Aluminum alloy explosion-proof magnetic diaphragm pump

Abstract

The utility model discloses an aluminum alloy explosion-proof magnetic diaphragm pump, which relates to the technical field of metering pumps, and has the technical scheme that the aluminum alloy explosion-proof magnetic diaphragm pump comprises a pump body and a valve body seat detachably connected with the pump body, a floating mandrel is arranged in the pump body, and a diaphragm is arranged at one end, facing the valve body seat, of the floating mandrel. The valve body seat is provided with a liquid inlet channel, a connecting groove and a liquid outlet channel which are sequentially communicated, the cross section area of the communication position of the connecting groove and the liquid inlet channel is smaller than the cross section area of the liquid inlet channel, and the cross section area of the communication position of the connecting groove and the liquid outlet channel is smaller than the cross section area of the liquid outlet channel. The diaphragm is located in the connecting groove and covers the communication position of the connecting groove and the liquid inlet channel and the communication position of the connecting groove and the liquid outlet channel. By means of the structural arrangement, the deformation quantity needed by the diaphragm is small, the diaphragm is not prone to fracture, and the defect that inlet pumps with similar functions are poor in anti-explosion performance is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of metering pumps, and more specifically, to an aluminum alloy explosion-proof magnetic diaphragm pump. Background Technique

[0002] A metering pump is a special positive displacement pump that can measure the fluid being transported. It can accurately control the flow rate of the fluid. An electromagnetic diaphragm metering pump is a type of metering pump. It is driven by an electromagnet and is designed for transporting small-flow and low-pressure fluids. It has the advantages of simple structure, easy control, low energy consumption, accurate metering, and convenient adjustment.

[0003] In the prior art, an electromagnetic diaphragm metering pump drives a floating core shaft through an electromagnet to overcome the spring resistance, thereby realizing the push-pull movement of the diaphragm in the diaphragm pump, and making the diaphragm block or open the fluid flow channel. However, for a conventional electromagnetic diaphragm metering pump, in order to completely block the fluid flow channel, the diaphragm inside is prone to excessive push-pull, resulting in diaphragm fracture and rupture, affecting the use of the metering pump. And since explosion-proof diaphragm pumps in the domestic market are basically not publicly sold, and diaphragm pumps in the international market entering the Chinese chemical dosing industry do not meet the usage requirements of natural gas explosion-proof sites, there are certain safety hazards in the actual use process.

[0004] Therefore, it is necessary to provide an aluminum alloy explosion-proof magnetic diaphragm pump to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an aluminum alloy explosion-proof magnetic diaphragm pump to solve the problems raised in the above background technique.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] An aluminum alloy explosion-proof magnetic diaphragm pump includes a pump body and a valve body seat detachably connected thereto. A floating core shaft is provided inside the pump body, and a diaphragm is provided at one end of the floating core shaft facing the valve body seat.

[0008] The valve body seat is provided with a liquid inlet channel, a connecting groove, and a liquid outlet channel that are connected in sequence. The cross-sectional area of the connecting groove at the connection with the liquid inlet channel is smaller than the cross-sectional area of the liquid inlet channel, and the cross-sectional area of the connecting groove at the connection with the liquid outlet channel is smaller than the cross-sectional area of the liquid outlet channel. The diaphragm is located in the connecting groove and covers the connection of the connecting groove with the liquid inlet channel and the connection of the connecting groove with the liquid outlet channel.

[0009] The technical solution of the utility model is further set as: the connecting groove is concave, and the depth of the connecting groove is smaller than the distance from its top edge to the axis of the liquid inlet channel or the axis of the liquid outlet channel.

[0010] The technical solution of the present utility model is further set as follows: A connection cover is provided between the valve body seat and the pump body. The valve body seat and the connection cover are jointly and detachably connected to the pump body through a plurality of bolts. On the mutually facing surfaces of the valve body seat and the connection cover, there are respectively a concave portion and a convex portion that match each other. There is a spacing between the inner bottom surface of the concave portion and the top surface of the convex portion. The connection groove is opened at the concave portion, and the floating core shaft penetrates through the convex portion.

[0011] The technical solution of the present utility model is further set as follows: A groove coaxial with the floating core shaft is opened at the convex portion. A chamfer is provided at the top edge of the groove. The diaphragm is detachably connected to the floating core shaft, and the connection part of the two is located within the groove.

[0012] The technical solution of the present utility model is further set as follows: An armature iron is fixedly connected inside the pump body. The floating core shaft penetrates through the armature iron, and an armature is fixedly connected to the outer peripheral wall thereof. A skeleton is jointly provided at one end of the armature iron and the armature iron facing each other. A coil is wound around the skeleton. A spring that abuts against the skeleton is sleeved on the end of the armature away from the armature iron.

[0013] The technical solution of the present utility model is further set as follows: A shock-absorbing ring is provided on the end face of the armature iron facing the armature.

[0014] The technical solution of the present utility model is further set as follows: An end cover is detachably connected to the end of the pump body away from the valve body seat. An adjusting screw rod that penetrates through it is provided on the end cover. One end of the adjusting screw rod is connected to the floating core shaft, and a knob located on the end cover is provided at the other end of the adjusting screw rod.

[0015] The technical solution of the present utility model is further set as follows: A plurality of reinforcing ribs are arrayed on the surface of the end of the pump body facing the valve body seat.

[0016] The technical solution of the present utility model is further set as follows: Ball valves are provided in both the liquid inlet channel and the liquid outlet channel.

[0017] The technical solution of the present utility model is further set as follows: Two sets of ball valves are provided in both the liquid inlet channel and the liquid outlet channel.

[0018] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0019] Through the structural design, the connection points between the liquid inlet channel and the connection groove, as well as between the connection groove and the liquid outlet channel, are both located within the covered area of the diaphragm. When the edge of the diaphragm abuts against the connection groove, the diaphragm only needs to deform slightly to fit with the connection groove and complete the pumping of the fluid. When inhaling the fluid, the diaphragm can move at the spacing and groove positions to control the flow rate of the inhaled fluid, avoiding excessive pushing and pulling in the central area of the diaphragm, thereby effectively preventing the diaphragm from breaking or rupturing and ensuring the stable use of this pump.

[0020] Through the structural design, when a certain voltage is applied across the two ends of the coil in the pump body, a certain current will flow through the coil, generating an electromagnetic effect. The armature will move towards the striker under the attraction of the electromagnetic force, overcoming the thrust of the spring, and driving the floating mandrel to move in the pump body, controlling the state of the diaphragm to achieve the effect of fluid inhalation and discharge. During this process, the shock-absorbing ring can reduce the impact force between the armature and the striker, and the reinforcing ribs arranged on the surface of the pump body can enhance the structural strength of the pump body, endowing it with reliable explosion-proof ability and improving its use safety. Multiple components inside the pump body are all made of metal materials, effectively improving the corrosion resistance of the pump body and having reliable explosion-proof ability, making it suitable for use in dangerous places with explosive gas mixtures. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2 is an exploded view of the present utility model;

[0023] Figure 3 is a cross-sectional view of the present utility model;

[0024] Figure 4 is Figure 3 an enlarged view of part A in

[0025] Figure 5 is Figure 3 an enlarged view of part B in

[0026] In the figures: 1, pump body; 2, valve body seat; 3, floating mandrel; 4, diaphragm; 5, liquid inlet channel; 6, connection groove; 7, liquid outlet channel; 8, connection cover; 9, concave part; 10, convex part; 11, spacing; 12, groove; 13, chamfer; 14, striker; 15, armature; 16, skeleton; 17, coil; 18, spring; 19, shock-absorbing ring; 20, end cover; 21, adjusting screw; 22, knob; 23, reinforcing rib; 24, ball valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to more clearly understand the technical means of the present utility model and be able to implement it in accordance with the content of the specification, the following further describes in detail the specific implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model but not to limit the scope of the present utility model. Embodiment

[0028] As Figures 1 to 5 shown, the present utility model provides an aluminum alloy explosion-proof magnetic diaphragm pump, which includes a pump body 1, a valve body seat 2 and a connection cover 8 located between the two. All three are made of aluminum alloy material. The valve body seat 2 and the connection cover 8 are jointly detachably connected to the pump body 1 through a plurality of bolts. On the mutually facing surfaces of the valve body seat 2 and the connection cover 8, there are respectively provided a concave portion 9 and a convex portion 10 that match each other. There is a spacing 11 between the inner bottom surface of the concave portion 9 and the top surface of the convex portion 10. On the surface of the end of the pump body 1 facing the valve body seat 2 and the connection cover 8, a plurality of reinforcing ribs 23 are arranged in an array.

[0029] Through the setting of the above structure, it is more convenient and fast to assemble the valve body seat 2 and the connection cover 8 onto the pump body 1, and the concave portion 9 and the convex portion 10 can also play an auxiliary role in installation and connection, facilitating positioning during this process. The reinforcing ribs 23 on the surface of the pump body 1 are in an annular structure, which improves the structural strength of the pump body 1, endows it with reliable explosion-proof performance, and enhances the safety during use.

[0030] As Figures 1 to 5 shown, the valve body seat 2 is provided with a liquid inlet channel 5, a connection groove 6 and a liquid outlet channel 7 that are connected in sequence from bottom to top. The liquid inlet channel 5 and the liquid outlet channel 7 are coaxially arranged and two groups of ball valves 24 are provided in both of them. The connection groove 6 is opened at the concave portion 9 and is concave-shaped. The depth of the connection groove 6 is less than the distance from the inner bottom surface of the concave portion 9 to the axes of the liquid inlet channel 5 and the liquid outlet channel 7. The cross-sectional area of the connection groove 6 at the connection with the liquid inlet channel 5 is smaller than the cross-sectional area of the liquid inlet channel 5, and the cross-sectional area of the connection groove 6 at the connection with the liquid outlet channel 7 is smaller than the cross-sectional area of the liquid outlet channel 7.

[0031] As Figures 1 to 5 shown, a floating core shaft 3 is provided in the pump body 1, which penetrates through the connection cover 8 and the convex portion 10. One end of the floating core shaft 3 facing the valve body seat 2 is detachably connected with a diaphragm 4 made of rubber material. The diaphragm 4 is located in the connection groove 6 and covers the connection between the connection groove 6 and the liquid inlet channel 5 and the connection between the connection groove 6 and the liquid outlet channel 7. A groove 12 coaxial with the floating core shaft 3 is opened at the convex portion 10. A chamfer 13 is opened at the top edge of the groove 12. The connection between the diaphragm 4 and the floating core shaft 3 is located in the groove 12.

[0032] Through the setting of the above structure, the ball valves 24 in the liquid inlet channel 5 and the liquid outlet channel 7 can be opened or closed according to the operation of the floating mandrel 3 in the pump body 1, so as to realize the transportation of fluid. The setting method of the connecting groove 6 makes the cross-sectional area of the connection between the liquid inlet channel 5 and the liquid outlet channel 7 and it smaller, which is convenient for the diaphragm 4 to block and open. When the diaphragm 4 needs to block, its edge abuts against the inner wall of the connecting groove 6, and only a small deformation is required to completely fit with the connecting groove 6. When it needs to be opened, the diaphragm 4 will move along with the floating mandrel 3. The distance 11 between the concave part 9 and the convex part 10 gives the diaphragm 4 space to move, so that it only needs to move when opening, without generating deformation. The existence of the groove 12 is convenient for the operator to remove the diaphragm 4 from the floating mandrel 3 for replacement and other operations. However, if the single - time flow rate of the fluid to be pumped is large, the diaphragm 4 can also move into the groove 12. The existence of the chamfer 13 is convenient for the diaphragm 4 to move in and is also convenient for the operator to replace the diaphragm 4.

[0033] As Figures 1 to 5 shown, a striker 14 is fixedly connected in the pump body 1. The floating mandrel 3 passes through the striker 14 and an armature 15 is fixedly connected to its outer peripheral wall. A skeleton 16 is jointly provided at one end of the striker 14 and the armature 15 facing each other. A coil 17 is wound around the outer wall of the skeleton 16. A spring 18 that abuts against the skeleton 16 is sleeved on the end of the armature 15 away from the striker 14. A shock - absorbing ring 19 is provided on the end face of the striker 14 facing the armature 15.

[0034] Through the setting of the above structure, when a certain voltage is applied across the two ends of the coil 17 in the pump body 1, a certain current will flow through the coil 17, thus generating an electromagnetic effect. The armature 15 will move towards the striker 14 by overcoming the thrust of the spring 18 under the attraction of the electromagnetic force, thereby driving the floating mandrel 3 to move in the pump body 1, controlling the state of the diaphragm 4 to achieve the effect of fluid inhalation and discharge. And in this process, the shock - absorbing ring 19 can reduce the impact force between the armature 15 and the striker 14.

[0035] As Figures 1 to 5 shown, one end of the pump body 1 away from the valve body seat 2 is detachably connected with an end cover 20 made of aluminum alloy. An adjusting screw 21 passing through it is provided on the end cover 20. One end of the adjusting screw 21 is connected to the floating mandrel 3, and the other end of the adjusting screw 21 is provided with a knob 22 located on the end cover 20.

[0036] Through the setting of the above structure, by rotating the knob 22 on the end cover 20, the adjusting screw 21 can be driven to rotate, thereby adjusting the stroke distance of the floating mandrel 3, and further controlling the flow rate of the fluid pumped in and pumped out.

[0037] As Figures 1 to 5As shown in the figure, the power system in the pump body 1 uses an electromagnetic coil 17 to drive an armature 15 to deliver pulsed power to a floating mandrel 3 in the pump body 1. When the coil 17 is energized, the floating mandrel 3 overcomes the resistance of the spring 18 and pushes the diaphragm 4 into the connecting groove 6 to pump out the fluid. When the coil 17 is de-energized, the spring 18 drives the armature 15, the floating mandrel 3 and the diaphragm 4 to reset to pump in the fluid, thereby realizing the push-pull movement of the diaphragm 4, so that the output liquid can be added to the natural gas in an atomized manner in space, making the added medicament evenly diffused. The power output coil 17 reduces the magnetic eddy current generated by the aluminum material through the closed-loop method and increases the output power.

[0038] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. An aluminum alloy explosion-proof magnetic diaphragm pump, comprising a pump body (1) and a valve body seat (2) detachably connected thereto, wherein a floating mandrel (3) is arranged in the pump body (1), and a diaphragm (4) is arranged at one end of the floating mandrel (3) facing the valve body seat (2), characterized in that: The valve body seat (2) is provided with a liquid inlet channel (5), a connecting groove (6) and a liquid outlet channel (7) which are connected in sequence; the cross-sectional area of ​​the connecting groove (6) and the liquid inlet channel (5) is smaller than the cross-sectional area of ​​the liquid inlet channel (5); the cross-sectional area of ​​the connecting groove (6) and the liquid outlet channel (7) is smaller than the cross-sectional area of ​​the liquid outlet channel (7); the diaphragm (4) is located in the connecting groove (6) and covers the connecting groove (6) and the liquid inlet channel (5) and the connecting groove (6) and the liquid outlet channel (7).

2. The aluminum alloy explosion-proof magnetic diaphragm pump according to claim 1, characterized in that: The connecting groove (6) is concave in shape, and the depth of the connecting groove (6) is less than the distance from its top edge to the axis of the liquid inlet channel (5) or the axis of the liquid outlet channel (7).

3. The aluminum alloy explosion-proof magnetic diaphragm pump according to claim 2, characterized in that: A connecting cover (8) is provided between the valve body seat (2) and the pump body (1); the valve body seat (2) and the connecting cover (8) are detachably connected to the pump body (1) via a plurality of bolts; mutually matching recesses (9) and protrusions (10) are provided on the surfaces facing each other of the valve body seat (2) and the connecting cover (8); a spacing (11) exists between the inner bottom surface of the recess (9) and the top surface of the protrusion (10); the connecting groove (6) is provided at the recess (9), and the floating core shaft (3) passes through the protrusion (10).

4. The aluminum alloy explosion-proof magnetic diaphragm pump according to claim 3 is characterized in that: The convex portion (10) is provided with a groove (12) coaxially arranged with the floating core shaft (3), the top edge of the groove (12) is provided with a chamfer (13), and the diaphragm (4) is detachably connected to the floating core shaft (3) and the connection between the two is located in the groove (12).

5. The aluminum alloy explosion-proof magnetic diaphragm pump according to claim 1, characterized in that: A striker (14) is fixedly connected inside the pump body (1), the floating core shaft (3) passes through the striker (14) and an armature (15) is fixedly connected to its outer peripheral wall, a frame (16) is provided on the ends of the striker (14) and the armature (15) facing each other, a coil (17) is wound around the frame (16), and a spring (18) is sleeved on the end of the armature (15) away from the striker (14) and abutting against the frame (16).

6. The aluminum alloy explosion-proof magnetic diaphragm pump according to claim 5, characterized in that: A shock absorbing ring (19) is provided on the end surface of the impact iron (14) facing the armature (15).

7. The aluminum alloy explosion-proof magnetic diaphragm pump according to claim 1, characterized in that: An end of the pump body (1) away from the valve body seat (2) is detachably connected to an end cover (20), and an adjusting screw (21) is provided on the end cover (20) and passes through the end cover, one end of the adjusting screw (21) is connected to the floating core shaft (3), and the other end of the adjusting screw (21) is provided with a knob (22) located on the end cover (20).

8. The aluminum alloy explosion-proof magnetic diaphragm pump according to claim 1, characterized in that: A plurality of reinforcing ribs (23) are distributed in an array on the surface of one end of the pump body (1) facing the valve body seat (2).

9. The aluminum alloy explosion-proof magnetic diaphragm pump according to claim 1, characterized in that: Ball valves (24) are provided in both the liquid inlet channel (5) and the liquid outlet channel (7).

10. The aluminum alloy explosion-proof magnetic diaphragm pump according to claim 9, characterized in that: The ball valves (24) in the liquid inlet channel (5) and the liquid outlet channel (7) are each provided with two groups.

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