Cantilever type liquid ring vacuum pump

Abstract

The utility model discloses a cantilever type liquid ring vacuum pump, which relates to the technical field of vacuum pumps, and comprises a main body mechanism, the tail end of the main body mechanism is provided with a heat dissipation mechanism, the bottom of the main body mechanism is provided with a supporting mechanism, the heat dissipation mechanism comprises an electric rotating rod, the electric rotating rod is fixedly connected with heat dissipation fan blades, and the heat dissipation fan blades are fixedly connected with the supporting mechanism. And fixing plates are arranged at the two ends of the electric rotating rod. An electric rotating rod is pulled upwards to drive fixing plates at the two ends to move synchronously, so that an arc-shaped clamping groove extrudes a hemispherical clamping block and a first spring, air in the hemispherical clamping block is extruded out of an air outlet hole, and then the hemispherical clamping block can be taken out of the arc-shaped clamping groove; and then the electric rotating rod and the cooling fan blades are detached from the vacuum pump, so that the effect of conveniently overhauling the cooling mechanism is achieved, the long-time normal operation of the cooling mechanism is ensured, and the normal cooling of the vacuum pump is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps, in particular to a cantilever liquid ring vacuum pump. Background Art

[0002] Existing liquid ring vacuum pumps are divided into two basic types or basic structures according to the characteristics of their impeller installation structure: one type is that the impeller is installed in the middle of the pump, with side covers and bearing supports at both ends, which is called a "double support" structure; the other type is that the impeller is installed on a special extended shaft extension of the motor or the shaft extension of a special bearing frame for the pump, and the liquid ring vacuum pump is also called a cantilever liquid ring vacuum pump.

[0003] The heat dissipation mechanism included in the existing vacuum pump cannot be disassembled, which makes the maintenance of the heat dissipation mechanism more troublesome. Furthermore, when the vacuum pump runs for a long time, the normal operation of the heat dissipation mechanism cannot be ensured. Now a cantilever liquid ring vacuum pump is proposed. Summary of the Invention

[0004] The purpose of the utility model is to provide a cantilever liquid ring vacuum pump to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A cantilever liquid ring vacuum pump comprises a main body mechanism, a heat dissipation mechanism is provided at the tail end of the main body mechanism, and a support mechanism is provided at the bottom of the main body mechanism.

[0007] The heat dissipation mechanism includes an electric rotating rod, to which a heat dissipation fan blade is fixedly connected. Fixed plates are provided at both ends of the electric rotating rod, and one end of the electric rotating rod is fixedly connected to the fixed plate, and the other end is rotatably connected to the fixed plate. A hemispherical block is fixedly connected to one side of the fixed plate.

[0008] A further improvement of the technical solution of the present utility model is that: an air outlet is provided on the hemispherical clamping block, a first spring is fixedly connected to the inside of the hemispherical clamping block, one end of the first spring is fixedly connected to one side of the fixed plate, and when the hemispherical clamping block is squeezed, the air inside it can be discharged outward through the air outlet, so that the hemispherical clamping block and the first spring are in a flat state.

[0009] A further improvement of the technical solution of the present utility model is that the main body mechanism includes a shell, a main shaft is provided inside the shell, an impeller and a liquid ring are provided on the main shaft, an air outlet pipe and an air inlet pipe are provided on the shell, and the rotation of the main shaft can drive the impeller to rotate synchronously.

[0010] A further improvement of the technical solution of the present utility model is that: the tail end of the shell is fixedly connected to a ventilation plate, one side of the ventilation plate is fixedly connected to a connecting frame, the connecting frame and the ventilation plate are both provided with arc-shaped slots, the hemispherical block is movably connected in the arc-shaped slots, the bottom of the shell is fixedly connected to a support leg, the hemispherical block enters the arc-shaped slots, thereby fixing the positions of the two sets of fixed plates.

[0011] A further improvement of the technical solution of the present utility model is that: the support mechanism includes a hinged rod, the hinged rod is hinged on the support leg, a storage rod is hinged on the hinged rod, and a first fixing hole and a second fixing hole are provided on the storage rod. The first fixing hole and the second fixing hole are one high and one low, so that the position of the support rod can be fixed according to needs.

[0012] A further improvement of the technical solution of the present utility model is that: the interior of the storage rod is slidably connected to a support rod, the interior of the support rod is fixedly connected to a second spring, one end of the second spring is fixedly connected to a positioning block, and when the pressure on the second spring disappears, the positioning block can be driven to move into the first fixed hole and the second fixed hole.

[0013] A further improvement of the technical solution of the present utility model is that the positioning block is movably connected to the inside of the first fixing hole and the second fixing hole, and a counterweight block is hinged at one end of the support rod. The positioning block enters the first fixing hole and the second fixing hole to fix the support rod.

[0014] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0015] The utility model provides a cantilever liquid ring vacuum pump, which is characterized in that the electric rotating rod is pulled upward to drive the fixed plates at both ends to move synchronously, so that the arc-shaped clamping groove squeezes the hemispherical clamping block and the first spring, thereby squeezing the air in the hemispherical clamping block out of the air outlet hole, and the hemispherical clamping block can be taken out of the arc-shaped clamping groove, and then the electric rotating rod and the heat dissipation fan blades are removed from the vacuum pump, thereby facilitating the inspection and maintenance of the heat dissipation mechanism, thereby ensuring that the heat dissipation mechanism can operate normally for a long time and avoiding affecting the normal heat dissipation of the vacuum pump.

[0016] The utility model provides a cantilever liquid ring vacuum pump, wherein the storage rods are respectively bent outwards with the hinge rod as the axis, the positioning block is pressed downward to make it enter the support rod, the second spring is squeezed, and the support rod is pulled downward so that the counterweight block is in contact with the ground, and at the same time the positioning block is located at the rear side of the second fixing hole, and the second spring drives the positioning block to move into the second fixing hole to fix the support rod, and then the angle of the counterweight block is adjusted so that the counterweight block is completely in contact with the ground, so that the storage rod, the support rod, the counterweight block, the ground and the support legs form a triangle, thereby improving the supporting strength of the vacuum pump and thus improving the stability of the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic structural diagram of the cross section of the heat dissipation mechanism of the present invention;

[0019] Figure 3 This is a schematic structural diagram of the cross-section of the main mechanism of the present utility model;

[0020] Figure 4 It is a structural diagram of the support mechanism of the utility model.

[0021] In the figure: 1. heat dissipation mechanism; 11. electric rotating rod; 12. heat dissipation fan blade; 13. fixing plate; 14. hemispherical clamping block; 15. air outlet; 16. first spring; 2. main body mechanism; 21. outer shell; 22. main shaft; 23. impeller; 24. liquid ring; 25. air outlet pipe; 26. air inlet pipe; 27. ventilation plate; 28. connecting frame; 29. arc-shaped slot; 20. support leg; 3. support mechanism; 31. hinged rod; 32. storage rod; 33. first fixing hole; 34. second fixing hole; 35. support rod; 36. second spring; 37. positioning block; 38. counterweight block. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the embodiments: Example

[0023] like Figure 1-4 As shown, the utility model provides a cantilever liquid ring vacuum pump, including a main body mechanism 2, a heat dissipation mechanism 1 is provided at the tail end of the main body mechanism 2, a support mechanism 3 is provided at the bottom of the main body mechanism 2, the heat dissipation mechanism 1 includes an electric rotating rod 11, a heat dissipation fan blade 12 is fixedly connected to the electric rotating rod 11, and a fixing plate 13 is provided at both ends of the electric rotating rod 11, and one end of the electric rotating rod 11 is fixedly connected to the fixing plate 13, and the other end is rotatably connected to the fixing plate 13, a hemispherical clamping block 14 is fixedly connected to one side of the fixing plate 13, an air outlet 15 is opened on the hemispherical clamping block 14, a first spring 16 is fixedly connected to the interior of the hemispherical clamping block 14, and one end of the first spring 16 is fixedly connected to one side of the fixing plate 13;

[0024] Specifically, the electric rotating rod 11 and the fixing plates 13 at both ends are pushed downward along the gap between the ventilation plate 27 and the connecting frame 28. The hemispherical block 14 and the first spring 16 are squeezed by the ventilation plate 27 and the connecting frame 28, so that the air in the hemispherical block 14 is discharged outward from the air outlet 15. When the hemispherical block 14 moves into the arc-shaped slot 29, the pressure on the first spring 16 disappears, pushing the hemispherical block 14 into the arc-shaped slot 29, and the air inside it enters the hemispherical block 14, thereby improving the fit between the hemispherical block 14 and the arc-shaped slot 29, and the electric rotating rod 11 and the heat dissipation fan blade 12 can be fixed. , then start the electric rotating rod 11, drive the heat dissipation fan blades 12 to rotate, and blow air into the housing 21, thereby dissipating heat for the vacuum pump, pull the electric rotating rod 11 upward, drive the fixed plates 13 at both ends to move synchronously, so that the arc-shaped card slot 29 squeezes the hemispherical card block 14 and the first spring 16, thereby squeezing the air in the hemispherical card block 14 out of the air outlet 15, and then the hemispherical card block 14 can be taken out from the arc-shaped card slot 29, and then the electric rotating rod 11 and the heat dissipation fan blades 12 are removed from the vacuum pump, thereby facilitating the maintenance of the heat dissipation mechanism 1, thereby ensuring that the heat dissipation mechanism 1 can operate normally for a long time. Example

[0025] like Figure 1-4 As shown, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the main body mechanism 2 includes a shell 21, a main shaft 22 is provided inside the shell 21, an impeller 23 and a liquid ring 24 are provided on the main shaft 22, an air outlet pipe 25 and an air inlet pipe 26 are provided on the shell 21, a ventilation plate 27 is fixedly connected to the tail end of the shell 21, a connecting frame 28 is fixedly connected to one side of the ventilation plate 27, an arc-shaped card slot 29 is provided on the connecting frame 28 and the ventilation plate 27, the hemispherical card block 14 is movably connected in the arc-shaped card slot 29, and a support leg 20 is fixedly connected to the bottom of the shell 21;

[0026] Specifically, the gas mixture enters the interior of the housing 21 through the air inlet pipe 26. The gas mixture is located in the impeller cavity between the inner diameter of the liquid ring 24 and the root of the impeller 23. The main shaft 22 rotates, driving the impeller 23 to rotate synchronously. The volume between the liquid ring 24 and the root of the impeller 23 decreases, and the gas mixture is compressed until it reaches the main outlet pipe 25 and is finally discharged through the outlet pipe 25. Example

[0027] like Figure 1-4As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the support mechanism 3 includes a hinged rod 31, the hinged rod 31 is hinged on the support leg 20, a storage rod 32 is hinged on the hinged rod 31, a first fixing hole 33 and a second fixing hole 34 are opened on the storage rod 32, a support rod 35 is slidably connected to the interior of the storage rod 32, a second spring 36 is fixedly connected to the interior of the support rod 35, one end of the second spring 36 is fixedly connected to a positioning block 37, the positioning block 37 is movably connected to the interior of the first fixing hole 33 and the second fixing hole 34, and a counterweight 38 is hinged to one end of the support rod 35;

[0028] Specifically, the storage rod 32 is bent outward with the hinge rod 31 as the axis, so that the tail end of the storage rod 32 moves out of the support leg 20, and then the positioning block 37 is pressed downward so that it is located under the first fixing hole 33 and enters the support rod 35. At the same time, the second spring 36 is squeezed to pull the support rod 35 downward so that the counterweight 38 is in contact with the ground. At the same time, the positioning block 37 is located behind the second fixing hole 34, and the second spring 36 loses pressure, driving the positioning block 37 to move into the second fixing hole 34, thereby fixing the support rod 35. Then, the angle of the counterweight 38 is adjusted so that the counterweight 38 is completely in contact with the ground, increasing the friction between the ground and the storage rod 32, support rod 35, counterweight 38, the ground and support leg 20 form a triangle, which improves the support strength of the vacuum pump and thus improves the stability of the vacuum pump.

[0029] The following is a detailed description of the working principle of the cantilever liquid ring vacuum pump.

[0030] like Figure 1-4As shown, the electric rotating rod 11 is started to drive the heat dissipation fan blades 12 to rotate, and the wind can be blown into the housing 21, thereby dissipating heat for the vacuum pump, and the gas mixture enters the interior of the housing 21 through the air inlet pipe 26. The gas mixture is located in the impeller cavity between the inner diameter of the liquid ring 24 and the root of the impeller 23. The main shaft 22 rotates, driving the impeller 23 to rotate synchronously. The volume between the liquid ring 24 and the root of the impeller 23 is reduced, and the gas mixture is compressed until it reaches the main outlet pipe 25 and is finally discharged through the outlet pipe 25. When the vacuum pump is running, the storage rod 32 is respectively bent outward with the hinge rod 31 as the axis, so that the tail end of the storage rod 32 moves out of the support leg 20, and then the positioning block 37 is pressed downward to be located under the first fixing hole 33 and enter the support rod 35. At the same time, the second spring 36 is squeezed to pull the support rod 35 downward so that the counterweight block 38 is in contact with the ground. At the same time, the positioning block 37 is located at the rear side of the second fixing hole 34, and the second spring 36 loses pressure, driving the positioning block 37 to move into the second fixing hole 34, thereby fixing the support rod 35, and then adjusting the angle of the counterweight block 38 so that the counterweight block 38 is completely in contact with the ground, thereby improving the supporting strength of the vacuum pump and thus improving the stability of the vacuum pump. After the vacuum pump is used, the electric rotating rod 11 is pulled upward, driving the fixing plates 13 at both ends to move synchronously, so that the arc-shaped slot 29 squeezes the hemispherical block 14 and the first spring 16, thereby squeezing the air in the hemispherical block 14 from the air outlet 15, and the hemispherical block 14 can be taken out of the arc-shaped slot 29, and then the electric rotating rod 11 and the heat dissipation fan blades 12 are removed from the vacuum pump, thereby facilitating the maintenance of the heat dissipation mechanism 1, thereby ensuring that the heat dissipation mechanism 1 can operate normally for a long time.

[0031] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A cantilever liquid ring vacuum pump, comprising a main body (2), characterized in that: A heat dissipation mechanism (1) is provided at the tail end of the main body mechanism (2), and a support mechanism (3) is provided at the bottom of the main body mechanism (2); The heat dissipation mechanism (1) comprises an electric rotating rod (11), a heat dissipation fan blade (12) is fixedly connected to the electric rotating rod (11), and a fixing plate (13) is provided at both ends of the electric rotating rod (11), one end of the electric rotating rod (11) is fixedly connected to the fixing plate (13), and the other end is rotatably connected to the fixing plate (13), and a hemispherical block (14) is fixedly connected to one side of the fixing plate (13).

2. A cantilever liquid ring vacuum pump according to claim 1, characterized in that: An air outlet hole (15) is provided on the hemispherical clamping block (14), and a first spring (16) is fixedly connected inside the hemispherical clamping block (14), with one end of the first spring (16) fixedly connected to one side of the fixing plate (13).

3. The cantilever liquid ring vacuum pump according to claim 1, characterized in that: The main body mechanism (2) comprises a housing (21), a main shaft (22) is provided inside the housing (21), an impeller (23) and a liquid ring (24) are provided on the main shaft (22), and an air outlet pipe (25) and an air inlet pipe (26) are provided on the housing (21).

4. A cantilever liquid ring vacuum pump according to claim 3, characterized in that: The rear end of the housing (21) is fixedly connected to a ventilation plate (27), one side of the ventilation plate (27) is fixedly connected to a connecting frame (28), both the connecting frame (28) and the ventilation plate (27) are provided with an arc-shaped card slot (29), the hemispherical card block (14) is movably connected in the arc-shaped card slot (29), and the bottom of the housing (21) is fixedly connected to a support leg (20).

5. The cantilever liquid ring vacuum pump according to claim 1, characterized in that: The support mechanism (3) comprises a hinged rod (31), the hinged rod (31) is hinged on the support leg (20), a storage rod (32) is hinged on the hinged rod (31), and a first fixing hole (33) and a second fixing hole (34) are formed on the storage rod (32).

6. The cantilever liquid ring vacuum pump according to claim 5, characterized in that: The interior of the storage rod (32) is slidably connected to a support rod (35), the interior of the support rod (35) is fixedly connected to a second spring (36), and one end of the second spring (36) is fixedly connected to a positioning block (37).

7. The cantilever liquid ring vacuum pump according to claim 6, characterized in that: The positioning block (37) is movably connected to the inside of the first fixing hole (33) and the second fixing hole (34), and a counterweight block (38) is hingedly connected to one end of the support rod (35).

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