Split type PTFE stator manufacturing equipment

Abstract

The utility model discloses a split type PTFE (Polytetrafluoroethylene) stator manufacturing device, which belongs to the field of screw pumps and comprises a plurality of segmented stators arranged in sequence, and a positioning processing die can be arranged between every two adjacent segmented stators; the positioning machining die comprises a positioning plate, and two positioning bosses are arranged on the end faces of the two sides of the positioning plate and matched with the ends of the inner spiral channels of the corresponding segmented stators. At least two guide holes are formed in the positioning plate, and positioning pin holes can be machined in the end face of the segmented stator through the guide holes; the adjacent segmented stators are connected through positioning pins; the two end glands are arranged at the two ends of the large-specification stator, through holes are formed in the centers of the two end glands, the segmented stators are connected through positioning pins, a screw rod penetrates through all the segmented stators, and compression nuts are in threaded connection with the screw rods extending out of the two ends of the end glands. According to the utility model, a large-size PTFE stator can be processed and reassembled in a segmented manner, and the precision of a spiral channel in the whole stator is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of screw pump, concretely relates to split type PTFE stator manufacturing equipment. BACKGROUND

[0002] The inner spiral surface of the stator often needs to be processed by a lengthened tool bar, however, when processing the large-specification PTFE material stator, the lengthened tool bar is too long due to the long length of the stator, which leads to severe shaking during the processing, the difficulty of processing the inner spiral surface is increased, and the processing quality is seriously affected;

[0003] In order to reduce the processing difficulty, the large-specification stator is often processed in sections and then assembled, however, the inner spiral channel is inside the large-specification stator, the adjacent sectional stators not only require positioning and installation when assembled, but also must be tightly fitted, however, there is no equipment required for this processing at present.

[0004] In view of the above problems, the utility model designs and manufactures a split type PTFE stator manufacturing equipment to overcome the above defects. INVENTION CONTENTS

[0005] For the problems existing in the prior art, the split type PTFE stator manufacturing equipment provided by the utility model can process and then assemble the large-specification PTFE material stator in sections, and ensures the accuracy of the inner spiral channel of the entire stator.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a split type PTFE stator manufacturing equipment, comprising a plurality of sequentially arranged sectional stators, the central positions of the sectional stators can form an inner spiral channel when sequentially arranged, and a positioning and processing mold can be arranged between the adjacent sectional stators;

[0007] The positioning and processing mold comprises a positioning plate, two positioning bosses are arranged on the end faces of the positioning plate, and the two positioning bosses can simultaneously cooperate with the end portions of the inner spiral channels of the corresponding sectional stators;

[0008] At least two guide holes are arranged on the positioning plate, and the positioning pin holes can be processed on the end faces of the sectional stators through the guide holes;

[0009] The adjacent sectional stators can be positioned and connected through the positioning pins and the positioning pin holes;

[0010] Two end head covers are further included, each of which is provided with a through hole in the center, the segmented stators are connected by the positioning pins to form a large-scale stator, the two end head covers can be arranged at the two ends of the large-scale stator, a screw rod is arranged in the helical channel in the large-scale stator, the screw rod can extend out of the end head cover from the through hole at the two ends, and the screw rod extending out of the end head cover is screwed with a compression nut, and rotation of the compression nut can make the adjacent segmented stators closely adhere to each other.

[0011] Preferably, the positioning pin hole is located at the maximum wall thickness position of the segmented stator.

[0012] Preferably, a guide sleeve is arranged in the guide hole, and the guide sleeve is made of carbon tool steel.

[0013] Preferably, two guide holes are symmetrically arranged on the positioning plate.

[0014] Preferably, the length of the positioning pin is greater than the depth of one positioning pin hole and less than the sum of the depths of two positioning pin holes.

[0015] Preferably, the total length of the plurality of segmented stators is less than the length of the screw rod.

[0016] The utility model discloses the beneficial effect lies in:

[0017] 1. The positioning convex platform on both sides of the positioning machining mould is matched with the end of the helical channel of the segmented stator, the positioning position is unified, the position precision of the positioning pin hole is guaranteed, the adjacent segmented stators can be accurately positioned through the positioning pin hole, and the complete and continuous helical channel is formed.

[0018] 2. The segmented stator assembled through the positioning pin is fastened by the two end head covers, so that the adjacent segmented stators can be tightly jointed, and the quality of the helical channel in the spliced stator is further improved.

[0019] 3. The positioning pin hole is located at the maximum wall thickness position of the segmented stator, which does not affect the structural strength of the segmented stator and is convenient for the operator to judge the angle when assembling the adjacent segmented stators. DRAWINGS

[0020] Figure 1 It is a schematic view that the end head cover and the screw rod fasten the segmented stator.

[0021] Figure 2 It is a schematic view of the positioning machining mould.

[0022] In the drawing: 1-segmented stator, 2-positioning pin hole, 3-screw rod, 4-end head cover, 5-compression nut, 6-positioning plate, 7-positioning convex platform, 8-guide hole, 9-guide sleeve. DETAILED DESCRIPTION

[0023] For the convenience of those skilled in the art to understand, the utility model is further explained below in combination with the drawings.

[0024] As shown in Figure 1 , Figure 2 A split type PTFE stator manufacturing equipment, comprising a plurality of sequentially arranged segmented stators 1, the center positions of the plurality of segmented stators 1 can form an inner spiral channel when sequentially arranged, and a positioning machining die can be arranged between adjacent segmented stators 1.

[0025] The positioning machining die specifically comprises a positioning plate 6, two positioning bosses 7 are arranged on the end faces of the positioning plate 6, the two positioning bosses 7 can simultaneously cooperate with the end portions of the inner spiral channels of the corresponding segmented stators 1, at least two guide holes 8 are arranged on the positioning plate 6, positioning pin holes 2 can be machined on the end faces of the segmented stators 1 through the guide holes 8, adjacent segmented stators 1 can be positioned and connected through the positioning pins and the positioning pin holes 2, the length of the positioning pin is greater than the depth of one positioning pin hole 2 and less than the sum of the depths of two positioning pin holes 2.

[0026] The utility model utilizes the cooperation of the positioning bosses 7 on both sides of the positioning machining die and the end portions of the inner spiral channels of the segmented stators 1, unifies the positioning position, guarantees the position precision of the positioning pin holes 2, ensures that adjacent segmented stators 1 can be accurately positioned through the positioning pin holes 2, and forms a complete and continuous inner spiral channel.

[0027] Further comprising two end portion gland nuts 4, the center of each of the two end portion gland nuts 4 is provided with a through hole, the segmented stators 1 are connected through the positioning pins to form a large-specification stator, the two end portion gland nuts 4 can be arranged at the two ends of the large-specification stator, a screw rod 3 penetrates through the inner spiral channel of the large-specification stator, the total length of the plurality of segmented stators 1 is less than the length of the screw rod 3, the screw rod 3 can extend out of the end portion gland nuts 4 from the through holes at the two ends, and the screw rod 3 extending out of the end portion gland nuts 4 is screwed with a compression nut 5, and rotating the compression nut 5 can make the adjacent segmented stators 1 tightly fit.

[0028] The utility model utilizes the two end portion gland nuts 4 to fasten the segmented stators 1 assembled through the positioning pins, guarantees that the adjacent segmented stators 1 can be tightly connected, and further improves the quality of the inner spiral channel in the spliced stator.

[0029] The positioning pin holes 2 are preferably located at the maximum wall thickness positions of the segmented stators 1, which not only does not affect the structural strength of the segmented stators 1, but also facilitates the operator to judge the angle when assembling adjacent segmented stators 1.

[0030] The guide hole 8 is provided with a guide sleeve 9, the guide sleeve 9 is made of carbon tool steel, so that the guide sleeve 9 has sufficient hardness, and the guide sleeve 9 has a long service life. The guide hole 8 is preferably provided with two, and the two guide holes 8 are symmetrically arranged on the positioning plate 6.

[0031] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the scope of protection of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. A split PTFE stator making apparatus characterized by, The application relates to a large-scale screw motor, which comprises a plurality of sequentially arranged sectional stators (1), the central positions of the sectional stators (1) can form an inner spiral channel when the sectional stators (1) are sequentially arranged, and a positioning machining die can be arranged between adjacent sectional stators (1). The positioning machining die comprises a positioning plate, two positioning bosses are arranged on the end faces of the positioning plate, and the two positioning bosses can be matched with the end portions of the inner spiral channels of the corresponding sectional stators (1) at the same time. At least two guide holes are arranged on the positioning plate, and positioning pin holes (2) can be machined on the end faces of the sectional stators (1) through the guide holes. Adjacent sectional stators (1) can be positioned and connected through positioning pins and the positioning pin holes (2). The application further comprises two end portion gland nuts (4), the central portions of the two end portion gland nuts (4) are provided with through holes, the sectional stators (1) are connected through the positioning pins to form a large-scale stator, the two end portion gland nuts (4) can be arranged at the two ends of the large-scale stator, a screw rod (3) penetrates through the inner spiral channel of the large-scale stator, the screw rod (3) can extend out of the end portion gland nuts (4) from the two ends, and compression nuts are screwed on the two ends of the screw rod (3) extending out of the end portion gland nuts (4), and the adjacent sectional stators (1) can be tightly combined by rotating the compression nuts.

2. The split PTFE stator making apparatus of claim 1 wherein, The positioning pin holes (2) are located at the maximum wall thickness positions of the sectional stators (1).

3. The split PTFE stator making apparatus of claim 1 wherein, Guide sleeves are arranged in the guide holes, and the guide sleeves are made of carbon tool steel.

4. The split PTFE stator making apparatus of claim 1 wherein, The guide holes are provided with two guide sleeves, and the two guide sleeves are symmetrically arranged on the positioning plate.

5. The split PTFE stator making apparatus of claim 1 wherein, The length of the positioning pin is greater than the depth of one positioning pin hole (2) and smaller than the sum of the depths of two positioning pin holes (2).

6. The split PTFE stator making apparatus of claim 1 wherein, The total length of the sectional stators (1) is smaller than the length of the screw rod (3).

Images