A screw vacuum machine

Abstract

The utility model belongs to screw vacuum pump technical field provides a kind of screw vacuum machine, including shell, oil gas tank, screw vacuum pump, control unit and control cooling unit, the screw vacuum pump is located in shell, the control cooling unit is connected in the top in shell, still including the partition that is located in shell;The control unit, control cooling unit, partition and the inside wall of shell are cooperated and enclose chamber, the partition is equipped with through-hole;The motor of the screw vacuum pump is located in chamber, the pump body of the screw vacuum pump is located outside chamber.The utility model is by the control unit, control cooling unit, partition and the inside wall of shell are cooperated and enclose chamber, like this when placing screw vacuum pump, the motor of screw vacuum pump is placed in chamber, the pump body of screw vacuum pump is placed chamber, further, the motor and pump body of screw vacuum pump are separated, to reduce the influence of temperature to pump body, improve the stability of pump body operation.

Description

Technical Field

[0001] This utility model belongs to the field of screw vacuum pump technology, specifically a screw vacuum machine. Background Technology

[0002] A screw vacuum pump is a pumping device that uses a pair of screws to rotate synchronously at high speed in opposite directions within the pump casing to generate suction and exhaust. It is a replacement product for oil-sealed vacuum pumps and can pump gases containing large amounts of water vapor and small amounts of dust. It is widely used in domestic pharmaceutical, chemical, and semiconductor industries, which have high requirements for clean vacuum.

[0003] CN202220536016.4 discloses a high-stability variable frequency screw vacuum pump, including a protective housing, a screw vacuum unit housed inside the protective housing, a support frame installed below the screw vacuum unit, a shock-absorbing pad fixed under the support frame, an air inlet valve on the screw vacuum unit, an oil spray hole on the screw vacuum unit, a solenoid valve on the screw vacuum unit, and a one-way valve connected to the screw vacuum unit.

[0004] In the above technical solution, the housing is divided into two sections by a heat insulation frame. However, the motor and pump body of the screw vacuum pump are in the same area. When the motor works for too long, it will generate a large amount of heat flow. The heat generated by the motor will spread to the area where the pump body is placed, resulting in thermal interference between the two areas. In severe cases, this will affect the stability of the pump body's operation. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned problems and provide a screw vacuum pump. This screw vacuum pump forms a chamber by combining a control unit, a cooling control unit, a partition, and the inner wall of the housing. When placing the screw vacuum pump, the motor of the screw vacuum pump is placed in the chamber, and the pump body of the screw vacuum pump is placed in the chamber, thereby isolating the motor and the pump body of the screw vacuum pump, reducing the impact of temperature on the pump body, and improving the stability of the pump body operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A screw vacuum machine includes a housing, an oil and gas tank, a screw vacuum pump, a control unit, and a cooling control unit. The oil and gas tank is located inside the housing and has an inlet pipe and an outlet pipe. The inlet pipe is connected to the outlet end of the screw vacuum pump, and the outlet pipe extends out from the top inside the housing. The screw vacuum pump is located inside the housing, and the cooling control unit is connected to the top inside the housing. The machine also includes a partition plate located inside the housing.

[0008] The control unit, the cooling control unit, the partition, and the inner wall of the housing cooperate to form a chamber. The partition has a through hole for the shaft of the screw vacuum pump motor to pass through. The motor of the screw vacuum pump is located in the chamber, and the pump body of the screw vacuum pump is located outside the chamber.

[0009] In the aforementioned screw vacuum machine, the partition includes a first plate and a second plate with an L-shaped structure. One end of the first plate is connected to the control unit, one end of the second plate is connected to the other end of the first plate, and the other end of the second plate is connected to the inner wall of the housing.

[0010] The inner corner surfaces of the first plate and the second plate are both in contact with the edge of the cooling control unit. The control unit is in contact with one side of the cooling control unit. The first plate has a first notch and the second plate has a second notch. The first notch and the second notch cooperate to form a through hole.

[0011] In the aforementioned screw vacuum machine, the first plate body includes a first section and a second section connected to each other. The inner corner surfaces formed by the first section and the second section are in contact with the edge of the cooling control unit. One end of the first section is provided with a first bent portion, which is detachably connected to the control unit. One end of the second section is provided with a second bent portion.

[0012] The second plate includes a first part and a second part that are connected to each other. The inner corner surfaces formed by the first part and the second part are in contact with the edge of the cooling control unit. The first part is provided with a third bend, which is detachably connected to the second bend. The second part is detachably connected to the inner sidewall of the shell.

[0013] The first gap is located on the second segment, and the second gap is located on the first part.

[0014] In the aforementioned screw vacuum machine, the control unit includes a control panel, a mounting bracket, and a control module connected to the mounting bracket. The control panel is located on one side wall of the housing and is electrically connected to the control module. The mounting bracket is vertically arranged inside the housing.

[0015] The mounting bracket has an interconnected closed wall and a connecting wall. The closed wall is fitted to the side of the cooling control unit. The closed wall, the cooling control unit, the first plate and the second plate, and the inner wall of the shell cooperate to form a cavity. The connecting wall is connected to one end of the first plate.

[0016] In the aforementioned screw vacuum machine, the bottom end of the first plate is provided with a first connecting plate, which is detachably connected to the bottom of the housing; the bottom end of the second plate is provided with a second connecting plate, which is detachably connected to the bottom of the housing.

[0017] In the aforementioned screw vacuum machine, the upper end of the first plate is detachably connected to the edge of the cooling control unit, and the upper end of the second plate is detachably connected to the edge of the cooling control unit.

[0018] In the aforementioned screw vacuum machine, multiple heat dissipation holes are provided on the side wall of the housing near the motor of the screw vacuum pump.

[0019] In the aforementioned screw vacuum machine, the inner wall of the housing is provided with a third connecting plate, which is detachably connected to the second part.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This invention forms a chamber by combining the control unit, the cooling control unit, the partition, and the inner wall of the housing. When placing the screw vacuum pump, the motor of the screw vacuum pump is placed inside the chamber, and the pump body of the screw vacuum pump is placed inside the chamber. This separates the motor and the pump body of the screw vacuum pump, thereby reducing the impact of temperature on the pump body and improving the stability of the pump body's operation.

[0022] Moreover, the cooling control unit is part of the enclosed chamber, which can centrally handle the heat generated by the screw vacuum pump motor and also assist in the heat dissipation of the control unit. Attached Figure Description

[0023] Figure 1 This is a perspective view of a screw vacuum machine according to Example 1;

[0024] Figure 2 This is one of the structural schematic diagrams of the cabinet of a screw vacuum machine according to Embodiment 1;

[0025] Figure 3 This is a second schematic diagram of the structure of a screw vacuum machine according to Example 1;

[0026] Figure 4 This is the third schematic diagram of the structure of a screw vacuum machine according to Example 1;

[0027] Figure 5 This is the fourth structural schematic diagram of a screw vacuum machine according to Example 1;

[0028] Figure 6 This is the fifth structural schematic diagram of a screw vacuum machine according to Example 1;

[0029] Figure 7 This is a perspective view of the first plate of a screw vacuum machine according to Embodiment 1;

[0030] Figure 8This is a perspective view of the second plate of a screw vacuum machine according to Embodiment 1;

[0031] The figure labels for each figure are as follows:

[0032] 1. Shell; 11. Third connecting plate; 12. Heat dissipation hole; 2. Oil and gas tank; 21. Gas outlet pipe; 3. Screw vacuum pump; 4. Control unit; 41. Mounting bracket; 411. Sealing wall; 412. Connecting wall; 42. Control panel; 5. Cooling control unit; 6. Partition; 61. First plate; 611. First section; 6111. First bend; 612. Second section; 6121. Second bend; 613. First notch; 614. First connecting plate; 62. Second plate; 621. First part; 6211. Third bend; 622. Second part; 623. Second notch; 624. Second connecting plate; 63. Through hole; 7. Chamber. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] refer to Figures 1-8 A screw vacuum machine includes a housing 1, an oil and gas tank 2, a screw vacuum pump 3, a control unit 4, and a cooling control unit 5. The oil and gas tank 2 is located inside the housing 1 and has an inlet pipe (not shown in the figure) and an outlet pipe 21. The inlet pipe is connected to the outlet end of the screw vacuum pump 3, and the outlet pipe 21 extends out from the top inside the housing 1. The screw vacuum pump 3 is located inside the housing 1, and the cooling control unit 5 is connected to the top inside the housing 1. The machine also includes a partition 6 located inside the housing 1.

[0036] The control unit 4, the cooling control unit 5, the partition 6, and the inner wall of the housing 1 cooperate to form a chamber 7. The partition 6 is provided with a through hole 63 for the shaft of the screw vacuum pump motor 3b to pass through. The motor 3b of the screw vacuum pump is located in the chamber 7, and the pump body 3a of the screw vacuum pump is located outside the chamber 7.

[0037] The structure of the oil and gas tank 2 and the cooling control unit 5 has been disclosed in Chinese patent CN217582490U, so the structure of the oil and gas tank 2 and the cooling control unit 5 will not be described in detail in this embodiment.

[0038] It should be noted here that the pump body of the screw vacuum pump is... Figure 3 In part 3a, the motor of the screw vacuum pump is... Figure 3 In the 3b section, generally speaking, some screw vacuum pumps will be equipped with a protective frame 3c. The protective frame is... Figure 3 In section 3c, this protective bracket 3c is used to protect the shaft of the motor 3b of the screw vacuum pump. Therefore, when the screw vacuum pump 3 is equipped with the protective bracket 3c, the through hole 63 allows the protective bracket to pass through.

[0039] In this design, the cooling control unit 5 is connected to the top inside the housing 1, and a partition 6, together with the cooling control unit 5, the control unit 4, and the inner wall of the housing 1, forms a chamber 7. When installing the screw vacuum pump 3, the motor 3b of the screw vacuum pump is placed inside the chamber 7, and the pump body 3a of the screw vacuum pump is placed outside the chamber 7. In this way, when the motor 3b of the screw vacuum pump is working, most of the heat generated by the motor 3b is in the chamber 7. Since most of the heat is in the chamber 7, the heat diffusion to the area where the pump body 3a of the screw vacuum pump is placed can be limited. In this way, the influence of temperature on the pump body is reduced, and the stability of the pump body operation is improved.

[0040] Preferably, the partition 6 includes a first plate 61 and a second plate 62 with an L-shaped structure. One end of the first plate 61 is connected to the control unit 4, one end of the second plate 62 is connected to the other end of the first plate 61, and the other end of the second plate 62 is connected to the inner wall of the housing 1.

[0041] The inner corner surfaces of the first plate 61 and the second plate 62 are both in contact with the edge of the cooling control unit 5. The control unit 4 is in contact with one side of the cooling control unit 5. The first plate 61 is provided with a first notch 613, and the second plate 62 is provided with a second notch 623. The first notch 613 and the second notch 623 cooperate to form a through hole 63.

[0042] Specifically, both the first plate 61 and the second plate 62 are L-shaped structures. The inner corner surfaces of the first plate 61 and the second plate 62 are fitted with the edge of the cooling control unit 5, and the control unit 4 is fitted with one side of the cooling control unit 5. This can improve the sealing performance and better control the heat in the chamber 7 to diffuse into the area of ​​the pump body 3a of the screw vacuum pump. Generally, the first notch 613 of the first plate 61 and the second notch 623 of the second plate 62 are matched to form a through hole 63 through which the shaft of the motor 3b of the screw vacuum pump passes.

[0043] More preferably, the first plate 61 includes a first segment 611 and a second segment 612 connected to each other. The inner corner surfaces formed by the first segment 611 and the second segment 612 are in contact with the edge of the cooling control unit 5. One end of the first segment 611 is provided with a first bending portion 6111, which is detachably connected to the control unit 4. One end of the second segment 612 is provided with a second bending portion 6121.

[0044] The second plate 62 includes a first part 621 and a second part 622 that are connected to each other. The inner corner surfaces formed by the first part 621 and the second part 622 are in contact with the edge of the cooling control unit 5. The first part 621 is provided with a third bending part 6211, which is detachably connected to the second bending part 6121. The second part 622 is detachably connected to the inner sidewall of the shell 1.

[0045] The first gap 613 is provided on the second segment 612, and the second gap 623 is provided on the first part 621.

[0046] Specifically, after placing the screw vacuum pump 3 inside the housing 1, the first bend 6111 of the first segment 611 is connected to the side of the control unit 4 by bolts. Then, the third bend 6211 of the second segment 612 is connected to the second bend 6121 by bolts. Then, the second segment 612 is connected to the inner wall of the housing 1 by bolts. In this way, the control unit 4, the first segment 611, the second segment 612, the third and fourth segments, the cooling control unit 5, and the inner wall of the housing 1 will form the chamber 7.

[0047] Preferably, the control unit 4 includes a control panel 42, a mounting bracket 41, and a control module connected to the mounting bracket 41. The control panel 42 is disposed on one side wall of the housing 1 and is electrically connected to the control module (not shown in the figure). The mounting bracket 41 is vertically arranged inside the housing 1.

[0048] The mounting bracket 41 has an interconnected closed wall 411 and a connecting wall 412. The closed wall 411 is attached to the side of the cooling control unit 5. The closed wall 411, the cooling control unit 5, the first plate 61 and the second plate 62, and the inner side wall of the shell 1 cooperate to form a chamber 7. The connecting wall 412 is connected to one end of the first plate 61.

[0049] The control module has already been disclosed in Chinese patent CN217129777U, so the structure of the control unit 4 will not be described in detail in this embodiment. Of course, the control module can also be a PLC system well known to those skilled in the art.

[0050] Furthermore, the mounting bracket 41 is vertically installed inside the housing 1. The closed wall 411 of the mounting bracket 41, together with the cooling control unit 5, the first plate 61 and the second plate 62, and the inner side wall of the housing 1, form a cavity 7. One end of the first plate 61 is connected to the connecting wall 412 to complete the fixation.

[0051] More preferably, the bottom end of the first plate 61 is provided with a first connecting plate 614, which is detachably connected to the bottom of the housing 1, and the bottom end of the second plate 62 is provided with a second connecting plate 624, which is detachably connected to the bottom of the housing 1.

[0052] Generally, the first connecting plate 614 can be connected to the bottom of the housing 1 by bolts. Similarly, the second connecting plate 624 can also be connected to the bottom of the housing 1. This can firmly fix the first plate 61 and the second plate 62. The first connecting plate 614 can be fixed to the lower end of the first plate 61 by welding. Similarly, the second connecting plate 624 can also be fixed to the lower end of the second plate 62 by welding.

[0053] In this embodiment, the upper end of the first plate 61 is detachably connected to the edge of the cooling control unit 5, and the upper end of the second plate 62 is detachably connected to the edge of the cooling control unit 5.

[0054] Specifically, the first plate 61 can be connected to the edge of the cooling control unit 5 by bolts, and the upper end of the second plate 62 can also be connected to the edge of the cooling control unit 5 by bolts. This can firmly fix the first plate 61 and the second plate 62, so as to better fit the first plate 61 and the second plate 62 to the edge of the cooling control unit 5.

[0055] Preferably, a plurality of heat dissipation holes 12 are provided on the side wall of the housing 1 near the motor 3b of the screw vacuum pump. The heat dissipation holes 12 can better dissipate the heat generated by the motor 3b of the screw vacuum pump. Further, a third connecting plate 11 is provided on the inner side wall of the housing 1, and the third connecting plate 11 is detachably connected to the second part 622. The second part 622 and the third connecting plate 11 can be connected by bolts.

[0056] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements or modifications can be made without departing from the principle of the present utility model, and these improvements or modifications should also be considered within the protection scope of the present utility model.

Claims

1. A screw vacuum pump, comprising a housing, an oil / gas tank, a screw vacuum pump, a control unit, and a cooling control unit, wherein the oil / gas tank is disposed within the housing, the oil / gas tank having an inlet pipe and an outlet pipe, the inlet pipe being connected to the outlet end of the screw vacuum pump, the outlet pipe extending from the top of the housing, the screw vacuum pump being disposed within the housing, and the cooling control unit being connected to the top of the housing, characterized in that... It also includes partitions located inside the housing; The control unit, the cooling control unit, the partition, and the inner wall of the housing cooperate to form a chamber. The partition has a through hole for the shaft of the screw vacuum pump motor to pass through. The motor of the screw vacuum pump is located in the chamber, and the pump body of the screw vacuum pump is located outside the chamber.

2. The screw vacuum machine according to claim 1, characterized in that, The partition includes an L-shaped first plate and a second plate. One end of the first plate is connected to the control unit, one end of the second plate is connected to the other end of the first plate, and the other end of the second plate is connected to the inner wall of the housing. The inner corner surfaces of the first plate and the second plate are both in contact with the edge of the cooling control unit. The control unit is in contact with one side of the cooling control unit. The first plate has a first notch and the second plate has a second notch. The first notch and the second notch cooperate to form a through hole.

3. A screw vacuum machine according to claim 2, characterized in that, The first plate includes a first segment and a second segment connected to each other. The inner corner surfaces formed by the first segment and the second segment are in contact with the edge of the cooling control unit. One end of the first segment is provided with a first bend, which is detachably connected to the control unit. One end of the second segment is provided with a second bend. The second plate includes a first part and a second part that are connected to each other. The inner corner surfaces formed by the first part and the second part are in contact with the edge of the cooling control unit. The first part is provided with a third bend, which is detachably connected to the second bend. The second part is detachably connected to the inner sidewall of the shell. The first gap is located on the second segment, and the second gap is located on the first part.

4. A screw vacuum machine according to claim 2, characterized in that, The control unit includes a control panel, a mounting bracket, and a control module connected to the mounting bracket. The control panel is located on one side wall of the housing and is electrically connected to the control module. The mounting bracket is vertically arranged inside the housing. The mounting bracket has an interconnected closed wall and a connecting wall. The closed wall is fitted to the side of the cooling control unit. The closed wall, the cooling control unit, the first plate and the second plate, and the inner wall of the shell cooperate to form a cavity. The connecting wall is connected to one end of the first plate.

5. A screw vacuum machine according to claim 2, characterized in that, The bottom end of the first plate is provided with a first connecting plate, which is detachably connected to the bottom of the housing. The bottom end of the second plate is provided with a second connecting plate, which is detachably connected to the bottom of the housing.

6. A screw vacuum machine according to claim 2, characterized in that, The upper end of the first plate is detachably connected to the edge of the cooling control unit, and the upper end of the second plate is detachably connected to the edge of the cooling control unit.

7. A screw vacuum machine according to claim 1, characterized in that, Multiple heat dissipation holes are provided on the side wall of the housing near the motor of the screw vacuum pump.

8. A screw vacuum machine according to claim 3, characterized in that, The inner wall of the housing is provided with a third connecting plate, which is detachably connected to the second part.

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