High-pressure diaphragm pump with stable output

Abstract

The utility model provides a stable-output high-pressure diaphragm pump which comprises a pump shell, two sets of symmetrically-arranged air chambers and medium chambers are arranged in the pump shell and connected through a shaft, and the two sets of symmetrically-arranged air chambers and medium chambers are combined into a whole. The partition plate is located on the side face of the pump shell. The air valve is communicated with the air cavity through an air path pipe group and is positioned on the side surface, opposite to the partition plate, of the pump shell; and the main shaft bushing is arranged in the pump shell. The air cavity is communicated with the air valve through the air channel pipe set to form a unique air channel design, kinetic energy from the air inlet can be converted into mechanical energy of the shaft to the maximum extent, then the mechanical energy is converted into pressure energy of air and media in the cavity, the maximum self-suction capacity of 0.07 MPa can be achieved, and the service life of the air pump is prolonged. And therefore, the liquid can be quickly and uniformly conveyed into the pump cavity under high pressure, and the overall stable operation capability is better.

Description

TECHNICAL FIELD

[0001] The utility model belongs to high pressure diaphragm pump technical field for methanol, especially relate to a high pressure diaphragm pump of stable output. BACKGROUND

[0002] Diaphragm pump is a kind of form more special in volumetric pump.It is by a diaphragm piece back and forth to promote the new year studio volume to absorb and discharge liquid.Gas-driven diaphragm pump is mainly composed of transmission part and diaphragm cylinder head two parts.Transmission part is the driving mechanism of diaphragm piece back and forth to promote, its transmission form has mechanical rotation, hydraulic transmission and pneumatic transmission etc.The more widely used is hydraulic transmission.

[0003] The self-suction capacity of the existing high pressure diaphragm pump is poor, which leads to that liquid cannot be quickly, uniformly delivered to the pump cavity under high pressure, and further leads to that the stable running capacity of the high pressure diaphragm pump under high pressure condition is poor.

[0004] In view of this, how to solve the defects in the above technical scheme has become one of the problems to be solved in the high pressure diaphragm pump technical field for methanol. INVENTION CONTENTS

[0005] In view of the problems in the background art, the utility model provides a high pressure diaphragm pump of stable output, which comprises:

[0006] Pump shell,

[0007] Two groups of symmetrical air chambers and medium chambers are arranged in the pump shell and connected by a shaft to combine them into one body.

[0008] Partition, located on the side of the pump shell.

[0009] Air valve, connected to the air chamber through the air pipe group, and located on the side of the pump shell opposite to the partition.

[0010] Main shaft bushing, arranged in the pump shell, and the main shaft passes through the main shaft bushing, and the two ends are sequentially installed with main shaft sliding sleeve, inner pressure plate, diaphragm and outer pressure plate,

[0011] And the side cover adjacent to the outer pressure plate is connected.

[0012] Optionally, the air pipe group comprises two groups of filter cartridges, balls and ball seats,

[0013] And it further comprises a discharge and suction short pipe,

[0014] The filter cartridges, balls and ball seats sequentially installed at the inlet of the high pressure diaphragm pump are installed at the inlet end of the discharge and suction short pipe.

[0015] Optionally, a ball seat, a ball and a filter cartridge are sequentially installed at the outlet of the high-pressure diaphragm pump,

[0016] A discharge suction short pipe is installed at the outlet end of the air valve.

[0017] Optionally, the discharge suction short pipe is located at the side of the second valve cover of the air valve,

[0018] The discharge suction short pipe is installed on the base through bolts,

[0019] The discharge suction short pipe is installed with a plug at both ends.

[0020] Optionally, the air valve comprises a piston valve,

[0021] The air valve further comprises a valve shell,

[0022] The piston valve is provided with a piston shaft,

[0023] The piston valve is further provided with a piston valve sealing gasket on one side.

[0024] Optionally, the piston valve sealing gasket and the piston valve are installed in the valve shell in a staggered manner.

[0025] Optionally, the air valve further comprises a second valve cover,

[0026] The second valve cover is provided with a second valve cover bushing,

[0027] The second valve cover bushing is provided with a valve cover gasket,

[0028] The first valve cover which is symmetrically arranged with the second valve cover is provided with a sealing assembly.

[0029] Optionally, the sealing assembly comprises a first valve cover bushing arranged in the first valve cover,

[0030] The first valve cover bushing is provided with a T-shaped plug groove,

[0031] The T-shaped plug groove is provided with a T-shaped plug sealing gasket which is used in cooperation with the T-shaped plug groove and is used for sealing connection.

[0032] Optionally, the air valve further comprises a valve cover partition plate arranged at the side of the first valve cover,

[0033] The valve cover partition plate is provided with a partition plate bushing.

[0034] Optionally, the ball and the ball seat are made of a corrosion-resistant Teflon material,

[0035] The high-pressure diaphragm pump is made of a corrosion-resistant stainless steel material.

[0036] In summary, the beneficial effects of the present application are:

[0037] (1) The air chamber of the utility model forms a unique air path design through the air path pipe group and the air valve, and can convert the kinetic energy from the air inlet into mechanical energy of the shaft to the maximum extent, convert the pressure energy of the air and medium in the chamber, and realize self-suction capacity of 0.07MPa, so that the liquid can be quickly, uniformly and stably delivered into the pump chamber under high pressure.

[0038] (2) The high-pressure diaphragm pump of the utility model is made of corrosion-resistant stainless steel, and the ball and the ball seat are made of special corrosion-resistant Teflon material, so that the physical and chemical properties of methanol delivery can be met, methanol corrosion can be resisted, and the service life of the pump is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is an embodiment of the whole structure of the utility model of a stable output high-pressure diaphragm pump.

[0040] Figure 2 It is a partial structure diagram of an embodiment of the utility model of a stable output high-pressure diaphragm pump.

[0041] Figure 3 It is an embodiment of the utility model Figure 1 The partial structure is enlarged.

[0042] Reference signs:

[0043] 1, pump shell; 2, side cover; 3, diaphragm; 4, inner pressure plate; 5, outer pressure plate; 6, main shaft; 7, main shaft bushing; 8, main shaft sliding sleeve; 9, discharge and suction short pipe; 10, plug; 11, filter cartridge; 12, ball; 13, ball seat; 14, valve housing; 15, partition plate; 16, first valve cover; 17, first valve cover bushing; 18, T-shaped plug; 19, T-shaped plug gasket; 20, valve cover partition plate; 21, partition plate bushing; 22, second valve cover; 23, valve cover gasket; 24, second valve cover bushing; 25, piston shaft; 26, piston valve; 27, piston valve gasket base. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be further described in detail below by combining with the drawings and specific embodiments. Although the example embodiments are disclosed in the drawings, it should be understood that the utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to facilitate a thorough understanding of the utility model and to convey the complete concept of the utility model to those skilled in the art.

[0045] In the description of the specification, the description of the terms "certain embodiments", "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0046] In the present utility model, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "a plurality of" refers to two or more than two, unless otherwise explicitly limited. The terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0047] As shown in Figures 1 to 3 The present embodiment provides a stable output high-pressure diaphragm pump, comprising a pump shell 1, two groups of symmetrical air chambers and medium chambers are arranged in the inside of the pump shell 1, and are connected through a shaft 6, which is combined as a whole, a main shaft bushing 7 is fixedly installed in the inner cavity of the pump shell 1, and the main shaft 6 passes through the main shaft bushing 7, and the two ends are sequentially installed with a main shaft sliding sleeve 8, an inner pressure plate 4, a diaphragm 3 and an outer pressure plate 5, and the shaft end of the main shaft 6 is fastened and connected through a fastener, and finally the opposite side cover 2 is assembled to complete the overall assembly.

[0048] A group of diaphragms 3 are arranged in the air chamber and the medium chamber respectively, outer pressure plates 5 and inner pressure plates 4 are arranged on one side of the diaphragm 3 respectively, and the outer pressure plate 5 is connected with the side cover 2 adjacent thereto, and the outer pressure plate can be fixed to the side cover 2 adjacent thereto through a fastening bolt.

[0049] In the present embodiment, when the diaphragm 3 reciprocates, the inner pressure plate can have certain buffering and stabilizing effect, so as to avoid excessive pressure in the cavity and cause damage to the diaphragm, and improve the stability of the high-pressure diaphragm pump in operation.

[0050] The diaphragm is pressed by the outer pressure plate.

[0051] Further, the air chamber is communicated with the air valve through the air path pipe group, the air valve and the partition plate are respectively reserved on the side surface of the pump shell 1, the partition plate 15 is fixed and connected on the side surface of the pump shell 1 through the fastening screw, and the air valve is installed on the side surface of the pump shell 1 opposite to the partition plate 15.

[0052] Further, the high-pressure diaphragm pump further comprises two groups of filter cartridges 11, balls 12 and ball seats 13, which are sequentially installed at the inlet of the high-pressure diaphragm pump, the filter cartridge 11, the ball 12 and the ball seat 13 are installed at the inlet end of the discharge suction short pipe which has been installed with the base 28,

[0053] The ball seat 13, the ball 12 and the filter cartridge 11 are sequentially installed at the outlet of the high-pressure diaphragm pump, and are installed at the outlet end of the discharge suction short pipe which has been installed with the base 28.

[0054] Further, the discharge suction short pipe 9 is located on one side of the second valve cover 22 of the air valve.

[0055] Further, the discharge suction short pipe 9 is installed on the base 28 through the bolt, and the two ends of the discharge suction short pipe 9 are installed with the plug 10.

[0056] Further, the air valve comprises a piston valve 26, the piston shaft 25 is arranged in the piston valve 26, the piston valve sealing gasket 27 is further arranged on one side of the piston valve 26, and the piston valve sealing gasket 27 and the piston valve 26 are cross-installed in the valve shell 14.

[0057] The air valve further comprises a second valve cover 22, the second valve cover bushing 24 is arranged in the second valve cover 22, the valve cover gasket 23 is arranged in the second valve cover bushing 24, the stability during installation is ensured through the additional valve cover gasket, and then the part is connected with the installed valve shell 14 through the bolt to complete the installation.

[0058] Further, the discharge suction short pipe 9 is arranged on one side of the second valve cover 22.

[0059] Further, the first valve cover 16 which is symmetrical with the second valve cover 22 is arranged with a sealing assembly, and the sealing assembly comprises the first valve cover bushing 17 arranged in the first valve cover 16, the T-shaped plug groove 18 is arranged in the first valve cover bushing 17, and the T-shaped plug sealing gasket 19 which is used in cooperation with the T-shaped plug groove 18 is arranged in the T-shaped plug groove 18.

[0060] Further, the air valve further comprises the valve cover partition plate 20 on one side of the first valve cover 16, the valve cover partition plate 20 is internally provided with a partition plate bushing 21, and the valve cover partition plate 20 is integrally connected with the valve shell 14 provided with the second valve cover and the first valve cover 16 through bolts, and is mounted together, thereby completing the installation part of the air valve.

[0061] Further, the ball and the ball seat are made of special corrosion-resistant Teflon material (such as PVDF, FEP) or stainless steel material, preferably Teflon material,

[0062] The high-pressure diaphragm pump is made of corrosion-resistant stainless steel material.

[0063] The air chamber is connected with the air valve through the air path pipe group to form a unique air path design, so that kinetic energy from the air inlet can be converted into mechanical energy of the shaft to the greatest extent, and the pressure energy of air and medium in the chamber can be converted, so that the self-suction capacity of -0.07MPa can be realized.

[0064] In use, the piston shaft in the air valve reciprocates under the action of compressed air and space change, and the diaphragm reciprocates due to the change of space, forming two cavities in the diaphragm, pump shell and side cover, one side being an air chamber and the other side being a medium chamber, so that the medium is pressed out by the change of space to realize medium conveying.

[0065] The high-pressure diaphragm pump is made of corrosion-resistant stainless steel material, and the ball and the ball seat are made of special corrosion-resistant Teflon material (such as PVDF, FEP) or stainless steel material, preferably Teflon material, so that the physical and chemical properties of methanol conveying can be met, methanol corrosion can be resisted, and the service life of the pump is greatly improved.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limiting. Although the utility model is described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the utility model, and they should be covered in the scope of the claims of the utility model.

Claims

1. A stable output high pressure diaphragm pump characterized in that, It comprises: a pump shell, two sets of symmetrical air chambers and medium chambers arranged in the pump shell and connected by a shaft to form a whole, a partition plate arranged on the side of the pump shell, an air valve connected to the air chambers through an air path pipe group and arranged on the side of the pump shell opposite to the partition plate, a main shaft bushing arranged in the pump shell, the main shaft passing through the main shaft bushing and sequentially having a main shaft sleeve, an inner pressure plate, a diaphragm and an outer pressure plate arranged at both ends of the main shaft, and a side cover connected to the outer pressure plate.

2. The high-pressure diaphragm pump with stable output according to claim 1, wherein the air path pipe group comprises two sets of filter cartridges, balls and ball seats, and further comprises a discharge suction short pipe, and the filter cartridges, balls and ball seats sequentially arranged at the inlet of the high-pressure diaphragm pump are arranged at the inlet end of the discharge suction short pipe.

3. The high-pressure diaphragm pump with stable output according to claim 2, wherein the ball seat, ball and filter cartridge sequentially arranged at the outlet of the high-pressure diaphragm pump are arranged at the outlet end of the discharge suction short pipe.

4. The high-pressure diaphragm pump with stable output according to claim 2, wherein the discharge suction short pipe is arranged on the side of the second valve cover of the air valve, the discharge suction short pipe is bolted to the base, and threaded plugs are arranged at both ends of the discharge suction short pipe.

5. The high-pressure diaphragm pump with stable output according to claim 1, wherein the air valve comprises a piston valve, the air valve further comprises a valve shell, a piston shaft is arranged in the piston valve, and a piston valve sealing gasket is arranged on one side of the piston valve.

6. The high-pressure diaphragm pump with stable output according to claim 5, wherein the piston valve sealing gasket and the piston valve are cross-arranged in the valve shell, the air valve further comprises a second valve cover, a second valve cover bushing is arranged in the second valve cover, a valve cover gasket is arranged in the second valve cover bushing, and a sealing assembly is arranged in the first valve cover symmetrically arranged with the second valve cover.

8. The high-pressure diaphragm pump with stable output according to claim 7, wherein the sealing assembly comprises a first valve cover bushing arranged in the first valve cover, a T-shaped plug groove is arranged in the first valve cover bushing, and a T-shaped plug sealing gasket is arranged in the T-shaped plug groove for sealing connection.

9. The high-pressure diaphragm pump with stable output according to claim 7, wherein the air valve further comprises a valve cover partition plate arranged on one side of the first valve cover, and a partition plate bushing is arranged in the valve cover partition plate, the ball and ball seat are made of Teflon material, and the high-pressure diaphragm pump is made of stainless steel. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 7. A stable output high pressure diaphragm pump as claimed in claim 1 wherein, ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 10. A stable output high pressure diaphragm pump as claimed in claim 2 wherein, ​ ​

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