Feed pipe for corrosion-resistant diaphragm pump

Abstract

The utility model discloses a feeding pipe for a corrosion-resistant diaphragm pump, and belongs to the technical field of corrosion-resistant diaphragm pumps. The feeding pipe comprises a connecting pipe body, a sealing end cover and two feeding pipe tee joints of the same structure, the two feeding pipe tee joints are detachably connected to the two ends of the connecting pipe body respectively, an outer end channel of one feeding pipe tee joint serves as a feeding port, the outer end of the other feeding pipe tee joint is connected with the sealing end cover, and the sealing end cover is connected with the feeding pipe tee joint. Sealing gaskets are arranged between the feeding pipe tee joints and the connecting pipe body and between the feeding pipe tee joints and the sealing end covers, connecting holes are formed in the edges of the two feeding pipe tee joints, boss long studs penetrate through the connecting holes, the connecting holes are directly connected with the diaphragm chamber through nuts, and the feeding valve box is clamped between the diaphragm chamber and the feeding pipe tee joints. Upper end passages of the two feed pipe tee joints are used as discharge ports and are communicated with the interior of the feed valve box. The double-cylinder single-action corrosion-resistant diaphragm pump can solve the problem that a stainless steel feeding pipe of a conventional double-cylinder single-action corrosion-resistant diaphragm pump cannot convey slurry with strong metal corrosivity.

Description

TECHNICAL FIELD

[0001] The utility model belongs to corrosion -resistant diaphragm pump technical field, concretely relates to a kind of feed pipe for corrosion -resistant diaphragm pump. BACKGROUND

[0002] Corrosion -resistant diaphragm pump is the functional equipment of slurry delivery, feed pipe is contacted with solid-liquid two-phase medium, mainly consider its pressure bearing, wear resistance, corrosion resistance.

[0003] Double-cylinder single-action corrosion -resistant diaphragm pump generally uses stainless steel as feed pipe material, but for part strong metal corrosive slurry, conventional stainless steel material cannot satisfy corrosion resistance requirement, and titanium alloy and other metal materials that can satisfy requirement are scarce in resource, high in price, difficult in welding, harsh in production environment and equipment requirement, difficult to be widely applied in corrosion -resistant diaphragm pump feed pipe production. UTILITY MODEL CONTENT

[0004] The utility model is just for the above problem, make up for the deficiency of prior art, provide a kind of feed pipe for corrosion -resistant diaphragm pump;The utility model can solve the problem that conventional double-cylinder single-action corrosion -resistant diaphragm pump stainless steel feed pipe cannot transport strong metal corrosive slurry.

[0005] To achieve the above object, the utility model adopts the following technical scheme.

[0006] The utility model provides a kind of feed pipe for corrosion -resistant diaphragm pump, it is characterized in that, including connecting pipe body, sealing end cover and two identical feed pipe tees, two the feed pipe tee is detachably connected at the both ends of the connecting pipe body respectively, the inner end passageway of two the feed pipe tee is communicated with the connecting pipe body, the outer end passageway of one the feed pipe tee is used as feed inlet, the outer end of another the feed pipe tee is connected with the sealing end cover, sealing pad is arranged between the feed pipe tee and the connecting pipe body, between the feed pipe tee and the sealing end cover, the upper end passageway of two the feed pipe tee is communicated with the feed valve box inside as discharge outlet, the middle part of the feed pipe tee is provided with the connecting hole for being connected with feed pipe support.

[0007] Further, the connecting pipe body is fixedly connected by two end flanges and middle straight pipe, two the end flanges are connected with two the feed pipe tee respectively, flange end rubber layer is arranged at the outer end of two the end flanges, the inner surface of the connecting pipe body is covered with connecting pipe rubber layer, the flange end rubber layer and the connecting pipe rubber layer are connected with each other.

[0008] Further, the flange end rubber lining layer and the connecting pipe rubber lining layer are connected by 45° angle wedge.

[0009] Still further, the flange end rubber lining layer is made of corrosion-resistant hard rubber, the connecting pipe rubber lining layer is made of corrosion-resistant soft rubber, and the connecting pipe body is made of carbon steel.

[0010] Further, the left and right ends of the feed pipe tee are externally provided with end rubber lining layers, the upper end of the feed pipe tee is externally provided with a valve box connecting surface rubber lining layer, the inner wall of the feed pipe tee is covered with a tee inner rubber lining layer, and the end rubber lining layers, the valve box connecting surface rubber lining layer and the tee inner rubber lining layer are connected with each other.

[0011] Further, the end rubber lining layers, the valve box connecting surface rubber lining layer and the tee inner rubber lining layer are connected by 45° angle wedge.

[0012] Still further, the end rubber lining layers and the valve box connecting surface rubber lining layer are made of corrosion-resistant hard rubber, the tee inner rubber lining layer is made of corrosion-resistant soft rubber, and the feed pipe tee is made of carbon steel.

[0013] Further, the sealing end cover is a metal piece with a connecting surface made of corrosion-resistant hard rubber.

[0014] Further, the sealing gasket is made of polytetrafluoroethylene material.

[0015] The utility model discloses beneficial effect.

[0016] The utility model discloses with diaphragm chamber direct connection and with feed valve box sandwiched in the middle, has saved the elbow pipe below diaphragm chamber in the conventional diaphragm pump and the valve cover in feed valve box, has cut down the production cost, has reduced the quantity of sealed place, has reduced the risk of leakage, adopts the split design, compared with traditional integral type welding design, and the connecting pipe body and feed pipe tee can be replaced alone, and the maintenance cost is reduced, the rubber lining layer of high surface roughness requirement uses hard rubber, and the rubber lining layer of low surface roughness requirement uses soft rubber, and hard rubber, soft rubber can be respectively constructed according to design requirement, solve the problem of rubber processing, and the component not contacting with slurry in the whole is made of carbon steel, and the component directly contacting with slurry uses the rubber lining layer of corrosion-resistant rubber material, and the sealing gasket is made of polytetrafluoroethylene, and the corrosion-resistant rubber and polytetrafluoroethylene material are strong in performance of strong metal corrosion resistance slurry and wear resistance, compared with titanium alloy and duplex stainless steel and other materials, and the production cost is low, and the processing difficulty is low. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model.

[0018] Figure 1 is a cross-sectional structure schematic view of the utility model.

[0019] Figure 2 is a top view structure schematic view of the utility model.

[0020] Figure 3 is a structure schematic view of the connecting pipe body of the utility model.

[0021] Figure 4 is a structure schematic view of the feed pipe tee joint of the utility model.

[0022] Figure 5 is a structure schematic view of the utility model after installation.

[0023] Marked in the figure: 1 is a connecting pipe body, 2 is a sealing end cover, 3 is a feed pipe tee joint, 4 is a feed inlet, 5 is a sealing gasket, 6 is a boss long stud, 7 is a diaphragm chamber, 8 is a feed valve box, 9 is a discharge outlet, 10 is a feed pipe support, 11 is an end flange, 12 is a middle straight pipe, 13 is a flange end rubber lining layer, 14 is a connecting pipe rubber lining layer, 15 is an end rubber lining layer, 16 is a valve box connecting surface rubber lining layer, 17 is a tee joint inner rubber lining layer, 18 is a total support, 19 is a foundation. Specific embodiments

[0024] In combination with the drawings shown, the embodiment provides a feed pipe for a corrosion-resistant diaphragm pump, including a connecting pipe body 1, a sealing end cover 2 and two structurally identical feed pipe tee joints 3, adopting a split design, compared with the traditional integrated welded design, each component can be replaced individually, reducing maintenance costs, the feed pipe tee joints 3 are structurally identical, a same batch of production can be used, reducing production costs and reducing spare parts types.

[0025] The two feed pipe tee joints 3 are detachably connected at the two ends of the connecting pipe body 1 through hex nuts and boss studs respectively, the inner end passages of the two feed pipe tee joints 3 are both communicated with the connecting pipe body 1, the outer end passage of one of the feed pipe tee joints 3 serves as a feed inlet 4, and the outer end of the other feed pipe tee joint 3 is connected with the sealing end cover 2 through a hex nut and a boss stud, the sealing end cover 2 is a metal piece with a corrosion-resistant hard rubber connecting surface, the sealing end cover 2 can be conveniently opened during maintenance, improving the work efficiency of the on-site maintenance personnel.

[0026] The sealing gasket 5 is made of polytetrafluoroethylene material, which has strong performance in resisting strong metal corrosive slurry and excellent wear resistance.

[0027] The two feed pipe tees 3 are provided with connecting holes at the edges, which are used to pass through the boss long stud 6 and are directly connected with the diaphragm chamber 7 through a nut, and the feed valve box 8 is clamped between the diaphragm chamber 7 and the feed pipe tee 3, which eliminates the elbow below the diaphragm chamber 7 and the valve cover in the feed valve box 8 in the conventional diaphragm pump, reduces the production cost, reduces the number of sealing places, and reduces the risk of leakage.

[0028] The upper end passages of the two feed pipe tees 3 are communicated with the inside of the feed valve box 8 as discharge ports 9, and the middle part of the feed pipe tee 3 is provided with a connecting hole for connecting with the feed pipe support 10, which is connected with the feed pipe support 10 through a bolt and a spring washer, supports and fixes the fluid end, and slows down the vibration of the fluid end during the operation of the diaphragm pump.

[0029] The feed pipe support 10 and the total support 18 are installed on the foundation 19, and the total support 18 is connected with the diaphragm chamber 7 for fixing the diaphragm chamber 7.

[0030] The connecting pipe body 1 is fixedly connected by two end flanges 11 and a middle straight pipe 12, and the two end flanges 11 are connected with the two feed pipe tees 3 respectively.

[0031] The connecting pipe body 1 is made of carbon steel, which has low production cost and low processing difficulty compared with titanium alloy and duplex stainless steel.

[0032] The two end flanges 11 of the connecting pipe body 1 require high surface roughness, and are provided with flange end rubber lining layers 13 made of corrosion-resistant hard rubber and contacting with the slurry, and the inner surface of the connecting pipe body 1 requires low surface roughness, and is covered with a connecting pipe rubber lining layer 14 made of corrosion-resistant soft rubber and contacting with the slurry. The corrosion-resistant rubber has strong performance in resisting strong metal corrosive slurry and strong wear resistance.

[0033] The flange end rubber lining layer 13 and the connecting pipe rubber lining layer 14 are connected at an angle of 45°, which can lock the soft rubber and increase the contact area of the soft and hard rubbers to improve the friction and sealing performance, so as to ensure that the soft rubber does not move and the slurry does not penetrate into the metal part.

[0034] The feed pipe tee 3 is made of carbon steel, and the outer surfaces of the left and right ends require high surface roughness, and are provided with end rubber lining layers 15 made of corrosion-resistant hard rubber and contacting with the slurry, and the outer surface of the upper end of the feed pipe tee 3 requires high surface roughness, and is provided with a valve box connecting surface rubber lining layer 16 made of corrosion-resistant hard rubber and contacting with the slurry, and the inner wall surface of the feed pipe tee 3 requires low surface roughness, and is covered with a tee inner rubber lining layer 17 contacting with the slurry.

[0035] The end rubber lining layer 15, the valve box connecting surface rubber lining layer 16 and the tee rubber lining layer 17 are all connected with each other with 45° angle wedge shape, which can increase the contact area of the soft rubber and the hard rubber to improve the friction and the sealing property, and ensure that the soft rubber does not move and the slurry does not penetrate into the metal part.

[0036] It can be understood that the above specific description of the present application is only used for illustrating the present application and is not limited to the technical solutions described in the embodiments of the present application. It should be understood by those skilled in the art that the present application can still be modified or replaced equivalently to achieve the same technical effect. As long as the use needs are met, it is within the protection scope of the present application.

Claims

1. A feed tube for a corrosion-resistant diaphragm pump, characterized in that, The utility model provides a kind of feed pipe tee joint, including connecting pipe body (1), sealing end cover (2) and two structures same feed pipe tee joint (3), two described feed pipe tee joint (3) is detachably connected in two ends of described connecting pipe body (1), two described feed pipe tee joint (3) inner end passage is communicated with described connecting pipe body (1), one described feed pipe tee joint (3) outer end passage is as feed inlet (4), another described feed pipe tee joint (3) outer end is connected described sealing end cover (2), described feed pipe tee joint (3) and described connecting pipe body (1) between, described feed pipe tee joint (3) and described sealing end cover (2) between are provided with sealing gasket (5), two described feed pipe tee joint (3) edge is provided with connecting hole, for passing through boss long stud (6) and by nut and diaphragm chamber (7) direct connection, and feed valve box (8) is clamped between described diaphragm chamber (7) and described feed pipe tee joint (3), two described feed pipe tee joint (3) upper end passage is as discharge outlet (9) and described feed valve box (8) inside communication, described feed pipe tee joint (3) middle part is provided with the connecting hole for being connected with feed pipe support (10).

2. A feed tube for a corrosion-resistant diaphragm pump according to claim 1, characterized in that Described connecting pipe body (1) is fixedly connected by two end flanges (11) and middle straight pipe (12), two described end flanges (11) are connected with two described feed pipe tee joint (3), two described end flanges (11) outer end is provided with flange end rubber lining (13), the inner surface of described connecting pipe body (1) is provided with connecting pipe rubber lining (14), described flange end rubber lining (13) and described connecting pipe rubber lining (14) are connected with each other.

3. A feed tube for a corrosion-resistant diaphragm pump according to claim 2, characterized in that Described flange end rubber lining (13) and described connecting pipe rubber lining (14) are connected with 45 ° angle wedge.

4. A feed tube for a corrosion-resistant diaphragm pump according to claim 3, characterized in that Described flange end rubber lining (13) is made of corrosion-resistant hard rubber, and the connecting pipe rubber lining is made of corrosion-resistant soft rubber, and the connecting pipe body (1) is made of carbon steel.

5. A feed tube for a corrosion-resistant diaphragm pump according to claim 1, wherein, The left and right outer ends of the feed pipe tee joint (3) are provided with end rubber linings (15), the upper outer end of the feed pipe tee joint (3) is provided with a valve box connecting surface rubber lining (16), and the inner wall of the feed pipe tee joint (3) is covered with a tee joint inner rubber lining (17). The end rubber linings (15), the valve box connecting surface rubber lining (16), and the tee joint inner rubber lining (17) are connected with each other.

6. A feed tube for a corrosion-resistant diaphragm pump according to claim 5, characterized in that The end rubber linings (15), the valve box connecting surface rubber lining (16), and the tee joint inner rubber lining (17) are connected with 45 ° angle wedge.

7. A feed tube for a corrosion-resistant diaphragm pump according to claim 6, characterized in that The end rubber linings (15) and the valve box connecting surface rubber lining (16) are made of corrosion-resistant hard rubber, and the tee joint inner rubber lining (17) is made of corrosion-resistant soft rubber, and the feed pipe tee joint (3) is made of carbon steel.

8. A feed tube for a corrosion-resistant diaphragm pump according to claim 1, characterized in that The sealing end cover (2) is a metal piece with a corrosion-resistant hard rubber connecting surface.

9. A feed tube for a corrosion-resistant diaphragm pump according to claim 1, wherein, The sealing gasket (5) is made of polytetrafluoroethylene material.

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