opening and closing member 42 and the second opening and closing member 43 are solenoid valves; the dust handling capacity of the dry pump is tested through the above steps. Controlled by the control terminal, using the powder silo, the conveying structure 3 and the transfer structure 4, the powder is fed quantitatively and timed, simulating the environment when the dry pump is working normally, and making the simulated working environment more stable, so that the test result of the dry pump's high dust handling capacity is more accurate. And by setting the powder silo, the test personnel do not need to enter the simulation environment frequently, avoiding the occurrence of occupational diseases of the staff easily caused by long-term artificial simulation or inadequate protection during artificial simulation, and reducing the labor cost.

[0049] In this embodiment, as Figure 1 shown; the transfer structure 4 further includes a third opening and closing member 44; the third opening and closing member 44 is installed on the transfer member 41; the dry pump test device also has a pressure equalization state. In the pressure equalization state, the third opening and closing member 44 opens, and the first opening and closing member 42 and the second opening and closing member 43 close; the third opening and closing member 44 guides air into the interior of the transfer cavity 411. The transfer member 41 is a three-way pipe, and the three-way pipe includes a first end, a second end and a third end; the first end is connected to the first opening and closing member 42, the second end is connected to the second opening and closing member 43, and the third end is connected to the third opening and closing member 44.

[0050] This structure is achieved by setting a third opening and closing member 44; and the transfer member 41 is a three-way pipe, whose first end is connected to the first opening and closing member 42, the second end is connected to the second opening and closing member 43, and the third end is connected to the third opening and closing member 44; after the test state, both the first opening and closing member 42 and the second opening and closing member 43 are closed, and at this time, the transfer chamber 411 is in a negative pressure state; open the third opening and closing member 44, the left end of the third opening and closing member 44 is in communication with the air, and air is infused into the interior of the transfer chamber 411, so that the air pressure in the transfer chamber 411 returns to the atmospheric pressure state again. Then the third opening and closing member 44 is closed, and the powder feeding operation is continued to test the dust handling ability of the dry pump. During the powder feeding test, the working life of the dry pump is also tested. When testing the working life of the dry pump, the powder bin can be kept full of powder all the time; or it can be tested using air. That is, under normal conditions, the first opening and closing member 42, the second opening and closing member 43, and the third opening and closing member 44 are all closed. Then the second opening and closing member 43 is opened, and the test unit runs normally for a period of time. After reaching the set time, the third opening and closing member 44 is opened, and after a certain set time, the third opening and closing member 44 is closed. Repeat this process to test the service life of the dry pump, which can save dust raw materials.

[0051] In this embodiment, as Figure 1 shown; the conveying structure 3 includes a conveying pipeline 31, a power member 32 and a conveying member; one end of the conveying pipeline 31 is connected to the first opening and closing member 42, the other end of the conveying pipeline 31 is communicated with the silo 2, the conveying member is connected to the power member 32, and the conveying member is arranged in the conveying pipeline 31 to transport the dust in the silo 2 to the transfer structure 4. This structure is achieved by setting the conveying pipeline 31, the power member 32 and the conveying member; the conveying member is a screw conveyor, and the power member 32 is a motor; the upper right side of the conveying pipeline 31 is connected to the lower end of the silo 2; the left end of the conveying pipeline 31 is connected to the upper end of the first opening and closing member 42. During the feeding process, the control terminal controls the power member 32 to rotate, and the power member 32 controls the screw conveyor to rotate and convey materials from right to left. And the conveying pipeline 31 is a closed structure, which can prevent dust from flying.

[0052] In this embodiment, as Figure 1 shown; the first end and the second end are arranged vertically along the direction of gravity. This structure is achieved by setting the first end and the second end to be arranged vertically along the direction of gravity; the first end and the second end are on the same vertical line, so that the dust inside the transfer chamber 411 is concentrated at the lower part of the transfer member 41, so that when in the test state, the dry pump can directly suck the dust in the transfer chamber 411, avoiding the generation of a blank period and causing misjudgment of the dust handling ability.

[0053] In this embodiment, as Figure 1 and Figure 2As shown in the figure; it further includes a lifting structure 5, and the lifting structure 5 is installed on the base frame 1. The lifting structure 5 is used to drive the conveying structure 3 to move in the direction of gravity or the opposite direction of gravity. By setting the lifting structure 5, the lifting structure 5 is a worm and worm gear lift. A handle is fixedly connected to the worm and worm gear lift. The lifting structure 5 is controlled to work through the handle, saving energy. The upper end of the lifting structure 5 is fixedly connected to the conveying structure 3. The conveying structure 3 is driven to move up and down by the lifting structure 5, and finally the horizontal height of the second opening and closing member 43 in the transfer structure 4 is adjusted, so as to be applicable to different types of dry pumps.

[0054] In this embodiment, as Figures 3 to 5 As shown in the figure; it further includes a recovery structure 6; the recovery structure 6 includes a box body 61 and a box cover 62, and the box cover 62 is detachably covered on the box body 61; a powder inlet 611 is arranged on one side of the box body 61, and an air outlet 612 is arranged on the other side of the box body 61. The powder inlet 611 is connected to the dry pump. The recovery structure 6 further includes a filter element 63, and the filter element 63 is arranged between the box body 61 and the box cover 62 and is close to the air outlet 612.

[0055] By setting the recovery structure 6, the recovery structure 6 includes a box body 61 and a box cover 62. The box cover 62 is detachably covered on the box body 61. The powder inlet 611 on the right side of the box body 61 is connected to the dry pump. An air outlet 612 is opened on the left side of the box body 61. The filter element 63 is fixedly connected between the box cover 62 and the box body 61. The dry pump discharges dust, and the dust enters the box body 61 through the powder inlet 611. The dust is blocked by the filter element 63 and stays in the box body 61. Finally, all the dust stays inside the recovery box, can be recycled and reused, and prevents dust from polluting the environment. Among them, the box body 61 and the box cover 62 are matched by a buckle, which is convenient for disassembly and assembly during maintenance.

[0056] In this embodiment, as Figures 3 to 5 As shown in the figure; the recovery structure 6 further includes a first blocking portion 64 and a second blocking portion 65. The first blocking portion 64 is arranged inside the box body 61, and the second blocking portion 65 is arranged on the box cover 62. The first blocking portion 64 and the second blocking portion 65 are alternately and spaced apart.

[0057] This structure is provided with a first blocking portion 64 and a second blocking portion 65. Both the first blocking portion 64 and the second blocking portion 65 are baffle plates. The first blocking portion 64 is fixed to the lower end of the box cover 62, and the second blocking portion 65 is fixed to the bottom inside the box body 61. The first blocking portion 64 and the second blocking portion 65 are arranged alternately and at intervals, so that the first blocking portion 64 and the second blocking portion 65 form an S-shaped air duct; the first blocking portion 64 and the second blocking portion 65 near the powder inlet 611 block most of the dust on the right side of the box body 61. By setting the S-shaped air duct, most of the dust precipitates to the front after entering from the powder inlet 611, and finally all the dust remains inside the recycling box, and only a small part is blocked by the filter element 63, thus prolonging the service life of the filter element 63.

[0058] In this embodiment, as Figures 3 to 5 shown; the recycling structure 6 further includes a recycling port 613. The recycling port 613 is arranged on one side of the box body 61 away from the box cover 62, and the recycling port 613 is used to recycle the dust inside the box body 61. This structure is provided with a recycling port 613 at the bottom end of the box body 61. When recycling dust, the recycling port 613 is closed; when the dust needs to be reused, the recycling port 613 is opened to take out the dust inside the box body 61 for repeated use.

[0059] In other alternative embodiments, the lower end of the base frame 1 is further provided with wheels with brakes, which facilitates the movement and fixation of the dry pump testing device.

[0060] In other alternative embodiments, the dry pump testing device further includes a detection and protection mechanism and an alarm; a detection and protection mechanism is added when opening and closing to detect whether the first opening and closing member 42 and the second opening and closing member 43 are in place when opening and closing. If the action is not in place, it will alarm and stop the machine and be linked with the test pump group through the remote control interface. When the powder feeder alarms and no one deals with it after ten minutes, a signal will be given to stop the test pump group, record the shutdown time, and call and send text messages through the remote alarm to remind the operator that the test has a fault alarm; improving the stability of the test system.

[0061] In other alternative embodiments, both ends of the first opening and closing member 42, the second opening and closing member 43 and the third opening and closing member 44 are provided with kf quick connectors; so that the entire test system is connected by kf quick-release connectors, greatly improving the disassembly and assembly efficiency.

[0062] The working principle of the dry pump testing device provided in this embodiment is specifically as follows:

[0063] First, fill the silo 2 with dust completely. Then, set a series of parameters such as the experimental powder feeding weight and the simulated beat cycle time on the control terminal. Both the first opening and closing member 42 and the second opening and closing member 43 are closed, and the start key is pressed to start timing. When the set time is reached, the first opening and closing member 42 opens, and the conveying structure 3 conveys the preset dust through the first opening and closing member 42 into the storage cavity 411 of the storage member 41. When the dust in the storage cavity 411 reaches the set mass, the first opening and closing member 42 closes, and the conveying mechanism stops powder feeding. At this time, the inside of the storage cavity 411 is in a normal atmospheric pressure state. Then, the second opening and closing member 43 opens, and at the same time, the dry pump is turned on to suck the dust in the storage cavity 411. The ability of the dry pump to handle dust is tested by the time and mass of the dust sucked out of the storage cavity 411. After the suction is completed, the second opening and closing member 43 closes.

[0064] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A dry pump testing device, characterized in that, Comprising: Base frame (1); Bin (2), which is used to accommodate dust; Conveying structure (3), which is installed on the base frame (1), and the conveying structure (3) is connected to the bin (2) to convey dust; Transfer structure (4), which includes a transfer member (41), a first opening and closing member (42) and a second opening and closing member (43); the first opening and closing member (42) and the second opening and closing member (43) are respectively installed on both sides of the transfer member (41); the first opening and closing member (42) is connected to the conveying structure (3); the second opening and closing member (43) is adapted to be connected to a dry pump; Wherein, the transfer member (41) further includes a transfer cavity (411); the dry pump testing device has a powder conveying state and a testing state; in the powder conveying state, the first opening and closing member (42) is opened, and the second opening and closing member (43) is closed, and the conveying structure (3) conveys dust into the transfer cavity (411); in the testing state, the first opening and closing member (42) is closed, the second opening and closing member (43) is opened, and the dry pump sucks the dust inside the transfer cavity (411); The transfer structure (4) further includes a third opening and closing member (44); the third opening and closing member (44) is installed on the transfer member (41); The dry pump testing device further has a pressure equalizing state, in which the third opening and closing member (44) is opened, and the first opening and closing member (42) and the second opening and closing member (43) are closed; the third opening and closing member (44) guides air into the inside of the transfer cavity (411); The transfer member (41) is a three-way pipe, and the three-way pipe includes a first end, a second end and a third end; the first end is connected to the first opening and closing member (42), the second end is connected to the second opening and closing member (43), and the third end is connected to the third opening and closing member (44); The conveying structure (3) includes a conveying pipe (31), a power member (32) and a conveying member; One end of the conveying pipe (31) is connected to the first opening and closing member (42), the other end of the conveying pipe (31) is communicated with the bin (2), the conveying member is connected to the power member (32), and the conveying member is arranged inside the conveying pipe (31) to transport the dust in the bin (2) to the transfer structure (4); The first end and the second end are arranged vertically along the direction of gravity.

2. The dry pump testing device according to claim 1, characterized in that, It further includes a lifting structure (5), which is installed on the base frame (1), and the lifting structure (5) is used to drive the conveying structure (3) to move in the direction of gravity or the opposite direction of gravity.

3. The dry pump testing device according to claim 1 or 2, characterized in that, It further includes a recovery structure (6); the recovery structure (6) includes a box body (61) and a box cover (62), and the box cover (62) is detachably covered on the box body (61); one side of the box body (61) is provided with a powder inlet (611), the other side of the box body (61) is provided with an air outlet (612), and the powder inlet (611) is connected to the dry pump.

4. The dry pump testing device according to claim 3, characterized in that, The recovery structure (6) further includes a filter element (63), the filter element (63) is arranged between the box body (61) and the box cover (62), and the filter element (63) is arranged close to the air outlet (612).

5. The dry pump testing device according to claim 4, characterized in that, The recovery structure (6) further includes a first blocking portion (64) and a second blocking portion (65), the first blocking portion (64) is arranged inside the box body (61), the second blocking portion (65) is arranged on the box cover (62), and the first blocking portion (64) and the second blocking portion (65) are arranged alternately and at intervals.

6. The dry pump testing device according to claim 5, characterized in that, The recovery structure (6) further includes a recovery port (613), the recovery port (613) is arranged on the side of the box body (61) away from the box cover (62), and the recovery port (613) is used for recovering the dust in the box body (61).

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