Anti-corrosion diaphragm vacuum pump

Abstract

The utility model discloses an anti-corrosion diaphragm vacuum pump which comprises a diaphragm vacuum pump body, a filter screen and a connecting assembly are arranged at the water inlet end of the diaphragm vacuum pump body, the connecting assembly is arranged between the filter screen and the diaphragm vacuum pump body and comprises a bearing box, and the bearing box is fixedly connected to the water inlet end of the diaphragm vacuum pump body. A connecting frame is slidably clamped in the bearing box, the filter screen is fixedly connected to one side of an inner cavity of the connecting frame, a plate cover is fixedly connected to the top of the connecting frame, and the positioning assembly is arranged between the bearing box and the plate cover. The arrangement mode that the diaphragm vacuum pump body, the filter screen and the connecting assembly are matched is utilized, the connecting assembly comprises the bearing box, the connecting frame and the plate cover, and the bearing box is fixedly installed at the water inlet end of the diaphragm vacuum pump body, so that when the filter screen is disassembled and cleaned, only the plate cover needs to be pulled upwards; and the connecting frame can drive the filter screen to be separated from the bearing box, so that the filter screen can be detached and cleaned.

Description

Technical Field

[0001] The utility model relates to the field of vacuum pumps, in particular to an anti-corrosion diaphragm vacuum pump. Background Art

[0002] The diaphragm vacuum pump uses a thin film to separate the pumped liquid from the piston and the pump cylinder, thereby protecting the piston and the pump cylinder. The part of the left side of the diaphragm that contacts the liquid is made of corrosion-resistant material or coated with a layer of corrosion-resistant substance, thereby improving the corrosion resistance of the diaphragm vacuum pump and reducing the damage to the diaphragm caused by impurities in the liquid. Usually, a filter is fixedly installed on the water inlet pipe of the diaphragm vacuum pump to filter the impurities in the liquid. However, this directly fixed filter is not convenient for disassembly and cleaning at a later time, and thus has certain defects. Utility Model Content

[0003] The purpose of the utility model is to provide a corrosion-resistant diaphragm vacuum pump to solve the problems raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical solution: an anti-corrosion diaphragm vacuum pump, comprising:

[0005] The diaphragm vacuum pump body has a filter screen disposed at its water inlet end;

[0006] A connecting assembly, the connecting assembly is arranged between the filter screen and the diaphragm vacuum pump body, the connecting assembly comprises a carrying box, the carrying box is fixedly connected to the water inlet end of the diaphragm vacuum pump body, a connecting frame is slidably connected inside the carrying box, the filter screen is fixedly connected to one side of the inner cavity of the connecting frame, and a plate cover is fixedly connected to the top of the connecting frame;

[0007] A positioning component is arranged between the carrying box and the plate cover, and is used to limit the position of the plate cover.

[0008] Preferably, a limiting frame is fixedly connected to the middle of the inner wall of the carrying box, a connecting groove is opened in the middle of the outer wall of the connecting frame, and the outer wall of the limiting frame is slidably engaged with the inner cavity of the connecting groove.

[0009] Preferably, a sealing gasket is provided between the plate cover and the carrying box, a sealing ring is fixedly connected to the top of the carrying box, a groove is provided at the bottom of the plate cover, and the outer wall of the sealing ring is slidably engaged with the inner cavity of the groove.

[0010] Preferably, the positioning assembly includes two fixing plates, the top of the fixing plates are provided with two through holes, the inner cavities of the through holes are slidably sleeved with connecting rods, the tops of the connecting rods are fixedly connected with positioning plates, and the positioning plates are slidably clamped on the top of the plate cover.

[0011] Preferably, two positioning grooves are provided on both sides of the top of the plate cover, a positioning rod is fixedly connected to one side of the bottom of the positioning plate, and the outer wall of the positioning rod is slidably engaged with the inner cavity of the positioning groove.

[0012] Preferably, the bottom of the connecting rod is fixedly connected to a limiting plate, and the outer wall of the connecting rod is slidably sleeved with a spring, and the spring is located between the limiting plate and the fixed plate.

[0013] Technical effects and advantages of the utility model:

[0014] (1) The utility model utilizes a configuration in which a diaphragm vacuum pump body, a filter screen and a connection assembly cooperate with each other. The connection assembly includes a carrying box, a connection frame and a plate cover. The carrying box is fixedly installed on the water inlet end of the diaphragm vacuum pump body. When the filter screen is disassembled and cleaned, the plate cover only needs to be pulled upwards to enable the connection frame to drive the filter screen to separate from the carrying box, so that the filter screen can be disassembled and cleaned.

[0015] (2) The utility model utilizes a connecting frame, a plate cover and a positioning assembly that cooperate with each other. The positioning assembly includes a fixed plate, a connecting rod, a positioning plate, a positioning rod and a spring, so that the spring can apply a downward force to the positioning plate through the connecting rod, and under the action of the positioning rod, the stability of the positioning plate in limiting the position of the plate cover can be ensured, and the positioning plate can be moved upward to separate the positioning rod from the plate cover, and then the positioning plate can be rotated to separate from the plate cover, so that the limitation on the plate cover can be released. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the front structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of the front side of the carrying box of the utility model.

[0018] Figure 3 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0019] Figure 4 It is a schematic diagram of the overall structure of the connection frame of the utility model.

[0020] In the figure: 1. Diaphragm vacuum pump body; 2. Filter screen; 3. Connecting assembly; 31. Carrying box; 32. Connecting frame; 33. Plate cover; 34. Limiting frame; 35. Connecting groove; 36. Sealing gasket; 37. Sealing ring; 4. Positioning assembly; 41. Fixing plate; 42. Connecting rod; 43. Positioning plate; 44. Positioning rod; 45. Limiting plate; 46. Spring. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model provides Figure 1-4 A corrosion-resistant diaphragm vacuum pump is shown, comprising:

[0023] The water inlet end of the diaphragm vacuum pump body 1 is arranged on the filter screen 2. The aperture of the filter screen 2 can filter impurities with a specified diameter index, thereby reducing the damage caused by impurities in the liquid to the anti-corrosion material on the diaphragm inside the diaphragm vacuum pump body 1 when the diaphragm vacuum pump body 1 is working.

[0024] A connecting component 3 is provided between the filter screen 2 and the diaphragm vacuum pump body 1. The connecting component 3 includes a carrying box 31. The carrying box 31 is fixedly connected to the water inlet end of the diaphragm vacuum pump body 1. The inner sliding card of the carrying box 31 is connected with a connecting frame 32. The filter screen 2 is fixedly connected to one side of the inner cavity of the connecting frame 32. The top of the connecting frame 32 is fixedly connected with a plate cover 33. By releasing the limitation of the positioning component 4 on the plate cover 33, the plate cover 33 can be moved upward, so that the connecting frame 32 and the filter screen 2 can be taken out and then cleaned. The middle part of the inner wall of the carrying box 31 is fixedly connected with a limiting frame 34. The limiting frame 34 is in a C shape, so that the limiting frame 34 can not only improve the stability of the connecting frame 32 inside the carrying box 31, but also The probability of impurities in the liquid flowing in through the gap between the connecting frame 32 and the carrying box 31 can be reduced. A connecting groove 35 is provided in the middle of the outer wall of the connecting frame 32. The outer wall of the limit frame 34 is slidably engaged with the inner cavity of the connecting groove 35. A sealing gasket 36 is provided between the plate cover 33 and the carrying box 31. A sealing ring 37 is fixedly connected to the top of the carrying box 31. A groove is provided at the bottom of the plate cover 33. The outer wall of the sealing ring 37 is slidably engaged with the inner cavity of the groove. The sealing ring 37 and the sealing gasket 36 can improve the sealing between the plate cover 33 and the carrying box 31. When the diaphragm vacuum pump body 1 is working, its water inlet end is in a negative pressure state, so that the inside of the carrying box 31 is in a negative pressure state, thereby improving the sealing between the plate cover 33 and the carrying box 31.

[0025] The positioning assembly 4 is arranged between the carrying box 31 and the plate cover 33. The positioning assembly 4 is used to limit the position of the plate cover 33. The positioning assembly 4 includes two fixing plates 41. Two through holes are provided on the top of the fixing plates 41. The inner cavity of the through holes is slidably sleeved with a connecting rod 42. The connecting rod 42 can rotate relative to the fixing plates 41, thereby moving the positioning plate 43 upward to separate the positioning rod 44 from the plate cover 33. Then, the positioning plate 43 can be rotated to release the position limit of the plate cover 33 by the positioning plate 43. The top of the connecting rod 42 is fixedly connected with the positioning plate 43. The positioning plate 43 is slidably engaged with the top of the plate cover 33, and two positioning grooves are provided on both sides of the top of the plate cover 33. A positioning rod 44 is fixedly connected to one side of the bottom of the positioning plate 43, and the outer wall of the positioning rod 44 is slidably engaged with the inner cavity of the positioning groove. The bottom of the connecting rod 42 is fixedly connected to the limiting plate 45, and the outer wall of the connecting rod 42 is slidably sleeved with a spring 46, which is located between the limiting plate 45 and the fixed plate 41. The spring 46 can give the connecting rod 42 a downward elastic force through the limiting plate 45, thereby ensuring the stability of the positioning plate 43 and the positioning rod 44 being engaged with the top of the plate cover 33.

[0026] Working principle of this utility model:

[0027] When the diaphragm vacuum pump body 1 is working, the filter screen 2 can filter the liquid at the water inlet end of the diaphragm vacuum pump body 1, reducing the damage to the diaphragm inside the diaphragm vacuum pump body 1 caused by impurities entrained in the liquid, and when the diaphragm vacuum pump body 1 is working, the water inlet end of the diaphragm vacuum pump body 1 is in a negative pressure state, so that the inside of the carrying box 31 is in a negative pressure state, and under the action of the sealing gasket 36 and the sealing ring 37, the plate cover 33 can maintain a sealed state with the carrying box 31, and under the action of the spring 46 and the positioning rod 44, the positioning plate 43 can also limit the position of the plate cover 33 again, thereby improving the sealing between the plate cover 33 and the carrying box 31;

[0028] When the filter 2 is to be disassembled and cleaned, first pull the positioning plate 43 upwards to separate the positioning rod 44 on one side of the bottom of the positioning plate 43 from the plate cover 33, then rotate the positioning plate 43 so that the positioning plate 43 no longer limits the position of the plate cover 33, repeat the above steps to separate the positioning plates 43 from the plate cover 33, then pull the plate cover 33 upwards so that the plate cover 33 drives the connecting frame 32 and the filter 2 to separate from the carrying box 31, and then it can be disassembled and cleaned.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A corrosion-resistant diaphragm vacuum pump, characterized in that: include: A diaphragm vacuum pump body (1) is provided with a filter screen (2) at its water inlet end; A connecting assembly (3), the connecting assembly (3) being arranged between the filter screen (2) and the diaphragm vacuum pump body (1), the connecting assembly (3) comprising a carrying box (31), the carrying box (31) being fixedly connected to the water inlet end of the diaphragm vacuum pump body (1), the interior of the carrying box (31) being slidably connected to a connecting frame (32), the filter screen (2) being fixedly connected to one side of the inner cavity of the connecting frame (32), and the top of the connecting frame (32) being fixedly connected to a plate cover (33); A positioning component (4) is arranged between the carrying box (31) and the plate cover (33), and the positioning component (4) is used to define the position of the plate cover (33).

2. The corrosion-resistant diaphragm vacuum pump according to claim 1, characterized in that: A limiting frame (34) is fixedly connected to the middle of the inner wall of the carrying box (31), a connecting groove (35) is provided in the middle of the outer wall of the connecting frame (32), and the outer wall of the limiting frame (34) is slidably engaged with the inner cavity of the connecting groove (35).

3. The corrosion-resistant diaphragm vacuum pump according to claim 1, characterized in that: A sealing gasket (36) is provided between the plate cover (33) and the carrying box (31); a sealing ring (37) is fixedly connected to the top of the carrying box (31); a groove is provided at the bottom of the plate cover (33); and the outer wall of the sealing ring (37) is slidably engaged with the inner cavity of the groove.

4. The corrosion-resistant diaphragm vacuum pump according to claim 1, characterized in that: The positioning assembly (4) comprises two fixing plates (41), the top of the fixing plates (41) being provided with two through holes, the inner cavity of the through holes being slidably sleeved with a connecting rod (42), the top of the connecting rod (42) being fixedly connected with a positioning plate (43), and the positioning plate (43) being slidably clamped on the top of the plate cover (33).

5. The corrosion-resistant diaphragm vacuum pump according to claim 4, characterized in that: Two positioning grooves are provided on both sides of the top of the plate cover (33), and a positioning rod (44) is fixedly connected to one side of the bottom of the positioning plate (43), and the outer wall of the positioning rod (44) is slidably engaged with the inner cavity of the positioning groove.

6. The corrosion-resistant diaphragm vacuum pump according to claim 4, characterized in that: The bottom of the connecting rod (42) is fixedly connected to a limiting plate (45), and the outer wall of the connecting rod (42) is slidably sleeved with a spring (46), and the spring (46) is located between the limiting plate (45) and the fixed plate (41).

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