Long-shaft in-groove pump

Abstract

The utility model provides a long shaft in-groove pump. Comprising a connecting plate, a pump head shell arranged on one side of the connecting plate, a motor arranged on the other side of the connecting plate, a pump shaft with one end arranged in the pump head shell and the other end penetrating through the connecting plate to be connected with a rotating shaft of the motor, and a pump shell arranged between the pump head shell and the connecting plate and located outside the pump shaft. The in-groove pump comprises a pump head shell, a pump shaft arranged in the pump head shell, an impeller arranged in the pump head shell and connected with the pump shaft, a pump head filter screen arranged on the pump head shell and an outlet pipe with one end communicated with the pump head shell and the other end penetrating out of a connecting plate, and when the distance between the pump head shell and the connecting plate is too long and the in-groove pump is used, the impeller is not prone to shaking in the pump head shell; friction between the impeller and the pump head shell is not prone to being caused, and therefore the in-groove pump is not prone to being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of in-tank pumps, in particular to a long-axis in-tank pump. Background Art

[0002] The existing in-tank pump is as follows Figure 1 , 2 As shown, the in-tank pump includes a connecting plate 1', a pump head housing 2' arranged on one side of the connecting plate 1', a motor 4' arranged on the other side of the connecting plate 1' and having a rotating shaft 3' extending through the connecting plate 1' into the pump head housing 2', a pump housing 5' arranged between the pump head housing 2' and the connecting plate 1' and located outside the rotating shaft 3' of the motor 4', an impeller 6' arranged in the pump head housing 2' and connected to the rotating shaft 3' of the motor 4', a pump head filter 7' arranged on the pump head housing 2', an outlet pipe 8' one end of which is connected to the pump head housing 2' and the other end of which passes through the connecting plate 1', a flexible joint 9' arranged at the other end of the outlet pipe 8', a connecting ring seat 10' arranged between the inner wall of the pump housing 5' and the rotating shaft 3' of the motor 4' and in contact with the connecting plate 1', and a connecting ring seat 10' arranged between the inner wall of the pump housing 5' and the A connecting ring seat 11' is provided between the rotating shaft 3' of the motor 4' and is fitted with the pump head housing 2', an inner sleeve 12' is arranged on the inner wall of the connecting ring seat 11', an outer sleeve 13' is arranged on the rotating shaft 3' of the motor 4' and cooperates with the inner sleeve 12', a rod sleeve 14' is arranged outside the rotating shaft 3' of the motor 4' and located between the outer sleeve 13' and the connecting ring seat 10', a gas stop ring seat 15' is arranged on the end surface of the connecting ring seat 10' away from the motor 4' and located outside the rod sleeve 14', a V-ring 16' is arranged outside the rod sleeve 14' and fits with the gas stop ring seat 15', a locking cap 17' is arranged on the rotating shaft 3' of the motor 4', is located inside the impeller 6' and fits with the impeller 6', and a sealing ring 18' is arranged outside the rotating shaft 3' of the motor 4' and located between the rod sleeve 14' and the outer sleeve 13'.

[0003] Although the above products can solve the corresponding technical problems, there are still certain defects in their use:

[0004] When the distance between the pump head housing 2' and the connecting plate 1' is too long and the in-tank pump is in use, the impeller 6' is likely to vibrate in the pump head housing 2', which may cause friction between the impeller 6' and the pump head housing 2', thereby causing damage to the in-tank pump. Utility Model Content

[0005] The utility model aims to provide a long-axis in-groove pump in view of the defects and shortcomings of the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A long-axis groove pump, comprising a connecting plate, a pump head housing arranged on one side of the connecting plate, a motor arranged on the other side of the connecting plate, a pump shaft with one end arranged in the pump head housing and the other end passing through the connecting plate and connected to the rotating shaft of the motor, a pump housing arranged between the pump head housing and the connecting plate and located outside the pump shaft, an impeller arranged in the pump head housing and connected to the pump shaft, a pump head filter arranged on the pump head housing, an outlet pipe with one end connected to the pump head housing and the other end passing through the connecting plate, a flexible joint arranged at the other end of the outlet pipe, a connecting ring seat arranged between the inner wall of the pump housing and the pump shaft and affixed to the connecting plate, a connecting ring seat arranged between the inner wall of the pump housing and the pump shaft and affixed to the pump head housing, and an inner shaft arranged on the inner wall of the connecting ring seat A sleeve, an outer sleeve arranged on the pump shaft and matched with the inner sleeve, a rod sleeve arranged outside the pump shaft and located between the outer sleeve and a connecting ring seat, an air-stop ring seat arranged on the end face of the connecting ring seat away from the motor and located outside the rod sleeve, a V-ring arranged outside the rod sleeve and fitted with the air-stop ring seat, a locking cap arranged on the pump shaft and located inside the impeller and fitted with the impeller, a sealing ring arranged outside the pump shaft and located between the rod sleeve and the outer sleeve, a fixed ring seat fixedly arranged on the end face of the connecting plate close to the motor and located outside the other end of the pump shaft, a bearing assembly arranged between the fixed ring seat and the other end of the pump shaft, a connecting ring plate arranged between the fixed ring seat and the motor, and a coupling arranged in the connecting ring plate and connecting the other end of the pump shaft with the rotating shaft of the motor.

[0008] A further improvement is that the interior of the connecting ring plate is connected to the interior of the fixing ring seat, and a plurality of heat dissipation holes for heat dissipation are provided on the connecting ring plate.

[0009] A further improvement is that: the number of the heat dissipation holes is two, and the two heat dissipation holes are symmetrically arranged about the axis of the connecting ring plate.

[0010] A further improvement is that the coupling is a flexible coupling.

[0011] A further improvement is that the bearing assembly includes a bearing box arranged between the fixed ring seat and the other end of the pump shaft, two bearings arranged between the bearing box and the other end of the pump shaft, and a sealing end cover arranged on the end surface of the bearing box and located outside the other end of the pump shaft.

[0012] A further improvement is that the bearing is an angular contact ball bearing.

[0013] A further improvement is that the inner sleeve is a polytetrafluoroethylene sleeve, and the outer sleeve is a silicon carbide sleeve.

[0014] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: when the distance between the pump head housing and the connecting plate is too long and the in-tank pump is in use, the impeller is not likely to vibrate in the pump head housing, and it is not likely to cause friction between the impeller and the pump head housing, thereby not likely to cause damage to the in-tank pump.

[0015] Further effect: the interior of the connecting ring plate is connected to the interior of the fixed ring seat, and a number of heat dissipation holes are provided on the connecting ring plate for heat dissipation. Through the above-mentioned coordination, when the components inside the connecting ring plate and / or the interior of the fixed ring seat generate heat, the heat can be dissipated through the several heat dissipation holes, thereby reducing damage to the pump in the tank and extending the service life of the pump in the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in 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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of the structure of an existing in-tank pump;

[0018] Figure 2 It corresponds to Figure 1 A cross-sectional view of

[0019] Figure 3 It is a structural schematic diagram of the utility model;

[0020] Figure 4 It corresponds to Figure 3 sectional view of .

[0021] Explanation of the accompanying drawings: connecting plate 1', pump head housing 2', rotating shaft 3', motor 4', pump casing 5', impeller 6', pump head filter 7', outlet pipe 8', flexible joint 9', connecting ring seat 10', connecting ring seat 11', inner sleeve 12', outer sleeve 13', rod sleeve 14', air stop ring seat 15', V-ring 16', locking cap 17', sealing ring 18', connecting plate 1, pump head housing 2, motor 3, rotating shaft 4, pump shaft 5, pump casing 6, impeller 7, pump head filter 8, outlet pipe 9, flexible joint 10, connecting ring seat 11, connecting ring seat 12, inner sleeve 13, outer sleeve 14, rod sleeve 15, air stop ring seat 16, V-ring 17, locking cap 18, sealing ring 19, fixed ring seat 20, connecting ring plate 21, coupling 22, heat dissipation hole 23, bearing box 24, bearing 25, sealing end cover 26. DETAILED DESCRIPTION

[0022] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0023] See also Figure 3 to Figure 4 As shown, the technical solution adopted in this specific implementation is:

[0024] A long-axis groove pump, comprising a connecting plate 1, a pump head housing 2 arranged on one side of the connecting plate 1, a motor 3 arranged on the other side of the connecting plate 1, a pump shaft 5 with one end arranged in the pump head housing 2 and the other end passing through the connecting plate 1 and connected to the rotating shaft 4 of the motor 3, a pump housing 6 arranged between the pump head housing 2 and the connecting plate 1 and located outside the pump shaft 5, an impeller 7 arranged in the pump head housing 2 and connected to the pump shaft 5, a pump head filter 8 arranged on the pump head housing 2, an outlet pipe 9 with one end connected to the pump head housing 2 and the other end passing through the connecting plate 1, a flexible joint 10 arranged at the other end of the outlet pipe 9, a connecting ring seat 11 arranged between the inner wall of the pump housing 6 and the pump shaft 5 and affixed to the connecting plate 1, a connecting ring seat 12 arranged between the inner wall of the pump housing 6 and the pump shaft 5 and affixed to the pump head housing 2, an inner shaft sleeve 13 arranged on the inner wall of the connecting ring seat 12, and a connecting ring seat 14 arranged on the inner wall of the pump shaft 5. An outer sleeve 14 disposed on the pump shaft 5 and matched with the inner sleeve 13, a rod sleeve 15 disposed on the outside of the pump shaft 5 and located between the outer sleeve 14 and the connecting ring seat 11, an air stop ring seat 16 disposed on the end face of the connecting ring seat 11 away from the motor 3 and located outside the rod sleeve 15, a V-ring 17 disposed on the outside of the rod sleeve 15 and fitted with the air stop ring seat 16, a locking cap 18 disposed on the pump shaft 5 and located inside the impeller 7 and fitted with the impeller 7, a sealing ring 19 disposed on the outside of the pump shaft 5 and located between the rod sleeve 15 and the outer sleeve 14, a fixed ring seat 20 fixedly disposed on the end face of the connecting plate 1 close to the motor 3 and located outside the other end of the pump shaft 5, a bearing assembly disposed between the fixed ring seat 20 and the other end of the pump shaft 5, a connecting ring plate 21 disposed between the fixed ring seat 20 and the motor 3, and a coupling 22 disposed in the connecting ring plate 21 and connecting the other end of the pump shaft 5 with the rotating shaft 4 of the motor 3. The distance between the pump head housing 2 and the connecting plate 1 may be 0.5M-2.0M, and the length of the pump shaft 5 is greater than the distance between the pump head housing 2 and the connecting plate 1 .

[0025] Through the coordinated arrangement of the above-mentioned structure, when the distance between the pump head housing 2 and the connecting plate 1 is too long and the in-tank pump is in use, the impeller 7 is not likely to vibrate in the pump head housing 2, and it is not likely to cause friction between the impeller 7 and the pump head housing 2, thereby not likely to cause damage to the in-tank pump.

[0026] The interior of the connecting ring plate 21 is connected to the interior of the fixing ring seat 20 . The connecting ring plate 21 is provided with a plurality of heat dissipation holes 23 for heat dissipation. There are two heat dissipation holes 23 symmetrically arranged about the axis of the connecting ring plate 21 .

[0027] The coupling 22 is a flexible coupling.

[0028] The bearing assembly includes a bearing box 24 arranged between the fixed ring seat 20 and the other end of the pump shaft 5, two bearings 25 arranged between the bearing box 24 and the other end of the pump shaft 5, and a sealing end cover 26 arranged on the end surface of the bearing box 24 and located outside the other end of the pump shaft 5. The bearing 25 is an angular contact ball bearing.

[0029] The inner sleeve 13 is a polytetrafluoroethylene sleeve, and the outer sleeve 14 is a silicon carbide sleeve, which can effectively reduce the vibration when the pump shaft rotates.

[0030] The contents not described in detail in the utility model specification belong to the prior art known to those skilled in the art. The utility model is to protect the structure of the product, and the model of each component is not the content of the utility model protection, which is also the prior art known to those skilled in the art. Any component on the market that can achieve the above functions of the utility model can be used as a choice.

[0031] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A long-axis in-tank pump, characterized in that: The pump body comprises a connecting plate, a pump head housing arranged on one side of the connecting plate, a motor arranged on the other side of the connecting plate, a pump shaft having one end arranged in the pump head housing and the other end passing through the connecting plate and connected to the rotating shaft of the motor, a pump housing arranged between the pump head housing and the connecting plate and located outside the pump shaft, an impeller arranged in the pump head housing and connected to the pump shaft, a pump head filter arranged on the pump head housing, an outlet pipe having one end connected to the pump head housing and the other end passing through the connecting plate, a flexible joint arranged at the other end of the outlet pipe, a connecting ring seat arranged between the inner wall of the pump housing and the pump shaft and fitted with the connecting plate, a connecting ring seat arranged between the inner wall of the pump housing and the pump shaft and fitted with the pump head housing, an inner sleeve arranged on the inner wall of the connecting ring seat, and a connecting ring seat arranged between the inner wall of the pump housing and the pump shaft and fitted with the pump head housing. An outer sleeve on the pump shaft and matched with the inner sleeve, a rod sleeve arranged on the outside of the pump shaft and located between the outer sleeve and the connecting ring seat, an air-stop ring seat arranged on the end face of the connecting ring seat away from the motor and located outside the rod sleeve, a V-ring arranged on the outside of the rod sleeve and fitted with the air-stop ring seat, a locking cap arranged on the pump shaft and located inside the impeller and fitted with the impeller, a sealing ring arranged outside the pump shaft and located between the rod sleeve and the outer sleeve, a fixed ring seat fixedly arranged on the end face of the connecting plate close to the motor and located outside the other end of the pump shaft, a bearing assembly arranged between the fixed ring seat and the other end of the pump shaft, a connecting ring plate arranged between the fixed ring seat and the motor, and a coupling arranged in the connecting ring plate and connecting the other end of the pump shaft with the rotating shaft of the motor.

2. A long-axis in-tank pump according to claim 1, characterized in that: The interior of the connecting ring plate is connected to the interior of the fixing ring seat, and a plurality of heat dissipation holes for heat dissipation are provided on the connecting ring plate.

3. A long-axis in-tank pump according to claim 2, characterized in that: The number of the heat dissipation holes is two, and the two heat dissipation holes are symmetrically arranged about the axis of the connecting ring plate.

4. A long-axis in-tank pump according to claim 1, characterized in that: The coupling is a fuel flexible coupling.

5. The long-axis in-tank pump according to claim 1, characterized in that: The bearing assembly includes a bearing box arranged between the fixed ring seat and the other end of the pump shaft, two bearings arranged between the bearing box and the other end of the pump shaft, and a sealing end cover arranged on the end surface of the bearing box and located outside the other end of the pump shaft.

6. A long-axis in-tank pump according to claim 5, characterized in that: The bearing is an angular contact ball bearing.

7. The long-axis in-tank pump according to claim 1, characterized in that: The inner sleeve is a polytetrafluoroethylene sleeve, and the outer sleeve is a silicon carbide sleeve.

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