Diaphragm type alcohol injection pump

Abstract

The utility model discloses a diaphragm type alcohol injection pump and belongs to the technical field of diaphragm pumps, the diaphragm type alcohol injection pump comprises a rear shell and a front cavity shell, a driving structure is arranged in the rear shell, the front cavity shell is connected with the front end face of the rear shell in a sealed mode, a round opening is formed in a front plate of the rear shell, and a detachable diaphragm piece covers the opening; the upper end face and the lower end face of the front cavity shell are connected with an outlet one-way valve and an inlet one-way valve respectively. An alcohol sensor set is fixedly installed on the inner wall of the rear shell. When maintenance and overhaul are needed, the whole diaphragm body can be taken down for replacement through simple disassembly operation, meanwhile, the outer chuck serving as an easily-corroded part can also be conveniently replaced, the overall leakproofness of the pump can be ensured in the mode that the easily-corroded part is regularly replaced, the replacement process is simple and efficient, and the replacement efficiency is improved. The maintenance work efficiency can be greatly improved, and meanwhile, the alcohol sensor group can play a role in monitoring whether alcohol substances leak or not.

Description

Technical Field

[0001] The present application relates to the technical field of diaphragm pumps, and in particular to a diaphragm alcohol injection pump. Background Art

[0002] The diaphragm 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 diaphragm that contacts the liquid is made of corrosion-resistant materials or coated with a layer of corrosion-resistant substances. At present, diaphragm pumps are important equipment for fluid transportation and are widely used in the fields of chemical industry, medicine, food, etc. During the oil field exploitation process, it is necessary to regularly add liquid agents such as methanol or corrosion inhibitors to the oil and gas wells to prevent corrosion and scaling of the wellbore and oil production equipment. The increase in the demand for the transportation of alcohol fuels (such as methanol and ethanol) has put forward higher requirements for the sealing and corrosion resistance of diaphragm pumps.

[0003] The diaphragm, which plays a core role in the existing diaphragm pump, is usually fixedly connected to the pump body structure and does not have good detachability. Since the diaphragm and some components are in direct contact with the transported liquid and are easily corroded and damaged, the operation of replacement and maintenance is cumbersome and time-consuming, which is not conducive to efficient maintenance work. In addition, if the sealing of the pump body is damaged and the transported liquid leaks, there is a lack of timely detection measures. Therefore, a diaphragm alcohol injection pump is proposed to address the above problems. Utility Model Content

[0004] In response to the shortcomings of the prior art, the present application provides a diaphragm alcohol injection pump that overcomes the shortcomings of the prior art and aims to solve the problem that the diaphragm and parts that are in direct contact with the transported liquid are inconvenient to install and disassemble, resulting in difficulty in efficient maintenance work, and it is difficult to detect leakage of the transported liquid in a timely manner.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] A diaphragm alcohol injection pump comprises a rear shell and a front cavity shell, wherein a driving structure is arranged in the rear shell, the front cavity shell is tightly connected to the front end face of the rear shell, a circular opening is opened on the front plate of the rear shell and a detachable diaphragm member is covered on the opening, the detachable diaphragm member comprises a fixed outer clamping ring and a movable outer clamping ring, wherein the fixed outer clamping ring is fixedly arranged on the inner wall of the front plate of the rear shell, a diaphragm body is clamped between the fixed outer clamping ring and the movable outer clamping ring, an outer chuck and an inner chuck are respectively arranged on the front and rear end faces of the middle part of the diaphragm body, a connecting shaft is fixedly connected to the inner chuck, an outlet check valve and an inlet check valve are respectively connected to the upper and lower end faces of the front cavity shell, and an alcohol sensor group is fixedly installed on the inner wall of the rear shell.

[0007] By adopting the above technical scheme, the driving structure can be used to drive the connecting shaft to move forward and backward, thereby realizing the push-pull diaphragm body to bend and deform forward and backward, so that the transported liquid is sucked from the inlet one-way valve and discharged from the outlet one-way valve under the alternating action of positive pressure and negative pressure. When maintenance and repair are required, the diaphragm body can be removed by simply separating the fixed outer clamping ring from the movable outer clamping ring. At this time, the middle part of the diaphragm body is also connected to an outer clamping disk and an inner clamping disk. After the outer clamping disk and the inner clamping disk are separated, the entire diaphragm body can be removed for replacement. At the same time, the outer clamping disk, which is a corrosive part, can also be easily replaced. The overall airtightness of the pump can be ensured by regularly replacing corrosive parts, and the replacement process is simple and efficient, which can greatly improve the efficiency of maintenance work. At the same time, the alcohol sensor group can monitor whether alcohol substances are leaking.

[0008] As a preferred technical solution of the present application, the fixed outer clamp ring and the movable outer clamp ring are fixedly connected by connecting bolts, and the outer clamping plate and the inner clamping plate are fixedly connected by connecting bolts.

[0009] By adopting the above technical solution, the fitting, clamping and separation between the fixed outer clamping ring and the movable outer clamping ring can be realized, and the fitting, clamping and separation between the outer chuck and the inner chuck can be realized.

[0010] As a preferred technical solution of the present application, the end surfaces of the fixed outer clamping ring and the movable outer clamping ring that are in contact with the diaphragm body are both fixedly provided with two closed rings, and the end surfaces of the outer chuck and the inner chuck that are in contact with the diaphragm body are both fixedly provided with two closed rings.

[0011] By adopting the above technical scheme, the airtightness of the connection between the fixed outer clamp ring, the movable outer clamp ring and the diaphragm body can be strengthened by a closed ring that is in close contact with the diaphragm body and produces an extrusion deformation effect, and the airtightness of the connection between the outer clamping disk, the inner clamping disk and the diaphragm body can be strengthened.

[0012] As a preferred technical solution of the present application, the driving structure includes a mounting plate fixedly arranged on the rear shell, on which a centrally arranged cylinder is fixedly mounted, and the output shaft end of the cylinder is detachably connected to the shaft end of the connecting shaft.

[0013] By adopting the above technical solution, the connecting shaft can be driven by the cylinder to move forward and backward, thereby realizing the forward and backward bending deformation of the push-pull diaphragm body, so that the diaphragm pump can complete the liquid transportation.

[0014] As a preferred technical solution of the present application, the alcohol sensor group includes a methanol sensor and an ethanol sensor arranged on the inner wall of the rear shell, and the two are arranged relative to each other. Air holes are opened on both sides of the rear plate of the rear shell, and the setting height of the air holes is the same as the setting height of the methanol sensor and the ethanol sensor.

[0015] By adopting the above technical solution, if leakage occurs when transporting methanol or ethanol, the transported substance molecules can float with the airflow and contact the methanol sensor and the ethanol sensor, and then be detected by the two sensors, which can play a role in monitoring whether leakage occurs.

[0016] As a preferred technical solution of the present application, the fixed cover on the rear shell is provided with an inspection cover, and the inspection cover is detachably connected to the rear shell.

[0017] By adopting the above technical solution, it is possible to facilitate inspection and maintenance of the structure inside the rear shell.

[0018] The beneficial effects of the present application are as follows: when maintenance and overhaul are required, the diaphragm body can be removed simply by separating the fixed outer clamp ring from the movable outer clamp ring. At this time, the middle part of the diaphragm body is also connected to an outer clamping plate and an inner clamping plate. After the outer clamping plate and the inner clamping plate are separated, the entire diaphragm body can be removed for replacement. At the same time, the outer clamping plate, which is a corrosive part, can also be easily replaced. The overall airtightness of the pump can be ensured by regularly replacing corrosive parts, and the replacement process is simple and efficient, which can greatly improve the efficiency of maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of this application;

[0020] Figure 2 This is a schematic diagram of the structure of the detachable diaphragm member of the present application;

[0021] Figure 3 A cross-sectional view of the structure of this application;

[0022] Figure 4 This is a top view of the local structure of this application.

[0023] In the figure: 1. rear shell; 11. inspection cover; 12. air hole; 2. drive structure; 21. mounting plate; 22. cylinder; 3. removable diaphragm; 31. fixed outer clamp ring; 32. movable outer clamp ring; 33. diaphragm body; 34. inner clamping plate; 35. outer clamping plate; 36. connecting shaft; 301. connecting bolt; 302. sealing ring; 4. front cavity shell; 5. outlet check valve; 6. inlet check valve; 7. alcohol sensor group; 71. methanol sensor; 72. ethanol sensor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] Reference Figure 1 A diaphragm alcohol injection pump comprises a rear shell 1 and a front cavity shell 4, wherein a driving structure 2 is arranged in the rear shell 1, the front cavity shell 4 is tightly connected with the front end face of the rear shell 1, a circular opening is arranged on the front plate of the rear shell 1 and a detachable diaphragm member 3 is arranged on the opening, an outlet check valve 5 and an inlet check valve 6 are connected to the upper and lower end faces of the front cavity shell 4 respectively, and an alcohol sensor group 7 is fixedly installed on the inner wall of the rear shell 1. By adopting the above technical scheme, the driving structure 2 can drive the connecting shaft 36 to move forward and backward, thereby realizing the forward and backward bending deformation of the push-pull diaphragm body 33, so that the transported liquid is sucked from the inlet check valve 6 and discharged from the outlet check valve 5 under the alternating action of positive pressure and negative pressure, and the alcohol sensor group 7 can monitor whether the alcohol substance leaks. In addition, an inspection cover 11 is arranged on the fixed cover of the rear shell 1, and the inspection cover 11 is detachably connected to the rear shell 1. This structural form can facilitate the inspection and maintenance of the structure in the rear shell 1.

[0026] Reference Figure 2 The detachable diaphragm member 3 includes a fixed outer clamping ring 31 and a movable outer clamping ring 32, wherein the fixed outer clamping ring 31 is fixedly arranged on the inner wall of the front plate of the rear shell 1, and a diaphragm body 33 is sandwiched between the fixed outer clamping ring 31 and the movable outer clamping ring 32, and an outer clamping plate 35 and an inner clamping plate 34 are respectively arranged on the front and rear end surfaces of the middle part of the diaphragm body 33, and a connecting shaft 36 is fixedly connected to the inner clamping plate 34. When maintenance and repair are needed, the diaphragm body 33 can be removed by simply separating the fixed outer clamping ring 31 from the movable outer clamping ring 32. At this time, the middle part of the diaphragm body 33 is also connected with an outer clamping plate 35 and an inner clamping plate 34. After the outer clamping plate 35 and the inner clamping plate 34 are separated, the diaphragm body 33 can be completely removed for replacement. At the same time, the outer clamping plate 35 as a corrosion-prone part can also be easily replaced. The overall airtightness of the pump can be ensured by regularly replacing the corrosion-prone parts, and the replacement process is simple and efficient, which can greatly improve the efficiency of maintenance work.

[0027] Reference Figure 2 The fixed outer clamp ring 31 and the movable outer clamp ring 32 are fixedly connected by connecting bolts 301, and the outer chuck 35 and the inner chuck 34 are fixedly connected by connecting bolts 301. By adopting the above technical scheme, the fitting, clamping and separation between the fixed outer clamp ring 31 and the movable outer clamp ring 32 can be achieved, and the fitting, clamping and separation between the outer chuck 35 and the inner chuck 34 can be achieved.

[0028] Reference Figure 2The end surfaces of the fixed outer clamp ring 31 and the movable outer clamp ring 32 that are in contact with the diaphragm body 33 are both fixedly provided with two sealing rings 302, and the end surfaces of the outer chuck 35 and the inner chuck 34 that are in contact with the diaphragm body 33 are both fixedly provided with two sealing rings 302. By adopting the above technical scheme, the sealing ring 302 that is in close contact with the diaphragm body 33 and produces an extrusion deformation effect can be used to strengthen the sealing of the connection between the fixed outer clamp ring 31, the movable outer clamp ring 32 and the diaphragm body 33, and strengthen the sealing of the connection between the outer chuck 35, the inner chuck 34 and the diaphragm body 33.

[0029] Reference Figure 3 The driving structure 2 includes a mounting plate 21 fixedly mounted on the rear shell 1, on which a centrally arranged cylinder 22 is fixedly mounted, and the output shaft end of the cylinder 22 is detachably connected to the shaft end of the connecting shaft 36. By adopting the above technical solution, the connecting shaft 36 can be driven forward and backward by the cylinder 22, thereby realizing the forward and backward bending deformation of the push-pull diaphragm body 33, so that the diaphragm pump can complete the liquid transportation.

[0030] Reference Figure 4 The alcohol sensor group 7 includes a methanol sensor 71 and an ethanol sensor 72 arranged on the inner wall of the rear shell 1. The two are arranged opposite to each other. Air holes 12 are opened on both sides of the rear plate of the rear shell 1. The setting height of the air holes 12 is the same as the setting height of the methanol sensor 71 and the ethanol sensor 72. By adopting the above technical solution, if leakage occurs during the transportation of methanol or ethanol, the transported substance molecules can float with the air flow and contact the methanol sensor 71 and the ethanol sensor 72, and then be detected by the two sensors, which can play a role in monitoring whether leakage occurs.

[0031] Working principle: When pumping liquid, the cylinder 22 in the driving structure 2 can drive the connecting shaft 36 to move forward and backward, thereby realizing the push-pull diaphragm body 33 to bend and deform forward and backward, so that the transported liquid is sucked from the inlet check valve 6 under the alternating action of positive pressure and negative pressure, and discharged from the outlet check valve 5, thereby realizing the pumping effect of the liquid.

[0032] When maintenance and overhaul is required, the diaphragm body 33 can be removed simply by separating the fixed outer clamp ring 31 from the movable outer clamp ring 32. At this time, the middle part of the diaphragm body 33 is also connected to an outer clamp plate 35 and an inner clamp plate 34. After the outer clamp plate 35 and the inner clamp plate 34 are separated, the diaphragm body 33 can be completely removed for replacement. At the same time, the outer clamp plate 35, which is a corrosive part, can also be easily replaced. The overall airtightness of the pump can be ensured by regularly replacing corrosive parts, and the replacement process is simple and efficient, which can greatly improve the efficiency of maintenance work.

[0033] In addition, the alcohol sensor group 7 includes a methanol sensor 71 and an ethanol sensor 72. If leakage occurs when transporting methanol or ethanol, the transported substance molecules can float with the airflow and contact the methanol sensor 71 and the ethanol sensor 72, and then be detected by the two sensors, which can play a role in monitoring whether leakage occurs.

[0034] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A diaphragm alcohol injection pump, comprising a rear housing (1) and a front chamber housing (4), characterized in that: A driving structure (2) is arranged in the rear shell (1), the front chamber shell (4) is hermetically connected to the front end face of the rear shell (1), a circular opening is opened on the front plate of the rear shell (1), and a detachable diaphragm member (3) is arranged on the opening, the detachable diaphragm member (3) comprises a fixed outer clamping ring (31) and a movable outer clamping ring (32), wherein the fixed outer clamping ring (31) is fixedly arranged on the inner wall of the front plate of the rear shell (1), a diaphragm body (33) is sandwiched between the fixed outer clamping ring (31) and the movable outer clamping ring (32), an outer clamping disc (35) and an inner clamping disc (34) are respectively arranged on the front and rear end faces of the middle part of the diaphragm body (33), and a connecting shaft (36) is fixedly connected to the inner clamping disc (34), the upper and lower end faces of the front chamber shell (4) are respectively connected to the outlet check valve (5) and the inlet check valve (6), and an alcohol sensor group (7) is fixedly installed on the inner wall of the rear shell (1).

2. A diaphragm alcohol injection pump according to claim 1, characterized in that: The fixed outer clamping ring (31) and the movable outer clamping ring (32) are fixedly connected via a connecting bolt (301), and the outer clamping plate (35) and the inner clamping plate (34) are fixedly connected via a connecting bolt (301).

3. A diaphragm alcohol injection pump according to claim 1, characterized in that: The end surfaces of the fixed outer clamp ring (31) and the movable outer clamp ring (32) that are in contact with the diaphragm body (33) are both fixedly provided with two closed rings (302), and the end surfaces of the outer clamping plate (35) and the inner clamping plate (34) that are in contact with the diaphragm body (33) are both fixedly provided with two closed rings (302).

4. A diaphragm alcohol injection pump according to claim 1, characterized in that: The driving structure (2) comprises a mounting plate (21) fixedly mounted on the rear housing (1), a centrally arranged cylinder (22) being fixedly mounted on the mounting plate (21), and an output shaft end of the cylinder (22) being detachably connected to a shaft end of a connecting shaft (36).

5. A diaphragm alcohol injection pump according to claim 1, characterized in that: The alcohol sensor group (7) comprises a methanol sensor (71) and an ethanol sensor (72) arranged on the inner wall of the rear shell (1), the two being arranged opposite to each other, air holes (12) being provided on both sides of the rear plate of the rear shell (1), the air holes (12) being arranged at the same height as the methanol sensor (71) and the ethanol sensor (72).

6. A diaphragm alcohol injection pump according to claim 1, characterized in that: The upper fixed cover of the rear shell (1) is provided with an inspection upper cover (11), and the inspection upper cover (11) is detachably connected to the rear shell (1).

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