One-way valve for self-cleaning diaphragm pump

Abstract

The utility model provides a one-way valve for a self-cleaning diaphragm pump. The one-way valve for the self-cleaning diaphragm pump is arranged at two input ends and two output ends of the diaphragm pump. In the working process, the normal flowing direction of fluid is as follows: the fluid enters from the input end of the input pipe and is discharged from the output end of the output pipe through the output pipe. In the process, the fluid ejects the sealing ball away from the clamping ring, and the fluid is discharged through a gap between the sealing ball and the inner wall of the output pipe. When the diaphragm pump needs to be cleaned in the reverse direction, the output end of an external solvent pipe inputs a solvent towards the output end of an output pipe, a driving air cylinder drives an inserting rod to move close to the bottom of a sealing ball through a driving block, the sealing ball is jacked open from a clamping ring, and therefore the input pipe is controlled to be opened; therefore, the solvent can flow back through a gap between the sealing ball and the inner wall of the output pipe. And the diaphragm pump is subjected to reverse cleaning. The one-way valve for the self-cleaning diaphragm pump facilitates reverse cleaning of the diaphragm pump.

Description

Technical Field

[0001] The utility model relates to the field of one-way valves, in particular to a one-way valve used for a self-cleaning diaphragm 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 left side of the diaphragm that contacts the liquid is made of corrosion-resistant materials or coated with a layer of corrosion-resistant substances; the right side of the diaphragm is filled with water or oil. The diaphragm pump, also known as the control pump, is the main type of actuator. It changes the fluid flow rate by receiving the control signal output by the regulating control unit and using power operation. The role of the diaphragm pump in the control process is to receive the control signal of the regulator or computer, change the flow rate of the regulated medium, and maintain the regulated parameters within the required range, thereby achieving automation of the production process. The diaphragm pump is a more special form of positive displacement pump. It relies on the back and forth agitation of a diaphragm to change the volume of the studio to inhale and discharge liquid.

[0003] However, the pneumatic diaphragm pump is mainly composed of two parts: the transmission part and the diaphragm cylinder head. The transmission part is a driving mechanism that drives the diaphragm to move back and forth. Its transmission forms include mechanical transmission, hydraulic transmission, and pneumatic transmission. Traditional diaphragm pumps, such as the patent application number CN201610536517.1, the invention name of the double diaphragm pump, usually have a one-way valve at the output and input ends of the diaphragm pump to control the flow direction of the fluid. However, the traditional one-way valve cannot change the flow direction, which is not conducive to the reverse cleaning of the diaphragm pump. Utility Model Content

[0004] Based on this, it is necessary to provide a one-way valve for a self-cleaning diaphragm pump to address the technical problem that the traditional one-way valve cannot change the flow direction and is not conducive to the reverse cleaning of the diaphragm pump.

[0005] A one-way valve for a self-cleaning diaphragm pump, the one-way valve for the self-cleaning diaphragm pump comprising: an input pipe, an output pipe, a receiving block and an opening and closing mechanism;

[0006] The output end of the input tube is connected to the input end of the output tube, and the output end of the input tube is communicated with the input end of the output tube; a clamping ring is provided at the output end of the input tube; the clamping ring is inserted into the input end of the output tube; a plurality of clamping blocks are provided at the output end of the output tube, and an arc-shaped receiving surface is provided at the bottom of the clamping blocks; an inserting hole is provided on the side wall of the input end of the output tube;

[0007] The receiving block is provided with a fixing hole, the input pipe and the output pipe are both adapted to the receiving block, the output end of the input pipe and the output pipe are both inserted into the fixing hole and connected to the receiving block; the receiving block is provided with a receiving cavity, and a through hole is provided on the side wall of the receiving cavity;

[0008] The opening and closing mechanism includes a sealing ball, a driving cylinder, a driving block and an insertion rod. The sealing ball is adapted to the positioning ring, and the sealing ball is received in the output tube; the sealing ball is received on the positioning ring to block the output end of the input tube; the driving cylinder is adapted to the receiving cavity, the driving cylinder is received in the receiving cavity and connected to the receiving block, the driving cylinder is connected to the insertion rod through the driving block, and the end of the insertion rod away from the driving block is a conical driving head; the through hole and the insertion hole are connected to the insertion The plug-in rod is adapted to the plug-in rod, the plug-in rod passes through the through hole and is inserted into the plug-in hole and is slidably connected to the receiving block; the driving cylinder drives the plug-in rod to move close to or away from the bottom of the sealing ball through the driving block, and the plug-in rod moves close to the sealing ball to push the sealing ball away from the locking ring to control the opening of the input pipe; the arc-shaped receiving surface is adapted to the sealing ball, and the sealing ball can abut against each of the arc-shaped receiving surfaces; each of the locking blocks is used to limit the position of the sealing ball to prevent the sealing ball from falling out of the output pipe.

[0009] In one embodiment, the input tube and the output tube are integrally formed.

[0010] In one embodiment, the retaining ring and the input tube are integrally formed.

[0011] In one embodiment, the insertion rod and the driving block are integrally formed.

[0012] In one embodiment, the conical drive head and the insertion rod are integrally formed.

[0013] In one embodiment, the insertion rod is a cylindrical structure.

[0014] In one embodiment, the driving block is a cylindrical structure.

[0015] In one embodiment, the receiving block is a rectangular parallelepiped structure.

[0016] In one embodiment, each of the blocking blocks is integrally formed with the output tube.

[0017] In one embodiment, each of the positioning blocks is evenly arranged on the inner wall of the output end of the output tube.

[0018] The one-way valve for the self-cleaning diaphragm pump is used to be placed at the two input ends and two output ends of the diaphragm pump. During operation, the normal flow direction of the fluid is: entering from the input end of the input pipe and being discharged from the output end of the output pipe through the output pipe. In this process, the fluid pushes the sealing ball off the retaining ring, and the fluid is discharged through the gap between the sealing ball and the inner wall of the output pipe. When the diaphragm pump needs to be cleaned in the reverse direction, the output end of the external solvent tube inputs the solvent toward the output end of the output pipe, and the driving cylinder drives the inserted rod to move close to the bottom of the sealing ball through the driving block, pushing the sealing ball off the retaining ring to control the opening of the input pipe, so that the solvent can flow back through the gap between the sealing ball and the inner wall of the output pipe. The diaphragm pump is reversely cleaned. The one-way valve for the self-cleaning diaphragm pump is exquisitely designed, low-cost, and can change the flow direction, which is conducive to the reverse cleaning of the diaphragm pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of an application scenario of a one-way valve for a self-cleaning diaphragm pump in one embodiment;

[0020] Figure 2 It is a structural schematic diagram of a one-way valve for a self-cleaning diaphragm pump in one embodiment;

[0021] Figure 3 for Figure 2 A schematic structural diagram of a one-way valve for a self-cleaning diaphragm pump from another perspective in an embodiment;

[0022] Figure 4 for Figure 2 A schematic structural diagram of a one-way valve for a self-cleaning diaphragm pump from another perspective in an embodiment;

[0023] Figure 5 It is a partial structural schematic diagram of a one-way valve used for a self-cleaning diaphragm pump in one embodiment;

[0024] Figure 6 It is a partial structural schematic diagram of a one-way valve used for a self-cleaning diaphragm pump in one embodiment;

[0025] Figure 7 for Figure 6 A schematic structural diagram of another perspective of a one-way valve for a self-cleaning diaphragm pump in some embodiments. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth so as to fully understand the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below. In the description of the utility model, it is necessary to understand that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or position relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0031] Please also read Figures 1 to 7 The utility model provides a one-way valve 10 for a self-cleaning diaphragm pump. The one-way valve 10 for a self-cleaning diaphragm pump includes: an input pipe 100, an output pipe 200, a receiving block 300 and an opening and closing mechanism 400.

[0032] The output end of the input tube 100 is connected to the input end of the output tube 200. In this embodiment, the input tube 100 and the output tube 200 are integrally formed. The output end of the input tube 100 is connected to the input end of the output tube 200. A clamping ring 110 is provided at the output end of the input tube 100. In this embodiment, the clamping ring 110 and the input tube 100 are integrally formed. The clamping ring 110 is inserted at the input end of the output tube 200. A plurality of clamping blocks 210 are provided at the output end of the output tube 200, and the bottoms of the clamping blocks 210 are all provided with arc-shaped receiving surfaces. An insertion hole 201 is provided on the side wall of the input end of the output tube 200.

[0033] The receiving block 300 is provided with a fixing hole 301, the input pipe 100 and the output pipe 200 are both adapted to the receiving block 300, and the output end of the input pipe 100 and the output pipe 200 are both inserted into the fixing hole 301 and connected to the receiving block 300. In this embodiment, the receiving block 300 is a rectangular parallelepiped structure. The receiving block 300 is provided with a receiving cavity (not shown), and a through hole (not shown) is provided on the side wall of the receiving cavity.

[0034] The opening and closing mechanism 400 includes a sealing ball 410, a driving cylinder 420, a driving block 430 and an insertion rod 440. The sealing ball 410 is adapted to the positioning ring 110, and the sealing ball 410 is accommodated in the output pipe 200. The sealing ball 410 is received on the positioning ring 110 to block the output end of the input pipe 100. The driving cylinder 420 is adapted to the receiving chamber, and the driving cylinder 420 is received in the receiving chamber and connected to the receiving block 300. The driving cylinder 420 is driven and connected to the insertion rod 440 through the driving block 430. In this embodiment, the insertion rod 440 and the driving block 430 are integrally formed. The end of the insertion rod 440 away from the driving block 430 is a conical driving head 441. The conical driving head 441 and the insertion rod 440 are integrally formed. In this embodiment, the insertion rod 440 is a cylindrical structure. The perforation and the insertion hole 201 are both adapted to the insertion rod 440, and the insertion rod 440 passes through the perforation and is inserted into the insertion hole 201 and is slidably connected to the receiving block 300. The driving cylinder 420 drives the insertion rod 440 to move close to or away from the bottom of the sealing ball 410 through the driving block 430, and the insertion rod 440 moves close to the sealing ball 410 to push the sealing ball 410 off the positioning ring 110 to control the opening of the input pipe 100. In the present embodiment, the driving block 430 is a cylindrical structure. The arc-shaped receiving surface is adapted to the sealing ball 410, and the sealing ball 410 can abut against each arc-shaped receiving surface. Each positioning block 210 is used to limit the position of the sealing ball 410 to prevent the sealing ball 410 from falling out of the output pipe 200. In the present embodiment, each positioning block 210 is integrally formed with the output pipe 200. Specifically, each of the blocking blocks 210 is evenly arranged on the inner wall of the output end of the output tube 200 .

[0035] The one-way valve 10 for the self-cleaning diaphragm pump is used to be placed at the two input ends and the two output ends of the diaphragm pump 500. During operation, the normal flow direction of the fluid is: entering from the input end of the input pipe 100, passing through the output pipe 200 and being discharged from the output end of the output pipe 200. In this process, the fluid pushes the sealing ball 410 away from the clamping ring 110, and the fluid is discharged through the gap between the sealing ball 410 and the inner wall of the output pipe 200. When the diaphragm pump 500 needs to be cleaned in the reverse direction, the output end of the external solvent tube inputs the solvent toward the output end of the output pipe 200, and the driving cylinder 420 drives the insertion rod 440 to move close to the bottom of the sealing ball 410 through the driving block 430, and pushes the sealing ball 410 away from the clamping ring 110 to control the input pipe 100 to open, so that the solvent can flow back through the gap between the sealing ball 410 and the inner wall of the output pipe 200. The diaphragm pump 500 is cleaned in the reverse direction. The one-way valve 10 for the self-cleaning diaphragm pump is ingeniously designed, low-cost, and can change the flow direction, thereby facilitating reverse cleaning of the diaphragm pump 500.

[0036] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A one-way valve for a self-cleaning diaphragm pump, characterized in that: include: Input pipe, output pipe, receiving block and opening and closing mechanism; The output end of the input tube is connected to the input end of the output tube, and the output end of the input tube is communicated with the input end of the output tube; a clamping ring is provided at the output end of the input tube; the clamping ring is inserted into the input end of the output tube; a plurality of clamping blocks are provided at the output end of the output tube, and an arc-shaped receiving surface is provided at the bottom of the clamping blocks; an inserting hole is provided on the side wall of the input end of the output tube; The receiving block is provided with a fixing hole, the input pipe and the output pipe are both adapted to the receiving block, the output end of the input pipe and the output pipe are both inserted into the fixing hole and connected to the receiving block; the receiving block is provided with a receiving cavity, and a through hole is provided on the side wall of the receiving cavity; The opening and closing mechanism includes a sealing ball, a driving cylinder, a driving block and an insertion rod. The sealing ball is adapted to the positioning ring, and the sealing ball is received in the output tube; the sealing ball is received on the positioning ring to block the output end of the input tube; the driving cylinder is adapted to the receiving cavity, the driving cylinder is received in the receiving cavity and connected to the receiving block, the driving cylinder is connected to the insertion rod through the driving block, and the end of the insertion rod away from the driving block is a conical driving head; the through hole and the insertion hole are connected to the insertion The plug-in rod is adapted to the plug-in rod, the plug-in rod passes through the through hole and is inserted into the plug-in hole and is slidably connected to the receiving block; the driving cylinder drives the plug-in rod to move close to or away from the bottom of the sealing ball through the driving block, and the plug-in rod moves close to the sealing ball to push the sealing ball away from the locking ring to control the opening of the input pipe; the arc-shaped receiving surface is adapted to the sealing ball, and the sealing ball can abut against each of the arc-shaped receiving surfaces; each of the locking blocks is used to limit the position of the sealing ball to prevent the sealing ball from falling out of the output pipe.

2. The one-way valve for a self-cleaning diaphragm pump according to claim 1, characterized in that: The input pipe and the output pipe are integrally formed.

3. The one-way valve for a self-cleaning diaphragm pump according to claim 1, characterized in that: The positioning ring and the input pipe are integrally formed.

4. The one-way valve for a self-cleaning diaphragm pump according to claim 1, characterized in that: The insertion rod and the driving block are integrally formed.

5. The one-way valve for a self-cleaning diaphragm pump according to claim 1, characterized in that: The conical driving head and the insertion rod are integrally formed.

6. The one-way valve for a self-cleaning diaphragm pump according to claim 1, characterized in that: The insertion rod is a cylindrical structure.

7. The one-way valve for a self-cleaning diaphragm pump according to claim 1, characterized in that: The driving block is a cylindrical structure.

8. The one-way valve for a self-cleaning diaphragm pump according to claim 1, characterized in that: The receiving block is a rectangular parallelepiped structure.

9. The one-way valve for a self-cleaning diaphragm pump according to claim 1, characterized in that: Each of the positioning blocks is integrally formed with the output tube.

10. The one-way valve for a self-cleaning diaphragm pump according to claim 1, characterized in that: The positioning blocks are evenly arranged on the inner wall of the output end of the output tube.

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