Diaphragm pump cover and valve plate internal auxiliary structure

Abstract

The utility model provides a diaphragm pump pump cover and valve plate inside auxiliary structure relates to diaphragm pump technical field, including diaphragm pump body, the upside of diaphragm pump body is provided with auxiliary assembly, the auxiliary assembly includes the valve plate of installation in diaphragm pump body upside, the middle of valve plate is penetrated with spring support, the upside of spring support is provided with polytetrafluoroethylene gasket, the upside of polytetrafluoroethylene gasket is provided with spring, the upside of spring is provided with valve piece, the upside of valve piece is installed with valve seat, spring and valve piece and valve seat can produce a certain degree of abrasion, at this moment can be a piece of polytetrafluoroethylene gasket pad into spring support, thereby the spring is upturned, and the valve piece is supported with valve seat again, and the valve piece is adhered together with valve seat, makes it restore initial sealing performance, prolongs the life, reduces the maintenance replacement cost, and the magnetic particle in polytetrafluoroethylene gasket can adsorb the tiny metal impurity in oil.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm pump technology, and in particular to an internal auxiliary structure of the pump cover and valve plate of a diaphragm pump. Background Technology

[0002] The pump cover of a diaphragm pump is a shell that encloses the pump body and protects the internal components. It serves both to fix and seal the pump, preventing media leakage. The valve plate is a key component that controls the flow direction of the media. It has valve holes that cooperate with valves to achieve unidirectional media delivery. Both of these components are important for ensuring the normal operation of the pump body.

[0003] A search revealed that the publication number "CN218207018U" mentions that this utility model relates to a diaphragm pump. The diaphragm pump includes: a housing; a first housing cover and a second housing cover, each including at least one air inlet and at least one air outlet. The first housing cover and the second housing cover are connected by a connecting pipe. At least one of the first housing cover and the second housing cover includes at least one through hole, at least one inner plug, and at least one outer plug. The at least one air inlet, the connecting pipe, one of the at least one through hole, and one of the at least one air outlet are connected to each other in a carrier-air manner.

[0004] However, currently, diaphragm pump valve plates mainly rely on the back spring and valve seat for compression sealing. However, in actual operation, due to the scouring and frictional characteristics of the fluid medium, the valve plates and valve seats will be continuously worn. When the wear reaches more than 1 mm, the sealing between the valve plates and valve seats will be significantly weakened, which will lead to the diaphragm pump failing to operate normally. Furthermore, during the operation of the diaphragm pump, a certain amount of trace impurities will be mixed in the oil flowing inside. If these trace impurities are not filtered in time, they can easily accumulate inside the diaphragm pump, causing damage. In addition, the vibration generated during the operation of the diaphragm pump can easily cause internal parts to displace, resulting in damage.

[0005] Therefore, we provide an auxiliary structure inside the diaphragm pump cover and valve plate to solve the above problems. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides an internal auxiliary structure for the diaphragm pump cover and valve plate.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An internal auxiliary structure for a diaphragm pump cover and valve plate includes a diaphragm pump body. A drain port is located at the center of the upper side of the diaphragm pump body. Limiting bolts are provided on the surface of each drain port. An oil filter screen is located inside the drain port, and an impact ball is located inside the oil filter screen. An auxiliary assembly is located on the upper side of the diaphragm pump body. The auxiliary assembly includes a valve plate mounted on the upper side of the diaphragm pump body. A spring bracket passes through the center of the valve plate. A polytetrafluoroethylene (PTFE) gasket is located on the upper side of the spring bracket. A spring is located on the upper side of the PTFE gasket. A valve plate is located on the upper side of the spring. A valve seat is mounted on the upper side of the valve plate. An outer O-ring is located above the valve seat. An anti-vibration pad is mounted on the upper side of the outer O-ring. A sealing O-ring is located on the upper side of the anti-vibration pad. A pump cover is mounted on the upper right side of the pump cover. An outlet is located on the left side of the inlet.

[0009] As a further description of the above technical solution:

[0010] The limiting pins are welded to the diaphragm pump body. The limiting pins are located around the drain port, and there are four sets of limiting pins.

[0011] As a further description of the above technical solution:

[0012] The oil filter screen and the drain port are connected by a slot, and the oil filter screen and the drain port are tightly fitted together. The oil filter screen has a porous mesh structure.

[0013] As a further description of the above technical solution:

[0014] The oil filter screen is provided in two sets, and two sets of impact balls are placed inside the oil filter screen on the right side. The impact balls are made of stainless steel.

[0015] As a further description of the above technical solution:

[0016] The PTFE gasket and the spring bracket are connected by a slot, and the spring and the spring bracket are further supported by the PTFE gasket.

[0017] As a further description of the above technical solution:

[0018] The polytetrafluoroethylene gasket contains magnetic particles mixed inside.

[0019] As a further description of the above technical solution:

[0020] The valve plate and the valve seat are connected by a slot. The spring is located on the lower side of the valve plate. The valve plate and the valve seat are limited by the spring. The valve plate and the valve seat are arranged in opposite directions at the feeding position and in the forward direction at the discharging position.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model utilizes a limiting bolt, an oil filter screen, and impact balls. When in use, the limiting bolt can limit the anti-vibration pads at the feed position, preventing displacement due to high-pressure impact and improving operational safety. At the discharge position, it limits the spring bracket. The oil filter screen filters impurities in the oil as it passes through the feed and discharge positions, confining the impurities inside the screen to prevent them from entering the pump body and ensuring oil purity. When the oil enters the oil filter screen at the feed position, it impacts the impact balls. The impact force and vibration generated between the impact balls effectively dislodge sticky impurities adhering to the oil filter screen, preventing them from clogging the filter screen pores and ensuring smooth oil passage.

[0023] 2. This utility model utilizes a spring and a PTFE gasket. After a period of use, the spring, valve plate, and valve seat will experience some wear. At this time, a PTFE gasket can be inserted into the spring bracket to lift the spring upwards, thereby supporting the valve plate and valve seat again and bringing them together to restore their initial sealing performance, extend their service life, and reduce maintenance and replacement costs. The magnetic particles inside the PTFE gasket will adsorb tiny metal impurities in the oil, preventing them from entering the pump body. Combined with the oil filter screen, multi-stage filtration further improves the purity of the oil and ensures long-term stable operation of the equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0025] Figure 2 This is a schematic diagram showing the disassembled structure of the diaphragm pump body, valve plate, and pump cover of this utility model.

[0026] Figure 3 This is a schematic diagram of the overall disassembled structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the mating structure of the diaphragm pump body and valve plate of this utility model;

[0028] Figure 5 This is a schematic diagram showing the disassembled structure of the diaphragm pump body and the impact ball of this utility model;

[0029] Figure 6 This is a schematic diagram showing the disassembled structure of the spring bracket and the shock-absorbing pad of this utility model.

[0030] The following are the labels in the diagram: 1. Diaphragm pump body; 2. Drain port; 3. Limiting bolt; 4. Oil filter screen; 5. Impact ball; 6. Auxiliary components; 601. Valve plate; 602. Spring bracket; 603. PTFE gasket; 604. Spring; 605. Valve plate; 606. Valve seat; 607. Valve seat outer O-ring; 608. Anti-vibration gasket; 609. Sealing O-ring; 610. Pump cover; 611. Inlet; 612. Outlet. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-6 As shown, this utility model provides a technical solution: an internal auxiliary structure for a diaphragm pump cover and valve plate, including a diaphragm pump body 1, a drain port 2 is provided in the middle of the upper side of the diaphragm pump body 1, a limit pin 3 is provided on the surface of the drain port 2, an oil filter screen 4 is provided inside the drain port 2, an impact ball 5 is provided inside the oil filter screen 4, an auxiliary component 6 is provided on the upper side of the diaphragm pump body 1, the auxiliary component 6 includes a valve plate 601 installed on the upper side of the diaphragm pump body 1, a spring bracket 602 passes through the middle of the valve plate 601, and a ball bearing is provided on the upper side of the spring bracket 602. A PTFE gasket 603 has a spring 604 on its upper side, a valve plate 605 on its upper side, a valve seat 606 on its upper side, an outer O-ring 607 on the valve seat 606, an anti-vibration pad 608 on the upper side of the outer O-ring 607, a sealing O-ring 609 on the upper side of the anti-vibration pad 608, a pump cover 610 on the upper side of the sealing O-ring 609, a feed inlet 611 on the upper right end of the pump cover 610, and a discharge outlet 612 on the left side of the feed inlet 611.

[0033] Furthermore, the limiting pin 3 is welded to the diaphragm pump body 1. The limiting pin 3 is set around the drain port 2. There are four sets of limiting pins 3. When needed, the limiting pin 3 can limit the anti-vibration pad 608 at the feed position to avoid displacement caused by high pressure impact and improve operational safety. At the discharge position, it can limit the spring bracket 602 at the discharge position.

[0034] Furthermore, the oil filter screen 4 and the drain port 2 are connected by a slot, and the oil filter screen 4 and the drain port 2 are tightly fitted together. The oil filter screen 4 has a porous mesh structure. When it is needed, the oil filter screen 4 can filter impurities in the oil as the oil passes through the inlet and outlet positions, and confine the impurities inside the oil filter screen 4 to prevent impurities from entering the pump body and ensure the purity of the oil.

[0035] Furthermore, the oil filter screen 4 is provided with two sets, and two sets of impact balls 5 are placed inside the oil filter screen 4 on the right side. The impact balls 5 are made of stainless steel. When the oil enters the oil filter screen 4 at the feed position, the oil will impact the impact balls 5. The impact force and vibration generated between the impact balls 5 can effectively shake off the sticky impurities attached to the oil filter screen 4, prevent impurities from clogging the filter screen pores, and ensure that the oil passes through smoothly.

[0036] Furthermore, the PTFE gasket 603 and the spring bracket 602 are connected by a slot, and the spring 604 and the spring bracket 602 are further supported by the PTFE gasket 603. After a period of use, the spring 604, valve plate 605, and valve seat 606 will experience a certain degree of wear. At this time, a PTFE gasket 603 can be inserted into the spring bracket 602 to lift the spring 604 upward, thereby supporting the valve plate 605 and valve seat 606 again, and bringing the valve plate 605 and valve seat 606 together, restoring their initial sealing performance, extending their service life, and reducing maintenance and replacement costs.

[0037] Furthermore, the PTFE gasket 603 contains magnetic particles. When oil passes through the PTFE gasket 603, the magnetic particles inside the PTFE gasket 603 will adsorb tiny metal impurities in the oil, preventing them from entering the pump body. Together with the oil filter screen 4, multi-stage filtration is performed to further improve the purity of the oil and ensure the long-term stable operation of the equipment.

[0038] Furthermore, the valve plate 605 and the valve seat 606 are connected by a slot, and the spring 604 is located on the lower side of the valve plate 605. The valve plate 605 and the valve seat 606 are limited by the spring 604. The valve plate 605 and the valve seat 606 are arranged in opposite directions at the feed position and in the forward direction at the discharge position. When it is needed, when the oil passes through the feed position, the valve plate 605 is tightly attached to the valve seat 606 by the elastic force of the spring 604 to prevent backflow. At the discharge position, the valve plate 605 opens with the oil pressure to ensure smooth discharge, providing double protection for stable oil flow.

[0039] Working principle: When needed, first place the diaphragm pump body 1 in the required position. Then, according to the installation sequence, insert the spring 604 into the spring bracket 602, place the valve plate 605 on top of the spring 604, place the valve seat 606 on top of the valve plate 605, place the outer O-ring 607 on top of the valve seat 606, and place the anti-vibration pad 608 on top of the outer O-ring 607. Then, according to the inlet and outlet positions, place this structure forward into the outlet position in the middle of the valve plate 601, and then place another set of this structure in reverse into the inlet position. The ends of the two sets of structures are respectively aligned with the drain port 2. An oil filter screen 4 is placed inside each drain port 2, and there is a limit post on the outside. Bolt 3 limits the end of the structure, especially the oil filter screen 4 at the feed position, which has two impact balls 5 placed inside. After installation, the sealing O-ring 609 is put into the pump cover 610, and then the pump cover 610 is installed onto the diaphragm pump body 1 with bolts. The whole assembly is now installed. After installation, the feed pipe is connected to the feed port 611 and the discharge pipe is connected to the discharge port 612. After a period of use, the spring 604, valve seat 606 and valve plate 605 will wear. At this time, the polytetrafluoroethylene gasket 603 is inserted into the spring bracket 602, so that the structure of the spring 604, valve seat 606 and valve plate 605 fits better. This completes the use process of an auxiliary structure inside the diaphragm pump cover and valve plate.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary structure inside the pump cover and valve plate of a diaphragm pump, comprising a diaphragm pump body (1), characterized in that: Each of the diaphragm pump bodies (1) has a drain port (2) located in the middle of its upper side. Each drain port (2) has a limiting bolt (3) on its surface. An oil filter screen (4) is located inside each drain port (2), and an impact ball (5) is located inside the oil filter screen (4). An auxiliary component (6) is located on the upper side of the diaphragm pump body (1). The auxiliary component (6) includes a valve plate (601) mounted on the upper side of the diaphragm pump body (1). A spring bracket (602) passes through the middle of the valve plate (601). A polytetrafluoroethylene gasket (603) is located on the upper side of the spring bracket (602). The upper side of the polytetrafluoroethylene gasket (603)... A spring (604) is provided, a valve plate (605) is provided on the upper side of the spring (604), a valve seat (606) is installed on the upper side of the valve plate (605), an outer O-ring (607) is provided above the valve seat (606), an anti-vibration pad (608) is installed on the upper side of the outer O-ring (607), a sealing O-ring (609) is provided on the upper side of the anti-vibration pad (608), a pump cover (610) is installed on the upper side of the sealing O-ring (609), a feed inlet (611) is provided on the upper right end of the pump cover (610), and a discharge outlet (612) is provided on the left side of the feed inlet (611).

2. The auxiliary structure inside the diaphragm pump cover and valve plate according to claim 1, characterized in that, The limiting pin (3) is welded to the diaphragm pump body (1). The limiting pin (3) is located around the drain port (2). There are four sets of the limiting pin (3).

3. The auxiliary structure inside the diaphragm pump cover and valve plate according to claim 1, characterized in that, The oil filter screen (4) and the drain port (2) are connected by a slot, and the oil filter screen (4) and the drain port (2) are tightly fitted together. The oil filter screen (4) has a porous mesh structure.

4. The auxiliary structure inside the diaphragm pump cover and valve plate according to claim 1, characterized in that, The oil filter screen (4) is provided with two sets, and two sets of impact balls (5) are placed inside the oil filter screen (4) on the right side. The impact balls (5) are made of stainless steel.

5. The auxiliary structure inside the diaphragm pump cover and valve plate according to claim 1, characterized in that, The polytetrafluoroethylene gasket (603) and the spring bracket (602) are connected by a slot, and the spring (604) and the spring bracket (602) are supported by the polytetrafluoroethylene gasket (603).

6. The auxiliary structure inside the diaphragm pump cover and valve plate according to claim 1, characterized in that, The polytetrafluoroethylene gasket (603) contains magnetic particles mixed inside.

7. The auxiliary structure inside the diaphragm pump cover and valve plate according to claim 1, characterized in that, The valve plate (605) and the valve seat (606) are connected by a slot. The spring (604) is located on the lower side of the valve plate (605). The valve plate (605) and the valve seat (606) are limited by the spring (604). The valve plate (605) and the valve seat (606) are arranged in opposite directions at the feeding position and in the forward direction at the discharging position.

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