Integrated diaphragm limiting plate structure

Abstract

The utility model relates to the technical field of diaphragm pumps, in particular to an integrated diaphragm limiting plate structure which comprises a pump head and a cylinder body which are used for arrangement, a diaphragm is arranged between the pump head and the cylinder body in a clamped mode, a cavity between the pump head and the diaphragm is divided into a medium cavity and a hydraulic cavity through the diaphragm, and the diaphragm is arranged in an alarm ring. A connecting mechanism is arranged on the outer side of the alarm ring, the connecting mechanism comprises an annular groove formed in the outer side of the alarm ring, a clamping block is rotationally connected to the interior of the annular groove, connecting rods are fixedly connected to the two sides of the clamping block, and the connecting rods are inserted into the sliding grooves and fixedly connected with limiting plates. The pump head and the cylinder body can be rapidly and stably connected through the alarm ring, the diaphragm can be installed between the pump head and the cylinder body, the diaphragm can be conveniently and rapidly replaced, the alarm can be rapidly installed, and the assembling and replacing efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm pumps, in particular to an integrated diaphragm limiting plate structure. Background Art

[0002] Whether it is a metering pump or a reciprocating pump, the main feature of the hydraulic diaphragm pump is that it has no leakage. During the material conveying process, there is absolutely no leakage of materials, which is determined by its medium cavity structure. The diaphragm completely separates the medium cavity from the hydraulic cavity. During normal operation, the diaphragm will not rupture abnormally, and the medium will not leak. Especially for the conveying conditions of toxic, corrosive, flammable and explosive media, or precious materials, no leakage is allowed. The hydraulic diaphragm pump is the first choice. Due to this feature, hydraulic diaphragm pumps are widely used in various industries such as petroleum, chemical industry, water supply, thermal power, nuclear industry, pharmaceuticals, and food.

[0003] Because the diaphragm of a traditional hydraulic diaphragm pump is made of flexible material, it is difficult to accurately position it when installed between the pump head and the cylinder body, and it is easy to tilt, which affects the use effect of the diaphragm. In addition, traditional hydraulic diaphragm pumps all contain an R-plate, whose arc-shaped R cavity and the pump head R cavity together form an area to control the front and rear displacement limits of the diaphragm and protect the diaphragm from being damaged. The use of the R-plate not only increases the risk of material leakage, but also easily blocks the cylinder body from contacting the hydraulic oil. Setting sensor equipment on a separate R-plate affects disassembly and is inconvenient for stable line layout.

[0004] To this end, an integrated diaphragm limiting plate structure is proposed. Utility Model Content

[0005] The utility model aims to provide an integrated diaphragm limiting plate structure to solve the problems of inconvenience in diaphragm installation and inconvenience in arranging circuits of equipment on the R plate mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an integrated diaphragm limiting plate structure, including a pump head and a cylinder body for setting, a diaphragm is sandwiched between the pump head and the cylinder body, the diaphragm divides the chamber between the pump head and the cylinder body into a medium chamber and a hydraulic chamber, the diaphragm is arranged inside the alarm ring, and a connecting mechanism is arranged on the outside of the alarm ring, the connecting mechanism includes an annular groove opened on the outside of the alarm ring, a clamping block is rotatably connected inside the annular groove, connecting rods are fixedly connected on both sides of the clamping block, the connecting rods are inserted in the slide groove and fixedly connected to the limiting plate, storage grooves are opened on both sides of the alarm ring, and threaded grooves are opened on the opposite sides of the pump head and the cylinder body.

[0007] Preferably, the inner wall of the medium chamber arranged on the pump head and the inner wall of the hydraulic chamber arranged on the cylinder body are both arranged in an arc shape, and the alarm ring is clamped between the pump head and the cylinder body.

[0008] Preferably, the clamping block is rotatably connected to the alarm ring via a connecting rod, and the clamping block is arranged in a hexagonal column.

[0009] Preferably, the limiting plate and the sliding groove are both arranged in a polygonal shape, and the limiting plate and the sliding groove are adapted to each other.

[0010] Preferably, the inner diameter of the storage groove is equal to the outer diameter of the threaded barrel, the outer diameter of the threaded barrel is equal to the inner diameter of the thread groove, and the outer side of the threaded barrel is provided with an external thread that matches the internal thread of the thread groove.

[0011] Preferably, an alarm is provided at the bottom end of the alarm ring, and the alarm is connected to the interior of the diaphragm through a conveying channel.

[0012] Preferably, a control mechanism is provided on the cylinder body, and the control mechanism includes a pressure sensor arranged on the inner wall of the hydraulic chamber, and the pressure sensor is electrically connected to the pressure relief valve group and the compensation valve group.

[0013] Preferably, a pressure relief valve group is provided at the upper end of the cylinder body, a compensation valve group is provided at the bottom end of the cylinder body, a limit valve group is provided on the inner wall of the hydraulic cavity, and an oil inlet channel is provided between the limit valve group and the compensation valve group.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model is advantageous for quickly and stably connecting the pump head and the cylinder body through the alarm ring by designing the connection mechanism, so that the diaphragm can be installed between the pump head and the cylinder body, which is convenient for quickly replacing the diaphragm and quickly installing the alarm, greatly improving the efficiency of assembly and replacement.

[0016] 2. The utility model is advantageous in that the separate R plate is removed through the design of the control mechanism, and the R plate and the cylinder body are made into an integrated structure. The inner wall of the hydraulic chamber opened on the left side of the cylinder body also protects the diaphragm from being damaged, thereby reducing one part and one leakage point, which is more conducive to the reliable operation of the pump. In addition, by removing the R plate, the pressure sensor can be directly arranged inside the cylinder body to electrically connect the wires of the pressure relief valve group and the compensation valve group, without the need to set up dragging wires on the outside, thereby optimizing the processing technology, saving processing costs, and bringing great economic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic overall cross-sectional view of an integrated diaphragm limiting plate structure according to an embodiment of the utility model;

[0019] Figure 2 The utility model is an integrated diaphragm limiting plate structure Figure 1 A schematic diagram of the structure enlargement in the middle;

[0020] Figure 3 It is a partial three-dimensional schematic diagram of an integrated diaphragm limiting plate structure according to an embodiment of the utility model;

[0021] Figure 4 The utility model is an integrated diaphragm limiting plate structure Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0022] The markings in the figure are: 1. Pump head; 2. Cylinder body; 3. Alarm ring; 4. Diaphragm; 5. Medium chamber; 6. Hydraulic chamber; 7. Annular groove; 8. Clamping block; 9. Connecting rod; 10. Storage tank; 11. Limiting plate; 12. Slide groove; 13. Threaded barrel; 14. Threaded groove; 15. Alarm; 16. Pressure sensor; 17. Pressure relief valve group; 18. Limit valve group; 19. Compensation valve group. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] like Figures 1 to 4As shown, a specific embodiment of the utility model provides an integrated diaphragm limiting plate structure, including a pump head 1 and a cylinder body 2 for setting, a diaphragm 4 is sandwiched between the pump head 1 and the cylinder body 2, the diaphragm 4 divides the chamber between the pump head 1 and the cylinder body 2 into a medium chamber 5 and a hydraulic chamber 6, the diaphragm 4 is arranged inside the alarm ring 3, and a connecting mechanism is arranged on the outside of the alarm ring 3, the connecting mechanism includes an annular groove 7 opened on the outside of the alarm ring 3, a clamping block 8 is rotatably connected inside the annular groove 7, connecting rods 9 are fixedly connected on both sides of the clamping block 8, the connecting rods 9 are inserted in the slide grooves 12 and are fixedly connected to the limiting plates 11, storage grooves 10 are opened on both sides of the alarm ring 3, and threaded grooves 14 are opened on the opposite sides of the pump head 1 and the cylinder body 2.

[0026] Specifically, Figure 2 and Figure 4 As shown, the inner wall of the medium chamber 5 arranged on the pump head 1 and the inner wall of the hydraulic chamber 6 arranged on the cylinder body 2 are both arranged in an arc shape, the alarm ring 3 is clamped between the pump head 1 and the cylinder body 2, the clamping block 8 is rotatably connected with the alarm ring 3 through the connecting rod 9, the clamping block 8 is arranged in a hexagonal column, the limiting plate 11 and the slide groove 12 are both arranged in a polygonal shape, the limiting plate 11 and the slide groove 12 are adapted to each other, the inner diameter of the storage tank 10 is equal to the outer diameter of the threaded barrel 13, the outer diameter of the threaded barrel 13 is equal to the inner diameter of the threaded groove 14, the outer side of the threaded barrel 13 is arranged with an external thread adapted to the internal thread of the threaded groove 14, the bottom end of the alarm ring 3 is arranged with an alarm 15, the alarm 15 is connected with the inside of the diaphragm 4 through the conveying channel, when in use, the clamping block 8 is clamped with an external wrench for rotation, the clamping block 8 drives the limiting plate 11 to rotate through the connecting rod 9, and then because of the limiting The limiting plate 11 and the slide groove 12 are both polygonal, and the limiting plate 11 can slide in the slide groove 12, so the clamping block 8 can drive the threaded barrel 13 to rotate, and will not hinder the telescopic movement of the threaded barrel 13. Finally, because the external thread of the threaded barrel 13 is compatible with the internal thread of the thread groove 14, the clamping block 8 drives the threaded barrel 13 in the storage tank 10 to enter the thread groove 14, and when the diaphragm 4 is damaged, the liquid in the medium chamber 5 and the hydraulic chamber 6 is transported to the alarm 15 through the inside of the diaphragm 4, and the alarm 15 sounds an alarm, which is conducive to quickly and stably connecting the pump head 1 and the cylinder body 2 through the alarm ring 3, so that the diaphragm 4 can be installed between the pump head 1 and the cylinder body 2, which is convenient for quickly replacing the diaphragm 4, and the alarm 15 can be quickly installed, which greatly improves the efficiency of assembly and replacement.

[0027] Specifically, Figure 1As shown, a control mechanism is arranged on the cylinder body 2, and the control mechanism includes a pressure sensor 16 arranged on the inner wall of the hydraulic chamber 6, and the pressure sensor 16 is electrically connected to a pressure relief valve group 17 and a compensation valve group 19. The upper end of the cylinder body 2 is provided with a pressure relief valve group 17, and the bottom end of the cylinder body 2 is provided with a compensation valve group 19. A limit valve group 18 is arranged on the inner wall of the hydraulic chamber 6, and an oil inlet channel is arranged between the limit valve group 18 and the compensation valve group 19. The power end of the cylinder body 2 controls the hydraulic oil in the hydraulic chamber 6 to push the diaphragm 4 to swing back and forth, and the arc inner wall on the right side of the pump head 1 and the left side of the cylinder body 2 blocks and protects the displacement of the diaphragm 4, so that the limit valve group 18 controls the oil replenishment amount of the compensation valve group 19, and then When the pressure sensor 16 senses a pressure change, the pressure sensor 16 controls the opening and closing of the pressure relief valve group 17 and the compensation valve group 19 through a converter, which is beneficial to making the R plate and the cylinder body 2 into an integrated structure by removing a separate R plate. The inner wall of the hydraulic chamber 6 opened on the left side of the cylinder body 2 also protects the diaphragm 4 from being damaged, reducing one part and one leakage point, which is more conducive to the reliable operation of the pump. By removing the R plate, the pressure sensor 16 can be directly arranged inside the cylinder body 2 to electrically connect the wires of the pressure relief valve group 17 and the compensation valve group 19, without the need to set up dragging wires on the outside, thereby optimizing the processing technology, saving processing costs, and bringing great economic value.

[0028] Working principle: When in use, use an external wrench to clamp the clamping block 8 and rotate it. The clamping block 8 drives the limiting plate 11 to rotate through the connecting rod 9. Then, because the limiting plate 11 and the slide groove 12 are both polygonal, the limiting plate 11 can slide in the slide groove 12, so the clamping block 8 can drive the threaded barrel 13 to rotate, and will not hinder the telescopic movement of the threaded barrel 13. Finally, because the external thread of the threaded barrel 13 is compatible with the internal thread of the thread groove 14, the clamping block 8 drives the threaded barrel 13 in the storage tank 10 to enter the thread groove 14;

[0029] The power end of the cylinder body 2 controls the hydraulic oil in the hydraulic chamber 6 to push the diaphragm 4 to swing back and forth, so that the arc inner wall on the right side of the pump head 1 and the left side of the cylinder body 2 blocks and protects the displacement of the diaphragm 4, so that the limit valve group 18 controls the oil replenishment amount of the compensation valve group 19, and then when the pressure sensor 16 senses the pressure change, the pressure sensor 16 controls the opening and closing of the pressure relief valve group 17 and the compensation valve group 19 through the converter.

[0030] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0031] The utility model is intended to cover all such substitutions, modifications and changes that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An integrated diaphragm limiting plate structure, comprising a pump head (1) and a cylinder body (2) for arrangement, a diaphragm (4) being sandwiched between the pump head (1) and the cylinder body (2), the diaphragm (4) dividing a chamber between the pump head (1) and the cylinder body (2) into a medium chamber (5) and a hydraulic chamber (6), the diaphragm (4) being arranged inside an alarm ring (3), and a connecting mechanism being arranged outside the alarm ring (3), characterized in that: The connection mechanism comprises an annular groove (7) formed on the outside of the alarm ring (3), a clamping block (8) being rotatably connected inside the annular groove (7), connecting rods (9) being fixedly connected on both sides of the clamping block (8), the connecting rods (9) being inserted into the slide groove (12) and fixedly connected to the limiting plate (11), storage grooves (10) being formed on both sides of the alarm ring (3), and threaded grooves (14) being formed on opposite sides of the pump head (1) and the cylinder body (2).

2. The integrated diaphragm limiting plate structure according to claim 1, characterized in that: The inner wall of the medium chamber (5) arranged on the pump head (1) and the inner wall of the hydraulic chamber (6) arranged on the cylinder body (2) are both arranged in an arc shape, and the alarm ring (3) is clamped between the pump head (1) and the cylinder body (2).

3. The integrated diaphragm limiting plate structure according to claim 1, characterized in that: The clamping block (8) is rotatably connected to the alarm ring (3) via a connecting rod (9), and the clamping block (8) is arranged in the form of a hexagonal column.

4. The integrated diaphragm limiting plate structure according to claim 1, characterized in that: The limiting plate (11) and the sliding groove (12) are both arranged in a polygonal shape, and the limiting plate (11) and the sliding groove (12) are adapted to each other.

5. The integrated diaphragm limiting plate structure according to claim 1, characterized in that: The inner diameter of the storage groove (10) is equal to the outer diameter of the threaded barrel (13), the outer diameter of the threaded barrel (13) is equal to the inner diameter of the threaded groove (14), and the outer side of the threaded barrel (13) is provided with an external thread that matches the internal thread of the threaded groove (14).

6. The integrated diaphragm limiting plate structure according to claim 1, characterized in that: An alarm (15) is provided at the bottom end of the alarm ring (3), and the alarm (15) is connected to the interior of the diaphragm (4) through a conveying channel.

7. The integrated diaphragm limiting plate structure according to claim 1, characterized in that: The cylinder body (2) is provided with a control mechanism, the control mechanism comprising a pressure sensor (16) arranged on the inner wall of the hydraulic chamber (6), the pressure sensor (16) being electrically connected to a pressure relief valve group (17) and a compensation valve group (19).

8. The integrated diaphragm limiting plate structure according to claim 7, characterized in that: A pressure relief valve group (17) is provided at the upper end of the cylinder body (2), a compensation valve group (19) is provided at the lower end of the cylinder body (2), a limit valve group (18) is provided on the inner wall of the hydraulic chamber (6), and an oil inlet channel is provided between the limit valve group (18) and the compensation valve group (19).

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