Nested air cylinder structure of oil-free vertical vacuum pump

Abstract

The utility model relates to the technical field of oil-free vertical vacuum pumps, and discloses a nested cylinder structure of an oil-free vertical vacuum pump, which comprises a bottom plate, and a transmission component is arranged at the top of the bottom plate. After the rotating rod is rotated, the locking barrel moves towards the two ends, the locking block is matched with the locking opening of the outer sleeve piece to enable the embedded cylinder to be tightly pressed in the outer sleeve piece, and therefore the embedded cylinder can be rapidly installed in the outer sleeve piece in an embedded mode. The oil-free vertical vacuum pump can be conveniently combined and mounted without looking for a tool to screw a bolt; by means of the fixed connection ring which can be adjusted in a sliding mode and is provided with the sensing head and the data processor which is electrically connected with the buzzer, buzzing reminding can be conducted when gas leakage occurs due to the fact that the connection position of the gas inlet or the gas outlet and an external pipeline is not tight. When gas leakage occurs at the joint of the gas inlet or the gas outlet and the external pipeline, the gas leakage can be quickly prompted in time, so that a worker can handle the gas leakage in time.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-free vertical vacuum pumps, in particular to a nested cylinder structure of an oil-free vertical vacuum pump. Background Art

[0002] Oil-free vertical vacuum pump Oil-free vacuum pump is a mechanical vacuum pump that can operate without any oil for lubrication. It has the advantages of simple structure, easy operation, convenient maintenance, no pollution to the environment, etc. Oil-free vacuum pump has good durability and is a dual-purpose vacuum pump for vacuuming and compression. It is a basic equipment for obtaining vacuum with a very wide range of applications. Compared with oil pumps, oil-free vacuum pumps have lower vacuum degree and smaller air volume, but they are small in size, easy to install, simple to maintain, easy to move, do not produce oil smoke, and do not pollute the environment. They are especially suitable for use in laboratories with higher requirements.

[0003] The existing oil-free vertical vacuum pump is usually mainly composed of a cylinder, an isolation chamber, an air inlet, an air outlet, a transmission assembly and a drive motor. The air inlet and the air outlet are arranged on the outside of the cylinder. When the drive motor is running, the crank inside the transmission assembly is driven to cooperate with the drive shaft to displace the piston inside the cylinder. The air inlet valve and the air outlet valve arranged in the cylinder enable the air inlet and the air outlet of the cylinder to achieve suction and exhaust. The cylinder is usually welded or threaded to the top of the isolation chamber when connected, so that the cylinder structure is inconvenient to connect or disassemble, and it is not convenient to assemble and use the oil-free vertical vacuum pump; and the air inlet and the air outlet of the cylinder are usually connected to an external pipeline for use, and then the connection of the pipeline is inconvenient for the operator to find when gas leakage occurs, so that the workers cannot deal with the gas leakage problem in time. For this reason, we propose a nested cylinder structure for an oil-free vertical vacuum pump. Utility Model Content

[0004] The utility model aims to provide a nested cylinder structure of an oil-free vertical vacuum pump to solve the problems in the above background technology that it is inconvenient to install the cylinder and it is inconvenient for operators to find gas leakage at the pipeline connection.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an oil-free vertical vacuum pump nested cylinder structure, comprising:

[0006] A bottom plate, a transmission assembly is arranged on the top of the bottom plate, a driving motor fixedly connected to the bottom plate is arranged on the side wall of the transmission assembly, an isolation cavity is arranged on the top of the transmission assembly, a transmission shaft is arranged inside the isolation cavity, an outer set is arranged on the top of the isolation cavity, an embedded cylinder is matched inside the outer set, a piston cavity is arranged inside the embedded cylinder, a plurality of limiting rings are arranged on the top of the embedded cylinder, a locking cylinder is matched inside the limiting ring, a locking block is arranged on the side wall of the locking cylinder, a locking opening matched with the locking block is opened on the inner wall of the outer set, and a rotating rod is matched inside the locking block;

[0007] A data processor, the data processor is fixedly connected to the side wall of the outer set, the data processor is electrically connected to a buzzer, an air inlet and an air outlet are respectively provided at both ends of the embedded cylinder, a fixing part is fixedly connected to the side wall of the outer set, a side slide groove and a sliding hole are provided on the outer wall of the fixing part, a sliding block is slidably matched inside the side slide groove, a connecting block is provided at the bottom of the sliding block, a fixing ring matched with the air inlet is provided at the bottom of the connecting block, an inner embedded strip is embedded inside the fixing ring, and a plurality of induction heads electrically connected to the data processor are embedded on the inner wall of the inner embedded strip.

[0008] Preferably, a piston fixed to the transmission shaft is arranged inside the piston chamber.

[0009] Preferably, a limiting strip matched with the limiting ring is provided on the top of the locking cylinder.

[0010] Preferably, the side wall of the outer casing is provided with side openings matching the air inlet and the air outlet.

[0011] Preferably, both ends of the rotating rod are respectively provided with a positive thread and a negative thread.

[0012] Preferably, a trigger bar is provided on the top of the rotating rod.

[0013] Preferably, a locking bolt is provided at the top of the sliding hole.

[0014] Preferably, a bottom opening is provided at the bottom of the fixing ring.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model places the embedded cylinder inside the outer set, rotates the rotating rod, so that the locking cylinder moves to both ends under the limit of the limit strip and the limit ring, and then the locking block enters the locking port so that the locking block of the locking cylinder abuts against the inclined surface of the locking port, and the locking cylinder will be squeezed downward, thereby pressing the embedded cylinder tightly against the inside of the outer set, so that the embedded cylinder can be quickly nested and installed inside the outer set, and there is no need to find tools to tighten the bolts, which is convenient for assembling and installing the oil-free vertical vacuum pump, and the structure is simple and easy to operate.

[0017] 2. The utility model slides a sliding block inside the fixing part so that the connecting block cooperates with the fixing ring to cooperate with the connection between the air inlet or the air outlet and the external pipe. When the connection between the air inlet or the air outlet and the external pipe is not tight and gas leakage occurs, the airflow will be sensed by the sensor head and the data will be transmitted to the data processor. After processing the data, the data processor turns on the buzzer to give a buzzing reminder. It can quickly give a timely reminder when gas leakage occurs at the connection between the air inlet or the air outlet and the external pipe, so that the staff can take timely measures, which is convenient for the use of the oil-free vertical vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the combined structure of the rotating rod, the locking cylinder and the limiting ring of the utility model;

[0020] Figure 3 It is a schematic diagram of the combined structure of the fixing member, the sliding block and the fixing ring of the utility model;

[0021] Figure 4 For the utility model Figure 1 Schematic diagram of the enlarged structure at position A in the middle.

[0022] In the figure: 100, bottom plate; 101, transmission assembly; 102, drive motor; 103, isolation chamber; 110, outer set; 111, piston chamber; 112, side opening; 120, embedded cylinder; 121, locking opening; 130, transmission shaft; 140, locking cylinder; 141, limit ring; 142, rotating rod; 143, trigger strip; 144, locking block; 200, data processor; 201, buzzer; 202, air inlet; 203, air outlet; 210, fixing part; 211, side slide groove; 212, sliding hole; 213, locking bolt; 214, sliding block; 215, connecting block; 220, fixing ring; 221, embedded strip; 222, sensor head; 223, bottom opening. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] See also Figure 1-Figure 4 , the oil-free vertical vacuum pump nested cylinder structure shown in the figure includes:

[0026] A transmission assembly 101 is disposed on the top of the bottom plate 100.

[0027] In some embodiments, a crank connected to a transmission shaft 130 is disposed inside the transmission assembly 101, and a flywheel is disposed at the power input end of the crank. The flywheel is coordinated with the power output end of the drive motor 102 through a transmission belt, so that the transmission shaft 130 can drive the piston to reciprocate inside the piston chamber 111 to realize the normal operation of the oil-free vertical vacuum pump. This is a common prior art and structure.

[0028] The side wall of the transmission component 101 is provided with a driving motor 102 fixed to the bottom plate 100. The driving motor 102 uses a device of the brand Onok on the market with a model number of 40M-R3230A5-C, which is electrically connected to an external motor button switch. The top of the transmission component 101 is provided with an isolation cavity 103, and a transmission shaft 130 is provided inside the isolation cavity 103. The top of the isolation cavity 103 is provided with an outer set 110. The outer set 110 has an overall rectangular structure, and the embedded cylinder 120 is a rectangular structure but slightly smaller than the outer set 110. The outer set 110 is slidably matched with the embedded cylinder 120 inside. A sealing rubber ring matched with the bottom of the embedded cylinder 120 is arranged inside the kit 110, a piston chamber 111 is arranged inside the embedded cylinder 120, and a plurality of commonly used inlet valves and outlet valves are arranged on the outer wall of the piston chamber 111, a plurality of limiting rings 141 are arranged on the top of the embedded cylinder 120, a locking cylinder 140 is matched inside the limiting ring 141, a locking block 144 is arranged on the side wall of the locking cylinder 140, a locking opening 121 matched with the locking block 144 is opened on the inner wall of the outer kit 110, an inclined surface matched with the locking block 144 is arranged inside the locking opening 121, and a rotating rod 142 is matched inside the locking block 144;

[0029] The data processor 200 is fixed to the side wall of the outer set 110 by bolts. The data processor 200 uses a device of Siemens model 6ES7288-3AR04-0AA0 on the market. The data processor 200 is electrically connected to a buzzer 201. The buzzer 201 uses a device of ILOSAM on the market. The two ends of the embedded cylinder 120 are respectively provided with an air inlet 202 and an air outlet 203. The side wall of the outer set 110 is fixed with a fixing member 210 by bolts. The outer wall of the connector 210 is provided with a side slide groove 211 and a sliding hole 212. A sliding block 214 is slidably matched inside the side slide groove 211. A connecting block 215 is provided at the bottom of the sliding block 214. A fixed ring 220 matched with the air inlet 202 is provided at the bottom of the connecting block 215. The fixed ring 220 is made of elastic plastic commonly used in the market. An inner insert strip 221 is embedded inside the fixed ring 220. A plurality of induction heads 222 electrically connected to the data processor 200 are embedded on the inner wall of the inner insert strip 221.

[0030] In some embodiments, the sensing head 222 uses an STM32 airflow sensor of the commercial brand BeePoint IoT, and the fixing ring 220 is symmetrically arranged at the air inlet 202 and the air outlet 203 on both sides of the outer kit 110 .

[0031] Specifically, a piston is disposed inside the piston chamber 111 and is fixed to the transmission shaft 130 by bolts.

[0032] Furthermore, a limiting strip matched with the limiting ring 141 is arranged on the top of the locking cylinder 140 .

[0033] Furthermore, the side wall of the outer set 110 is provided with a side opening 112 matched with the air inlet 202 and the air outlet 203. When the embedded cylinder 120 is connected to the outer set 110, the air inlet 202 and the air outlet 203 need to be slid downward in coordination with the side opening 112.

[0034] Furthermore, both ends of the rotating rod 142 are respectively provided with positive threads and negative threads, and the locking cylinder 140 is symmetrically arranged at both ends of the rotating rod 142. The locking cylinder 140 is provided with threads matching the positive threads and the negative threads.

[0035] Furthermore, a trigger bar 143 is provided on the top of the rotating rod 142 to facilitate the rotation of the rotating rod 142 .

[0036] It is worth mentioning that a locking bolt 213 is provided on the top of the sliding hole 212, and the locking bolt 213 is threadedly connected to the top of the sliding block 214. Tightening the locking bolt 213 can lock the sliding block 214 in cooperation with the sliding hole 212. The sliding block 214 slides in cooperation with the interior of the fixing part 210, and baffles are provided on both sides thereof to cooperate with the side sliding grooves 211.

[0037] It is worth noting that a bottom opening 223 is disposed at the bottom of the fixing ring 220 .

[0038] In some embodiments, the electrical components and electrical equipment mentioned above all use external power sources.

[0039] In addition, the circuits, electronic components and modules involved in the utility model are all prior art, and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to the internal structure and method.

[0040] Working principle: When installing the oil-free vertical vacuum pump, after placing the embedded cylinder 120 inside the outer kit 110, rotate the rotating rod 142, so that the locking cylinder 140 moves to both ends under the limit of the limit strip and the limit ring 141, and then the locking block 144 enters the locking port 121 so that the locking block 144 of the locking cylinder 140 presses against the inclined surface of the locking port 121, the locking cylinder 140 will be squeezed downward, and then the embedded cylinder 120 is pressed tightly against the inside of the outer kit 110, so that the embedded cylinder 120 can be quickly nested and installed inside the outer kit 110, and there is no need to find tools to tighten the bolts, which is convenient for assembling and installing the oil-free vertical vacuum pump. The structure is simple and easy to operate; when the oil-free vertical vacuum pump is in use First, slide the sliding block 214 inside the fixing part 210 so that the connecting block 215 cooperates with the fixing ring 220 to slide and adjust to fit the connection between the air inlet 202 or the air outlet 203 and the external pipe. Then, when the connection between the air inlet 202 or the air outlet 203 and the external pipe is not tight and gas leakage occurs, the airflow will be sensed by the sensor head 222 and the data will be transmitted to the data processor 200. After processing the data, the data processor 200 turns on the buzzer 201 for buzzing reminder, which can quickly give timely reminders when gas leakage occurs at the connection between the air inlet 202 or the air outlet 203 and the external pipe, so that the staff can take timely measures, which is convenient for the use of the oil-free vertical vacuum pump.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The oil-free vertical vacuum pump has a nested cylinder structure, characterized in that: include: A bottom plate (100) is provided with a transmission assembly (101) on the top of the bottom plate (100), a driving motor (102) fixedly connected to the bottom plate (100) is provided on the side wall of the transmission assembly (101), an isolation cavity (103) is provided on the top of the transmission assembly (101), a transmission shaft (130) is provided inside the isolation cavity (103), an outer set (110) is provided on the top of the isolation cavity (103), and an embedded cylinder (130) is provided inside the outer set (110). 20), a piston cavity (111) is arranged inside the embedded cylinder (120), a plurality of limiting rings (141) are arranged on the top of the embedded cylinder (120), a locking cylinder (140) is matched inside the limiting ring (141), a locking block (144) is arranged on the side wall of the locking cylinder (140), a locking opening (121) matched with the locking block (144) is opened on the inner wall of the outer set (110), and a rotating rod (142) is matched inside the locking block (144); A data processor (200), the data processor (200) is fixedly connected to the side wall of the outer set (110), the data processor (200) is electrically connected to a buzzer (201), the two ends of the embedded cylinder (120) are respectively provided with an air inlet (202) and an air outlet (203), the side wall of the outer set (110) is fixedly connected to a fixing member (210), and the outer wall of the fixing member (210) is provided with a side sliding groove (211) and a sliding hole (212). ), a sliding block (214) is slidably matched inside the side sliding groove (211), a connecting block (215) is arranged at the bottom of the sliding block (214), a fixing ring (220) matched with the air inlet (202) is arranged at the bottom of the connecting block (215), an inner embedding strip (221) is embedded inside the fixing ring (220), and a plurality of sensor heads (222) electrically connected to the data processor (200) are embedded on the inner wall of the inner embedding strip (221).

2. The nested cylinder structure of the oil-free vertical vacuum pump according to claim 1 is characterized in that: A piston fixedly connected to the transmission shaft (130) is arranged inside the piston chamber (111).

3. The nested cylinder structure of the oil-free vertical vacuum pump according to claim 2 is characterized in that: The top of the locking cylinder (140) is provided with a limiting strip matched with the limiting ring (141).

4. The nested cylinder structure of the oil-free vertical vacuum pump according to claim 3 is characterized in that: The side wall of the outer casing (110) is provided with a side opening (112) that matches the air inlet (202) and the air outlet (203).

5. The nested cylinder structure of the oil-free vertical vacuum pump according to claim 4 is characterized in that: Both ends of the rotating rod (142) are respectively provided with a positive thread and a negative thread.

6. The nested cylinder structure of the oil-free vertical vacuum pump according to claim 5, characterized in that: A detent bar (143) is arranged on the top of the rotating rod (142).

7. The nested cylinder structure of the oil-free vertical vacuum pump according to claim 6 is characterized in that: A locking bolt (213) is arranged at the top of the sliding hole (212).

8. The nested cylinder structure of the oil-free vertical vacuum pump according to claim 7 is characterized in that: The bottom of the fixing ring (220) is provided with a bottom opening (223).

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